Leakage-proof water heater flange

Abstract

The utility model relates to the technical field of flanges, in particular to a leakage-proof water heater flange. The anti-leakage flange comprises a flange plate, an installation groove is formed in the upper end of the flange plate, a flange pad is arranged on the inner wall of the installation groove, an anti-leakage assembly is arranged at the lower end of the flange plate, a limiting assembly is arranged on the inner wall of the installation groove, and the anti-leakage assembly comprises an annular air bag installed on the inner wall of the flange plate. An annular air bag is arranged on the flange pad, a rubber ring is fixedly connected to the arc surface of the annular air bag, the rubber ring is inserted into the flange pad, an extrusion air bag is installed in an inner cavity of the rubber ring, and the extrusion air bag is communicated with the annular air bag through a connecting pipe. The rubber ring is extruded into the flange gasket, so that the flange gasket and the flange plate are sealed, and the effect of preventing water from leaking out through a gap due to cold contraction of the flange gasket is achieved as far as possible.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flange technical field especially relates to a leakproof water heater flange. BACKGROUND

[0002] The flange is used for sealing between the water tank and the heating rod of the water heater, and the flange is composed of a flange plate, a flange pad and bolts. When the flange is used, the worker inserts the flange pad into the mounting groove on the flange plate, then pushes the flange plate to the water tank, inserts the heating rod on the surface of the flange plate into the water tank, then inserts the bolts into the flange plate, and fixes the flange plate to the water tank by screwing, so as to fix the flange plate and seal the water tank and the installed heating rod, thereby preventing water leakage.

[0003] The inventor found in daily work that when the flange is used, the flange pad is affected by thermal expansion and cold contraction due to cold weather in winter, so that the flange pad is cold contracted, and a gap may be generated between the flange pad and the mounting groove, and the water in the water tank may leak out through the gap. UTILITY MODEL CONTENTS

[0004] The utility model discloses a leakproof water heater flange to solve the problem that the flange pad is cold contracted due to cold weather in winter, a gap is generated between the flange pad and the mounting groove, and the water in the water tank may leak out through the gap.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a leakproof water heater flange, comprising a flange plate, an installation groove is formed in the upper end of the flange plate, a flange pad is arranged on the inner wall of the installation groove, a leakproof assembly is arranged on the lower end of the flange plate, a limiting assembly is arranged on the inner wall of the installation groove, the leakproof assembly comprises an annular air bag arranged on the inner wall of the flange plate, the circular arc surface of the annular air bag is fixedly connected with a rubber ring, and the rubber ring is inserted into the flange pad.

[0006] The effect of the above-mentioned components is that when the flange pad is prevented from leaking in winter, the annular air bag is filled with air, so that the rubber ring is extruded into the flange pad, thereby sealing between the flange pad and the flange plate, and avoiding water leakage due to cold contraction of the flange pad as much as possible.

[0007] Preferably, an extrusion air bag is arranged in the inner cavity of the rubber ring, and the extrusion air bag and the annular air bag are communicated by a connecting pipe.

[0008] The effect of the above-mentioned components is that after the extrusion air bag is filled with air, the rubber ring is inflated, and the sealing of the flange plate is affected by cold contraction of the rubber ring.

[0009] Preferably, one end of the annular air bag is fixedly connected with an air pipe, and the air pipe penetrates through the flange plate.

[0010] The above-mentioned components achieve the effect that the annular air bag is inflated through the air pipe.

[0011] Preferably, the lower end of the flange plate is fixedly connected with an air nozzle of an external air pump, and the air nozzle is fixed with the air pipe.

[0012] The above-mentioned components achieve the effect that the air pump is connected with the air nozzle, and the air bag is inflated and deflated through the air pump.

[0013] Preferably, the limiting assembly comprises a limiting ring fixedly connected to the bottom of the inner wall of the mounting groove, the limiting ring is inserted into the flange gasket, and a plurality of positioning blocks uniformly distributed are slidingly inserted into the two sides of the limiting ring.

[0014] The above-mentioned components achieve the effect that after the flange gasket is inserted into the mounting groove, the positioning blocks on the limiting ring are inserted into the flange gasket, so that the flange gasket is limited.

[0015] Preferably, springs are fixedly connected between the two positioning blocks, and a pull rope is fixedly connected between the two positioning blocks.

[0016] The above-mentioned components achieve the effect that the positioning blocks are reset through the springs.

[0017] Preferably, the pull rope penetrates through the flange plate, and the pull rope is located in the spring.

[0018] The above-mentioned components achieve the effect that the positioning blocks are pulled by pulling the pull rope.

[0019] Preferably, a sliding surface is formed in the upper end of the positioning block.

[0020] The above-mentioned components achieve the effect that the positioning blocks are inserted into the flange gasket through the sliding surface.

[0021] In summary, the beneficial effects of the utility model are as follows:

[0022] In the utility model, when the flange gasket is prevented from leaking in winter, the annular air bag is inflated to make the rubber ring be pressed into the flange gasket, so that the flange gasket and the flange plate are sealed, and the water leakage through the gap due to the cold shrinkage of the flange gasket is avoided as much as possible. DRAWINGS

[0023] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0024] Figure 2 It is the sectional view of the three-dimensional structure schematic diagram of the utility model;

[0025] Figure 3 It is the sectional view of the three-dimensional structure schematic diagram of the utility model leak-proof assembly;

[0026] Figure 4 It is the sectional view of the three-dimensional structure schematic diagram of the utility model limiting assembly.

[0027] Legend: 1, flange plate; 2, leak-proof assembly; 3, limiting assembly; 4, flange pad; 5, installation groove; 21, annular air bag; 22, rubber ring; 23, extrusion air bag; 24, air pipe; 25, air cock; 31, limiting ring; 32, positioning block; 33, pull rope; 34, spring; 35, sliding surface. DETAILED DESCRIPTION

[0028] Referring to Figure 1 And Figure 2 The utility model provides a technical scheme: a leak-proof water heater flange includes flange plate 1, the upper end of flange plate 1 is provided with installation groove 5, the inner wall of installation groove 5 is provided with flange pad 4, the lower end of flange plate 1 is provided with leak-proof assembly 2, and the inner wall of installation groove 5 is provided with limiting assembly 3.

[0029] The specific setting and function of leak-proof assembly 2 and limiting assembly 3 will be described below.

[0030] Referring to Figure 3 In the embodiment, leak-proof assembly 2 includes annular air bag 21 installed on the inner wall of flange plate 1, the circular arc surface of annular air bag 21 is fixedly connected with rubber ring 22, rubber ring 22 is inserted into flange pad 4, by setting leak-proof assembly 2, when preventing leakage of flange pad 4 in winter, annular air bag 21 is filled with gas, so that it is inflated, so that rubber ring 22 is extruded into flange pad 4, thereby sealing between flange pad 4 and flange plate 1, and further avoiding water leakage due to cold shrinkage of flange pad 4 as far as possible, the inner cavity of rubber ring 22 is provided with extrusion air bag 23, extrusion air bag 23 is communicated with annular air bag 21 by connecting pipe, after extrusion air bag 23 is filled with gas, it inflates rubber ring 22, avoiding that rubber ring 22 is affected by cold shrinkage and sealing flange plate 1, one end of annular air bag 21 is fixedly connected with air pipe 24, air pipe 24 penetrates flange plate 1, annular air bag 21 is inflated through air pipe 24, the lower end of flange plate 1 is fixedly connected with air cock 25 of external air pump, air cock 25 is fixed with air pipe 24, air pump is connected with air cock 25, and the air bag is inflated and deflated by air pump.

[0031] Referring to Figure 4As shown, in the embodiment: the limiting assembly 3 includes a limiting ring 31 fixedly connected to the bottom of the inner wall of the mounting groove 5, the limiting ring 31 is inserted into the flange pad 4, a plurality of evenly distributed positioning blocks 32 are slidingly inserted into the two sides of the limiting ring 31, after the flange pad 4 is inserted into the mounting groove 5, the positioning blocks 32 on the limiting ring 31 are inserted into the flange pad 4, thereby limiting the flange pad 4, a spring 34 is fixedly connected between the two positioning blocks 32, a pull rope 33 is fixedly connected between the two positioning blocks 32, the spring 34 is arranged to reset the positioning blocks 32, the pull rope 33 penetrates the flange plate 1, the pull rope 33 is located in the spring 34, pulling the pull rope 33 makes the positioning blocks 32 be pulled, a sliding surface 35 is arranged at the upper end of the positioning blocks 32, the sliding surface 35 assists the positioning blocks 32 to be clamped into the flange pad 4.

[0032] Working principle:

[0033] In use, the worker clamps the flange pad 4 into the mounting groove 5 on the flange plate 1, then pushes the flange plate 1 onto the water tank of the water heater, the heating rod welded on the surface of the flange plate 1 is inserted into the water tank, then the bolt is inserted into the flange plate 1 to be threadedly fixed with the water tank, thereby fixing the flange plate 1, and further sealing the water tank and the installed heating rod to prevent water leakage. When preventing leakage of the flange pad 4 in winter, the annular air bag 21 is inflated to make it bulge, so that the rubber ring 22 is squeezed into the flange pad 4, thereby sealing between the flange pad 4 and the flange plate 1, and further achieving the effect of avoiding water leakage through the gap due to cold contraction of the flange pad 4. After the squeeze air bag 23 is inflated, the rubber ring 22 is inflated to avoid the influence of the rubber ring 22 on the sealing of the flange plate 1 due to cold contraction. The annular air bag 21 is inflated through the air pipe 24, the air pump is connected with the air nozzle 25, the air bag is inflated and deflated by the air pump, after the flange pad 4 is inserted into the mounting groove 5, the positioning blocks 32 on the limiting ring 31 are inserted into the flange pad 4, thereby limiting the flange pad 4, the spring 34 is arranged to reset the positioning blocks 32, the pull rope 33 is pulled to make the positioning blocks 32 be pulled, and the sliding surface 35 is arranged to assist the positioning blocks 32 to be clamped into the flange pad 4.

[0034] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in other forms. Any skilled person in the art can modify or change the above disclosed technical content to equivalent embodiments applied to other fields, but any simple modification, equivalent change and alteration of the above embodiments without departing from the technical content of the present application, according to the technical essence of the present application, still belong to the protection scope of the present application. In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood in a broad sense. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be connected inside two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

Claims

1. A leak-proof water heater flange comprising a flange plate (1), characterized in that: The upper end of the flange plate (1) is provided with a mounting groove (5), the inner wall of the mounting groove (5) is provided with a flange pad (4), the lower end of the flange plate (1) is provided with a leakage prevention assembly (2), the inner wall of the mounting groove (5) is provided with a limiting assembly (3), the leakage prevention assembly (2) comprises an annular air bag (21) mounted on the inner wall of the flange plate (1), the circular arc surface of the annular air bag (21) is fixedly connected with a rubber ring (22), and the rubber ring (22) is inserted into the flange pad (4).

2. A leakproof water heater flange according to claim 1, wherein: An extrusion air bag (23) is mounted in the inner cavity of the rubber ring (22), and the extrusion air bag (23) and the annular air bag (21) are communicated through a connecting pipe.

3. A leakproof water heater flange according to claim 1, wherein: One end of the annular air bag (21) is fixedly connected with an air pipe (24), and the air pipe (24) penetrates the flange plate (1).

4. A leakproof water heater flange according to claim 2, wherein: The lower end of the flange plate (1) is fixedly connected with an air nozzle (25) of an external air pump, and the air nozzle (25) is fixed with the air pipe (24).

5. A leakproof water heater flange according to claim 4 wherein: The limiting assembly (3) comprises a limiting ring (31) fixedly connected to the inner wall bottom of the mounting groove (5), the limiting ring (31) is inserted into the flange pad (4), and a plurality of positioning blocks (32) uniformly distributed are slidingly inserted into the two sides of the limiting ring (31).

6. A leakproof water heater flange according to claim 5 wherein: A spring (34) is fixedly connected between the two positioning blocks (32), and a pull rope (33) is fixedly connected between the two positioning blocks (32).

7. A leakproof water heater flange according to claim 6 wherein: The pull rope (33) penetrates the flange plate (1), and the pull rope (33) is located in the spring (34).

8. A leakproof water heater flange according to claim 7, wherein: The upper end of the positioning block (32) is provided with a sliding surface (35).

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