Boiler sewage waste heat flash evaporation recovery device

Abstract

The utility model relates to the technical field of boiler sewage waste heat recovery, and discloses a boiler sewage waste heat flash recovery device which comprises a flash tank, a water inlet pipe arranged at the input end of the flash tank, a pressure gauge arranged at the top of the water inlet pipe, a steam outlet and a connecting pipe arranged at the top of the flash tank. The connecting pipe is arranged at the top of the flash tank, and the mixing box and the water pump are arranged at the input end of the connecting pipe, so that when the water pump is connected with an external water pipe, the water pump injects water into the flash tank from the connecting pipe after passing through the mixing box, the interior of the flash tank is flushed, and then flushing water can be discharged from the water outlet in the bottom; and meanwhile, cleaning liquid can be added into the mixing box to be matched with flushing water for cleaning, the effect that the flash tank is conveniently mixed with the cleaning liquid to be cleaned is achieved, manpower is saved, and operation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler sewage waste heat recovery, in particular to a boiler sewage waste heat flash evaporation recovery device. Background Art

[0002] A boiler wastewater flash evaporation waste heat recovery device collects wastewater generated by the boiler and uses flash evaporation technology to quickly convert some of the wastewater into steam while reducing the pressure, effectively recovering the waste heat. This process can then use the generated steam to drive turbines for power generation or heating, achieving energy recycling and improving the energy efficiency and economic efficiency of the entire system.

[0003] Existing boiler sewage waste heat flash evaporation recovery devices are usually equipped with a flash tank, which uses flash evaporation technology to flash evaporate sewage into the tank. When cleaning the inside of the flash tank, it is usually necessary to use a pipe to connect an external water pump, then use the pipe to connect the water pump to the flash tank, and then inject cleaning water for cleaning. The operation steps are relatively cumbersome. At the same time, in order to improve the cleaning effect of the cleaning water, it is usually necessary to add common industrial detergents and mix them with the cleaning water in advance. Pre-mixing is time-consuming and labor-intensive, which makes the cleaning operation of the flash tank more cumbersome and inconvenient. For this reason, we propose a boiler sewage waste heat flash evaporation recovery device. Utility Model Content

[0004] The purpose of the utility model is to provide a boiler sewage waste heat flash evaporation recovery device to solve the problem of complicated and inconvenient cleaning operation of the flash tank proposed in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a boiler sewage waste heat flash recovery device, comprising a flash tank, a water inlet pipe is provided at the input end of the flash tank, a pressure gauge is provided on the top of the water inlet pipe, a steam outlet and a connecting pipe are provided on the top of the flash tank, a ball valve is provided on the top of the connecting pipe, a support frame 1 is provided on the outside of the connecting pipe, a mixing box is provided at the input end of the connecting pipe, a water pump is provided at the input end of the mixing box, a support frame 2 is provided on the side wall of the water pump, and a diagonal brace is fixed to the bottom of the water pump.

[0006] Preferably, a fixing ring is provided on the top of the mixing box, and a bearing is provided inside the fixing ring.

[0007] Preferably, a rotating shaft is provided inside the bearing, and the rotating shaft is fitted into the interior of the mixing box.

[0008] Preferably, a plurality of stirring blades are fixedly connected to the outer circumferential wall of the rotating shaft, and the stirring blades are in a rectangular structure.

[0009] Preferably, a liquid adding pipe is fixedly connected to the side wall of the mixing box, and a liquid injection port is opened on the top of the liquid adding pipe.

[0010] Preferably, the liquid adding pipe side wall is provided with a telescopic column, a fixing member is fixed to the outside of the telescopic column, and a piston is arranged at the power output end of the telescopic column.

[0011] Preferably, the bottom of the flash tank is provided with a bottom frame, and the output end of the flash tank is provided with a drain port.

[0012] Compared with the prior art, the utility model has the beneficial effects that:

[0013] The utility model discloses a connecting pipe is arranged at the top of the flash tank, a mixing box and a water pump are arranged at the input end of the connecting pipe, when the water pump is connected with the external water pipe, the water pump injects the water into the flash tank through the mixing box from the connecting pipe, the inside of the flash tank is flushed, and then the flushing water can be discharged from the drain port at the bottom, so that the inside of the flash tank can be conveniently flushed, the cleaning liquid can be added in the mixing box to cooperate with the flushing water to clean, the cleaning liquid mixed with the flash tank is cleaned conveniently, the mixing of the cleaning liquid in advance is not needed, manpower is saved, and the operation is simple and convenient.

[0014] When the cleaning liquid is added in the mixing box, the cleaning liquid can be injected into the liquid adding pipe through the liquid injection port, the telescopic column is stretched to make the piston push the cleaning liquid into the inside of the mixing box, the stirring blade can be pushed to rotate in the mixing box with the rotation shaft when the flushing water flows from left to right, the cleaning liquid can be mixed with the water in the mixing box with the stirring blade at this moment, the cleaning liquid can be mixed with the flushing water more fully by the rotation of the stirring blade, and the flushing effect of the inside of the flash tank is improved, and the uneven mixing of the cleaning liquid and the flushing water is avoided. BRIEF DESCRIPTION OF DRAWINGS

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

[0016] Figure 2 It is the inside structure schematic diagram of the liquid adding pipe of the utility model;

[0017] Figure 3 It is the inside structure schematic diagram of the mixing box of the utility model;

[0018] Figure 4 It is the Figure 1 It is the enlarged schematic diagram of A position of the utility model.

[0019] In the figure: 100, flash tank; 101, steam exhaust port; 102, drain port; 103, base frame; 110, water inlet pipe; 111, pressure gauge; 120, connecting pipe; 121, ball valve; 130, support frame 1; 140, mixing box; 141, fixing ring; 142, bearing; 143, rotating shaft; 144, stirring blade; 150, support frame 2; 151, water pump; 152, diagonal support; 160, liquid adding pipe; 161, liquid filling port; 170, telescopic column; 171, fixing piece; 172, piston. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example:

[0022] See also Figures 1-4 The figure shows a flash evaporation recovery device for waste heat from boiler sewage, comprising a flash tank 100. The input end of the flash tank 100 is tightly welded with an inlet pipe 110. A pressure gauge 111 is provided on the top of the inlet pipe 110. The pressure gauge 111 uses a common digital pressure test gauge on the market and can be used to measure the pressure of the sewage. A steam outlet 101 and a connecting pipe 120 are provided on the top of the flash tank 100. A ball valve 121 is provided on the top of the connecting pipe 120. When performing waste heat flash evaporation recovery, the ball valve 121 needs to be closed, and the hot steam can be discharged from the steam outlet 101. 1 discharge, the outside of the connecting pipe 120 is fixedly connected to the support frame 130 by bolts, the input end of the connecting pipe 120 is provided with a mixing box 140, and the input end of the mixing box 140 is provided with a water pump 151. The water pump 151 uses a common model on the market. After the water pump 151 is connected to an external water source through a common pipeline, it can directly fill the flash tank 100 with water for cleaning. The cleaning water can be discharged from the drain port 102 at the bottom. The side wall of the water pump 151 is fixedly connected to the support frame 2 150 by bolts, and the bottom of the water pump 151 is fixedly connected to a diagonal brace 152 by bolts.

[0023] Specifically, a fixing ring 141 is tightly welded to the top of the mixing box 140 , and a bearing 142 is provided inside the fixing ring 141 .

[0024] Furthermore, a rotating shaft 143 is provided inside the bearing 142 , and the rotating shaft 143 is fitted into the interior of the mixing box 140 .

[0025] Furthermore, a plurality of stirring blades 144 are tightly welded to the outer wall of the rotating shaft 143 . The stirring blades 144 are rectangular in structure. The rotating shaft 143 and the stirring blades 144 are made of stainless steel commonly available on the market.

[0026] Furthermore, a liquid adding pipe 160 is fixed to the side wall of the mixing box 140 by bolts. A liquid injection port 161 is provided on the top of the liquid adding pipe 160. Common industrial detergents on the market can be added to the liquid adding pipe 160 through the liquid injection port 161 for use as cleaning liquid.

[0027] It is worth noting that a telescopic column 170 is provided on the side wall of the liquid adding tube 160. The telescopic column 170 uses a common electric push rod on the market. The outside of the telescopic column 170 is fixed with a fixing part 171 that cooperates with the support frame 150. The power output end of the telescopic column 170 is provided with a piston 172 that slides inside the liquid adding tube 160. When the piston 172 adds the cleaning liquid from the liquid adding tube 160 to the interior of the mixing box 140, the liquid adding tube 160 can be closed.

[0028] It is worth noting that a base frame 103 is fixed to the bottom of the flash tank 100 by bolts, and a drain outlet 102 is provided at the output end of the flash tank 100 .

[0029] In addition, the electrical components and electrical equipment mentioned above all use external power supplies. The circuits, electronic components and modules involved in this utility model are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to internal structures and methods.

[0030] Working principle: A connecting pipe 120 is provided on the top of the flash tank 100, and a mixing box 140 and a water pump 151 are provided at the input end of the connecting pipe 120. When the water pump 151 is connected to an external water pipe, the water pump 151 injects water into the flash tank 100 from the connecting pipe 120 after passing through the mixing box 140, and the inside of the flash tank 100 is flushed. Then the flushing water can be discharged from the drain port 102 at the bottom, so that the inside of the flash tank 100 can be flushed conveniently. At the same time, cleaning liquid can be added to the mixing box 140 to clean it together with the flushing water, so that the flash tank 100 can be conveniently cleaned after mixing with the cleaning liquid. There is no need to mix the cleaning liquid in advance, and it is energy-saving. It saves manpower and is simple and convenient to operate. When the cleaning liquid is added to the mixing box 140, the cleaning liquid can be injected into the liquid adding tube 160 through the liquid injection port 161, and then the telescopic column 170 is extended to allow the piston 172 to push the cleaning liquid into the mixing box 140. At the same time, when the flushing water flows from left to right, the stirring blade 144 can be pushed to cooperate with the rotating shaft 143 to rotate inside the mixing box 140. At this time, the cleaning liquid can cooperate with the stirring blade 144 to mix with the water inside the mixing box 140, so that the rotation of the stirring blade 144 can make the cleaning liquid and the flushing water mix more fully, thereby improving the flushing effect of the inside of the flash tank 100 and avoiding the uneven mixing of the cleaning liquid and the flushing water.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A boiler wastewater waste heat flash recovery device, comprising a flash tank (100), characterized in that: The input end of the flash tank (100) is provided with a water inlet pipe (110), the top of the water inlet pipe (110) is provided with a pressure gauge (111), the top of the flash tank (100) is provided with a steam outlet (101) and a connecting pipe (120), the top of the connecting pipe (120) is provided with a ball valve (121), the outside of the connecting pipe (120) is provided with a first support frame (130), the input end of the connecting pipe (120) is provided with a mixing box (140), the input end of the mixing box (140) is provided with a water pump (151), the side wall of the water pump (151) is provided with a second support frame (150), and the bottom of the water pump (151) is fixedly connected with a diagonal brace (152).

2. A boiler wastewater waste heat flash evaporation recovery device according to claim 1, characterized in that: A fixing ring (141) is provided on the top of the mixing box (140), and a bearing (142) is provided inside the fixing ring (141).

3. A boiler wastewater waste heat flash recovery device according to claim 2, characterized in that: A rotating shaft (143) is provided inside the bearing (142), and the rotating shaft (143) is fitted into the interior of the mixing box (140).

4. A boiler wastewater waste heat flash evaporation recovery device according to claim 3, characterized in that: A plurality of stirring blades (144) are fixedly connected to the circumferential outer wall of the rotating shaft (143), and the stirring blades (144) are in a rectangular structure.

5. The boiler wastewater waste heat flash evaporation recovery device according to claim 1, characterized in that: A liquid adding pipe (160) is fixedly connected to the side wall of the mixing box (140), and a liquid injection port (161) is provided at the top of the liquid adding pipe (160).

6. The boiler wastewater waste heat flash evaporation recovery device according to claim 5, characterized in that: A telescopic column (170) is provided on the side wall of the liquid adding pipe (160), a fixing member (171) matched with the second support frame (150) is fixedly connected to the outside of the telescopic column (170), and a piston (172) is provided at the power output end of the telescopic column (170).

7. The boiler wastewater waste heat flash evaporation recovery device according to claim 1, characterized in that: A bottom frame (103) is provided at the bottom of the flash tank (100), and a drain outlet (102) is provided at the output end of the flash tank (100).

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