Blow-down valve for electric water heater

Abstract

The utility model discloses a blow-down valve for an electric water heater, and relates to the technical field of blow-down valves for electric water heaters, the blow-down valve comprises a blow-down pipe and a ball valve rotatably connected with the bottom surface of the inner wall of the blow-down pipe, the top surface of the blow-down pipe is fixedly connected with a supporting block, the inner wall of the supporting block is rotatably connected with a control rod, and the control rod is fixedly connected with the blow-down pipe. One end of the control rod penetrates through the top face of the blow-off pipe and is fixedly connected with the top face of the ball valve, the other end of the control rod extends to the top face of the supporting block and is fixedly connected with a control handle, and one end of the blow-off pipe is fixedly connected with a trash holding box. The anti-blocking assembly is arranged to intercept impurities in discharged sewage, the impurities are prevented from entering the blow-off pipe and the ball valve to block the blow-off pipe and the ball valve, and the limiting assembly can be used for limiting and fixing the anti-blocking assembly. And when the anti-blocking assembly needs to be replaced, limiting of the anti-blocking assembly can be relieved through the control assembly, and therefore the effect of rapidly replacing the anti-blocking assembly can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of drain valves for electric water heaters, in particular to a drain valve for electric water heaters. Background Art

[0002] The drain valve is an important component of the electric water heater and has the function of draining sewage. The existing drain valve of the electric water heater drains sewage and water by setting a ball valve. The drain valve generally uses the conversion of the handle to control the ball valve to realize opening and closing.

[0003] After searching, the applicant found that a Chinese patent disclosed "a drain valve structure for an electric water heater" with a publication (announcement) number of "CN217272040U". The patent uses a pressure rod to regularly clean the filter screen and the inside of the drain valve, and can completely isolate the outlet pipe during the cleaning process, so that impurities will not pollute the outlet water. In addition, the drain valve has a simple structure, is easy to operate, drains thoroughly, and has a very long service life.

[0004] The above device can clean the inside of the drain valve through a series of structures and will not pollute the outlet water during the drain operation. However, the above device cannot replace the filter during actual use. The filter is prone to damage after long-term use, causing the filter to lose its function of intercepting debris, thereby causing the drain valve to be blocked by debris. Utility Model Content

[0005] The purpose of the utility model is to provide a drain valve for an electric water heater, so as to solve the problem that the drain valve proposed in the above-mentioned background technology cannot replace the filter screen during actual use, and the filter screen is easily damaged after long-term use, causing the filter screen to lose the function of intercepting debris, thereby causing the drain valve to be blocked by debris.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a sewage valve for an electric water heater, comprising a sewage pipe and a ball valve rotatably connected to the bottom surface of the inner wall of the sewage pipe, the top surface of the sewage pipe is fixedly connected to a support block, the inner wall of the support block is rotatably connected to a control rod, one end of the control rod passes through the top surface of the sewage pipe and is fixedly connected to the top surface of the ball valve, the other end of the control rod extends to the top surface of the support block and is fixedly connected to a control handle, one end of the sewage pipe is fixedly connected to a sewage blocking box, the inner wall of the sewage blocking box is provided with an anti-blocking component for intercepting impurities in sewage to prevent clogging of the ball valve, the anti-blocking component is provided with two limit components for fixing the anti-blocking component inside the sewage blocking box, and control components for releasing the limit between the anti-blocking component and the sewage blocking box are provided on both sides of the surface of the sewage blocking box.

[0007] Preferably, the anti-blocking component comprises a support frame, the support frame is slidably connected to the inner wall of the dirt-blocking box, a filter is fixedly connected to the inner wall of the support frame, and a handle is fixedly connected to the top surface of the support frame.

[0008] Preferably, the limit assembly includes an installation cavity, which is opened on the inner wall of the support frame, and two reset rods are fixedly connected to the opposite side of the inner wall of the installation cavity, and the rod walls of the two reset rods are both sleeved with springs, and the rod walls of the two reset rods are both slidably connected with sliding blocks, and one side of the two sliding blocks is respectively fixedly connected to one end of the two springs.

[0009] Preferably, the limit assembly also includes a limit groove opened on the inner wall of the dirt blocking box, the inner wall of the limit groove is slidably connected to a limit block, one end of the limit block passes through the surface of the support frame and extends into the interior of the installation cavity, and the top surface and bottom surface of the limit block are respectively fixedly connected to the opposite sides of the two sliding blocks.

[0010] Preferably, the control assembly includes a pushing block, one side of the pushing block contacts one side of the limit block, and the side of the pushing block away from the limit block is fixedly connected to a threaded rod, one end of the threaded rod passes through one side of the inner wall of the limit groove and extends to the surface of the dirt blocking box, and the end of the threaded rod located on the surface of the dirt blocking box is fixedly connected to a rotating handle.

[0011] Preferably, the two limit blocks are trapezoidal in shape, and the inclined surfaces of the two limit blocks face downward.

[0012] Preferably, a connecting pipe is fixedly connected to a side of the dirt blocking box away from the sewage discharge pipe.

[0013] Preferably, the rod walls of the two threaded rods are both threadedly connected to the inner wall of the dirt-trapping box.

[0014] The technical effects and advantages of the utility model are as follows: the utility model intercepts impurities in the discharged sewage by arranging an anti-blocking component to prevent the debris from entering the sewage pipe and the ball valve and causing blockage of the sewage pipe and the ball valve, and can use the limit component to limit and fix the anti-blocking component. When the anti-blocking component needs to be replaced, the control component can be used to release the limit of the anti-blocking component, thereby achieving the effect of quickly replacing the anti-blocking component. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0016] Figure 2 It is a front view cross-sectional structural schematic diagram of the utility model.

[0017] Figure 3 It is a three-dimensional structural schematic diagram of the support frame of the utility model.

[0018] Figure 4 It is a schematic diagram of the side section structure of the dirt-blocking box of the utility model.

[0019] Figure 5 For this utility model Figure 4 Enlarged structural diagram at A in the middle.

[0020] In the figure: 1. sewage pipe; 2. anti-blocking component; 3. limit component; 4. control component; 5. dirt blocking box; 6. control handle; 7. support block; 8. control rod; 9. ball valve; 10. connecting pipe; 201. support frame; 202. filter screen; 203. handle; 301. limit groove; 302. installation cavity; 303. reset rod; 304. limit block; 306. spring; 307. sliding block; 401. turning handle; 402. push block; 403. threaded rod. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The utility model provides Figure 1-5 The sewage valve for the electric water heater shown in the figure comprises a sewage pipe 1 and a ball valve 9 rotatably connected to the bottom surface of the inner wall of the sewage pipe 1, a support block 7 is fixedly connected to the top surface of the sewage pipe 1, a control rod 8 is rotatably connected to the inner wall of the support block 7, one end of the control rod 8 passes through the top surface of the sewage pipe 1 and is fixedly connected to the top surface of the ball valve 9, the other end of the control rod 8 extends to the top surface of the support block 7 and is fixedly connected to a control handle 6, one end of the sewage pipe 1 is fixedly connected to a dirt blocking box 5, the inner wall of the dirt blocking box 5 is provided with an anti-blocking component 2 for intercepting impurities in sewage to prevent clogging of the ball valve 9, and the anti-blocking component 2 Two limit assemblies 3 are provided on the top for fixing the anti-blocking assembly 2 inside the dirt blocking box 5, and control assemblies 4 for releasing the limit between the anti-blocking assembly 2 and the dirt blocking box 5 are provided on both sides of the surface of the dirt blocking box 5. The anti-blocking assembly 2 is provided to intercept impurities in the discharged sewage to prevent debris from entering the sewage pipe 1 and the ball valve 9 to cause blockage of the sewage pipe 1 and the ball valve 9, and the limit assemblies 3 can be used to limit and fix the anti-blocking assembly 2. When the anti-blocking assembly 2 needs to be replaced, the control assembly 4 can be used to release the limit of the anti-blocking assembly 2, thereby achieving the effect of quickly replacing the anti-blocking assembly 2.

[0023] like Figure 1-4As shown, the anti-blocking component 2 includes a support frame 201, which can support a filter screen 202. The support frame 201 is slidably connected to the inner wall of the dirt-blocking box 5. The inner wall of the support frame 201 is fixedly connected with a filter screen 202. The filter screen 202 can intercept impurities in the discharged sewage to prevent the impurities from entering the sewage pipe 1 and the ball valve 9 and causing blockage. A handle 203 is fixedly connected to the top surface of the support frame 201.

[0024] like Figure 3-5 As shown, the limit assembly 3 includes an installation cavity 302, which is arranged on the inner wall of the support frame 201, and two reset rods 303 are fixedly connected to the opposite side of the inner wall of the installation cavity 302. The rod walls of the two reset rods 303 are sleeved with springs 306, and the rod walls of the two reset rods 303 are slidably connected with sliding blocks 307. One side of the two sliding blocks 307 is respectively fixedly connected to one end of the two springs 306. The limit assembly 3 also includes a limit groove 301 arranged on the inner wall of the dirt blocking box 5, and the inner wall of the limit groove 301 is slidably connected to the limit block 304. The limit block 304 can cooperate with the limit groove 301 to fix and limit the support frame 201 and the filter screen 202. One end of the limit block 304 passes through the surface of the support frame 201 and extends to the inside of the installation cavity 302. The top surface and the bottom surface of the limit block 304 are respectively fixedly connected to the opposite side of the two sliding blocks 307.

[0025] like Figure 1 and Figure 5 As shown, the control component 4 includes a pushing block 402, which can push the limit block 304 to move so that the limit block 304 and the limit groove 301 are released from the limit and fixation, thereby releasing the limit of the filter screen 202. One side of the pushing block 402 contacts one side of the limit block 304, and the side of the pushing block 402 away from the limit block 304 is fixedly connected to a threaded rod 403, one end of the threaded rod 403 passes through one side of the inner wall of the limit groove 301 and extends to the surface of the dirt blocking box 5, and one end of the threaded rod 403 located on the surface of the dirt blocking box 5 is fixedly connected to a rotating handle 401.

[0026] like Figure 2 , Figure 3 and Figure 5 As shown, the two limit blocks 304 are trapezoidal in shape, and the inclined surfaces of the two limit blocks 304 face downward. The inclined surfaces of the two limit blocks 304 face downward so that the support frame 201 is not blocked when entering the interior of the dirt-blocking box 5, but is blocked when the support frame 201 is pulled out. The side of the dirt-blocking box 5 away from the sewage pipe 1 is fixedly connected with the connecting pipe 10, and the rod walls of the two threaded rods 403 are threadedly connected to the inner wall of the dirt-blocking box 5, so that the two threaded rods 403 can be advanced and retracted by rotation.

[0027] Working principle of the utility model: when the drain valve is used, the connecting pipe 10 is connected to the drain outlet of the electric water heater, and then the control handle 6 drives the control rod 8 to rotate so as to control the ball valve 9 to open and discharge the sewage, and the impurities in the sewage are intercepted by the filter 202 when the sewage is discharged. When the filter 202 needs to be replaced after being used for a long time, the two rotating handles 401 are rotated at the same time to make the two threaded rods 403 move to the middle at the same time, and then the two threaded rods 403 use the two pushing blocks 402 to push the two limit blocks 304 at the same time so that the connection between the two limit blocks 304 and the two limit grooves 301 is released, so that the support frame 201 and the filter 202 are released from the limit, and then the support frame 201 and the filter 202 are pulled out through the handle 203 for replacement;

[0028] When it is necessary to install a new filter screen 202 into the dirt blocking box 5, the support frame 201 is vertically inserted into the dirt blocking box 5. Then, since the two limit blocks 304 are trapezoidal and the inclined surfaces are downward, as the support frame 201 is inserted into the dirt blocking box 5, the two limit blocks 304 move toward the middle at the same time. As the two limit blocks 304 move toward the middle, the sliding block 307 moves toward the middle on the reset rod 303, and then the spring 306 is compressed. Then, when the support frame 201 is inserted to the bottom with the filter screen 202, the two limit blocks 304 are aligned with the two limit grooves 301, so that the two springs 306 stretch out and drive the two limit blocks 304 to move to both sides through the sliding block 307, and then the two limit blocks 304 are inserted into the two limit grooves 301, thereby completing the installation of the support frame 201 and the filter screen 202.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A sewage valve for an electric water heater, comprising a sewage pipe (1) and a ball valve (9) rotatably connected to the bottom surface of the inner wall of the sewage pipe (1), characterized in that: The top surface of the sewage pipe (1) is fixedly connected to a support block (7), and the inner wall of the support block (7) is rotatably connected to a control rod (8), one end of the control rod (8) penetrates the top surface of the sewage pipe (1) and is fixedly connected to the top surface of the ball valve (9), and the other end of the control rod (8) extends to the top surface of the support block (7) and is fixedly connected to a control handle (6), one end of the sewage pipe (1) is fixedly connected to a dirt blocking box (5), the inner wall of the dirt blocking box (5) is provided with an anti-blocking component (2) for intercepting impurities in sewage to prevent the ball valve (9) from being blocked, the anti-blocking component (2) is provided with two limit components (3) for fixing the anti-blocking component (2) inside the dirt blocking box (5), and control components (4) for releasing the limit between the anti-blocking component (2) and the dirt blocking box (5) are provided on both sides of the surface of the dirt blocking box (5).

2. The drain valve for an electric water heater according to claim 1, characterized in that: The anti-blocking component (2) comprises a support frame (201), the support frame (201) is slidably connected to the inner wall of the dirt-blocking box (5), the inner wall of the support frame (201) is fixedly connected to a filter screen (202), and the top surface of the support frame (201) is fixedly connected to a handle (203).

3. The drain valve for an electric water heater according to claim 1, characterized in that: The limit assembly (3) comprises an installation cavity (302), wherein the installation cavity (302) is provided on the inner wall of the support frame (201), and two reset rods (303) are fixedly connected to opposite sides of the inner wall of the installation cavity (302), and the rod walls of the two reset rods (303) are sleeved with springs (306), and the rod walls of the two reset rods (303) are slidably connected with sliding blocks (307), and one side of the two sliding blocks (307) is fixedly connected to one end of the two springs (306) respectively.

4. The drain valve for an electric water heater according to claim 3, characterized in that: The limiting assembly (3) further comprises a limiting groove (301) formed on the inner wall of the dirt-blocking box (5); the inner wall of the limiting groove (301) is slidably connected to a limiting block (304); one end of the limiting block (304) penetrates the surface of the support frame (201) and extends into the interior of the installation cavity (302); the top surface and the bottom surface of the limiting block (304) are respectively fixedly connected to opposite sides of two sliding blocks (307).

5. The drain valve for an electric water heater according to claim 4, characterized in that: The control assembly (4) comprises a pushing block (402), one side of the pushing block (402) contacts one side of the limiting block (304), a side of the pushing block (402) away from the limiting block (304) is fixedly connected to a threaded rod (403), one end of the threaded rod (403) penetrates one side of the inner wall of the limiting groove (301) and extends to the surface of the dirt blocking box (5), and one end of the threaded rod (403) located on the surface of the dirt blocking box (5) is fixedly connected to a rotating handle (401).

6. The drain valve for an electric water heater according to claim 4, characterized in that: The two limit blocks (304) are trapezoidal in shape, and the inclined surfaces of the two limit blocks (304) face downwards.

7. The drain valve for an electric water heater according to claim 1, characterized in that: A connecting pipe (10) is fixedly connected to a side of the dirt-blocking box (5) away from the dirt-discharging pipe (1).

8. The drain valve for an electric water heater according to claim 5, characterized in that: The rod walls of the two threaded rods (403) are both threadedly connected to the inner wall of the dirt-trapping box (5).

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