Energy-saving device for recovering vented gas of oil-free screw blower

Abstract

The utility model discloses a kind of recovery energy-saving devices of oil-free screw blower vent gas, belong to the technical field of energy saving of blower, the device includes series connection's gas recovery mechanism and heating exhaust mechanism, gas recovery mechanism is collected to the high-temperature high-pressure gas of blower vent by exhaust pipe into gas storage tank;Heating exhaust mechanism is carried out to the high-efficiency heat exchange of recycled gas by circulation pipe and cooling fin communicated with gas storage tank, and utilizes exhaust fan to send the hot air after heat exchange to operation area.The utility model solves the double waste problem of compressed gas and thermal energy caused by vent gas direct discharge in prior art, realizes the double recovery of waste gas's matter and energy, and energy-saving environmental protection effect is remarkable.

Description

Technical Field

[0001] This utility model relates to the field of energy-saving technology for blowers, and in particular to an energy-saving device for recovering the vented air of an oil-free screw blower. Background Technology

[0002] Oil-free screw blowers are an important air source device and are widely used in industrial production fields with high requirements for clean air, such as textiles, food processing and electronics manufacturing. During operation, the blower compresses air through the high-speed rotation of the screw rotor to provide high-pressure gas that meets process requirements. However, during the gas compression process, a large amount of electrical energy is inevitably converted into heat energy, resulting in the temperature of the discharged compressed gas being significantly higher than the ambient temperature.

[0003] To adapt to fluctuations in downstream gas consumption or to protect equipment during start-up and shutdown, blowers need to perform depressurization operations, directly releasing some unnecessary high-pressure gas. In current technical practices, this vented gas is usually directly discharged into the atmosphere. This approach firstly wastes compressed gas because the electrical energy consumed in compressing it is completely lost. The discharged gas itself carries a large amount of heat energy, which is also wasted, resulting in a double loss of energy and increasing the company's operating costs. Furthermore, additional energy is required for heating the plant in winter, further exacerbating energy consumption. Utility Model Content

[0004] In the existing technology, when an oil-free screw blower releases pressure and vents, the high-temperature and high-pressure gas discharged is directly emitted, which not only wastes the energy of the compressed gas but also loses a large amount of heat energy contained therein, resulting in low energy utilization and high operating costs. This utility model aims to provide an energy-saving device for recovering vented gas from an oil-free screw blower with an improved structure that can effectively solve the above problems.

[0005] This utility model provides an energy-saving device for recovering exhaust gas from an oil-free screw blower. It is applied to a blower system including a blower, an intake pipe, a gas-water separator, and a gas delivery pipe. The device includes a gas recovery mechanism and a heating exhaust mechanism.

[0006] The gas recovery mechanism includes a gas storage tank, an exhaust pipe connected to the blower's vent, and a gas delivery pipe. The heating exhaust mechanism includes a circulation pipe and heat sinks installed on the outer wall of the circulation pipe.

[0007] Furthermore, the gas supply pipe of the gas recovery mechanism is connected to the circulation pipe of the heating and exhaust mechanism to transport the recovered gas to the circulation pipe for heat exchange.

[0008] Preferably, the exhaust pipe is provided with a return valve.

[0009] Preferably, the air supply pipe is equipped with a regulating valve.

[0010] Preferably, the air supply pipe is further provided with a first filter screen, which is located upstream of the regulating valve.

[0011] Preferably, the heating exhaust mechanism further includes an exhaust fan, which is positioned to blow air toward the heat sink.

[0012] Preferably, the heating and exhaust mechanism further includes a mounting frame, in which the heat sink and the exhaust fan are both disposed.

[0013] Preferably, the front side of the mounting frame is provided with a mounting plate, the exhaust fan is mounted on the mounting plate, and a second filter screen is provided on the air inlet side of the exhaust fan.

[0014] Preferably, the circulation tube is curved.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model, by setting up a gas recovery mechanism and a heating exhaust mechanism, first recovers the high-temperature gas discharged by the blower to the gas storage tank, and then sends it into the circulation pipe for heat exchange through the heat sink. This solves the problem of double waste of compressed gas and heat energy caused by the direct discharge of the blower's exhaust gas in the prior art, and achieves the technical effect of double recovery and utilization of the exhaust gas's material and heat energy, significantly improving the comprehensive energy utilization rate.

[0017] 2. This utility model solves the problem of low waste heat recovery efficiency in the prior art by setting up a circulation pipe with a curved shape and multiple heat dissipation fins installed on it, and cooperating with an exhaust fan for forced air supply. It achieves the technical effect of efficient and rapid recovery and conversion of heat energy in the exhaust gas, which can effectively heat the work area and significantly reduce additional heating costs.

[0018] 3. This utility model solves the problems that impurities in the recovered gas may damage downstream equipment and dust in the environment may clog the fan by setting a first filter screen on the gas supply pipeline and a second filter screen at the front end of the exhaust fan. It achieves the technical effect of purifying the gas source and protecting the stable operation of the equipment, and improves the reliability and service life of the whole device. Attached Figure Description

[0019] Figure 1 This is a perspective view of an energy-saving device for recovering exhaust gas from an oil-free screw blower, as proposed in this utility model.

[0020] Figure 2This is a front view of an energy-saving device for recovering vented air from an oil-free screw blower, as proposed in this utility model.

[0021] Figure 3 This is a schematic diagram of the mechanism of an energy-saving device for recovering exhaust gas from an oil-free screw blower, as proposed in this utility model.

[0022] Figure 4 This is a partial structural schematic diagram of an energy-saving device for recovering vented air from an oil-free screw blower, as proposed in this utility model.

[0023] Legend:

[0024] 1. Main body; 2. Gas recovery mechanism; 201. Return valve; 202. Exhaust pipe; 203. Gas storage tank; 204. Gas supply pipe; 205. Regulating valve; 206. First filter screen; 3. Heating and exhaust mechanism; 301. Flange; 302. Bolt; 303. Circulation pipe; 304. Heat sink; 305. Mounting frame; 306. Mounting plate; 307. Exhaust fan; 308. Second filter screen; 4. Inlet pipe; 5. Gas-water separator; 6. Gas delivery pipe. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0026] Example:

[0027] Please refer to Figures 1 to 4 This utility model provides an energy-saving device for recovering vented gas from an oil-free screw blower, which aims to solve the energy waste problem caused by the direct discharge of high-temperature and high-pressure gas from blowers in the prior art.

[0028] like Figure 1 and Figure 3 As shown, the energy-saving device for recovering exhaust gas from an oil-free screw blower is applied to a blower system including a body 1, an intake pipe 4, a gas-water separator 5, and an exhaust pipe 6. The outlet of the body 1 is connected to the exhaust pipe 6 via the gas-water separator 5. The energy-saving device includes a gas recovery mechanism 2 and a heating exhaust mechanism 3 connected to the gas recovery mechanism 2. The gas recovery mechanism 2 is used to recover and store the gas emitted by the body 1, while the heating exhaust mechanism 3 is used to reuse the heat energy carried by the recovered gas.

[0029] To solve the above-mentioned technical problems, the technical solution of this embodiment is that the energy-saving recycling device captures and reuses the gas released from the machine body 1 by setting a gas recovery mechanism 2.

[0030] Please refer to the following carefully. Figure 3 and Figure 4 The structure will be described in detail below:

[0031] The gas recovery mechanism 2 mainly consists of an exhaust pipe 202, a gas storage tank 203, and a gas delivery pipe 204. One end of the exhaust pipe 202 is fixedly connected to the vent of the machine body 1 through a pipe flange 301, and the other end is fixedly connected to the inlet of the gas storage tank 203. A return valve 201 is also fixedly installed on the exhaust pipe 202 to control the opening and closing of the passage for the vented gas to enter the gas storage tank 203.

[0032] Gas storage tank 203 is a pressure vessel used to store high-pressure gas recovered from the machine body 1;

[0033] One end of the gas supply pipe 204 is fixedly connected to the outlet of the gas storage tank 203. A first filter screen 206 and a regulating valve 205 are fixedly installed on the pipe in sequence. The first filter screen 206 is located upstream of the regulating valve 205 and is used to filter impurities that may be contained in the recovered gas. The regulating valve 205 is used to precisely control the flow rate of the gas supplied from the gas supply pipe 204.

[0034] This gas recovery mechanism 2, consisting of valves, pipes, storage tanks, and filter components, ensures that the vented gas that would otherwise be directly wasted can be completely captured, stored, and purified, providing a stable and clean gas source for subsequent heat energy recovery and reuse.

[0035] Based on the above embodiments, this utility model also includes a heating exhaust mechanism 3 for reusing the thermal energy of the recovered gas. As a preferred embodiment, please refer to... Figure 2 and Figure 4 The heating and exhaust mechanism 3 includes a mounting frame 305 as an integral frame, a circulation pipe 303 and multiple heat sinks 304 fixedly connected to its outer wall, all of which are disposed in the mounting frame 305. The circulation pipe 303 is curved, and its air inlet end is fixedly connected to the end of the air supply pipe 204 through a flange 301 and bolts 302. A mounting plate 306 is fixedly connected to the front side of the mounting frame 305, and an exhaust fan 307 is fixedly mounted on the mounting plate 306. Its position allows it to blow air toward the heat sinks 304. A second filter screen 308 is also fixedly mounted on the air inlet side of the exhaust fan 307.

[0036] Working principle: When the machine body 1 is started, the gas in the intake pipe 4 is compressed and filtered for moisture by the gas-water separator 5 before being transported to the work site through the gas delivery pipe 6. When the machine body 1 is depressurized, the return valve 201 is opened, and the excess return gas is recovered into the gas storage tank 203 through the exhaust pipe 202. When these return gases are needed, the gas flow rate in the delivery pipe 204 is controlled by rotating the regulating valve 205. The first filter 206 at the front end of the delivery pipe 204 can filter impurities in the return gas. The gas recovery mechanism 2 can directly vent the wasted redundant gas for reuse, reducing energy consumption and operating costs.

[0037] The gas temperature after being compressed by the screw is significantly higher than the ambient temperature. The discharged gas has a large amount of heat energy. The circulation pipe 303 is connected to the gas supply pipe 204 via the flange 301 fixed by bolts 302. The discharged gas is transported into the circulation pipe 303. Because the circulation pipe 303 is curved, it increases the flow time of the discharged gas inside the circulation pipe 303. Multiple heat sinks 304 with good thermal conductivity are installed on its outer surface, which can fully dissipate the heat energy of the discharged gas into the external environment. The heat sinks 304 are installed in the mounting frame 305. An exhaust fan 307 is installed on the mounting plate 306 on the front side of the mounting frame 305, which can blow the heat energy emitted by the discharged gas to the front working area to provide heating for the factory in winter. The second filter 308 can prevent impurities from entering the exhaust fan 307 and prevent equipment jamming. The heating exhaust mechanism 3 can fully recover and utilize the heat energy of the discharged gas, significantly reducing heating costs, improving the overall energy utilization rate, and saving energy and protecting the environment.

Claims

1. An energy-saving device for recovering vented gas from an oil-free screw blower, applied to a blower system including a body (1), an inlet pipe (4), a gas-liquid separator (5), and a gas delivery pipe (6), wherein the energy-saving device comprises: Gas recovery mechanism (2), the gas recovery mechanism (2) includes a gas storage tank (203), an exhaust pipe (202) and a gas delivery pipe (204), the exhaust pipe (202) is connected to the vent of the body (1) and to the gas storage tank (203), and the gas delivery pipe (204) is connected to the gas storage tank (203); The feature is that the energy-saving recycling device further includes a heating exhaust mechanism (3), which includes a circulation pipe (303) and a heat sink (304) disposed on the outer wall of the circulation pipe (303). The circulation pipe (303) is connected to the gas delivery pipe (204) of the gas recovery mechanism (2) for transporting gas from the gas storage tank (203) and exchanging heat. The circulation pipe (303) is curved and is connected to the gas delivery pipe (204) through a flange (301) and bolts (302).

2. The energy-saving device for recovering exhaust gas from an oil-free screw blower according to claim 1, characterized in that, The gas recovery mechanism (2) also includes a return valve (201) installed on the exhaust pipe (202), which is used to control the gas discharged from the machine body (1) to enter the gas storage tank (203).

3. The energy-saving device for recovering exhaust gas from an oil-free screw blower according to claim 1, characterized in that, The gas recovery mechanism (2) also includes a regulating valve (205) disposed on the gas supply pipe (204).

4. The energy-saving device for recovering exhaust gas from an oil-free screw blower according to claim 3, characterized in that, The air supply pipe (204) is also provided with a first filter screen (206), which is located upstream of the regulating valve (205).

5. The energy-saving device for recovering vented air from an oil-free screw blower according to claim 1, characterized in that, The heating exhaust mechanism (3) also includes an exhaust fan (307), which is positioned to blow air toward the heat sink (304).

6. The energy-saving device for recovering vented air from an oil-free screw blower according to claim 5, characterized in that, The heating and exhaust mechanism (3) also includes a mounting frame (305), in which the heat sink (304) and the exhaust fan (307) are both disposed.

7. The energy-saving device for recovering exhaust gas from an oil-free screw blower according to claim 6, characterized in that, The mounting frame (305) is provided with a mounting plate (306) on the front side, the exhaust fan (307) is mounted on the mounting plate (306), and the heating exhaust mechanism (3) further includes a second filter (308) provided on the air inlet side of the exhaust fan (307).

8. The energy-saving device for recovering exhaust gas from an oil-free screw blower according to claim 1, characterized in that, The blower system also includes an air-water separator (5) and an air supply pipe (6), and the outlet of the machine body (1) is connected to the air supply pipe (6) via the air-water separator (5).

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