Boiler blowdown water heat recovery device

Abstract

The utility model discloses a boiler sewage heat energy recovery device, it includes: heat exchange jar, heat exchange pipe, heat pipe support, filter, heat exchange jar include: outer jar body, inner jar body, jar body upper cover, jar body support, inner jar body is sleeved in outer jar body, and forms jar body isolation chamber between outer jar body and inner jar body, jar body upper cover rim and outer jar body upper end flange connection, outer jar body is fixed on jar body support, heat exchange pipe middle part is hung in inner jar body through heat pipe support, filter is fixed below heat pipe support, inner jar body is linked with jar body isolation chamber through filter, and the lateral both ends of outer jar body are equipped with heat exchange jar water inlet pipe and heat exchange jar drain respectively, and heat exchange jar water inlet pipe and heat exchange jar drain are communicated with inner jar body, and boiler sewage is injected into inner jar body through heat exchange jar water inlet pipe, and boiler waste water heats up the tap water in heat exchange pipe, and the filter filters out the impurity and heavy pollutant in boiler sewage and is temporarily stored in jar body isolation chamber.

Description

Technical Field

[0001] This utility model belongs to the field of heat energy recovery and utilization technology, specifically relating to a boiler wastewater heat energy recovery device. Background Technology

[0002] A boiler is an energy conversion device. The hot water or steam produced in a boiler can directly provide the heat energy needed for industrial production and people's lives. When the boiler is in normal operation, it needs to discharge some wastewater from time to time. Due to the wastewater and harmful impurities in the boiler, the boiler wastewater needs to be discharged into a wastewater expansion container or directly into a wastewater pool. However, the discharged wastewater usually contains a lot of heat energy. Direct discharge not only wastes a lot of heat energy, but also pollutes the surrounding environment. Summary of the Invention

[0003] The purpose of this invention is to solve the above-mentioned problems by providing a boiler wastewater heat recovery device.

[0004] A boiler wastewater heat recovery device includes: a heat exchange tank, heat exchange tubes, a heat tube support, and a filter; the heat exchange tank includes: an outer tank body, an inner tank body, a tank body cover, and a tank body support; the inner tank body is fitted inside the outer tank body, forming a tank body isolation cavity between the outer tank body and the inner tank body; the edge of the tank body cover is connected to the upper flange of the outer tank body; the outer tank body is fixed on the tank body support. The outer tank has two water pipe grooves on one side, which are connected to the inner tank. The two ends of the heat exchange tube are respectively fitted into the two water pipe grooves. The middle part of the heat exchange tube is suspended in the inner tank by a heat pipe support. The filter is fixed below the heat pipe support. The inner tank is connected to the tank isolation cavity through the filter. The upper and lower ends of the outer tank are respectively provided with a heat exchange tank inlet pipe and a heat exchange tank drain pipe, which are connected to the inner tank. Boiler wastewater is injected into the inner tank through the heat exchange tank inlet pipe. The boiler wastewater heats the tap water in the heat exchange tube. The filter removes impurities and heavy pollutants from the boiler wastewater and temporarily stores it in the tank isolation cavity.

[0005] The inner tank is provided with a filter seat at the lower end, and the filter seat is provided with an inner tank outlet at the lower end; the filter is fitted into the filter seat; the inner tank outlet is provided at the bottom of the inner tank, and the filter outlet hole is provided below the filter and fitted into the inner tank outlet.

[0006] The heat exchange tube is composed of multiple S-shaped copper tubes connected end to end in sequence, and the multiple S-shaped copper tubes are arranged in a ring array around the axis of the heat pipe support.

[0007] The inner tank is provided with a tube rack slot at the top, and there are 5 tube rack slots arranged in a circular equidistant array; the heat pipe support is provided with 5 snap-fit ​​arms, and the 5 snap-fit ​​arms on the heat pipe support are snapped into the 5 tube rack slots respectively.

[0008] The heat pipe support has an external threaded rod at its lower end and an internal threaded sleeve at its upper end, with the external threaded rod fitted into the internal threaded sleeve.

[0009] The filter is a cylindrical shell that can be fitted into a filter holder. The upper end of the filter shell has a filter inlet. The lower side wall of the filter inlet is sealed to the side wall of the filter holder by a sealing ring. The filter has a first filter media cavity and a second filter media cavity inside, which are separated by an inner partition. An inner inlet is located above the inner partition. A filter outlet is located in the lower middle part of the second filter media cavity.

[0010] The first filter media cavity is filled with zeolite; the second filter media cavity is filled with carbon fiber filter cotton.

[0011] The water circuit control components include: a first inlet valve, a drain valve, a second inlet valve, and an outlet water pump; the boiler drain outlet is connected to the inner tank through the first inlet valve; the drain valve is located on the drain pipe of the heat exchange tank; the second inlet valve and the outlet water pump are respectively connected to the two ends of the heat exchange tube.

[0012] The water circuit control assembly also includes a water circuit control panel, which is fixed on the outer tank. The water circuit control panel can control the on / off state of the first inlet valve, the drain valve, the second inlet valve, and the outlet water pump.

[0013] This technical solution provides a boiler wastewater heat recovery device, comprising: a heat exchange tank, heat exchange tubes, a heat tube support, and a filter; the heat exchange tank includes: an outer tank body, an inner tank body, a tank body cover, and a tank body support; the inner tank body is fitted inside the outer tank body, forming a tank body isolation cavity between the outer and inner tank bodies; the edge of the tank body cover is connected to the upper flange of the outer tank body; the outer tank body is fixed on the tank body support; the middle part of the heat exchange tubes is suspended in the inner tank body through the heat tube support; the filter is fixed below the heat tube support; the inner tank body is connected to the tank body isolation cavity through the filter; the upper and lower ends of the outer tank body are respectively provided with a heat exchange tank inlet pipe and a heat exchange tank outlet pipe, which are connected to the inner tank body; boiler wastewater is injected into the inner tank body through the heat exchange tank inlet pipe; the boiler wastewater heats the tap water in the heat exchange tubes; the filter removes impurities and heavy pollutants from the boiler wastewater and temporarily stores it in the tank body isolation cavity. Attached Figure Description

[0014] Figure 1 This is an overall schematic diagram of a boiler wastewater heat energy recovery device according to the present invention; Figure 2 This is a partial sectional view of a boiler wastewater heat recovery device according to the present invention; Figure 3 This is a half-sectional view of the heat exchange tank of a boiler wastewater heat energy recovery device according to this utility model; Figure 4 This is a schematic diagram of the connection status of the heat exchange tube and heat pipe support of a boiler wastewater heat energy recovery device according to this utility model; Figure 5 This is a schematic diagram of the filter structure of a boiler wastewater heat energy recovery device according to this utility model; Figure 6 This is a schematic diagram of the filter shell structure of a boiler wastewater heat energy recovery device according to the present invention; In the diagram: 11. Outer tank; 111. Flange connecting ring; 112. Water pipe trench; 113. Tank isolation cavity; 114. Heat exchanger tank inlet pipe; 115. Heat exchanger tank drain pipe; 12. Inner tank; 121. Pipe rack slot; 122. Filter seat; 123. Inner tank outlet; 124. Sealing ring; 13. Tank top cover; 14. Tank support; 2. Heat exchanger pipe; 3. Heat pipe support; 31. Clip-on arm. 32. External threaded rod; 4. Filter; 41. Internal threaded sleeve; 42. Filter inlet; 43. First filter media cavity; 44. Second filter media cavity; 45. Inner baffle; 451. Inner inlet; 46. Zeolite; 47. Carbon fiber filter cotton; 48. Filter outlet; 51. First inlet valve; 52. Drain valve; 53. Second inlet valve; 54. Outlet water pump; 55. Water circuit control panel. Detailed Implementation

[0015] The technical solution will be further described clearly and completely below with reference to the accompanying drawings. The described embodiments are only a part of the technical solution, not all of the embodiments. All other embodiments obtained by those skilled in the art based on this technical solution without creative effort are within the scope of protection of this utility model.

[0016] Example 1 See Figures 1 to 6 As shown, a boiler wastewater heat recovery device includes: a heat exchange tank, a heat exchange tube 2, a heat tube support 3, a filter 4, and a water circuit control assembly; The heat exchange tank includes: an outer tank body 11, an inner tank body 12, a tank cover 13, and a tank support 14; the inner tank body 12 is sleeved in the outer tank body 11, and the upper end of the inner tank body 12 is fixedly connected to the upper end of the outer tank body 11 or integrally formed; the outer tank body 11 is fixed on the tank support 14; the top of the outer tank body 11 is provided with a flange connecting ring 111, and the flange connecting ring 111 is provided with a tank body screw through hole; the edge of the tank cover 13 is provided with a cover screw through hole, and there are multiple tank body screw through holes and multiple cover screw through holes. The multiple tank body screw through holes and multiple cover screw through holes are arranged in a circular array and correspond to each other. The edge of the tank cover 13 is connected to the upper flange of the outer tank body 11. The volume of the inner tank is the same as the boiler water capacity; The outer tank 11 has two water pipe grooves 112 on one side, which are connected to the inner tank 12. A tank isolation cavity 113 is formed between the outer tank 11 and the inner tank 12. A heat exchange tank inlet pipe 114 is provided at the upper end of one side of the outer tank 11, which is connected to the upper end of the inner side of the inner tank 12. The inner opening of the heat exchange tank inlet pipe 114 is lower than the water pipe grooves 112. A heat exchange tank drain pipe 115 is provided at the lower end of one side of the outer tank 11, which is connected to the lower end of the inner side of the inner tank 12. The inner tank 12 has a pipe rack slot 121 at the top, with 5 pipe rack slots 121 arranged in a circular, equidistant array; the lower end of the inner tank 12 has a filter seat 122, and the lower end of the filter seat 122 has an inner tank outlet 123; the inner tank outlet 123 is connected to the tank isolation cavity 113; the side wall of the filter seat 122 is provided with a sealing ring 124; The heat exchange tube 2 is composed of multiple S-shaped copper tubes connected end to end in sequence. The multiple S-shaped copper tubes are arranged in a ring array around the axis of the heat pipe support 3. The heat exchange tube 2 can also be arranged in a spiral array. The heat exchange tube 2 exchanges heat in the inner tank 12 in a curved manner. The heat exchange tube 2 is fixed on the heat pipe support 3. The heat pipe support 3 is provided with 5 snap-fit ​​arms 31, which are snapped into 5 tube support slots 121 respectively. The heat exchange tube 2 is provided with a heat exchange tube inlet 21 and a heat exchange tube outlet 22 at both ends, which are respectively fitted into 2 water pipe grooves 112. The heat pipe support 3 is provided with an external threaded rod 32 at its lower end, and the filter 4 is provided with an internal threaded sleeve 41 at its upper end. The external threaded rod 32 is sleeved in the internal threaded sleeve 41, and the external threaded rod 32 and the internal threaded sleeve 41 are threadedly locked together. The filter 4 is a cylindrical shell that fits into the filter seat 122. The upper end of the filter 4 shell has a filter inlet 42. The lower side wall of the filter inlet 42 is sealed to the side wall of the filter seat 122 via a sealing ring 124. The filter 4 has a first filter media cavity 43 and a second filter media cavity 44, separated by an inner partition 45. An inner inlet 451 is located above the inner partition 45. The first filter media cavity 43 is filled with zeolite 46, and the second filter media cavity 44 is filled with carbon fiber filter cotton 47. A filter outlet 48 is located at the lower center of the second filter media cavity 44. Water enters the filter 4 through the filter inlet 42 and undergoes secondary filtration through the zeolite 46 and carbon fiber filter cotton 47 to remove impurities and heavy pollutants from the boiler. The filtered water is then temporarily stored in the tank isolation cavity 113.

[0017] The heat pipe bracket 3 is detachably fitted into the inner tank 12; the filter 4 is a replaceable consumable and is detachably connected to the heat pipe bracket 3.

[0018] The water circuit control components include: a first inlet valve 51, a drain valve 52, a second inlet valve 53, an outlet water pump 54, and a water circuit control panel 55; One end of the first inlet valve 51 is connected to the boiler drain outlet pipe, and the water pipe of the first inlet valve 51 is connected to the inlet pipe 114 of the heat exchange tank; the water pipe of the drain valve 52 is connected to the drain pipe 115 of the heat exchange tank; the second inlet valve 53 is connected to the inlet pipe 21 of the heat exchange tube; the outlet water pump 54 is connected to the outlet pipe 22 of the heat exchange tube; the second inlet valve 53 and the outlet water pump 54 are respectively connected to the inlet and outlet pipes of the heat exchange tube 2; the tap water source is connected to the pipe of the second inlet valve 53 through a pipeline, and the outlet water pump 54 is connected to the water storage tank through a pipeline. The tap water is heated by heat exchange in the heat exchange tank, and the heated water is stored in the water storage tank.

[0019] The water circuit control panel 55 is fixed on the outer tank 11. The water circuit control panel 55 can control the on / off of the first water inlet valve 51, the drain valve 52, the second water inlet valve 53 and the water pump 54. A temperature sensor is also provided on the heat exchange tube outlet 22. The temperature sensor is electrically connected to the water circuit control panel 55. The temperature of the heat exchange tube outlet 22 is displayed through the water circuit control panel 55.

[0020] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A boiler wastewater heat recovery device, comprising: Heat exchange tank, heat exchange tube (2), heat pipe support (3), filter (4); the heat exchange tank includes: outer tank body (11), inner tank body (12), tank body cover (13), tank body support (14); the inner tank body (12) is fitted into the outer tank body (11), and a tank body isolation cavity (113) is formed between the outer tank body (11) and the inner tank body (12); the edge of the tank body cover (13) is connected to the upper flange of the outer tank body (11); the outer tank body (11) is fixed on the tank body support (14); The features are as follows: two water pipe grooves (112) are provided on one side of the outer tank (11), and the two water pipe grooves (112) are connected to the inner tank (12); the two ends of the heat exchange pipe (2) are respectively sleeved in the two water pipe grooves (112); the middle part of the heat exchange pipe (2) is suspended in the inner tank (12) through the heat pipe support (3); the filter (4) is fixed below the heat pipe support (3); the inner tank (12) is connected to the tank isolation cavity (113) through the filter (4); the outer The upper and lower ends of the side of the tank (11) are respectively provided with a heat exchange tank inlet pipe (114) and a heat exchange tank drain pipe (115), which are connected to the inner tank (12); the boiler wastewater is injected into the inner tank (12) through the heat exchange tank inlet pipe (114); the boiler wastewater heats the tap water in the heat exchange tube (2); the filter (4) filters out impurities and heavy pollutants in the boiler wastewater and temporarily stores it in the tank isolation cavity (113).

2. The boiler wastewater heat recovery device according to claim 1, characterized in that: The inner tank (12) is provided with a filter seat (122) at the lower end, and the filter seat (122) is provided with an inner tank outlet (123) at the lower end; the filter (4) is fitted into the filter seat (122); the inner tank (12) is provided with an inner tank outlet (123) below the inner tank (12), and the filter (4) is provided with a filter outlet hole (48) below the filter, which is fitted into the inner tank outlet (123).

3. The boiler wastewater heat recovery device according to claim 1, characterized in that: The heat exchange tube (2) is composed of multiple S-shaped copper tubes connected end to end in sequence, and the multiple S-shaped copper tubes are arranged in a ring array around the heat pipe support (3).

4. The boiler wastewater heat recovery device according to claim 1, characterized in that: The inner tank (12) is provided with a tube rack slot (121) at the top. There are 5 tube rack slots (121) arranged in a ring-shaped equidistant array. The heat pipe support (3) is provided with 5 snap-fit ​​arms (31). The 5 snap-fit ​​arms (31) on the heat pipe support (3) are snapped into the 5 tube rack slots (121) respectively.

5. The boiler wastewater heat recovery device according to any one of claims 1-3, characterized in that: The heat pipe support (3) is provided with an external thread rod (32) at the lower end, and the filter (4) is provided with an internal thread sleeve (41) at the upper end. The external thread rod (32) is sleeved in the internal thread sleeve (41).

6. The boiler wastewater heat recovery device according to claim 5, characterized in that: The filter (4) is a cylindrical shell that can be fitted into the filter seat (122). The upper end of the shell of the filter (4) is provided with a filter inlet (42). The lower side wall of the filter inlet (42) is sealed to the side wall of the filter seat (122) by a sealing ring (124). The filter (4) is provided with a first filter material cavity (43) and a second filter material cavity (44). The first filter material cavity (43) and the second filter material cavity (44) are separated by an inner baffle (45). An inner inlet (451) is provided above the inner baffle (45). A filter outlet (48) is provided in the lower middle part of the second filter material cavity (44).

7. The boiler wastewater heat recovery device according to claim 6, characterized in that: The first filter media cavity (43) is filled with zeolite (46); the second filter media cavity (44) is filled with carbon fiber filter cotton (47).

8. The boiler wastewater heat recovery device according to claim 7, characterized in that: It also includes a water circuit control component, which includes: a first inlet valve (51), a drain valve (52), a second inlet valve (53), and an outlet water pump (54); the boiler drain outlet is connected to the inner tank (12) through the first inlet valve (51); the drain valve (52) is located on the heat exchange tank drain pipe (115); the second inlet valve (53) and the outlet water pump (54) are respectively connected to the two ends of the heat exchange tube (2).

9. The boiler wastewater heat recovery device according to claim 8, characterized in that: The water circuit control assembly also includes a water circuit control panel (55), which is fixed on the outer tank (11). The water circuit control panel (55) can control the on / off of the first inlet valve (51), the drain valve (52), the second inlet valve (53), and the outlet water pump (54).

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