Backwater ejector of double-drum boiler

Abstract

The utility model discloses a return water ejector of a double-drum boiler, which relates to the technical field of boilers, and comprises a downcomer and a header, one end of the downcomer is connected with a Y-shaped three-way pipe, one end of the Y-shaped three-way pipe is fixed with an outer shell, one side surface of the outer shell is provided with a conical hole, a sliding rod is in sliding fit in the outer shell, and one end of the sliding rod is fixed with a conical body. A sliding rod is fixed to one end of the down pipe, a connecting rod is fixed to the other end of the sliding rod, a bottom plate is fixed to one end of the connecting rod, an adapter plate is fixed to one end of the bottom plate, a sliding groove is formed in one side face of the adapter plate, an L-shaped rod is arranged in the sliding groove in a sliding fit mode, and a pressing plate is fixed to the top of the L-shaped rod. The adapter plate drives the sliding rod to move through the bottom plate, so that the conical body is separated from the conical hole, water flow in the downcomer flows out of the conical hole through the water through hole and enters the collecting box, circulation of the water in the collecting box is promoted, the water flow is more efficiently distributed by the collecting box, and the heating efficiency of the water in the boiler barrel is promoted.

Description

Technical Field

[0001] The utility model belongs to the technical field of boilers, in particular to a return water ejector for a double-drum boiler. Background Art

[0002] A boiler is a device that uses fuel combustion to generate heat energy, heats water to a certain temperature and generates steam. Common types include single-drum boilers and double-drum boilers. Compared with single-drum boilers, double-drum boilers are more stable in operation, have larger capacity, and are relatively more evenly water-cooled. The working process of a double-drum boiler is usually to inject water into the double drums, and add fuel to the furnace cavity for combustion. The water-cooling pipes on the water-cooled wall absorb the heat generated by the combustion, and then the water-cooling pipes transfer the heat to the two drums. The steam generated by the boiling water in the drum is used for industrial production.

[0003] During the operation of the double-drum boiler, the header plays the role of mixing water and evenly distributing it to each water-cooling tube. Therefore, the water flow in the header of the existing double-drum boiler may flow slowly during circulation, resulting in a decrease in the efficiency of the water flow distributed by the header, thereby reducing the heating efficiency of the water in the double drum. Utility Model Content

[0004] The utility model aims to provide a double-drum boiler return water ejector, which solves the problem of slow water flow in the header of the existing double-drum boiler and low efficiency of water flow distribution in the header, thereby affecting the heating efficiency of the water in the double drum, through the arrangement of an ejector assembly and a pipe connection assembly.

[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0006] The utility model discloses a double-drum boiler return water ejector, comprising a downcomer and a header, one end of the downcomer is threadedly connected with a Y-shaped tee pipe, and one end of the Y-shaped tee pipe is provided with an ejector assembly.

[0007] The ejection assembly includes an outer shell fixedly connected to the two outlets of the Y-shaped three-way pipe, a sliding rod is slidably fitted inside the outer shell, a cone is fixed to one end of the sliding rod, a connecting rod is fixed to the other end of the sliding rod, a bottom plate is fixed to the end of the connecting rod away from the sliding rod, an adapter plate is fixed to the end of the bottom plate close to the connecting rod, and a spring is fixed to the other end of the bottom plate.

[0008] A sliding groove is provided on one side of the adapter plate, an L-shaped rod is slidably fitted inside the sliding groove, and a pressing plate is fixed on the top of the L-shaped rod.

[0009] The utility model is further configured that a conical hole is opened on one side of the outer shell, a sliding hole is opened on the inner wall of the conical hole, a square hole is opened on the inner wall of the sliding hole, and a vent hole is opened on the inner wall of the square hole.

[0010] A water hole is formed on the outer top of the shell body, the water hole is connected with the tapered hole, a movable hole is formed on the top of the shell body, the movable hole is connected with the square hole, and the water hole and the top of the movable hole are respectively connected with two outlets of the Y-shaped three-way pipe.

[0011] The utility model is further configured as follows: a sealing groove 1 is provided on the inner wall of the sliding hole, a sealing ring 1 is snap-fitted in the sealing groove 1, a sealing groove 2 is provided on the peripheral side of the pressure plate, a sealing ring 2 is snap-fitted in the sealing groove 2, and two symmetrical ventilation grooves are provided through one side of the bottom plate.

[0012] The utility model is further configured that a hollow cylinder is fixed on one side of the outer shell, and a pipe connection assembly is arranged on one side of the hollow cylinder.

[0013] The pipe connection assembly comprises an ejection connector fixedly connected to the peripheral side of the hollow cylinder, one end of the ejection connector is snap-fitted with a pipe connector, and one end of the pipe connector is fixedly connected to one end of the header.

[0014] The utility model is further configured such that a snap-in hole is provided inside the ejection connecting piece, a conical cavity is provided at the bottom of the snap-in hole, an annular groove is fixed at the bottom of the snap-in hole, and a plurality of L-shaped snap-in plates are fixed on the inner wall of the snap-in hole in a circular array.

[0015] The utility model is further configured such that a second clamping hole is provided inside the pipe connector, a through hole is provided through the bottom of the second clamping hole, the through hole is connected to the collecting box, a second annular groove is fixed to the bottom of the second clamping hole, a plurality of L-shaped clamping grooves are provided on the inner wall of the second clamping hole in a circular array, and the L-shaped clamping plate is clamped and matched with the L-shaped clamping groove.

[0016] The utility model is further configured that a sealing ring three is clamped between the annular groove one and the annular groove two.

[0017] The utility model has the following beneficial effects:

[0018] 1. The utility model utilizes the water pressure in the downcomer to control the cone to gradually separate from the conical hole, so that the water in the downcomer flows out of the conical hole through the water hole and enters the header, thereby promoting the circulation of water in the header, making the header distribute the water more efficiently, so as to promote the heating efficiency of the water in the boiler drum.

[0019] 2. The utility model connects the ejector assembly and the manifold by setting a pipe connection assembly, so as to facilitate the removal of the ejector assembly from one end of the manifold, so that the equipment can detect the water flow state of the ejector assembly before working, so as to avoid impurities in the water body being deposited in the ejector assembly and causing blockage.

[0020] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0022] Figure 1 The schematic diagram is a structural diagram of a return water ejector for a double-drum boiler.

[0023] Figure 2 A cross-sectional view of the ejection assembly.

[0024] Figure 3 A cross-sectional view of the outer shell.

[0025] Figure 4 This is an exploded view of the ejector assembly.

[0026] Figure 5 A cross-sectional view of a pipe connection assembly.

[0027] Figure 6 It is a cross-sectional view of the ejection connector.

[0028] Figure 7 A cross-sectional view of a pipe connector.

[0029] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0030] 1. Downcomer; 2. Header; 3. Y-shaped tee; 4. Ejector assembly; 401. Outer shell; 402. Slide rod; 403. Cone; 404. Connecting rod; 405. Bottom plate; 406. Adapter plate; 407. Spring; 408. Slide groove; 409. L-shaped rod; 410. Press plate; 411. Cone hole; 412. Slide hole; 413. Square hole; 414. Ventilation hole; 415. Water hole; 416. Movable hole; 417. Seal Groove one; 418, sealing ring one; 419, sealing groove two; 420, sealing ring two; 421, ventilation groove; 422, hollow cylinder; 5, pipe connection assembly; 501, ejector connector; 502, pipe connector; 503, snap-in hole one; 504, conical cavity; 505, annular groove one; 506, L-shaped snap-in plate; 507, snap-in hole two; 508, through hole; 509, annular groove two; 510, L-shaped slot; 511, sealing ring three. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on 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. Specific embodiment 1

[0033] See also Figure 1-7 The utility model is a double-drum boiler return water ejector, comprising a downcomer 1 and a header 2, one end of the downcomer 1 is threadedly connected with a Y-shaped tee pipe 3, one end of the Y-shaped tee pipe 3 is provided with an ejector assembly 4, the ejector assembly 4 comprises an outer shell 401, a slide rod 402 is slidably matched inside the outer shell 401, a cone 403 is fixed at one end of the slide rod 402, a connecting rod 404 is fixed at the other end of the slide rod 402, a bottom plate 405 is fixed at one end of the connecting rod 404 away from the slide rod 402, an adapter plate 406 is fixed at one end of the bottom plate 405 close to the connecting rod 404, a spring 407 is fixed at the other end of the bottom plate 405, a sliding groove 408 is provided on one side of the adapter plate 406, an L-shaped rod 409 is slidably matched inside the sliding groove 408, and a pressing plate 410 is fixed at the top of the L-shaped rod 409;

[0034] Specifically, a tapered hole 411 is provided on one side of the outer shell 401, a sliding hole 412 is provided on the inner wall of the tapered hole 411, a square hole 413 is provided on the inner wall of the sliding hole 412, a vent hole 414 is provided on the inner wall of the square hole 413, a water hole 415 is provided on the top of the outer shell 401, the water hole 415 is connected with the tapered hole 411, a movable hole 416 is provided on the top of the outer shell 401, the movable hole 416 is connected with the square hole 413, the tops of the water hole 415 and the movable hole 416 are respectively connected with the two outlets of the Y-shaped three-way pipe 3, a sealing groove 417 is provided on the inner wall of the sliding hole 412, a sealing ring 418 is snap-fitted in the sealing groove 417, a sealing groove 419 is provided on the side of the pressure plate 410, a sealing ring 420 is snap-fitted in the sealing groove 419, and two symmetrical vent grooves 421 are provided on one side of the bottom plate 405.

[0035] A specific application of this embodiment is: during the use of the equipment, the water pressure at the bottom of the down pipe 1 pushes the pressure plate 410 downward, so that the L-shaped rod 409 fixedly connected to the bottom of the pressure plate 410 slides in the slide groove 408 on one side of the adapter plate 406, and at the same time the adapter plate 406 moves to one side, and the bottom plate 405 fixed to the adapter plate 406 also moves to one side, the bottom plate 405 squeezes the spring 407 fixed to one end thereof, and the bottom plate 405 drives the slide bar 402 to slide in the slide hole 412 through the connecting rod 404 fixed to the other end thereof, and the slide bar 402 drives the cone 403 to gradually separate from the cone hole 411, at this time, the water flow in the down pipe 1 flows into the cone hole 411 through the water hole 415, and then flows out from one end of the cone hole 411, and the outflowing water flow at this time has a certain impact force, so as to facilitate the circulation of water flow in the header 2;

[0036] During the movement of the pressing plate 410, the air pressure in the ejection assembly 4 is balanced by the provision of the vent holes 414 and the vent grooves 421. Specific embodiment 2

[0038] See also Figure 1-7On the basis of the specific embodiment 1, a hollow cylinder 422 is fixed on one side of the specific outer shell 401, and a pipe connection assembly 5 is provided on one side of the hollow cylinder 422. The pipe connection assembly 5 includes an ejection connector 501 fixedly connected to the side surface of the hollow cylinder 422, and one end of the ejection connector 501 is snap-fitted with a pipe connector 502, and one end of the pipe connector 502 is fixedly connected to one end of the header 2. A snap-fit ​​hole 503 is provided inside the ejection connector 501, and a conical cavity 504 is provided at the bottom of the snap-fit ​​hole 503, and an annular groove 504 is fixed at the bottom of the snap-fit ​​hole 503. 505, a plurality of L-shaped clamping plates 506 are fixed on the inner wall of the clamping hole 1 503 in a circular array, a clamping hole 2 507 is provided inside the pipe connector 502, a through hole 508 is provided through the bottom of the clamping hole 2 507, the through hole 508 is connected with the collecting box 2, an annular groove 2 509 is fixed on the bottom of the clamping hole 2 507, a plurality of L-shaped clamping grooves 510 are provided on the inner wall of the clamping hole 2 507 in a circular array, the L-shaped clamping plates 506 are clamped with the L-shaped clamping grooves 510, and a sealing ring 3 511 is clamped between the annular groove 1 505 and the annular groove 2 509.

[0039] A specific application of this embodiment is: first, insert the sealing ring three 511 into the annular groove one 505 or the annular groove two 509, and then align each L-shaped clamping plate 506 with the corresponding L-shaped clamping groove 510 and insert it. At this time, the ejection connector 501 and the pipe connector 502 are closed, and the two ends of the sealing ring three 511 are also respectively clamped into the annular groove one 505 and the annular groove two 509, so that the sealing ring three 511 has a sealing effect, and then the ejection connector 501 is rotated clockwise to make the L-shaped clamping plate 506 completely clamped into the L-shaped clamping groove 510, so that the ejection connector 501 and the pipe connector 502 are fixedly connected. At the same time, when it is necessary to detect the circulation effect of the ejection component 4, the ejection connector 501 is rotated counterclockwise to separate the ejection connector 501 from the pipe connector 502.

[0040] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. 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 utility model. In this specification, the schematic representation 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.

[0041] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A double-drum boiler return water ejector, comprising a downcomer (1) and a header (2), wherein one end of the downcomer (1) is threadedly connected to a Y-shaped tee (3); characterized in that: An ejector assembly (4) is provided at one end of the Y-shaped three-way pipe (3); The ejection assembly (4) comprises an outer shell (401), a slide rod (402) is slidably fitted inside the outer shell (401), a cone (403) is fixed to one end of the slide rod (402), a connecting rod (404) is fixed to the other end of the slide rod (402), a bottom plate (405) is fixed to the end of the connecting rod (404) away from the slide rod (402), an adapter plate (406) is fixed to the end of the bottom plate (405) close to the connecting rod (404), and a spring (407) is fixed to the other end of the bottom plate (405); A sliding groove (408) is provided on one side of the adapter plate (406), an L-shaped rod (409) is slidably fitted inside the sliding groove (408), and a pressing plate (410) is fixed on the top of the L-shaped rod (409).

2. A double-drum boiler return water ejector according to claim 1, characterized in that: A conical hole (411) is provided on one side of the outer shell (401), a sliding hole (412) is provided on the inner wall of the conical hole (411), a square hole (413) is provided on the inner wall of the sliding hole (412), and a vent hole (414) is provided on the inner wall of the square hole (413); A water hole (415) is formed through the top of the outer shell (401), and the water hole (415) is connected to the tapered hole (411). A movable hole (416) is formed on the top of the outer shell (401), and the movable hole (416) is connected to the square hole (413). The tops of the water hole (415) and the movable hole (416) are respectively connected to the two outlets of the Y-shaped three-way pipe (3).

3. A double-drum boiler return water ejector according to claim 2, characterized in that: The inner wall of the sliding hole (412) is provided with a sealing groove (417), and a sealing ring (418) is snap-fitted in the sealing groove (417). The side surface of the pressure plate (410) is provided with a sealing groove (419), and a sealing ring (420) is snap-fitted in the sealing groove (419). Two symmetrical ventilation grooves (421) are formed through one side of the bottom plate (405).

4. A double-drum boiler return water ejector according to claim 3, characterized in that: A hollow cylinder (422) is fixed to one side of the outer shell (401), and a pipe connection assembly (5) is provided on one side of the hollow cylinder (422); The pipe connection assembly (5) comprises an ejector connector (501) fixedly connected to the peripheral side of the hollow cylinder (422), one end of the ejector connector (501) being snap-fitted with a pipe connector (502), and one end of the pipe connector (502) being fixedly connected to one end of the header (2).

5. A double-drum boiler return water ejector according to claim 4, characterized in that: The ejection connector (501) is provided with a first clamping hole (503) inside, a conical cavity (504) is provided at the bottom of the first clamping hole (503), an annular groove (505) is fixed at the bottom of the first clamping hole (503), and a plurality of L-shaped clamping plates (506) are fixed in a circular array on the inner wall of the first clamping hole (503).

6. A double-drum boiler return water ejector according to claim 5, characterized in that: The pipe connector (502) is provided with a second snap-in hole (507) inside, a through hole (508) is provided through the bottom of the second snap-in hole (507), the through hole (508) is connected with the header (2), a second annular groove (509) is fixed to the bottom of the second snap-in hole (507), a plurality of L-shaped snap-in grooves (510) are provided on the inner wall of the second snap-in hole (507) in a circular array, and the L-shaped snap-in plate (506) is snap-fitted with the L-shaped snap-in grooves (510).

7. A double-drum boiler return water ejector according to claim 6, characterized in that: A sealing ring 3 (511) is clamped between the annular groove 1 (505) and the annular groove 2 (509).

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