Automatic replacement device for magnesium rods of electric water heaters

Abstract

The present invention relates to the technical field of magnesium rod replacement devices, specifically an automatic replacement device for magnesium rods of electric water heaters, comprising a water heater body, an electric hydraulic cylinder, a sewage structure, a mounting ring, a sewage head, a docking structure, a mounting structure, a limiting structure and a magnesium rod. A sewage structure is installed at the sewage outlet of the sewage head, which facilitates the discharge of sewage from the sewage structure to a designated position during the removal of the magnesium rod, thereby improving the neatness of the operation process; the docking structure is driven up and down by the electric hydraulic cylinder, and the mounting structure is driven up and down by the docking structure, thereby realizing automatic installation of the magnesium rod, making the installation and removal of the magnesium rod more convenient, without the need for other auxiliary tools, and having high operating efficiency. At the same time, it is convenient to regularly clean the inside of the water heater body, making it more convenient to check the use status of the magnesium rod; the mounting structure and the docking structure are limited by a limiting structure, which improves the operational stability of the mounting structure.

Description

Technical Field

[0001] The invention relates to the technical field of magnesium rod replacement devices, in particular to an automatic magnesium rod replacement device for an electric water heater. Background Art

[0002] An electric water heater refers to a water heater that uses electricity as energy for heating. Electric water heaters can be divided into three types according to the heating power: storage type (also known as volumetric type or heat storage type), instant type, and rapid heating type (also known as semi-storage type). Storage type electric water heaters require regular replacement of magnesium rods. There are two types of magnesium rod settings for storage type electric water heaters. One is set on the side and requires replacement by professionals, and the other is set on the bottom and can be replaced manually by users. At present, the replacement of storage type electric water heaters with bottom-mounted magnesium rods is basically manual.

[0003] When removing and replacing the magnesium rod, a wrench is required to remove the magnesium rod. Since the magnesium rod connector and the water heater are threaded, a lot of force is required during both the removal and installation process, and the installation tightness varies, resulting in low installation and removal efficiency. Although the structure is relatively simple, the replacement process still requires certain professional knowledge. It is inconvenient to check the condition of the magnesium rod inside the water heater in a timely manner. If the magnesium rod is not replaced in time, a large amount of dirt and impurities will be generated inside the water heater, corroding the inner tank of the water heater, affecting the thermal efficiency and heating effect, and even causing safety hazards such as leakage and water leakage.

[0004] Although the water source inside the water heater is discharged in advance during the removal of the magnesium rod, a large amount of sewage flows out of the drain outlet after the magnesium rod is removed. It is necessary to hold up a container at the bottom of the drain outlet to collect the sewage. The operation flexibility is poor and it is easy to cause a large amount of sewage to spray into the bathroom, which is not conducive to cleanliness during the operation. Summary of the Invention

[0005] In view of the problems in the prior art, the present invention provides an automatic replacement device for a magnesium rod of an electric water heater.

[0006] The technical solution adopted by the present invention to solve the technical problem is: an automatic replacement device for a magnesium rod of an electric water heater, comprising a water heater body, a mounting ring fixed to the bottom end of the water heater body, and a drain head threadedly connected to the mounting ring; a drain structure is installed at the drain outlet of the side wall of the drain head, and the drain head is a hollow cylindrical structure. A mounting structure for mounting the magnesium rod is slidably provided inside the drain head;

[0007] The mounting structure includes a piston slidingly arranged inside the sewage discharge head and a rubber ring sleeved on the piston, the rubber ring is slidably connected to the inner wall of the sewage discharge head, a truncated cone-shaped sealing ring is installed on the top of the piston, the sealing ring is in contact with the sewage discharge head, and a magnesium rod is threadedly connected to the top of the piston; a pull rod is fixed to the bottom end of the piston, and a docking structure is installed at the bottom end of the pull rod, and the pull rod and the docking structure are limited by a limiting structure, and an electric hydraulic cylinder is installed on the side wall of the sewage discharge head, and the electric hydraulic cylinder drives the docking structure to move up and down.

[0008] Specifically, a driving block is installed on the outside of the sewage discharge head, and the driving block is a hexagonal prism structure.

[0009] Specifically, a second sealing ring is sleeved on the top end of the sewage discharge head, and the second sealing ring is in conflict with the mounting ring.

[0010] Specifically, the piston and the pull rod are fixed by a second bolt, the second bolt is rotationally connected to the piston, the second bolt is threadedly connected to the pull rod, a first sealing ring is in contact with the second bolt and the piston, and the magnesium rod is at the top of the second bolt.

[0011] Specifically, the docking structure includes a top ring, a rotating sleeve and a bottom ring. The bottom end of the electric hydraulic cylinder is fixed with the bottom ring and the top ring by a first bolt. The top ring is in contact with the bottom end of the electric hydraulic cylinder. The rotating sleeve is located between the top ring and the bottom ring. The rotating sleeve and the bottom ring are rotatably connected. A docking rod with an arc shape at one end facing the pull rod is installed on the rotating sleeve. The arc center of the docking rod coincides with the axial center of the rotating sleeve, and the docking rod is engaged with the limit groove on the pull rod.

[0012] Specifically, the limiting structure includes a push block and a limiting block. A sliding groove is provided at the bottom end of the docking rod. A push block is provided for sliding inside the sliding groove. The thickness of the vertical section of the push block is greater than the thickness of the arc section. A limiting block is installed at the bottom end of the push block, and the limiting block is engaged with the limiting hole at the bottom end of the pull rod.

[0013] Specifically, a spring is provided between the push block and the docking rod, and the spring is located inside the sliding groove.

[0014] Specifically, an anti-slip rod is threadedly connected to the docking rod, the anti-slip rod passes through the spring, and the push block is slidably connected to the anti-slip rod.

[0015] Specifically, the sewage discharge structure includes a connecting head, a connecting head is installed at the sewage outlet of the sewage discharge head, a fixing sleeve is threadedly connected to the connecting head, the fixing sleeve is rotatably connected to the sewage pipe, a gasket is abutted between the sewage pipe and the connecting head, and the gasket is inside the fixing sleeve.

[0016] Specifically, a fixing ring is fixed to one end of the sewage pipe away from the fixing sleeve, a hanging ring is installed on the fixing ring, a hook is installed on the water heater body, and the hanging ring is hung on the hook.

[0017] The beneficial effects of the present invention are:

[0018] The automatic replacement device for magnesium rods of an electric water heater described in the present invention has a sewage discharge structure installed at the sewage outlet of the sewage head, which facilitates the discharge of sewage from the sewage discharge structure to a designated location during the removal of the magnesium rods, thereby improving the cleanliness of the operation process.

[0019] The automatic replacement device for the magnesium rod of an electric water heater described in the present invention drives the docking structure to move up and down through an electric hydraulic cylinder, and drives the installation structure to move up and down through the docking structure, thereby realizing automatic installation of the magnesium rod, making the installation and disassembly of the magnesium rod more convenient, without the need to use other auxiliary tools, and having high operating efficiency. At the same time, it is convenient to regularly clean the inside of the water heater body, making it more convenient to check the usage status of the magnesium rod.

[0020] In the automatic replacement device for magnesium rods of an electric water heater described in the present invention, the mounting structure and the docking structure are limited by a limiting structure, so that the operating stability of the mounting structure is better and the disassembly of the mounting structure is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below with reference to the accompanying drawings and examples.

[0022] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of an automatic replacement device for magnesium rods in electric water heaters provided by the present invention;

[0023] Figure 2 for Figure 1 An enlarged schematic diagram of the structure of section A is shown;

[0024] Figure 3 This is a schematic diagram of the connection structure between the mounting ring and the sewage discharge head of the present invention;

[0025] Figure 4 It is a partially enlarged schematic diagram of a cross section of the present invention;

[0026] Figure 5 for Figure 4 An enlarged schematic diagram of the structure of part B is shown;

[0027] Figure 6 for Figure 4 The enlarged schematic diagram of the C-section structure is shown;

[0028] Figure 7 for Figure 4 An enlarged schematic diagram of the D portion structure is shown;

[0029] Figure 8 This is a schematic diagram of the connection structure between the connector and the fixing sleeve of the present invention;

[0030] Figure 9 It is a schematic diagram of the decomposition structure of the present invention;

[0031] Figure 10 It is a schematic diagram of the connection structure between the mounting structure and the limiting structure of the present invention;

[0032] Figure 11 It is a bottom view of the docking structure of the present invention.

[0033] In the figure: 1. water heater body; 2. electric hydraulic cylinder; 3. sewage discharge structure; 301. sewage discharge pipe; 302. fixing ring; 303. hanging ring; 304. hook; 305. connector; 306. fixing sleeve; 307. gasket; 4. mounting ring; 5. sewage discharge head; 6. docking structure; 601. top ring; 602. rotating sleeve; 603. bottom ring; 604. first bolt; 605. docking rod; 606. slide groove; 7. mounting structure; 701. pull rod; 702. limiting hole; 703. piston; 704. rubber ring; 705. sealing ring; 706. first sealing ring; 707. second bolt; 708. limiting groove; 8. limiting structure; 801. push block; 802. limiting block; 803. spring; 804. anti-drop rod; 9. second sealing ring; 10. driving block; 11. magnesium rod. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0035] like Figures 1-9 and Figure 11 As shown, the automatic replacement device for the magnesium rod of an electric water heater according to the present invention comprises a water heater body 1, a mounting ring 4 fixed to the bottom end of the water heater body 1, and a drain head 5 threadedly connected to the mounting ring 4; a drain structure 3 is installed at the drain outlet of the side wall of the drain head 5, and the drain head 5 is a hollow cylindrical structure. A mounting structure 7 for mounting the magnesium rod 11 is slidably provided inside the drain head 5;

[0036] The mounting structure 7 includes a piston 703 that is slidably arranged inside the sewage discharge head 5 and a rubber ring 704 that is sleeved on the piston 703. The rubber ring 704 is slidably connected to the inner wall of the sewage discharge head 5. A truncated cone-shaped sealing ring 705 is installed on the top of the piston 703. The sealing ring 705 contacts the sewage discharge head 5. The top of the piston 703 is threadedly connected to a magnesium rod 11. A pull rod 701 is fixed to the bottom end of the piston 703. A docking structure 6 is installed on the bottom end of the pull rod 701. The pull rod 701 and the docking structure 6 It is limited by a limiting structure 8, and an electric hydraulic cylinder 2 is installed on the side wall of the sewage head 5, and the electric hydraulic cylinder 2 drives the docking structure 6 to move up and down; the docking structure 6 is driven up and down by the electric hydraulic cylinder 2, and the mounting structure 7 is driven up and down by the docking structure 6, thereby realizing the automatic installation of the magnesium rod 11, making the installation and disassembly of the magnesium rod 11 more convenient, without the use of other auxiliary tools, and high operating efficiency. At the same time, it is convenient to regularly clean the inside of the water heater body 1, making it more convenient to check the usage status of the magnesium rod 11.

[0037] Specifically, such as Figure 4-Figure 9 and Figure 11 As shown, a driving block 10 is installed on the outside of the sewage drain head 5. The driving block 10 is a hexagonal prism structure. A second sealing ring 9 is sleeved on the top of the sewage drain head 5. The second sealing ring 9 is in conflict with the mounting ring 4. Use a wrench to rotate the driving block 10 counterclockwise so that the driving block 10 drives the sewage drain head 5 to rotate, so that the sewage drain head 5 is separated from the mounting ring 4. The sewage drain head 5 can be disassembled and the damaged sewage drain head 5 can be replaced. The second sealing ring 9 makes the sealing between the sewage drain head 5 and the mounting ring 4 better.

[0038] Specifically, such as Figure 4-Figure 7 and Figure 9 As shown, the piston 703 and the pull rod 701 are fixed by a second bolt 707, the second bolt 707 is rotatably connected to the piston 703, the second bolt 707 is threadedly connected to the pull rod 701, and a first sealing ring 706 is in contact with the second bolt 707 and the piston 703. The first sealing ring 706 makes the overall sealing of the piston 703 better, and the magnesium rod 11 is at the top of the second bolt 707. When the piston 703 and the pull rod 701 need to be disassembled, the second bolt 707 can be rotated counterclockwise.

[0039] Specifically, such as Figure 1-Figure 7 、 Figure 9 、 Figure 10 and Figure 11As shown, the docking structure 6 includes a top ring 601, a rotating sleeve 602 and a bottom ring 603. The bottom end of the electric hydraulic cylinder 2 is fixed with the bottom ring 603 and the top ring 601 by a first bolt 604. The top ring 601 is in contact with the bottom end of the electric hydraulic cylinder 2. The rotating sleeve 602 is located between the top ring 601 and the bottom ring 603. The rotating sleeve 602 and the bottom ring 603 are rotatably connected. A docking rod 605 with an arc-shaped end facing the pull rod 701 is installed on the rotating sleeve 602. The arc center of the docking rod 605 coincides with the axis center of the rotating sleeve 602, and the docking rod 605 is engaged with the limiting groove 708 on the pull rod 701.

[0040] The limiting structure 8 includes a push block 801 and a limiting block 802. The bottom end of the docking rod 605 is provided with a slide groove 606. The push block 801 is slidably provided inside the slide groove 606. The thickness of the vertical section of the push block 801 is greater than the thickness of the arc section. The bottom end of the push block 801 is installed with a limiting block 802. The limiting block 802 is engaged with the limiting hole 702 at the bottom end of the pull rod 701. A spring 803 is in contact between the push block 801 and the docking rod 605. The spring 803 is inside the slide groove 606. An anti-slip rod 804 is threadedly connected to the docking rod 605. The anti-slip rod 804 runs through the spring 803. The push block 801 is slidably connected to the anti-slip rod 804.

[0041] When the top surface of piston 703 is at the bottom end of the sewage outlet of sewage head 5, electric hydraulic cylinder 2 stops extending, and the sewage outlet on the side wall of sewage head 5 is connected with the interior of water heater body 1, and sewage is discharged from the interior of water heater body 1 through connector 305. When sewage is discharged, electric hydraulic cylinder 2 continues to extend, and docking rod 605 drives piston 703 to slide completely out of sewage head 5. At this time, the use of magnesium rod 11 can be observed intuitively.

[0042] When the magnesium rod 11 needs to be replaced, hold the docking rod 605 by hand, press the push block 801, the push block 801 slides into the slide groove 606, the push block 801 slides with the anti-slip rod 804, the push block 801 is compressed against the spring 803, and the push block 801 drives the limit block 802 to separate from the limit hole 702, and then pull the docking rod 605 upward along the axis of the rotating sleeve 602, the docking rod 605 and the limit groove 708 on the pull rod 701 are not engaged, the docking rod 605 no longer limits the pull rod 701 in the vertical direction, and then hold the pull rod 701 to completely remove the magnesium rod 11 from the sewage head 5, rotate the unusable magnesium rod 11 counterclockwise, and then fix the new magnesium rod 11 on the top of the piston 703 clockwise, slide the piston 703 and its magnesium rod 11 into the sewage head 5, hold the The connecting rod 605 presses the push block 801, and the push block 801 slides into the slide groove 606. The push block 801 is compressed by the spring 803, and then the docking rod 605 is pushed upward along the axis of the rotating sleeve 602. The docking rod 605 is engaged with the limit groove 708 on the pull rod 701. When the limit block 802 corresponds to the limit hole 702, the push block 801 is released, the spring 803 extends, and the spring 803 resists the push block 801. The push block 801 drives the limit block 802 to engage with the limit hole 702, making it impossible for the pull rod 701 to move with the docking rod 605, thereby improving stability. Then the electric hydraulic cylinder 2 contracts and automatically drives the piston 703 to move upward. The rubber ring 704 and the sealing ring 705 on the piston 703 seal the sewage head 5, making the installation of the magnesium rod 11 more convenient and quick.

[0043] Specifically, such as Figures 1-8 As shown, the sewage discharge structure 3 includes a connector 305, a connector 305 is installed at the sewage outlet of the sewage head 5, a fixing sleeve 306 is threadedly connected to the connector 305, the fixing sleeve 306 is rotatably connected to the sewage pipe 301, a gasket 307 is abutted between the sewage pipe 301 and the connector 305, the gasket 307 is inside the fixing sleeve 306, a fixing ring 302 is fixed to the end of the sewage pipe 301 away from the fixing sleeve 306, a hanging ring 303 is installed on the fixing ring 302, and a hook 303 is installed on the water heater body 1. 04, the hanging ring 303 is hung on the hook 304; when the magnesium rod 11 needs to be replaced, the hanging ring 303 is removed from the hook 304, so that the end of the sewage pipe 301 is aligned with the toilet or sewer, so that the sewage is directly discharged to the designated location. The sewage pipe 301 can be selected as needed. When the sewage pipe 301 is not in use, the fixing sleeve 306 is rotated counterclockwise to separate the fixing sleeve 306 from the connecting head 305. There is a gasket 307 between the sewage pipe 301 and the connecting head 305 to make the sealing performance between the sewage pipe 301 and the connecting head 305 better.

[0044] When the present invention is in use, when the magnesium rod 11 needs to be replaced, the hanging ring 303 is removed from the hook 304, and the end of the sewage pipe 301 is aligned with the toilet or sewer, so that the sewage is directly discharged to the designated location. The sewage pipe 301 can be selected as needed. When the sewage pipe 301 is not in use, the fixing sleeve 306 is rotated counterclockwise to separate the fixing sleeve 306 from the connector 305. There is a gasket 307 between the sewage pipe 301 and the connector 305, which makes the sealing performance between the sewage pipe 301 and the connector 305 better.

[0045] The extension and retraction of the electric hydraulic cylinder 2 is controlled by the control panel of the water heater body 1 (the model of the electric hydraulic cylinder 2 is SXTL). The extension of the electric hydraulic cylinder 2 drives the top ring 601 and the bottom ring 603 to move downward, and the top ring 601 and the bottom ring 603 drive the rotating sleeve 602 to move downward, and the rotating sleeve 602 drives the docking rod 605 to move downward, and the docking rod 605 pulls the pull rod 701 to move downward, so that the pull rod 701 pulls the piston 703 to move downward, and the piston 703 drives the rubber ring 704 and the sealing ring 705 to move downward. When the top surface of the piston 703 is at the bottom end of the sewage outlet of the sewage head 5, the electric hydraulic cylinder 2 stops extending, and the sewage outlet on the side wall of the sewage head 5 is connected to the inside of the water heater body 1. The sewage is discharged from the inside of the water heater body 1 through the connecting head 305. When the sewage is discharged, the electric hydraulic cylinder 2 continues to extend, and the docking rod 605 drives the piston 703 to slide completely out of the sewage head 5. At this time, the use of the magnesium rod 11 can be intuitively observed;

[0046] When the magnesium rod 11 needs to be replaced, hold the docking rod 605 by hand, press the push block 801, the push block 801 slides into the slide groove 606, the push block 801 slides with the anti-slip rod 804, the push block 801 is compressed against the spring 803, and the push block 801 drives the limit block 802 to separate from the limit hole 702, and then pull the docking rod 605 upward along the axis of the rotating sleeve 602, the docking rod 605 and the limit groove 708 on the pull rod 701 are not engaged, the docking rod 605 no longer limits the pull rod 701 in the vertical direction, and then hold the pull rod 701 to completely remove the magnesium rod 11 from the sewage head 5, rotate the unusable magnesium rod 11 counterclockwise, and then fix the new magnesium rod 11 on the top of the piston 703 clockwise, slide the piston 703 and its magnesium rod 11 into the sewage head 5, hold the The connecting rod 605 presses the push block 801, and the push block 801 slides into the slide groove 606. The push block 801 is compressed by the spring 803, and then the docking rod 605 is pushed upward along the axis of the rotating sleeve 602. The docking rod 605 is engaged with the limit groove 708 on the pull rod 701. When the limit block 802 corresponds to the limit hole 702, the push block 801 is released, the spring 803 extends, and the spring 803 resists the push block 801. The push block 801 drives the limit block 802 to engage with the limit hole 702, making it impossible for the pull rod 701 to move with the docking rod 605, thereby improving stability. Then the electric hydraulic cylinder 2 contracts and automatically drives the piston 703 to move upward. The rubber ring 704 and the sealing ring 705 on the piston 703 seal the sewage head 5, making the installation of the magnesium rod 11 more convenient and quick.

[0047] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0048] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An automatic replacement device for magnesium rods in an electric water heater, comprising a water heater body, a mounting ring fixed to the bottom end of the water heater body, and a drain head threadedly connected to the mounting ring; characterized in that: A sewage discharge structure is installed at the sewage outlet on the side wall of the sewage discharge head. The sewage discharge head is a hollow cylindrical structure. The internal sliding of the sewage discharge head is provided with an installation structure for installing a magnesium rod. The mounting structure includes a piston slidably arranged inside the sewage discharge head and a rubber ring sleeved on the piston, the rubber ring is slidably connected to the inner wall of the sewage discharge head, a truncated cone-shaped sealing ring is installed on the top of the piston, the sealing ring contacts the sewage discharge head, and a magnesium rod is threadedly connected to the top of the piston; a pull rod is fixed to the bottom end of the piston, and a docking structure is installed at the bottom end of the pull rod. The pull rod and the docking structure are limited by a limiting structure, and an electric hydraulic cylinder is installed on the side wall of the sewage discharge head, which drives the docking structure to move up and down; The piston and the pull rod are fixed by a second bolt, the second bolt is rotatably connected to the piston, the second bolt is threadedly connected to the pull rod, a first sealing ring is in contact with the second bolt and the magnesium rod is at the top end of the second bolt; the docking structure includes a top ring, a rotating sleeve and a bottom ring, the bottom end of the electric hydraulic cylinder is fixed with a bottom ring and a top ring by a first bolt, the top ring is in contact with the bottom end of the electric hydraulic cylinder, the rotating sleeve is between the top ring and the bottom ring, the rotating sleeve and the bottom ring are rotatably connected, and a docking rod with an arc shape at one end facing the pull rod is installed on the rotating sleeve, the arc center of the docking rod coincides with the axis center of the rotating sleeve, and the docking rod is engaged with the limit groove on the pull rod; The limiting structure includes a push block and a limit block. A slide groove is provided at the bottom end of the docking rod, and a push block is provided for sliding inside the slide groove. The thickness of the vertical section of the push block is greater than the thickness of the arc section. A limit block is installed at the bottom end of the push block, and the limit block is engaged with the limit hole at the bottom end of the pull rod; there is a spring in contact between the push block and the docking rod, and the spring is inside the slide groove; an anti-slip rod is threadedly connected to the docking rod, and the anti-slip rod passes through the spring, and the push block is slidably connected to the anti-slip rod; the sewage discharge structure includes a connector, and a connector is installed at the sewage outlet. A fixed sleeve is threadedly connected to the connector, and the fixed sleeve is rotatably connected to the sewage pipe. A gasket is in contact between the sewage pipe and the connector, and the gasket is inside the fixed sleeve.

2. The automatic replacement device for magnesium rods of an electric water heater according to claim 1, characterized in that: A driving block is installed on the outside of the sewage discharge head, and the driving block is a hexagonal prism structure.

3. The automatic replacement device for magnesium rods of an electric water heater according to claim 1, characterized in that: The top end of the sewage discharge head is sleeved with a second sealing ring, which contacts the mounting ring.

4. The automatic replacement device for magnesium rods of an electric water heater according to claim 1, characterized in that: A fixing ring is fixed on one end of the sewage pipe away from the fixing sleeve, a hanging ring is installed on the fixing ring, a hook is installed on the water heater body, and the hanging ring is hung on the hook.

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