Flow regulating valve and waste heat recovery system with same

Abstract

The flow regulating valve comprises a valve body, a baffle, a valve rod and a valve plate, a first water inlet pipe is arranged on the upper portion of the valve body, a first water outlet pipe and a second water outlet pipe are arranged at the bottom of the valve body, the baffle is vertically arranged at the bottom of the valve body and located between the first water outlet pipe and the second water outlet pipe, and the valve plate is rotationally arranged at the top end of the baffle. The valve rod is rotationally arranged on the valve body and is connected with the valve plate; the waste heat recovery system further comprises a heat exchanger, a water storage barrel and a steam generator, a water outlet end is arranged on the heat exchanger and connected with a first water inlet pipe, the water storage barrel comprises an inner barrel and an outer barrel, a heating cavity is formed between the inner barrel and the outer barrel, the first water outlet pipe is connected with the inner barrel, and the second water outlet pipe is connected with the outer barrel. The steam generator is connected with the inner barrel through a water conveying pipe. Water flow can be controlled to be discharged from the first water outlet pipe or the second water outlet pipe by adjusting the position of the valve plate, so that the water temperature in the inner barrel is stable, and the water pump is prevented from being damaged due to overhigh water temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a flow regulating valve and a waste heat recovery system with the regulating valve. Background Art

[0002] In the field of garment processing, wrinkled garments need to be ironed to make them smooth and beautiful. During ironing, a steam generator is generally used to supply steam to an ironing table equipped with an iron. Steam generated by the steam generator enters the iron to iron the garments. After ironing, the steam enters a heat exchanger to recover the heat in the steam, avoiding energy waste. After the waste heat is recovered, the heat exchanger discharges wastewater, which also has a certain temperature. If directly discharged, it will cause some energy waste. To reduce energy consumption, the wastewater discharged from the heat exchanger can be collected in a water storage tank and then transported to the steam generator for reuse by a water pump. However, the number of times and time the ironing table is used during the ironing process vary, resulting in different steam discharge volumes. As a result, the temperature of the wastewater discharged from the heat exchanger is unstable. For example, when the ironing table is used frequently and for a long time, the temperature of the wastewater discharged from the heat exchanger is low. Conversely, when the ironing table is used less frequently and for a long time, the temperature of the wastewater discharged from the heat exchanger is high. The water pump has certain operating temperature requirements. Too high a water temperature can cause bubbles to form, causing damage to the water pump. Utility Model Content

[0003] The purpose of the present invention is to provide a flow regulating valve and a waste heat recovery system having the regulating valve in order to address the above-mentioned deficiencies in the prior art.

[0004] In order to solve the above problems, the technical solution adopted by the present invention is:

[0005] A flow regulating valve comprises a valve body of cylindrical structure, wherein a first water inlet pipe is provided on the upper portion of the valve body, and a first water outlet pipe and a second water outlet pipe are provided on the bottom portion of the valve body;

[0006] a baffle, vertically arranged at the bottom of the valve body and located between the first water outlet pipe and the second water outlet pipe;

[0007] A valve plate is rotatably arranged on the top of the baffle, and the valve plate has a semicircular structure;

[0008] The valve stem is rotatably arranged on the valve body and connected to the valve plate to drive the valve plate to rotate.

[0009] Preferably, the valve body comprises an upper shell and a lower shell, the upper shell and the lower shell are fixedly connected, and the baffle is arranged in the lower shell.

[0010] Preferably, a handle is provided at one end of the valve stem away from the valve plate.

[0011] Preferably, the valve stem is vertically arranged on the valve body, the valve stem is fixedly connected to the valve plate, and the valve stem is rotatably arranged on the baffle.

[0012] Preferably, the valve stem is horizontally arranged on the valve body, the valve stem is fixedly connected to the valve plate, and the valve stem is rotatably arranged on the baffle.

[0013] A waste heat recovery system includes a flow regulating valve, a heat exchanger, a water storage barrel and a steam generator. The heat exchanger is provided with a water outlet end, which is connected to a first water inlet pipe. The water storage barrel includes an inner barrel and an outer barrel, and a heating chamber is provided between the inner barrel and the outer barrel. The first water outlet pipe is connected to the inner barrel and communicates with the interior of the inner barrel. The second water outlet pipe is connected to the outer barrel and communicates with the heating chamber. The steam generator and the inner barrel are connected by a water pipe.

[0014] Preferably, a third water outlet pipe is connected to the outer barrel.

[0015] Preferably, the inner barrel is also connected to a second water inlet pipe.

[0016] Preferably, a heating coil is provided in the heating chamber, an input end of the heating coil is connected to the second water outlet pipe, and an output end of the heating coil is connected to the third water outlet pipe.

[0017] Preferably, the heat exchanger comprises a shell, a vacuum tube is arranged in the shell, and an exhaust gas input pipe, a cold water pipe and a hot water pipe are arranged on the shell.

[0018] The beneficial effects of adopting the above technical solution are:

[0019] In the present invention, the inner barrel of the water storage barrel is used to discharge water, and the water pump draws the water in the inner barrel into the steam generator. A flow regulating valve is provided between the heat exchanger and the water storage barrel, and the water outlet end of the heat exchanger is connected to the first water inlet pipe. Therefore, the waste water in the heat exchanger will enter the flow regulating valve from the first water inlet pipe and enter the water storage barrel from the flow regulating valve. When the waste water temperature is too high, the valve stem can be rotated to make the valve plate close the first water outlet pipe, and the waste water enters the heating chamber from the second water outlet pipe to heat the water in the water storage barrel. When the waste water temperature is low, the valve plate closes the second water outlet pipe, and the waste water enters the inner barrel from the first water outlet pipe. The water pump draws water from the inner barrel and enters the steam generator, thereby avoiding damage to the water pump caused by excessive water temperature. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a three-dimensional schematic diagram of the flow control valve of the utility model;

[0021] Figure 2 yes Figure 1Exploded diagram of flow control valve;

[0022] Figure 3 It is a three-dimensional schematic diagram of a flow control valve according to another embodiment of the present invention;

[0023] Figure 4 yes Figure 3 Exploded diagram of the flow control valve;

[0024] Figure 5 It is a structural diagram of the waste heat recovery system of the utility model.

[0025] In the figure: 1 is the valve body, 2 is the first water inlet pipe, 3 is the first water outlet pipe, 4 is the second water outlet pipe, 5 is the baffle, 6 is the valve plate, 7 is the valve stem, 8 is the upper shell, 9 is the lower shell, 10 is the handle, 11 is the heat exchanger, 12 is the water storage barrel, 13 is the steam generator, 14 is the inner barrel, 15 is the outer barrel, 16 is the heating chamber, 17 is the second water inlet pipe, 18 is the third water outlet pipe, 19 is the vacuum tube, 20 is the exhaust gas input pipe, 21 is the cold water pipe, 22 is the hot water pipe, and 23 is the water supply pipe. DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0029] like Figures 1 to 4As shown, a flow regulating valve includes a valve body 1, a baffle 5, a valve plate 6 and a valve stem 7. The valve body 1 is a cylindrical structure. A first water inlet pipe 2 is provided on the upper part of the valve body 1. A first water outlet pipe 3 and a second water outlet pipe 4 are provided at the bottom of the valve body 1. The baffle 5 is vertically arranged in the middle part of the bottom of the valve body 1. The baffle 5 is located between the first water outlet pipe 3 and the second water outlet pipe 4. The valve plate 6 is rotatably arranged on the top of the baffle 5. The valve plate 6 is a semicircular structure. The valve plate 6 can seal the left or right side of the baffle 5 so that water is discharged from the first water outlet pipe 3 or the second water outlet pipe 4; the valve stem 7 is rotatably arranged on the valve body 1 and is connected to the valve plate 6 for driving the valve plate 6 to rotate. In the utility model, the valve stem 7 is rotated to rotate the valve plate 6 to adjust the drainage volume of the first water outlet pipe 3 and the second water outlet pipe 4.

[0030] Furthermore, the portion of the valve stem 7 located outside the valve body 1 is provided with an external thread, and a locking nut is threadedly connected to the valve stem 7. The locking nut is located outside the valve body 1. After the valve stem 7 drives the valve plate 6 to rotate, in order to prevent the valve plate 6 from continuing to rotate, the locking nut can be tightened to lock the valve stem 7.

[0031] Furthermore, the valve body 1 includes an upper shell 8 and a lower shell 9, and the upper shell 8 and the lower shell 9 are fixedly connected, and can be fixedly connected by welding or by flange connection. The baffle 5 is arranged in the lower shell 9, and the baffle 5 can divide the lower shell 9 into two left and right chambers. The first water outlet pipe 3 and the second water outlet pipe 4 are respectively connected to the left and right chambers of the lower shell 9. The left and right chambers of the lower shell 9 can be sealed or opened by rotating the valve plate 6.

[0032] Furthermore, a handle 10 is provided at one end of the valve stem 7 away from the valve plate 6 , and the handle 10 facilitates screwing the valve stem 7 .

[0033] like Figure 1 and Figure 2 As shown, in one of the embodiments, the valve stem 7 is vertically arranged on the valve body 1, the axis of the valve stem 7 is colinear with the axis of the valve body 1, the valve stem 7 is fixedly connected to the valve plate 6, the axial direction of the valve stem 7 is arranged parallel to the axial direction of the valve plate 6, the valve stem 7 is located at the center of the valve plate 6, the valve stem 7 can drive the valve plate 6 to rotate, the valve plate 6 rotates with the axis of the valve stem 7 as the center, the lower end face of the valve plate 6 is fitted with the upper end face of the baffle 5, and the lower end of the valve stem 7 is rotatably arranged on the baffle 5. When the flow regulating valve is used to adjust the flow, it is only necessary to rotate the valve stem 7 to rotate the valve plate 6, and the opening size of the left and right chambers of the lower shell 9 can be adjusted to adjust the water flow into the left and right chambers, thereby playing a role in regulating the flow.

[0034] like Figure 3 and Figure 4 As shown, in another embodiment, the valve stem 7 is horizontally arranged on the valve body 1, the axis of the valve stem 7 is arranged perpendicular to the axis of the valve body 1, the valve stem 7 is rotatably arranged on the upper end of the baffle 5, the length direction of the valve stem 7 is the same as the length direction of the baffle 5, the valve stem 7 is fixedly connected to the valve plate 6, the axial direction of the valve stem 7 is arranged parallel to the radial direction of the valve plate 6, the valve stem 7 is horizontally rotatably arranged on the lower shell 9, and the valve stem 7 can drive the valve plate 6 to rotate with the axis of the valve stem 7 as the center. In this embodiment, the opening size of the left and right chambers of the lower shell 9 is controlled by rotating the valve stem 7, so that the left and right chambers of the lower shell 9 are opened or closed, and the water flow is controlled to be discharged from the first water outlet pipe 3 or the second water outlet pipe 4.

[0035] like Figure 5 As shown, a waste heat recovery system includes a flow regulating valve, a heat exchanger 11, a water storage barrel 12 and a steam generator 13. The heat exchanger 11 is provided with a water outlet, which is located at the lower part of the heat exchanger 11. The water outlet of the heat exchanger 11 is used to discharge wastewater. The water outlet is connected to the first water inlet pipe 2. The wastewater discharged from the heat exchanger 11 enters the valve body 1 through the first water inlet pipe 2. The water storage barrel 12 is a sandwich barrel. The water storage barrel 12 includes an inner barrel 14 and an outer barrel 15. A heating chamber 16 is provided between the inner barrel 14 and the outer barrel 15. The first water outlet pipe 3 is connected to the inner barrel 14, and the first water outlet pipe 3 is connected to the interior of the inner barrel 14. The second water outlet pipe 4 is connected to the outer barrel 15, and the second water outlet pipe 4 is connected to the heating chamber 16. The steam generator 13 and the inner The barrels 14 are connected by a water pipe 23. In the present invention, after the waste heat is recovered from the heat exchanger 11, the waste water is discharged from the water outlet end and enters the valve body 1 through the first water inlet pipe 2. When the temperature of the waste water discharged from the heat exchanger 11 is high, the valve plate 6 is rotated by rotating the valve stem 7 to close the chamber where the first water outlet pipe 3 of the valve body 1 is located. The waste water cannot be discharged from the first water outlet pipe 3 and can be discharged from the second water outlet pipe 4 into the heating chamber 16 between the inner barrel 14 and the outer barrel 15 to heat the water in the inner barrel 14. On the contrary, when the waste water temperature is not high, the chamber where the second water outlet pipe 4 of the valve body 1 is located is closed, and the waste water is discharged from the first water outlet pipe 3 into the inner barrel 14. The steam generator 13 extracts the water in the inner barrel 14 and transports it from the water pipe 23 for reuse, which can increase the water temperature entering the steam generator 13 and improve the energy utilization rate.

[0036] It should be noted that the connection between the first water outlet pipe 3 and the second water outlet pipe 4 can be converted, that is, the first water outlet pipe 3 is connected to the outer barrel 15 and is connected to the heating chamber 16, and the second water outlet pipe 4 is connected to the inner barrel 14 and is connected to the interior of the inner barrel 14. The first water outlet pipe 3 or the second water outlet pipe 4 is opened by rotating the valve stem 7 to allow wastewater to flow into the heating chamber or the inner barrel 14.

[0037] Furthermore, the outer barrel 15 is connected to a third water outlet pipe 18, which is in communication with the heating chamber 16. After the wastewater enters the heating chamber 16 and heats the water in the inner barrel 14, it is discharged from the third water outlet pipe 18. The output end of the third water outlet pipe 18 is connected to the inner barrel 14, so that the discharged wastewater can enter the inner barrel 14 for reuse, thereby saving water.

[0038] Furthermore, the inner barrel 14 is also connected to a second water inlet pipe 17, the output end of the second water inlet pipe 17 is connected to the interior of the inner barrel 14, and the input end of the second water inlet pipe 17 is connected to tap water, which can be used to replenish water externally to the inner barrel 14, and can also play a role in regulating the water temperature to prevent the water temperature from being too high.

[0039] Furthermore, a heating coil is provided in the heating chamber 16, the input end of the heating coil is connected to the second water outlet pipe 4, and the output end of the heating coil is connected to the third water outlet pipe 18. In this embodiment, the wastewater output from the flow regulating valve can enter the heating coil of the heating chamber 16, and the water in the inner barrel 14 is heated by the heating coil. After the wastewater flows out of the heating coil, it can be discharged from the third water outlet pipe 18.

[0040] Furthermore, the heat exchanger 11 includes an outer shell, in which a vacuum tube 19 is provided. The vacuum tube 19 is filled with an evaporative medium. A sealing plate is horizontally provided in the middle of the outer shell, and the vacuum tube 19 passes through the sealing plate. An exhaust gas inlet pipe 20, a cold water pipe 21 and a hot water pipe 22 are provided on the outer shell. The exhaust gas inlet pipe 20 is located below the sealing plate. Steam after ironing enters the outer shell of the heat exchanger 11 from the exhaust gas inlet pipe 20. After the exhaust gas contacts the vacuum tube 19, heat exchange is carried out, so that the exhaust gas is condensed into liquid and discharged from the water outlet of the heat exchanger 11. The cold water pipe 21 and the hot water pipe 22 are both located above the sealing plate. External cold water enters the outer shell through the cold water pipe 21. Due to the effect of the sealing plate, the cold water will not drip to the bottom of the sealing plate after entering. After the vacuum tube 19 exchanges heat with the exhaust gas, the heat will be transferred to the part of the vacuum tube 19 located above the sealing plate, and heat will be exchanged with the cold water entering the shell to heat the cold water. After the cold water is heated, it will be discharged from the hot water pipe 22 for reuse, thereby realizing the heat exchange effect.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A flow control valve, characterized in that: It comprises a valve body (1) having a cylindrical structure, wherein a first water inlet pipe (2) is provided at the upper portion of the valve body (1), and a first water outlet pipe (3) and a second water outlet pipe (4) are provided at the bottom portion of the valve body (1); A baffle (5) is vertically arranged at the bottom of the valve body (1) and is located between the first water outlet pipe (3) and the second water outlet pipe (4); A valve plate (6) is rotatably arranged on the top end of the baffle (5), and the valve plate (6) is a semicircular structure; A valve stem (7) is rotatably mounted on the valve body (1) and connected to the valve plate (6) for driving the valve plate (6) to rotate; The valve stem (7) is vertically arranged on the valve body (1), the valve stem (7) is fixedly connected to the valve plate (6), and the valve stem (7) is rotatably arranged on the baffle (5).

2. A flow control valve according to claim 1, characterized in that: The valve body (1) comprises an upper shell (8) and a lower shell (9), wherein the upper shell (8) and the lower shell (9) are fixedly connected, and the baffle (5) is arranged in the lower shell (9).

3. A flow control valve according to claim 1, characterized in that: A handle (10) is provided at one end of the valve stem (7) away from the valve plate (6).

4. A waste heat recovery system, characterized in that: The invention comprises a flow regulating valve according to any one of claims 1 to 3, and further comprises a heat exchanger (11), a water storage barrel (12) and a steam generator (13), wherein the heat exchanger (11) is provided with a water outlet, and the water outlet is connected to a first water inlet pipe (2), the water storage barrel (12) comprises an inner barrel (14) and an outer barrel (15), a heating chamber (16) is provided between the inner barrel (14) and the outer barrel (15), the first water outlet pipe (3) is connected to the inner barrel (14), the first water outlet pipe (3) is communicated with the interior of the inner barrel (14), the second water outlet pipe (4) is connected to the outer barrel (15), the second water outlet pipe (4) is communicated with the heating chamber (16), and the steam generator (13) and the inner barrel (14) are connected via a water pipe (23).

5. A waste heat recovery system according to claim 4, characterized in that: The outer barrel (15) is connected to a third water outlet pipe (18).

6. The waste heat recovery system according to claim 4, characterized in that: The inner barrel (14) is also connected to a second water inlet pipe (17).

7. The waste heat recovery system according to claim 4, characterized in that: A heating coil is provided in the heating chamber (16), the input end of the heating coil is connected to the second water outlet pipe (4), and the output end of the heating coil is connected to the third water outlet pipe (18).

8. The waste heat recovery system according to claim 4, characterized in that: The heat exchanger (11) comprises a shell, a vacuum tube (19) is provided in the shell, and an exhaust gas input pipe (20), a cold water pipe (21), and a hot water pipe (22) are provided on the shell.

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