Connecting structure for gas boiler

Abstract

The utility model provides a connecting structure for a gas boiler, which comprises a water passing tank and a water inlet pipe arranged on one side of the water passing tank, a blow-off pipe is arranged below the water passing tank, one end of the blow-off pipe is connected with the water passing tank through a first control valve, and the other end of the blow-off pipe is provided with a second control valve. A water drainage pipe is arranged at the position, corresponding to the position between the first control valve and the water inlet pipe, of the water passing tank, a vertically-upward vertical pipe is arranged at the end, extending into the water passing tank, of the water drainage pipe, one end of the vertical pipe is communicated with the water drainage pipe, the other end of the vertical pipe corresponds to the position above the water inlet pipe, and a filter screen cover is arranged at the end, corresponding to the position above the water inlet pipe, of the vertical pipe. The connecting structure for the gas-fired boiler has the advantages of being simple in structure, easy to install and use, not prone to blocking, stable and reliable, the influence of the connecting structure on the water supply stability of the gas-fired boiler in the maintaining and cleaning process is small, and the operation stability of the gas-fired boiler can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas boilers, in particular to a connection structure for gas boilers. Background Art

[0002] Hot water boilers include electric hot water boilers, oil-fired hot water boilers, gas-fired hot water boilers and coal-fired hot water boilers. Gas-fired boilers are boilers that produce hot water, and are thermal energy equipment that uses the heat energy released by gas combustion to heat water to a rated temperature. At present, because tap water usually contains a certain amount of impurities such as mud, iron filings, etc., as the tap water is heated, it is extremely easy to produce scale and precipitate in the gas boiler, which not only affects the heat exchange efficiency of the gas boiler, but also causes pipeline blockage in severe cases, thereby causing damage to the gas boiler. Filters are usually used for filtering on existing gas boilers, but the existing filters are directly connected to the connecting pipelines, and the filters are prone to blockage, which affects the water intake efficiency of the gas boiler, is not conducive to the safe and stable operation of the gas boiler, and the filters in the connecting pipelines are inconvenient to clean and maintain, which also increases the difficulty of operation for operation and maintenance personnel. Utility Model Content

[0003] In view of this, the utility model aims to provide a connection structure for a gas boiler to solve the problem that when installing a filter screen on a connecting pipeline for an existing gas boiler, the filter screen is inconvenient to clean and maintain, which affects the stable operation of the gas boiler.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A connection structure for a gas boiler comprises a water transfer tank and a water inlet pipe arranged on one side of the water transfer tank, a sewage pipe is arranged below the water transfer tank, one end of the sewage pipe is connected to the water transfer tank through a first control valve, and the other end is provided with a second control valve, a drain pipe is arranged on the water transfer tank at a position corresponding to between the first control valve and the water inlet pipe, a vertical pipe is arranged vertically upward at one end of the drain pipe extending into the water transfer tank, one end of the vertical pipe is connected to the drain pipe, and the other end is arranged corresponding to above the water inlet pipe, and a filter screen is arranged at one end of the vertical pipe corresponding to above the water inlet pipe.

[0006] Furthermore, the vertical pipe is coaxially arranged with the water transfer tank, and the water inlet pipe is arranged at one side of the vertical pipe.

[0007] Furthermore, a spiral guide plate is provided on the vertical pipe at a position corresponding to the water inlet pipe.

[0008] Furthermore, the filter screen cover is a cylindrical or conical structural member, and the filter screen cover is coaxially arranged with the vertical pipe.

[0009] Furthermore, a first transparent window is provided on the sewage pipe.

[0010] Furthermore, a detachable sealing cover is provided above the water transfer tank.

[0011] Furthermore, a second transparent window is provided on the water transfer tank or the sealing cover at a position corresponding to the filter screen cover.

[0012] Furthermore, a recessed portion is provided on the water transfer tank at a position corresponding to the sewage pipe.

[0013] Compared with the prior art, the connection structure for a gas boiler described in the utility model has the following advantages:

[0014] The connection structure for a gas boiler described in the utility model has the advantages of simple structure, easy installation and use, not easy to be blocked, stable and reliable, and this connection structure has little effect on the water supply stability of the gas boiler during maintenance and cleaning, which is beneficial to improving the stability of the operation of the gas boiler. By arranging a vertical upward vertical pipe on the drain pipe, and arranging the upper end of the vertical pipe corresponding to the upper part of the water inlet pipe, the water entering the water tank through the water inlet pipe can be initially precipitated in the water tank first, reducing the possibility of impurities such as mud, rust and so on entering the drain pipe. At the same time, by first using the water tank for precipitation and then using the filter screen cover for filtering, the interception and filtering pressure at the filter screen cover is reduced, making the filter screen cover less likely to be blocked, which is beneficial to further improve the stability and safety of the operation of the gas boiler. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0016] Figure 1 This is a structural schematic diagram of a connection structure for a gas boiler according to an embodiment of the utility model;

[0017] Figure 2 The present invention is a schematic diagram of the internal structure of a water transfer tank in a connection structure for a gas boiler according to an embodiment of the present invention.

[0018] Description of reference numerals:

[0019] 1. Water transfer tank; 2. Water inlet pipe; 3. Drain pipe; 4. Sewage pipe; 5. Second control valve; 6. First control valve; 7. First transparent window; 8. Sealing cover; 9. Second transparent window; 10. Vertical pipe; 11. Guide plate; 12. Filter screen cover; 13. Recessed portion. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0024] A connection structure for a gas boiler, such as Figure 1 and Figure 2 As shown, it includes a water transfer tank 1 and a water inlet pipe 2 arranged on one side of the water transfer tank 1, a sewage pipe 4 is arranged below the water transfer tank 1, one end of the sewage pipe 4 is connected to the water transfer tank 1 through a first control valve 6, and the other end is provided with a second control valve 5, a drain pipe 3 is arranged on the water transfer tank 1 at a position corresponding to between the first control valve 6 and the water inlet pipe 2, and one end of the drain pipe 3 extending into the water transfer tank 1 is provided with a vertical standpipe 10 extending vertically upwards, one end of the standpipe 10 is connected to the drain pipe 3, and the other end is arranged corresponding to above the water inlet pipe 2, and one end of the standpipe 10 corresponding to above the water inlet pipe 2 is provided with a filter screen cover 12.

[0025] Exemplarily, the water inlet pipe 2 and the drain pipe 3 are both fixed on the water tank 1, and the vertical pipe 10 is fixed to one end of the drain pipe 3 extending into the water tank 1. One end of the vertical pipe 10 is connected to the drain pipe 3, and the other end is connected to the water tank 1 through the filter screen cover 12. By arranging the vertical vertical pipe 10 on the drain pipe 3, and arranging the upper end of the vertical pipe 10 corresponding to the upper part of the water inlet pipe 2, the water entering the water tank 1 through the water inlet pipe 2 can be initially precipitated in the water tank 1, thereby reducing the possibility of impurities such as silt and rust entering the drain pipe 3.

[0026] Optionally, the sewage pipe 4 is coaxially arranged with the water tank 1, and the first control valve 6 and the second control valve 5 can both adopt existing plate valves or butterfly valves to facilitate the discharge of impurities such as mud, iron filings, etc. in the water tank 1. Among them, the first control valve 6 and the second control valve 5 can both be installed in the existing valve installation method, and those skilled in the art can also select a suitable installation method according to actual needs to achieve the connection between the valve and the pipeline or the water tank 1, which will not be repeated here.

[0027] In actual application, the operator can install this connection structure on the water inlet pipe 2 of the gas boiler. By setting the water inlet pipe 2 corresponding to one side of the water tank 1, the water entering the water tank 1 through the water inlet pipe 2 can flow in a spiral in the water tank 1, and the centrifugal force can accelerate the gathering of impurities to the sewage pipe 4 in the middle of the water tank 1, so that the impurities with larger mass such as mud, sand, iron filings, etc. can gather at the center of the vortex, that is, gather under the vertical pipe 10, so that the impurities enter the sewage pipe 4 for collection, and the clean water after the impurities are precipitated can enter the water inlet pipe 2 through the vertical pipe 10 to meet the water demand of the gas boiler. At the same time, by first using the water tank 1 for precipitation and then using the filter screen cover 12 for filtering, the interception and filtration pressure at the filter screen cover 12 is reduced, making the filter screen cover 12 less prone to clogging.

[0028] In addition, by gathering impurities into the drain pipe 4 at the bottom of the water tank 1, the operator can also gather the impurities into the drain pipe 4 by opening the first control valve 6, and then in the process of daily maintenance, close the first control valve 6 and open the second control valve 5 to remove the impurities from the drain pipe 4. The whole process has little impact on the water supply of the gas boiler and will not affect the normal and stable operation of the gas boiler, thereby improving the convenience of this connection structure during use and maintenance. At the same time, by conveniently cleaning the impurities in the water tank 1, it can also ensure that the water in the water tank 1 will not be polluted due to the accumulation of impurities, reducing the possibility of clogging of the filter screen cover 12, thereby reducing the difficulty of using and maintaining the filter screen cover 12.

[0029] Optionally, the vertical pipe 10 is coaxially arranged with the water tank 1, and the water inlet pipe 2 is arranged corresponding to one side of the vertical pipe 10. Specifically, by arranging the water inlet pipe 2 corresponding to one side of the vertical pipe 10, the spiral flow effect of the water entering the water tank 1 through the water inlet pipe 2 can be further improved, and the water flowing into the water tank 1 through the water inlet pipe 2 can flow rapidly with the vertical pipe 10 as the center and form a vortex, thereby accelerating the large mass of impurities to gather at the bottom of the water tank 1.

[0030] In actual application, a spiral guide plate 11 is provided on the vertical pipe 10 at a position corresponding to the water inlet pipe 2. Exemplarily, the guide plate 11 is fixed on the vertical pipe 10. By means of the spiral guide plate 11 provided on the vertical pipe 10, the guide plate 11 can further guide the water flow, guiding the water flow to flow along its spiral surface, so that the water entering the water tank 1 through the water inlet pipe 2 forms a vortex. In addition, by providing the spiral guide plate 11 corresponding to the water inlet pipe 2, the water entering through the water inlet pipe 2 can also flow downward under the guidance of the spiral guide plate 11, so that the water is first precipitated, and the water that has not been precipitated is prevented from directly entering the vertical pipe 10.

[0031] Optionally, a recessed portion 13 is provided on the water tank 1 at a position corresponding to the sewage pipe 4. The sewage pipe 4 is provided at the center of the recessed portion 13. The recessed portion 13 is provided to facilitate the impurities at the bottom of the water tank 1 to flow and converge into the sewage pipe 4, thereby preventing the impurities from being carried up again by the water flow and increasing the filtering burden of the filter screen 12. In addition, by collecting the impurities into the sewage pipe 4, the water flow in the water tank 1 is less likely to disturb the impurities in the sewage pipe 4.

[0032] Optionally, the filter screen cover 12 may be a cylindrical or conical structural member, and the filter screen cover 12 is coaxially arranged with the vertical pipe 10. Exemplarily, the filter screen cover 12 and the vertical pipe 10 may be connected in a detachable manner to facilitate subsequent cleaning or replacement of the filter screen cover 12. For example, the filter screen cover 12 and the vertical pipe 10 may be connected by threads, and those skilled in the art may also choose other ways to install the filter screen cover 12 according to actual needs, which will not be described in detail here.

[0033] In actual application, compared with general filter screens, the surface of the filter screen cover 12 with a cylindrical or conical structure is less likely to accumulate impurities, further reducing the possibility of clogging of the filter screen cover 12, ensuring that the filter screen cover 12 can continuously filter the water entering the drain pipe 3, and improving the stability of the connection structure for gas boiler water supply. In addition, the spirally flowing water can also continuously clean the surface of the filter screen cover 12 with a cylindrical or conical structure to prevent impurities from accumulating on the surface of the filter screen cover 12.

[0034] Optionally, a first transparent window 7 is provided on the sewage pipe 4. Exemplarily, the first transparent window 7 can be an existing glass mirror, and the first transparent window 7 and the sewage pipe 4 can be connected by a flange. Those skilled in the art can also choose other ways to install the first transparent window 7 according to actual needs, which will not be repeated here. By providing the first transparent window 7 on the sewage pipe 4, the operator can timely check the accumulation of impurities in the sewage pipe 4 through the first transparent window 7. When there are a lot of impurities accumulated in the sewage pipe 4, the operator can close the first control valve 6 and open the second control valve 5 to clean the impurities in the sewage pipe 4, which is easy to operate.

[0035] Optionally, a detachable sealing cover 8 is provided above the water tank 1. Exemplarily, a flange connection can also be adopted between the sealing cover 8 and the water tank 1. By providing a detachable sealing cover 8 on the water tank 1, when necessary, the operator can also replace or maintain the mesh cover in the water tank 1 by removing the sealing cover 8, which further reduces the maintenance and cleaning difficulty of this connection structure.

[0036] In actual application, since the upper end of the vertical pipe 10 is located above the water inlet pipe 2, during the process of removing the sealing cover 8 to clean and maintain the filter screen cover 12, the water inlet pipe 2 can still be used to supply water to the vertical pipe 10. The water entering the water tank 1 through the water inlet pipe 2 can still be precipitated under the guidance of the guide plate 11, and impurities are still not easy to enter the vertical pipe 10, which further reduces the impact of cleaning and maintaining the filter screen cover 12 on the stable operation of the gas boiler.

[0037] Optionally, a second transparent window 9 is provided at a position corresponding to the filter screen cover 12 on the water tank 1 or the sealing cover 8. Exemplarily, the second transparent window 9 may also adopt an existing glass mirror, and the second transparent window 9 and the water tank 1 or the sealing cover 8 may also be connected by a flange. Those skilled in the art may also choose other ways to install the second transparent window 9 according to actual needs, which will not be described here. By providing the second transparent window 9, the operator can check the blockage of the filter screen cover 12 through the second transparent window 9, so that the operator can clean and maintain the filter screen cover 12 as needed.

[0038] The connection structure for a gas boiler described in the utility model has the advantages of simple structure, easy installation and use, not easy to be blocked, stable and reliable, and this connection structure has little effect on the water supply stability of the gas boiler during maintenance and cleaning, which is beneficial to improving the stability of the operation of the gas boiler. By arranging a vertical upward vertical pipe on the drain pipe, and arranging the upper end of the vertical pipe corresponding to the upper part of the water inlet pipe, the water entering the water tank through the water inlet pipe can be initially precipitated in the water tank first, reducing the possibility of impurities such as mud, rust and so on entering the drain pipe. At the same time, by first using the water tank for precipitation and then using the filter screen cover for filtering, the interception and filtering pressure at the filter screen cover is reduced, making the filter screen cover less likely to be blocked, which is beneficial to further improve the stability and safety of the operation of the gas boiler.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. 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 connection structure for a gas boiler, characterized in that: The utility model comprises a water transfer tank (1) and a water inlet pipe (2) arranged on one side of the water transfer tank (1); a sewage discharge pipe (4) is arranged below the water transfer tank (1); one end of the sewage discharge pipe (4) is connected to the water transfer tank (1) through a first control valve (6); and the other end is provided with a second control valve (5); a drainage pipe (3) is arranged on the water transfer tank (1) at a position corresponding to between the first control valve (6) and the water inlet pipe (2); one end of the drainage pipe (3) extending into the water transfer tank (1) is provided with a vertical pipe (10) extending upward; one end of the vertical pipe (10) is connected to the drainage pipe (3); and the other end is arranged corresponding to the upper part of the water inlet pipe (2); and one end of the vertical pipe (10) corresponding to the upper part of the water inlet pipe (2) is provided with a filter screen cover (12).

2. A connection structure for a gas boiler according to claim 1, characterized in that: The vertical pipe (10) is coaxially arranged with the water transfer tank (1), and the water inlet pipe (2) is arranged corresponding to one side of the vertical pipe (10).

3. A connection structure for a gas boiler according to claim 1 or 2, characterized in that: A spiral guide plate (11) is provided on the vertical pipe (10) at a position corresponding to the water inlet pipe (2).

4. A connection structure for a gas boiler according to claim 1, characterized in that: The filter screen cover (12) is a columnar or conical structural member, and the filter screen cover (12) is coaxially arranged with the vertical pipe (10).

5. A connection structure for a gas boiler according to claim 1, characterized in that: The sewage discharge pipe (4) is provided with a first transparent window (7).

6. A connection structure for a gas boiler according to claim 1, characterized in that: A detachable sealing cover (8) is provided above the water transfer tank (1).

7. A connection structure for a gas boiler according to claim 6, characterized in that: A second transparent window (9) is provided on the water transfer tank (1) or the sealing cover (8) at a position corresponding to the filter screen cover (12).

8. A connection structure for a gas boiler according to claim 1, characterized in that: A recessed portion (13) is provided on the water transfer tank (1) at a position corresponding to the sewage discharge pipe (4).

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