Condensate water draining device of natural gas boiler

Abstract

The utility model relates to the technical field of natural gas boilers, in particular to a natural gas boiler condensate water drainage device which comprises a water-slag separation barrel, a flange plate fixedly connected to the bottom end of the water-slag separation barrel, a drainage pipe penetrating through the surface of the water-slag separation barrel, and a water inlet pipe fixedly connected to the inner surface of the upper end of the water-slag separation barrel. The bottom end of the water inlet pipe is in threaded connection with a fixing plate, the surface of the fixing plate is rotationally connected with a knocking bar, the surface of the fixing plate is fixedly connected with a filter screen, a clamping plate is inserted into the surface of the flange plate, the surface of the clamping plate is fixedly connected with a rubber pad, and the rubber pad is clamped between the flange plate and the flange plate cover; the drainage pipe has the beneficial effects that the detachable filter screen is arranged between the water inlet pipe and the flange plate, impurities can be collected and treated in a centralized mode, the situation that the impurities enter the drainage pipe and block the drainage pipe is avoided, the detachable clamping plate and the rubber pad are arranged, the accuracy and convenience of rubber pad position installation are improved, and the service life of the drainage pipe is prolonged. And poor sealing between the flange plate and the flange plate cover is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas boilers, in particular to a condensate drain device for a natural gas boiler. Background Art

[0002] Now a large number of coal-fired hot water boilers are replaced by natural gas boilers to reduce the pollution caused by coal burning to the environment. Natural gas has a high content of hydrogen, and the proportion of water vapor in the flue gas after natural gas combustion is high. Condensed water will be generated during the heat exchange between flue gas and water and air. The generation of condensed water is very helpful to improve the thermal efficiency of the boiler, so condensing natural gas boilers came into being. Condensed water needs to be removed in time so that the boiler can operate continuously, which is also conducive to extending the service life of the boiler.

[0003] The Chinese utility model patent with the authorization announcement number "CN208983000U" is specifically "a natural gas boiler condensate drain device". Its specification records that "the upper end of the elastic cleaning plate is plugged into the middle position of the lower inner side of the plug-in slot. When working, the water-slag separation cylinder is installed in a suitable position, and a proper amount of condensate is filled into the interior of the water-slag separation cylinder. The plug-in seat is fixed in a suitable position to prevent impurities from sticking to the lower inner wall of the water-slag separation cylinder during the water-slag separation process and affecting the cleaning work... The second sealing ring is arranged between the flange and the fixed discharge flange cover structure."

[0004] However, when the elastic cleaning plate cleans and scrapes impurities from the inner wall of the water-slag separation cylinder, the impurities will move with the water flow and float on the surface of the condensed water, causing the impurities to enter the drain pipe from the water suction port. After a long period of accumulation, blockage will occur, thereby affecting the flow of the drain pipe. Since the flange and the flange cover must be frequently disassembled to clean the inside of the water-slag separation cylinder, the sealing ring must be re-fixed and clamped each time. The operation steps are cumbersome and can easily lead to position deviations during the installation process, resulting in poor sealing and leakage. Utility Model Content

[0005] The purpose of the utility model is to provide a condensate drain device for a natural gas boiler to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a natural gas boiler condensate drain device, comprising a water-slag separation cylinder, a flange fixedly connected to the bottom end of the water-slag separation cylinder, a drain pipe passing through the surface of the water-slag separation cylinder, a water inlet pipe fixedly connected to the inner surface of the upper end of the water-slag separation cylinder, a fixing plate screwed to the bottom end of the water inlet pipe, a knocking rod rotatably connected to the surface of the fixing plate, a filter screen fixedly connected to the surface of the fixing plate, a clamping plate inserted into the surface of the flange, a rubber pad fixedly connected to the surface of the clamping plate, the rubber pad clamped between the flange and the flange cover, the flange and the flange cover are screwed together by bolts.

[0007] Preferably, the fixing plate is an annular plate structure with an "L" cross-section, and an inner surface of the fixing plate is provided with an internal thread, which is threadedly connected to an external thread provided on the bottom surface of the water inlet pipe.

[0008] Preferably, the surface of the fixed plate is provided with a plurality of rotating grooves distributed in an array, the rotating grooves are spherical grooves, the surface of the rotating grooves is rotatably connected with rotating balls, one end of the rotating balls is fixedly connected with a knocking rod, and the knocking rod consists of a long tube and a sphere.

[0009] Preferably, the filter screen has an end surface away from the fixed plate fixedly connected to a limit plate, the limit plate is an annular plate structure, and the limit plate is embedded in a limit groove opened on the surface of the flange, and the limit groove is an annular groove.

[0010] Preferably, a rubber groove is provided on the surface of the flange, the rubber groove is an annular groove, and two array-distributed plug blocks are fixedly connected to the surface of the rubber groove, the plug blocks are an arc-shaped plate structure with a "T" cross-section.

[0011] Preferably, the card plate has an annular plate structure, a slide groove is provided on the surface of the card plate, the slide groove is an annular groove with a "convex" cross-section, slots are provided on both sides of the surface of the card plate, the slots are connected with the slide groove, and the insert block passes through the slot and slides to the surface of the slide groove to limit the card plate.

[0012] Preferably, the surfaces of the flange and the flange cover are provided with a plurality of screw holes distributed in a circular array, and bolts are passed through the screw holes to screw the flange and the flange cover together.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The natural gas boiler condensate drain device proposed in the utility model can realize centralized collection and treatment of impurities by arranging a detachable filter screen between the water inlet pipe and the flange plate, thereby preventing impurities from entering the drain pipe and causing blockage thereof. The detachable clamping plate and rubber pad are arranged to improve the accuracy and convenience of the installation of the rubber pad position, thereby avoiding the loose sealing between the flange plate and the flange plate cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a half-section schematic diagram of the structure of the utility model;

[0017] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;

[0018] Figure 4 for Figure 2 Schematic diagram of the structure at B in the middle;

[0019] Figure 5 It is a partial schematic diagram of the structure of the utility model.

[0020] In the figure: 1. water-slag separation cylinder; 2. drain pipe; 3. water inlet pipe; 4. flange; 5. flange cover; 6. bolts; 7. screw holes; 8. filter screen; 9. fixing plate; 10. rotating groove; 11. rotating ball; 12. knocking rod; 13. slot; 14. limit plate; 15. limit groove; 16. rubber groove; 17. rubber pad; 18. plug block; 19. clamping plate; 20. slide groove. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of 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] Embodiment 1

[0023] See also Figure 1 to Figure 2The utility model provides a technical solution: a natural gas boiler condensate drain device, comprising a water-slag separation cylinder 1, the bottom end of the water-slag separation cylinder 1 is fixedly connected with a flange 4, the surface of the water-slag separation cylinder 1 is penetrated with a drain pipe 2, one end of the drain pipe 2 is arranged inside the water-slag separation cylinder 1, and the other end is arranged in the external environment, the upper end inner surface of the water-slag separation cylinder 1 is fixedly connected with a water inlet pipe 3, the bottom end of the water inlet pipe 3 is screwed with a fixing plate 9, the surface of the fixing plate 9 is rotatably connected with a knocking rod 12, during the water inlet process of the water inlet pipe 3, the water flow drives the knocking rod 12 to vibrate, so that the knocking rod 12 vibrates and knocks on the surface of the filter screen 8 to prevent the filter screen 8 from being blocked by the filter residue, the surface of the fixing plate 9 is fixedly connected with the filter screen 8, and the filter screen 8 is set to The filter residue is stored and filtered to avoid the suction of impurities into the drain pipe 2. A card plate 19 is inserted on the surface of the flange 4. A rubber pad 17 is fixedly connected to the surface of the card plate 19. The rubber pad 17 is clamped between the flange 4 and the flange cover 5. The flange 4 and the flange cover 5 are screwed with bolts 6. By arranging a detachable filter screen 8 between the water inlet pipe 3 and the flange 4, impurities can be collected and processed in a centralized manner to avoid impurities entering the drain pipe 2 and causing blockage. After accumulating for a period of time, the flange 4 can be disassembled, and the filter screen 8 can be taken out for cleaning and replacement. The detachable card plate 19 and the rubber pad 17 are arranged to improve the accuracy and convenience of the installation of the rubber pad 17 and avoid the poor sealing between the flange 4 and the flange cover 5.

[0024] Embodiment 2

[0025] See also Figure 3 On the basis of Example 1, in order to realize the connection and disassembly between the water inlet pipe 3 and the filter screen 8, the fixing plate 9 is an annular plate structure with a cross-section of "L", and the inner surface of the fixing plate 9 is provided with an internal thread, which is screwed with the external thread provided on the bottom surface of the water inlet pipe 3. The surface of the fixing plate 9 is provided with a plurality of array-distributed rotating grooves 10, and the rotating grooves 10 are spherical grooves. The surface of the rotating grooves 10 is rotatably connected with a rotating bead 11, and one end of the rotating bead 11 is fixedly connected with a knocking rod 12, which consists of a long tube and a sphere. The surface of the filter screen 8 away from the fixing plate 9 is fixedly connected with a limiting plate 14, and the limiting plate 14 is an annular plate structure. The limiting plate 14 is embedded in the limiting groove 15 provided on the surface of the flange 4, and the limiting groove 15 is an annular groove.

[0026] The fixing plate 9 and the water inlet pipe 3 are connected by threads, which facilitates the disassembly, cleaning and replacement of the fixing plate 9 and the filter screen 8. A rotating groove 10 and a rotating ball 11 are set. Due to the inconsistent flow rate of the water flow, the knocking rod 12 is repeatedly impacted, which can drive the knocking rod 12 to rotate and swing, vibrate and beat the surface of the filter screen 8, and reduce the adhesion of impurities on the side wall of the filter screen 8. The limit plate 14 is clamped in the limit groove 15. When the flange 4 and the flange cover 5 are fixed, the flange cover 5 has a clamping effect on the limit plate 14, and the limit plate 14 fixes and limits the filter screen 8.

[0027] Embodiment 3

[0028] See also Figures 4 to 5 On the basis of the second embodiment, in order to achieve the fixation between the flange 4 and the flange cover 5, a rubber groove 16 is provided on the surface of the flange 4, and the rubber groove 16 is an annular groove. Two array-distributed plug blocks 18 are fixedly connected to the surface of the rubber groove 16. The plug block 18 is an arc-shaped plate structure with a cross-section of "T". The card plate 19 is an annular plate structure. A slide groove 20 is provided on the surface of the card plate 19. The slide groove 20 is an annular groove with a cross-section of "convex". Slots 13 are provided on both sides of the surface of the card plate 19. The slots 13 are connected with the slide groove 20. The plug block 18 passes through the slot 13 and slides to the surface of the slide groove 20 to limit the card plate 19. The surfaces of the flange 4 and the flange cover 5 are provided with a plurality of screw holes 7 distributed in an annular array. The bolts 6 pass through the screw holes 7 to screw the flange 4 and the flange cover 5.

[0029] The card plate 19 is set to a "T" shape. The card plate 19 just passes through the slot 13 and is rotated and limited in the slide groove 20, so as to limit and fix the rubber pad 17 on the surface of the card plate 19. The rubber pad 17 is clamped between the flange 4 and the flange cover 5 to improve the sealing between the flange 4 and the flange cover 5.

[0030] In actual use, first, the fixing plate 9 and the water inlet pipe 3 are connected and fixed by threads, the limiting plate 14 is overlapped on the surface of the limiting groove 15, and then the flange cover 5 is overlapped on the surface of the flange 4, and the bolts 6 are used to pass through the screw holes 7 on the surface of the flange 4 and the flange cover 5 in turn, and are screwed and fixed with nuts. At this time, the rubber pad 17 is clamped between the flange 4 and the flange cover 5, and then the control switch is turned on, and the condensed water flows from the water inlet pipe 3 into the filter screen 8, and then the filter screen 8 filters and intercepts impurities. The filtered condensed water flows to the outside of the filter screen 8 and is discharged through the drain pipe 2. The flange 4 and the flange cover 5 can be separated, the fixing plate 9 is screwed to remove the filter screen 8 for cleaning or replacement, and the clamping plate 19 is rotated to remove and replace the rubber pad 17 that has been used for a long time or deformed.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A condensate drain device for a natural gas boiler, comprising a water-slag separation cylinder (1), the bottom end of which is fixedly connected to a flange (4), and a drain pipe (2) passing through the surface of the water-slag separation cylinder (1), characterized in that: The upper inner surface of the water-slag separation cylinder (1) is fixedly connected to a water inlet pipe (3), the lower end of the water inlet pipe (3) is screwed to a fixing plate (9), the surface of the fixing plate (9) is rotatably connected to a knocking rod (12), the surface of the fixing plate (9) is fixedly connected to a filter screen (8), the surface of the flange (4) is plugged with a clamping plate (19), the surface of the clamping plate (19) is fixedly connected to a rubber pad (17), the rubber pad (17) is clamped between the flange (4) and the flange cover (5), and the flange (4) and the flange cover (5) are screwed to bolts (6).

2. A natural gas boiler condensate drain device according to claim 1, characterized in that: The fixing plate (9) is an annular plate structure with an "L" cross section. The inner surface of the fixing plate (9) is provided with an internal thread, which is threadedly connected to an external thread provided on the bottom surface of the water inlet pipe (3).

3. A natural gas boiler condensate drain device according to claim 1, characterized in that: The surface of the fixed plate (9) is provided with a plurality of rotating grooves (10) distributed in an array, the rotating grooves (10) are spherical grooves, the surface of the rotating grooves (10) is rotatably connected with a rotating ball (11), one end of the rotating ball (11) is fixedly connected with a knocking rod (12), and the knocking rod (12) is composed of a long tube and a spherical ball.

4. A natural gas boiler condensate drain device according to claim 1, characterized in that: The filter screen (8) is fixedly connected to a limiting plate (14) on one end surface away from the fixing plate (9); the limiting plate (14) is an annular plate structure; the limiting plate (14) is embedded in a limiting groove (15) provided on the surface of the flange (4); the limiting groove (15) is an annular groove.

5. The natural gas boiler condensate drain device according to claim 1, characterized in that: The surface of the flange (4) is provided with a rubber groove (16), which is an annular groove. Two array-distributed plug blocks (18) are fixedly connected to the surface of the rubber groove (16), and the plug blocks (18) are in the form of an arc-shaped plate structure with a "T" cross section.

6. A natural gas boiler condensate drain device according to claim 1, characterized in that: The card plate (19) is in the form of an annular plate structure. A slide groove (20) is provided on the surface of the card plate (19). The slide groove (20) is in the form of an annular groove with a "convex" cross section. Slots (13) are provided on both sides of the surface of the card plate (19). The slots (13) are connected to the slide groove (20). The insert block (18) passes through the slots (13) and slides to the surface of the slide groove (20) to limit the card plate (19).

7. The natural gas boiler condensate drain device according to claim 1, characterized in that: The surfaces of the flange (4) and the flange cover (5) are provided with a plurality of screw holes (7) distributed in a circular array, and bolts (6) pass through the screw holes (7) to screw the flange (4) and the flange cover (5).

Images