A boiler condensate recovery apparatus

Abstract

This utility model relates to the field of condensate recovery technology and discloses a boiler condensate recovery device, including a first filter structure. The output end of the first filter structure is connected to the input end of a heat exchange structure, the output end of the heat exchange structure is connected to the input end of a second filter structure, and the output end of the second filter structure is connected to a gas-liquid separation structure. This utility model, through the coordinated operation of the first filter structure, the second filter structure, and the gas-liquid separation structure, can separate rust, oil, and air from the condensate, avoiding boiler corrosion. Simultaneously, the first filter structure, while rotating to trap large rust particles, instantly converts the filter channel into a high-pressure flushing circuit through a 180° positional reversal, thoroughly removing accumulated impurities without stopping the machine. This ensures the continuity of condensate flow and fundamentally solves the efficiency reduction problem caused by clogging in traditional filters, significantly reducing maintenance costs and extending equipment life.

Description

Technical Field

[0001] This utility model relates to the field of condensate recovery technology, specifically a boiler condensate recovery device. Background Technology

[0002] Condensate recovery refers to the process of collecting, treating, and reusing condensate generated in industrial production or heating systems. Condensate mainly comes from the high-temperature liquid water formed by the cooling of steam after heating, heat exchange, or work.

[0003] In boiler operation, condensate is an ideal makeup water source, and direct reuse can significantly reduce energy consumption and water treatment costs. However, existing condensate recycling processes can introduce rust, oil, and air, leading to boiler corrosion and reduced efficiency. At the same time, the waste heat of high-temperature condensate is not effectively utilized, resulting in energy waste. These problems not only offset the value of condensate reuse but may also increase the system maintenance burden, and urgently need to be addressed by optimizing the recycling process. Utility Model Content

[0004] The purpose of this utility model is to provide a boiler condensate recovery device to solve the problem that existing condensate recovery processes may introduce rust, oil, and air, leading to boiler corrosion and reduced efficiency.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to a boiler condensate recovery device, comprising a first filter structure, the output end of which is connected to the input end of a heat exchange structure, the output end of which is connected to the input end of a second filter structure, and the output end of which is connected to a gas-liquid separation structure. The first filter structure includes a first outer shell, the circumferential sidewall of which is connected to a first inlet pipe and a first outlet pipe, one end of which is connected to a first U-shaped pipe; a second outer shell, which is connected to one end of the first outer shell and connected to a waste liquid pipe; a turntable, which is rotatably installed between the first and second outer shells, and the turntable has several through holes on its outer side; a first cylinder, which is fixed to the end face of the turntable facing the first outer shell, and the outer side of the first cylinder is provided with a connecting shaft, one end of which penetrates the first outer shell and extends outward; the circumferential side of the first cylinder is connected to a pipe; and a second cylinder, which is fixed to the end face of the turntable facing the second outer shell, and the circumferential side of the second cylinder is connected to several through holes.

[0007] Furthermore, the bottom of both the first and second outer shells are fixedly equipped with first support legs.

[0008] Furthermore, a support base is fixedly installed on the outer side of the first housing, and a motor is installed on the support base. The output end of the motor is installed with a connecting shaft via a coupling.

[0009] Furthermore, the heat exchange structure includes a tank body, one end of which is fitted with a cover. The circumferential side of the tank body is connected to a second inlet pipe, a second outlet pipe, a water inlet pipe, and a drain pipe. A baffle is horizontally fixed inside the tank body. One end of the baffle is provided with a partition plate. The partition plate is vertically fixed inside the tank body and divides it into a first chamber and a second chamber. A second U-shaped pipe is connected at both ends to the first chamber and the second chamber respectively and passes through the baffle.

[0010] Furthermore, the second inlet pipe is connected to the first chamber, the second outlet pipe is connected to the second chamber, and the second inlet pipe is connected to the first outlet pipe.

[0011] Furthermore, a second support leg is installed at the bottom of the tank.

[0012] This utility model has the following beneficial effects:

[0013] (1) This utility model can separate rust, oil and air in condensate by working together with the first filter structure, the second filter structure and the gas-liquid separation structure, thus avoiding boiler corrosion. At the same time, the first filter structure can instantly convert the filter channel into a high-pressure flushing circuit by rotating to intercept large rust impurities, and can completely remove accumulated impurities without stopping the machine. This not only ensures the continuity of condensate flow, but also fundamentally solves the problem of efficiency reduction caused by clogging of traditional filters, significantly reducing maintenance costs and extending equipment life.

[0014] (2) The high-temperature condensate filtered by this utility model is injected into the first chamber through the second liquid inlet pipe. When it flows through the second U-shaped tube, it releases sensible heat. At the same time, cold water flows into the tank from the water inlet pipe and fully contacts the high-temperature outer wall of the second U-shaped tube to absorb heat. The refrigerant after heating is output from the drain pipe for boiler makeup water. After the condensate has completed heat exchange, it enters the second chamber and is introduced into the next process through the second liquid outlet pipe. This process maximizes the heat transfer efficiency in the closed space and simultaneously realizes waste heat recovery and condensate cooling.

[0015] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the first filter structure;

[0019] Figure 3 This is an exploded view of the first filter structure;

[0020] Figure 4 This is a cross-sectional view of the first filter structure;

[0021] Figure 5 This is a cross-sectional view of the first filter structure during backwashing;

[0022] Figure 6 This is a schematic diagram of the heat exchange structure;

[0023] Figure 7 This is a cross-sectional view of the heat exchange structure;

[0024] The attached diagram lists the components represented by each number as follows:

[0025] In the diagram: 1. First filtration structure; 101. First outer shell; 102. First inlet pipe; 103. First outlet pipe; 104. First U-shaped pipe; 105. Second outer shell; 106. Waste liquid pipe; 107. Turntable; 108. First cylinder; 109. Connecting shaft; 1010. Second cylinder; 1011. First support leg; 1012. Support base; 1013. Motor; 1014. Pipe body; 2. Heat exchange structure; 201. Tank body; 202. Cover; 203. Second inlet pipe; 204. Second outlet pipe; 205. Water inlet pipe; 206. Drain pipe; 207. Baffle; 208. Divider plate; 209. First chamber; 2010. Second chamber; 2011. Second U-shaped pipe; 2012. Second support leg; 3. Second filtration structure; 4. Gas-liquid separation structure. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1-7As shown, this utility model is a boiler condensate recovery device, including a first filter structure 1. The output end of the first filter structure 1 is connected to the input end of a heat exchange structure 2, and the output end of the heat exchange structure 2 is connected to the input end of a second filter structure 3. The output end of the second filter structure 3 is connected to a gas-liquid separation structure 4. The first filter structure 1 includes a first outer shell 101, whose circumferential sidewalls are connected to a first inlet pipe 102 and a first outlet pipe 103. One end of the first inlet pipe 102 is connected to a first U-shaped pipe 104. A second outer shell 105 is connected to one end of the first outer shell 101 and is connected to a waste liquid pipe 106. A turntable 107 is rotatably mounted between the first outer shell 101 and the second outer shell 105. Several through holes are provided on the outer side of the turntable 107. A first cylindrical body 108 is fixed to the end face of the turntable 107 facing the first outer shell 101. A connecting shaft 109 is provided on the outer side of the first cylindrical body 108. One end of the connecting shaft 109 passes through the first outer shell 101 and extends outward. A tube 1014 is connected to the circumferential side of the first cylindrical body 108. A second cylindrical body 1010 is fixed to the end face of the turntable 107 facing the second outer shell 105. Several through holes are connected to the circumferential side of the second cylindrical body 1010.

[0028] Among them, the second filter structure 3 adopts the coalescing separator in the prior art, the gas-liquid separation structure 4 adopts the degassing tower in the prior art, and control valves are installed on both ends of the first U-shaped tube 104 and the first drain pipe 103.

[0029] Through the coordinated operation of the first filter structure 1, the second filter structure 3 and the gas-liquid separation structure 4, rust, oil and air in the condensate can be separated to avoid boiler corrosion.

[0030] The first support leg 1011 is fixedly installed at the bottom of both the first outer shell 101 and the second outer shell 105.

[0031] A support base 1012 is fixedly installed on the outer side of the first housing 101. A motor 1013 is installed on the support base 1012. The output end of the motor 1013 is installed with the connecting shaft 109 through a coupling.

[0032] Condensate enters the first inlet pipe 102 through the first U-shaped pipe 104 and flows into the first outer shell 101. At this time, the turntable 107 is fixed in the initial position, so that the pipe body 1014 is connected to the first drain pipe 103. Condensate enters the second outer shell 105 through the port of the turntable 107 and completes rust interception through the through hole of the second cylinder 1010. The purified liquid flows sequentially through the second cylinder 1010, the first cylinder 108 and the pipe body 1014, and is finally output from the first drain pipe 103. When excessive rust accumulates on the surface of the second cylinder 1010, the motor 1013 drives the connecting shaft 109 to rotate 180°, so that the pipe body 1014 switches to be connected to the first inlet pipe 102, and the cleaning liquid is injected in reverse. The liquid enters from the other end of the first U-shaped tube 104 through the first inlet pipe 102 and is flushed into the tube body 1014. It powerfully flushes the impurities in the first cylinder 108, the second cylinder 1010 and the through hole, and carries the rust residue into the second outer shell 105. Finally, the control valve of the waste liquid pipe 106 is opened to discharge the dirt. Through the first filter structure 1, large particles of rust impurities are intercepted by rotation, and the filter channel is instantly converted into a high-pressure flushing circuit by 180° position reversal. The accumulated impurities can be completely removed without stopping the machine. This not only ensures the continuity of condensate flow, but also fundamentally solves the problem of efficiency reduction caused by clogging in traditional filters, significantly reducing maintenance costs and extending equipment life.

[0033] The heat exchange structure 2 includes a tank body 201, a cover 202 installed at one end of the tank body 201, a second liquid inlet pipe 203, a second liquid outlet pipe 204, a water inlet pipe 205 and a drain pipe 206 connected to the periphery of the tank body 201, a baffle 207, which is horizontally fixed inside the tank body 201, a partition plate 208 provided at one end of the baffle 207, the partition plate 208 is longitudinally fixed inside the tank body 201 and divides it into a first chamber 209 and a second chamber 2010, and a second U-shaped pipe 2011, which is connected at both ends to the first chamber 209 and the second chamber 2010 respectively and passes through the baffle 207;

[0034] The second inlet pipe 203 is connected to the first chamber 209, the second outlet pipe 204 is connected to the second chamber 2010, and the second inlet pipe 203 is connected to the first outlet pipe 103.

[0035] A second support leg 2012 is installed at the bottom of the tank body 201;

[0036] The filtered high-temperature condensate is injected into the first chamber 209 through the second inlet pipe 203. When it flows through the second U-shaped tube 2011, it releases sensible heat. At the same time, cold water flows into the tank 201 in reverse from the inlet pipe 205 and fully contacts the high-temperature outer wall of the second U-shaped tube 2011 to absorb heat. The heated refrigerant is output from the drain pipe 206 for boiler makeup water. After the heat exchange is completed, the condensate enters the second chamber 2010 and is introduced into the next process through the second drain pipe 204. This process maximizes the heat transfer efficiency in the closed space and simultaneously realizes waste heat recovery and condensate cooling.

[0037] In use, high-temperature condensate enters the first filter structure 1 through the first U-shaped tube 104. Initially, the turntable 107 is positioned so that the tube 1014 is connected to the first drain pipe 103. The condensate passes through the opening of the turntable 107 and enters the second outer shell 105, where rust and impurities are trapped by the peripheral through-holes of the second cylinder 1010. The purified liquid flows through the first cylinder 108 and the tube 1014 to the heat exchange structure 2. The initially purified condensate is injected into the first chamber 209 of the heat exchange structure 2 through the second inlet pipe 203. Through the second U-shaped pipe 2011 penetrating the baffle 207, external cold water flows from the inlet pipe 205 into the tank 201, absorbing heat in close contact with the high-temperature outer wall of the second U-shaped pipe 2011. After releasing sensible heat, the condensate cools down and enters the second chamber 2010, exiting through the second drain pipe 204. The cold water is heated to preheated soft water and directly supplied to the boiler through the drain pipe 206. The cooled condensate enters the second filter structure 3, where tiny oil droplets are coalesced and separated by an oleophobic medium, thoroughly removing oil stains. Finally, it enters the gas-liquid separation structure 4, where dissolved oxygen, carbon dioxide, and other gases are efficiently removed under negative pressure. The resulting pure soft water is directly returned to the boiler system.

[0038] When excessive rust accumulates on the surface of the second cylinder 1010, the motor 1013 drives the connecting shaft 109 to rotate 180°, causing the pipe 1014 to switch to the connection with the first inlet pipe 102. The cleaning fluid is injected in reverse, flowing from the other end of the first U-shaped tube 104 through the first inlet pipe 102 into the pipe 1014, forcefully flushing the impurities in the first cylinder 108, the second cylinder 1010, and the through hole, and carrying the rust residue into the second outer shell 105. Finally, the control valve of the waste liquid pipe 106 is opened to centrally discharge the dirt. By using the rotation of the first filter structure 1 to intercept large particles of rust impurities, the 180° position reversal instantly converts the filter channel into a high-pressure flushing circuit, which can thoroughly remove accumulated impurities without stopping the machine. This not only ensures the continuity of condensate flow, but also fundamentally solves the problem of efficiency reduction caused by clogging in traditional filters, significantly reducing maintenance costs and extending equipment life.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A boiler condensate recovery device, comprising a first filter structure (1), the output end of the first filter structure (1) being connected to the input end of a heat exchange structure (2), the output end of the heat exchange structure (2) being connected to the input end of a second filter structure (3), and the output end of the second filter structure (3) being connected to a gas-liquid separation structure (4), characterized in that: The first filter structure (1) includes: The first outer shell (101) has a circumferential sidewall connected to a first liquid inlet pipe (102) and a first liquid outlet pipe (103), and one end of the first liquid inlet pipe (102) is connected to a first U-shaped pipe (104). The second outer shell (105) is connected to one end of the first outer shell (101) and connected to the waste liquid pipe (106). A turntable (107) is rotatably mounted between the first outer shell (101) and the second outer shell (105), and the outer side of the turntable (107) has several openings. The first cylinder (108) is fixed to the end face of the turntable (107) facing the first outer shell (101). A connecting shaft (109) is provided on the outer side of the first cylinder (108). One end of the connecting shaft (109) passes through the first outer shell (101) and extends outward. A tube (1014) is connected to the circumferential side of the first cylinder (108). The second cylinder (1010) is fixed to the end face of the turntable (107) facing the second outer shell (105), and several through holes are connected to the circumferential side of the second cylinder (1010).

2. The boiler condensate recovery equipment according to claim 1, characterized in that: The first support leg (1011) is fixedly installed at the bottom of both the first outer shell (101) and the second outer shell (105).

3. The boiler condensate recovery equipment according to claim 1, characterized in that: A support base (1012) is fixedly installed on the outside of the first housing (101). A motor (1013) is installed on the support base (1012). The output end of the motor (1013) is connected to the connecting shaft (109) through a coupling.

4. The boiler condensate recovery equipment according to claim 1, characterized in that: The heat exchange structure (2) includes: The tank (201) has a cover (202) installed at one end, and the tank (201) has a second liquid inlet pipe (203), a second liquid outlet pipe (204), a water inlet pipe (205) and a drain pipe (206) connected to its circumferential side. A baffle (207) is horizontally fixed inside the tank (201). One end of the baffle (207) is provided with a partition plate (208). The partition plate (208) is vertically fixed inside the tank (201) and divides it into a first chamber (209) and a second chamber (2010). The second U-shaped tube (2011) is connected at both ends to the first chamber (209) and the second chamber (2010) respectively and passes through the baffle (207).

5. A boiler condensate recovery device according to claim 4, characterized in that: The second inlet pipe (203) is connected to the first chamber (209), the second outlet pipe (204) is connected to the second chamber (2010), and the second inlet pipe (203) is connected to the first outlet pipe (103).

6. The boiler condensate recovery equipment according to claim 4, characterized in that: The bottom of the tank (201) is equipped with a second support leg (2012).

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