Blow-down valve assembly and electric water heater

Abstract

The utility model discloses a blow-down valve assembly and an electric water heater, the blow-down valve assembly comprises: a guide connecting pipe, the guide connecting pipe comprises a connecting pipe body and a guide hole arranged on the connecting pipe body, a first water hole is arranged in the connecting pipe body, and the guide hole spirally extends along the circumferential direction of the connecting pipe body; the valve element comprises a valve column, a valve block arranged on the upper side of the valve column and a guide column arranged on the outer wall face of the valve column, the guide column penetrates through the guide hole and can slide along the guide hole, and the valve column is arranged in the connecting pipe and can slide between a first position and a second position in the vertical direction relative to the connecting pipe body. When the valve column slides to a first position relative to the connecting pipe body, the valve plate blocks the first water hole, and when the valve column slides to a second position relative to the connecting pipe body, the valve plate opens the first water hole; the first driving pipe comprises a first pipe body and a driving groove which is formed in the first pipe body and extends in the vertical direction, and the first pipe body is arranged on the connecting pipe body in a sleeving mode and can rotate relative to the connecting pipe body.

Description

Technical Field

[0001] The utility model relates to the technical field of household appliances, in particular to a sewage discharge valve assembly and an electric water heater. Background Art

[0002] After a storage-type electric water heater is used for a period of time, dirt impurities such as scale and sediment will be deposited in the inner tank. Since the sewage outlet of the electric water heater product is connected by threads and a wrench is required to open it, if the water in the inner tank is in a high-temperature state when opening, it may accidentally scald during the sewage discharge operation. Therefore, the sewage discharge work needs to be operated by professionals. Users need to notify the manufacturer for cleaning, and the manufacturer sends professionals to disassemble and clean, which is time-consuming and laborious.

[0003] Therefore, there is an urgent need for a sewage discharge valve assembly to solve the above problems. Summary of the Utility Model

[0004] The utility model aims to solve at least one of the problems existing in the related art to a certain extent. For this reason, the utility model provides a sewage discharge valve assembly, which can open and close the sewage discharge valve assembly by rotating the first drive pipe of the sewage discharge valve assembly. The structure is simple, the operation is convenient, and the sewage flows out through the first drive pipe into the sewage discharge pipe without flowing out to scald users, and the safety is high.

[0005] The above object is achieved by the following technical solutions:

[0006] A sewage discharge valve assembly includes:

[0007] A guiding connection pipe, including a connection pipe body and a guiding hole opened on the connection pipe body. A first water hole is arranged in the connection pipe body, and the guiding hole spirally extends along the circumferential direction of the connection pipe body;

[0008] A valve core, including a valve column, a valve plate arranged on the upper side of the valve column, and a guiding column arranged on the outer wall surface of the valve column. The guiding column penetrates into the guiding hole and can slide along the guiding hole. The valve column is arranged in the connection pipe and can slide vertically between a first position and a second position relative to the connection pipe body. When the valve column slides relative to the connection pipe body to the first position, the valve plate blocks the first water hole. When the valve column slides relative to the connection pipe body to the second position, the valve plate opens the first water hole;

[0009] A first drive pipe, including a first pipe body and a drive groove extending vertically arranged on the inner wall surface of the first pipe body. The first pipe body is sleeved outside the connection pipe and can rotate relative to the connection pipe body. The guiding column is inserted into the drive groove and can slide relative to the drive groove.

[0010] Optionally, the diameter of the valve plate is greater than that of the valve stem, and the diameter of the valve plate is greater than that of the first water hole.

[0011] Optionally, the guiding connecting pipe further includes a stepped connecting pipe disposed on the upper side of the connecting pipe body. The inner diameter of the stepped connecting pipe is greater than that of the first water hole. When the valve stem slides relative to the connecting pipe body to the first position, the valve plate abuts against the bottom side of the stepped connecting pipe.

[0012] Optionally, a sealing ring is further included, and the sealing ring is disposed between the bottom side of the stepped connecting pipe and the valve plate.

[0013] Optionally, a water channel is formed in the valve stem, and a second water hole communicating with the water channel is formed in the circumferential side of the valve stem. When the valve stem slides relative to the connecting pipe body to the second position, the first water hole communicates with the second water hole.

[0014] Optionally, at least two guiding columns and guiding holes are provided, and the guiding columns and the guiding holes are arranged in one-to-one correspondence.

[0015] Optionally, one of a rotation protrusion and a rotation groove is circumferentially provided on the outer side of the connecting pipe body, and the other of the rotation protrusion and the rotation groove is circumferentially provided on the upper part of the inner side of the first pipe body. The rotation protrusion extends into the rotation groove and can rotate circumferentially along the rotation groove.

[0016] Optionally, a second driving pipe is further included. The second driving pipe includes a second pipe body. The upper part of the second pipe body is sleeved on the outer side of the lower part of the first pipe body. One of a clamping protrusion and a clamping groove is provided in the second pipe body, and the other of the clamping protrusion and the clamping groove is provided on the outer side of the lower part of the first pipe body. The clamping protrusion extends into the clamping groove.

[0017] Optionally, one of the clamping protrusion and the clamping groove is provided on the upper part of the second pipe body and is connected to the upper side surface of the second pipe body, and the other of the clamping protrusion and the clamping groove is provided on the lower part of the first pipe body and is connected to the lower side surface of the first pipe body.

[0018] On the other hand, the present utility model provides an electric water heater, including a hot water tank and a sewage discharge pipe. A sewage discharge port is formed in the hot water tank. The sewage discharge valve assembly as described above is further included. The upper part of the guiding connecting pipe is connected to the sewage discharge port, and the second driving pipe is connected to the sewage discharge pipe.

[0019] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0020] The present utility model provides a sewage discharge valve assembly. By rotating the first drive pipe of the sewage discharge valve assembly, the opening and closing of the sewage discharge valve assembly can be achieved. The structure is simple, the operation is convenient, and the sewage flows out through the first drive pipe into the sewage discharge pipe without flowing out and scalding users, with high safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 FIG. 6 is a schematic perspective view of an electric water heater provided by a specific embodiment of the present utility model;

[0022] Figure 2 FIG. 10 is an exploded view of a sewage discharge valve assembly provided by a specific embodiment of the present utility model;

[0023] Figure 3 FIG. 14 is a schematic perspective view of the first drive pipe of the sewage discharge valve assembly provided by a specific embodiment of the present utility model;

[0024] Figure 4 FIG. 18 is a schematic cross-sectional view of the sewage discharge valve assembly in a closed state provided by a specific embodiment of the present utility model;

[0025] Figure 5 FIG. 22 is a schematic cross-sectional view of the sewage discharge valve assembly in an open state provided by a specific embodiment of the present utility model.

[0026] In the figures:

[0027] 1. Guide connection pipe; 11. Connection pipe body; 12. Rotating protrusion; 13. Guide hole; 14. Step connection pipe;

[0028] 2. Valve core; 21. Valve post; 22. Valve plate; 23. Guide post; 24. Second water hole;

[0029] 3. First drive pipe; 31. First pipe body; 32. Drive groove; 33. Rotating groove; 34. Clamping groove;

[0030] 4. Second drive pipe; 41. Second pipe body; 42. Clamping protrusion;

[0031] 5. Sewage discharge pipe;

[0032] 10. Hot water tank; 100. Sewage discharge port; 101. First water hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The following embodiments are used to illustrate the present utility model, but the present utility model is not limited by these embodiments. Modifying the specific implementation manner of the present utility model or equivalently replacing some technical features without departing from the spirit of the present utility model scheme shall be covered within the scope of the technical solution claimed by the present utility model.

[0034] Please refer to Figures 1-5, the present utility model provides a sewage discharge valve assembly, including a guiding connection pipe 1, a valve core 2 and a first driving pipe 3. The guiding connection pipe 1 includes a connection pipe body 11 and a guiding hole 13 opened on the connection pipe body 11. A first water hole 101 is arranged inside the connection pipe body 11, and the guiding hole 13 spirally extends along the circumferential direction of the connection pipe body 11. The valve core 2 includes a valve post 21, a valve disc 22 arranged on the upper side of the valve post 21 and a guiding post 23 arranged on the outer wall surface of the valve post 21. The guiding post 23 penetrates through the guiding hole 13 and can slide along the guiding hole 13. The valve post 21 is arranged inside the connection pipe and can slide relative to the connection pipe body 11 in the vertical direction between a first position and a second position. When the valve post 21 slides relative to the connection pipe body 11 to the first position, the valve disc 22 blocks the first water hole 101. When the valve post 21 slides relative to the connection pipe body 11 to the second position, the valve disc 22 opens the first water hole 101. The first driving pipe 3 includes a first pipe body 31 and a driving groove 32 arranged on the inner wall surface of the first pipe body 31 and extending in the vertical direction. The first pipe body 31 is sleeved outside the connection pipe body 11 and can rotate relative to the connection pipe body 11. The guiding post 23 is inserted into the driving groove 32 and can slide relative to the driving groove 32. When it is necessary to open the sewage discharge valve assembly for sewage discharge, the user holds and rotates the first driving pipe 3 in the first direction, so that the driving groove 32 can push the guiding post 23 to slide upward along the guiding hole 13, thereby driving the valve post 21 to slide upward relative to the guiding connection pipe 1, so as to push the valve disc 22 out of the first water hole 101, and further making the sewage discharge valve assembly in an open state; when it is necessary to close the sewage discharge valve assembly, the user holds and rotates the first driving pipe 3 in the direction opposite to the first direction, so that the driving groove 32 can push the guiding post 23 to slide downward along the guiding hole 13, thereby driving the valve post 21 to slide downward relative to the guiding connection pipe 1, so that the valve disc 22 blocks the first water hole 101, and further making the sewage discharge valve assembly in a closed state.

[0035] During specific use, the sewage discharge valve assembly is installed between the sewage discharge port 100 of the water heater and the sewage pipe 5. Sewage flows out through the inside of the first driving pipe 3 to the sewage pipe 5, and the sewage will not flow out to scald the user, with high safety.

[0036] Optionally, the diameter of the valve disc 22 is larger than the diameter of the valve post 21, and the diameter of the valve disc 22 is larger than the diameter of the first water hole 101, so that the valve post 21 can slide inside the first pipe body 31, and the valve disc 22 can block the first water hole 101.

[0037] Optionally, the guiding connection pipe 1 further includes a stepped connection pipe 14 arranged on the upper side of the connection pipe body 11. The inner diameter of the stepped connection pipe 14 is larger than the diameter of the first water hole 101. When the valve post 21 slides relative to the connection pipe body 11 to the first position, the valve disc 22 abuts against the bottom side of the stepped connection pipe 14 to stably block the first water hole 101.

[0038] Optionally, a sealing ring is further included, which is arranged between the bottom side of the stepped connecting pipe 14 and the valve plate 22 to block the gap between the stepped connecting pipe 14 and the valve plate 22 and prevent water leakage.

[0039] Optionally, a water passage is opened in the valve column 21, and a second water hole 24 communicating with the water passage is opened on the circumferential side of the valve column 21. When the valve column 21 slides relative to the connecting pipe body 11 to the second position, the first water hole 101 communicates with the second water hole 24, and the sewage flows from the first water hole 101 to the second water hole 24 and then flows out from the water through hole.

[0040] Optionally, at least two guiding columns 23 and guiding holes 13 are provided, and the guiding columns 23 and the guiding holes 13 are arranged in one-to-one correspondence to improve the sliding stability of the valve column 21.

[0041] Optionally, one of a rotating protrusion 12 and a rotating groove 33 is arranged on the outer side of the connecting pipe body 11 along the circumferential direction, and the other of the rotating protrusion 12 and the rotating groove 33 is arranged on the upper part of the inner side of the first pipe body 31 along the circumferential direction. The rotating protrusion 12 extends into the rotating groove 33 and can rotate circumferentially along the rotating groove 33, so as to realize the rotational connection and installation between the first driving pipe 3 and the guiding connecting pipe 1.

[0042] Optionally, a second driving pipe 4 is further included. The second driving pipe 4 includes a second pipe body 41. The upper part of the second pipe body 41 is sleeved on the outer side of the lower part of the first pipe body 31. One of a clamping protrusion 42 and a clamping groove 34 is arranged in the second pipe body 41, and the other of the clamping protrusion 42 and the clamping groove 34 is arranged on the outer side of the lower part of the first pipe body 31. The clamping protrusion 42 extends into the clamping groove 34, and the user drives the first driving pipe 3 to rotate by rotating the second driving pipe 4. By providing the second driving pipe 4, it is convenient to connect the second driving pipe 4 to the sewage discharge pipe 5 and at the same time can drive the first driving pipe to rotate.

[0043] Optionally, one of the clamping protrusion 42 and the clamping groove 34 is arranged on the upper part of the second pipe body 41 and is connected to the upper side surface of the second pipe body 41, and the other of the clamping protrusion 42 and the clamping groove 34 is arranged on the lower part of the first pipe body 31 and is connected to the lower side surface of the first pipe body 31, so that it is convenient for the clamping protrusion 42 to be inserted into the clamping groove 34 in the vertical direction, thus facilitating the insertion and installation between the second driving pipe 4 and the first driving pipe 3.

[0044] On the other hand, the present utility model provides an electric water heater, which includes a hot water tank 10 and a sewage discharge pipe 5. A sewage discharge port 100 is opened on the hot water tank 10, and the above-mentioned sewage discharge valve assembly is further included. The upper part of the guiding connecting pipe 1 is connected to the sewage discharge port 100, and the second driving pipe 4 is connected to the sewage discharge pipe 5. In this way, by rotating the second driving pipe 4 of the sewage discharge valve assembly, the opening and closing of the sewage discharge valve assembly can be realized, and the sewage will not flow out and scald the user, and the safety is high.

[0045] Optionally, for the convenience of rotating the first drive pipe 3 and the second drive pipe 4, the sewage discharge pipe 5 is arranged as a flexible pipe.

[0046] The above are only some embodiments of the present utility model. For those of ordinary skill in the art, without departing from the creative concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model.

Claims

1. A sewage valve assembly, characterized in that: include: A guide connecting pipe (1) comprises a connecting pipe body (11) and a guide hole (13) provided on the connecting pipe body (11), wherein a first water hole (101) is provided in the connecting pipe body (11), and the guide hole (13) extends spirally along the circumference of the connecting pipe body (11); A valve core (2), comprising a valve column (21), a valve plate (22) arranged on the upper side of the valve column (21), and a guide column (23) arranged on the outer wall of the valve column (21); the guide column (23) penetrates the guide hole (13) and can slide along the guide hole (13); the valve column (21) is arranged in the connecting pipe body (11) and can slide relative to the connecting pipe body (11) in a vertical direction between a first position and a second position; when the valve column (21) slides relative to the connecting pipe body (11) to the first position, the valve plate (22) blocks the first water hole (101); when the valve column (21) slides relative to the connecting pipe body (11) to the second position, the valve plate (22) opens the first water hole (101); The first driving tube (3) comprises a first tube body (31) and a driving groove (32) arranged on the inner wall surface of the first tube body (31) and extending in the vertical direction. The first tube body (31) is sleeved outside the connecting tube body (11) and can rotate relative to the connecting tube body (11). The guide column (23) is inserted into the driving groove (32) and can slide relative to the driving groove (32).

2. The sewage valve assembly according to claim 1, characterized in that: The diameter of the valve plate (22) is greater than the diameter of the valve column (21), and the diameter of the valve plate (22) is greater than the diameter of the first water hole (101).

3. The sewage valve assembly according to claim 2, characterized in that: The guide connecting pipe (1) further comprises a stepped connecting pipe (14) arranged on the upper side of the connecting pipe body (11); the inner diameter of the stepped connecting pipe (14) is greater than the diameter of the first water hole (101); when the valve column (21) slides to the first position relative to the connecting pipe body (11), the valve plate (22) abuts against the bottom side of the stepped connecting pipe (14).

4. The sewage valve assembly according to claim 3, characterized in that: It also comprises a sealing ring (6), wherein the sealing ring (6) is arranged between the bottom side of the step connecting pipe (14) and the valve plate (22).

5. The sewage valve assembly according to claim 3, characterized in that: A water passage is provided in the valve column (21), and a second water hole (24) communicating with the water passage is provided on the circumferential side of the valve column (21); when the valve column (21) slides to the second position relative to the connecting pipe body (11), the first water hole (101) communicates with the second water hole (24).

6. The sewage valve assembly according to claim 1, characterized in that: At least two of the guide posts (23) and the guide holes (13) are provided, and the guide posts (23) and the guide holes (13) are provided in a one-to-one correspondence.

7. The sewage valve assembly according to any one of claims 1 to 6, characterized in that: The outer side of the connecting tube body (11) is provided with one of a rotating protrusion (12) and a rotating groove (33) along the circumferential direction, and the upper part of the inner side of the first tube body (31) is provided with the other of the rotating protrusion (12) and the rotating groove (33) along the circumferential direction, and the rotating protrusion (12) extends into the rotating groove (33) and can rotate in the circumferential direction along the rotating groove (33).

8. The sewage valve assembly according to claim 7, characterized in that: The invention also comprises a second driving tube (4), wherein the second driving tube (4) comprises a second tube body (41), wherein the upper portion of the second tube body (41) is sleeved on the outer side of the lower portion of the first tube body (31), wherein a snap-fitting protrusion (42) and a snap-fitting groove (34) are arranged in the second tube body (41), and the outer side of the lower portion of the first tube body (31) is provided with the other of the snap-fitting protrusion (42) and the snap-fitting groove (34), wherein the snap-fitting protrusion (42) extends into the snap-fitting groove (34).

9. The sewage valve assembly according to claim 8, characterized in that: One of the snap-fit ​​protrusion (42) and the snap-fit ​​groove (34) is arranged at the upper part of the second tube body (41) and connected to the upper side surface of the second tube body (41), and the other of the snap-fit ​​protrusion (42) and the snap-fit ​​groove (34) is arranged at the lower part of the first tube body (31) and connected to the lower side surface of the first tube body (31).

10. An electric water heater, comprising a hot water tank (10) and a sewage pipe (5), wherein a sewage outlet (100) is provided on the hot water tank (10), characterized in that: It also comprises the sewage valve assembly according to any one of claims 1 to 9, wherein the upper portion of the guide connecting pipe (1) is connected to the sewage outlet (100), and the second driving pipe (4) is connected to the sewage pipe (5).

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