Constant-pressure water replenishing device for expansion tank

Abstract

The utility model discloses a constant-pressure water replenishing device for an expansion tank in the technical field of expansion tanks, which comprises an expansion tank main body, a water storage air bag main body is arranged in the expansion tank main body, a water replenishing pipe is communicated above the water storage air bag main body, and a switch of the water replenishing pipe is controlled through an electric valve. Meanwhile, an air pressure detector is arranged at the bottom end in the expansion tank main body, so that the air pressure detector detects the air pressure state in the expansion tank main body, and when the air pressure in the expansion tank main body is reduced to a certain threshold value, the problem that in the background technology, a water supplementing device of an existing expansion tank is often damaged after the water pressure in a water pipe is stable is solved; the problem that normal use of the water pipe is affected due to the fact that the water pressure of the water pipe is not stable enough when the water pipe replenishes water to the expansion tank when the water pipe supplies water to the expansion tank is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of expansion tank, concretely to a kind of expansion tank constant pressure water replenishing device. BACKGROUND

[0002] Expansion tank is a kind of equipment for storing and absorbing the liquid volume change caused by thermal expansion and cold contraction in system, its main structure is usually made of carbon steel material, surface is covered with rust-proof baking varnish layer, inside is equipped with EPDM environmental protection rubber made air bag, between tank body and air bag, it has been pre-charged with gas at factory, without additional gas, expansion tank absorbs excess liquid when liquid volume expands, reduces system pressure by its unique working principle;When liquid loss pressure reduces, release gas pressure, squeeze out the liquid in air bag to water replenishing system, realize the function of pressure fluctuation buffering and partial water supply, the equipment is widely applied in heating system, water supply system and hot water and heating system.

[0003] The current expansion tank water replenishing device is usually after the water pressure in water pipe is stable, water is replenished to the state of gas pressure and water pressure balance by the connecting port of water pipe and expansion tank again, this water replenishing mode is prone to make the water pressure of water pipe not stable when water pipe replenishes expansion tank, so that the water supply of water pipe will appear short-time water quantity reduction, thereby affecting the normal use of water pipe, based on this, the utility model designs a kind of expansion tank constant pressure water replenishing device to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of expansion tank constant pressure water replenishing device to solve the problems of the current expansion tank water replenishing device in the background art, which is usually after the water pressure in water pipe is stable, water is replenished to the state of gas pressure and water pressure balance by the connecting port of water pipe and expansion tank again, this water replenishing mode is prone to make the water pressure of water pipe not stable when water pipe replenishes expansion tank, so that the water supply of water pipe will appear short-time water quantity reduction, thereby affecting the normal use of water pipe.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of expansion tank constant pressure water replenishing device, including expansion tank main body, the water storage air bag main body is arranged in the expansion tank main body, the water storage air bag main body bottom is provided with water pipe main body, the water storage air bag main body top is provided with bellow, the bellow one end is communicated with the water storage air bag main body top, the expansion tank main body top is fixed with water replenishing pipe, the water replenishing pipe one end close to the water storage air bag main body and the bellow other end are communicated, the expansion tank main body inside bottom is fixed with a plurality of gas pressure detectors, the water storage air bag main body top and the bellow interface are fixed with extrusion disc, the extrusion disc outside is fixed with sealing rubber ring, the expansion tank main body top surface is fixed with two extrusion cylinders symmetrically, the extrusion cylinder output end is fixed with pressure plate.

[0006] Preferably, the water storage air bag body top end is fixed with an extrusion disc at the bellows interface, the outer side of the extrusion disc is fixed with a sealing rubber ring, the expansion tank body top surface is symmetrically fixed with two extrusion cylinders, the output end of the extrusion cylinder is fixed with a pressure receiving plate, the bottom end of the pressure receiving plate is fixed with four conducting blocks, the bottom end of each conducting block is fixedly connected with the extrusion disc, the pressure receiving plate is internally provided with a limiting ring, the pressure receiving plate and the limiting ring are fixedly connected through a connecting plate, the bellows is movably sleeved in the limiting ring, and the expansion tank body top surface is provided with a vent hole.

[0007] Preferably, the water supplement pipe is provided with an electric valve, and the electric valve is electrically connected with the air pressure detector.

[0008] Preferably, the air pressure detectors are equidistantly arranged at the bottom end of the expansion tank body, and the corners of each air pressure detector are arc-shaped.

[0009] Preferably, the four conducting blocks are equidistantly fixed at the bottom end of the pressure receiving plate, and the output ends of the two extrusion cylinders are respectively located above two conducting blocks.

[0010] Preferably, the extrusion cylinder is a multi-stage cylinder, and the inner ring radius of the limiting ring is greater than the outer ring radius of the bellows.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] (1) The utility model discloses a water supplement device for expansion tank, which comprises a water storage air bag body, a bellows, an expansion tank body, a water supplement pipe, an electric valve and an air pressure detector.

[0013] (2) by setting the extrusion disc inside the expansion tank body upper, and setting the sealing rubber ring outside the extrusion disc, so that the extrusion disc is sealed with the expansion tank body inside, and the two extrusion cylinders on the top surface of the expansion tank body drive the pressure plate to move, so that the pressure plate drives the extrusion disc to move through the conduction block, so that the extrusion disc extrudes the air inside the water storage air bag body and the expansion tank body, solves the problem that when the water pressure of the water pipe body recovers and exceeds the air pressure inside the expansion tank body, the water flow in the water pipe body flows into the water storage air bag body, so that the water flow in the water pipe body is unstable. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0015] Figure 1 It is a perspective view of the structure of the present application;

[0016] Figure 2 It is a perspective view of the structure of the present application;

[0017] Figure 3 It is a perspective view of the structure of the present application;

[0018] Figure 4 It is a perspective view of the structure of the present application;

[0019] In the drawings, the components represented by each number are listed as follows:

[0020] 1, expansion tank body; 2, water storage air bag body; 3, water pipe body; 4, water supplement pipe; 5, electric valve; 6, air pressure detector; 7, corrugated pipe; 8, extrusion disc; 9, sealing rubber ring; 10, extrusion cylinder; 11, pressure plate; 12, conduction block; 13, connecting plate; 14, limiting ring; 15, air hole. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application, and obviously, the described embodiments are only some embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0022] Please refer to Figures 1-4The utility model provides a technical scheme: an expansion tank constant pressure water replenishing device, including expansion tank main body 1, expansion tank main body 1 inside is provided with water storage air bag main body 2, and water storage air bag main body 2 bottom is provided with water pipe main body 3, and water storage air bag main body 2 top is provided with bellow 7, and bellow 7 one end is communicated with water storage air bag main body 2 top, and expansion tank main body 1 top is fixed with water replenishing pipe 4, and water replenishing pipe 4 one end close to water storage air bag main body 2 is communicated with bellow 7 other end, and expansion tank main body 1 inside bottom is fixed with a plurality of air pressure detector 6, so that water storage air bag main body 2 carries out water replenishing through water replenishing pipe 4.

[0023] Wherein, water replenishing pipe 4 is provided with electric valve 5, and electric valve 5 is electrically connected with air pressure detector 6, and a plurality of air pressure detector 6 is equidistantly arranged at the bottom end inside expansion tank main body 1, and the corner of each air pressure detector 6 is arc-shaped, so that air pressure detector 6 controls electric valve 5 to automatically replenish water, and at the same time, damage of air pressure detector 6 to water storage air bag main body 2 is avoided when water storage air bag main body 2 deforms.

[0024] Please refer to Figures 1-4 Water storage air bag main body 2 top and bellow 7 interface are fixed with extrusion disc 8, and the outer side of extrusion disc 8 is fixed with sealing rubber ring 9, and the top surface of expansion tank main body 1 is fixed with two extrusion cylinders 10 symmetrically, and the output end of extrusion cylinder 10 is fixed with pressure receiving plate 11, and the bottom end of pressure receiving plate 11 is fixed with four conducting blocks 12, and the bottom end of each conducting block 12 is fixedly connected with extrusion disc 8, and the inside of pressure receiving plate 11 is provided with limiting ring 14, and pressure receiving plate 11 and limiting ring 14 are fixedly connected through connecting plate 13, and bellow 7 movably sleeves in the inside of limiting ring 14, and the top surface of expansion tank main body 1 is provided with air vent 15, so that the air pressure intensity inside expansion tank main body 1 is controlled by extrusion cylinder 10 through moving extrusion disc 8, thereby avoiding that the water flow inside water pipe main body 3 flows back into the inside of water storage air bag main body 2.

[0025] Wherein, four conducting blocks 12 are equidistantly fixed on the bottom end of pressure receiving plate 11, and the output end of two extrusion cylinders 10 is located above two conducting blocks 12 respectively, and extrusion cylinder 10 is multistage cylinder, and the inner ring radius of limiting ring 14 is greater than the outer ring radius of bellow 7, so that the stroke of extrusion cylinder 10 is adapted to the height of expansion tank main body 1, and at the same time, limiting ring 14 limits bellow 7.

[0026] The working principle of the whole is that when the water pressure in the water pipe body 3 is reduced, the air in the expansion tank body 1 is injected into the water pipe body 3 by extruding the water storage air bag body 2, when the water pressure in the water pipe body 3 is restored, the extrusion cylinder 10 is started, the extrusion cylinder 10 drives the pressure plate 11 to move, so that the pressure plate 11 drives the expansion tank body 1 to move downwardly through the transmission block 12, so that the extrusion disc 8 extrudes the air in the expansion tank body 1 and the water storage air bag body 2, thereby avoiding the water in the water pipe body 3 from flowing back into the water storage air bag body 2, and the air pressure in the expansion tank body 1 changes, when the air pressure triggers the sensing threshold of the air pressure detector 6, the air pressure detector 6 starts the electric valve 5, so that the electric valve 5 opens the water supplement pipe 4, at this time, the water flow in the water supplement pipe 4 is injected into the water storage air bag body 2, so that the water supplement pipe 4 supplements the water flow in the water storage air bag body 2, thereby avoiding the problem that the water flow in the water pipe body 3 is unstable due to the backflow of the water flow in the water storage air bag body 2 through the water pipe body 3.

[0027] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The preferred embodiments of the above disclosed application are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. An inflation tank pressure maintaining water supplementing device, comprising an inflation tank body (1), a water storage air bag body (2) is arranged inside the inflation tank body (1), a water delivery pipe body (3) is arranged at the bottom end of the water storage air bag body (2), characterized in that: a corrugated pipe (7) is arranged at the top end of the water storage air bag body (2), one end of the corrugated pipe (7) is communicated with the top end of the water storage air bag body (2), a water supplementing pipe (4) is fixed at the top end of the inflation tank body (1), one end of the water supplementing pipe (4) close to the water storage air bag body (2) is communicated with the other end of the corrugated pipe (7), a plurality of air pressure detectors (6) are fixed at the bottom end inside the inflation tank body (1); a pressing disc (8) is fixed at the interface between the top end of the water storage air bag body (2) and the corrugated pipe (7), a sealing rubber ring (9) is fixed on the outer side of the pressing disc (8), two pressing air cylinders (10) are fixed symmetrically on the top surface of the inflation tank body (1), a pressure receiving plate (11) is fixed at the output end of the pressing air cylinder (10).

2. The pressure maintaining water replenishing device for an expansion tank according to claim 1, wherein: four conducting blocks (12) are fixed at the bottom end of the pressure receiving plate (11), the bottom end of each conducting block (12) is fixedly connected with the pressing disc (8), a limiting ring (14) is arranged inside the pressure receiving plate (11), the pressure receiving plate (11) and the limiting ring (14) are fixedly connected through a connecting plate (13), the corrugated pipe (7) is movably sleeved inside the limiting ring (14), and a ventilation hole (15) is arranged on the top surface of the inflation tank body (1).

3. The water replenishing device for maintaining pressure in an expansion tank according to claim 1, wherein: An electric valve (5) is arranged on the water supplementing pipe (4), and the electric valve (5) is electrically connected with the air pressure detector (6).

4. The water replenishing device for maintaining pressure in an expansion tank according to claim 1, wherein: The plurality of air pressure detectors (6) are equidistantly arranged at the bottom end inside the inflation tank body (1), and the corners of each air pressure detector (6) are arc-shaped.

5. The water replenishing device for maintaining pressure in an expansion tank according to claim 2, wherein: The four conducting blocks (12) are equidistantly fixed at the bottom end of the pressure receiving plate (11), and the output ends of the two pressing air cylinders (10) are respectively located above the two conducting blocks (12).

6. The water replenishing device for maintaining pressure in an expansion tank according to claim 2, wherein: The pressing air cylinder (10) is a multi-stage air cylinder, and the inner ring radius of the limiting ring (14) is greater than the outer ring radius of the corrugated pipe (7).

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