Tail gas cooling and purifying device of single-cavity explosion-proof diesel engine

Abstract

The utility model discloses a single-chamber explosion-proof diesel engine tail gas cooling and purifying device which comprises a box body, a flame arrester is arranged at the top of the box body, a flue cap is arranged at the upper end of the flame arrester, a smoke exhaust pipe communicated with a diesel engine exhaust system is arranged on the flue cap, and a gas-water mixing mechanism is arranged in the box body. Through the single-cavity design, the size occupation of the device in the width direction is remarkably reduced, so that the device can be suitable for vehicle types with limited width, such as compact vehicles or engineering vehicles with specific purposes, the application range is widened, and the device is suitable for popularization and application. And the applicability and the flexibility of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof engines, in particular to a single-chamber explosion-proof diesel engine tail gas cooling and purification device. Background Technique

[0002] In the field of explosion-proof diesel engine tail gas treatment, as an effective tail gas purification device, the water washing tank is widely used to remove particulate matter and some harmful gases in the tail gas; however, the existing design of the water washing tank has several significant defects.

[0003] First of all, the existing design of the water washing tank occupies a large size in the width direction. This defect directly limits its application in vehicles with limited width, such as some compact vehicles or engineering vehicles for specific purposes.

[0004] Secondly, the existing water washing tank structure generally lacks an efficient gas-water separation device, resulting in the need to consume more water resources per unit working time, increasing the operating cost. Incomplete gas-water separation may also affect the tail gas purification efficiency and reduce the overall performance of the device.

[0005] Finally, the internal chamber structure of the existing water washing tank is complex with numerous partitions, which not only increases the manufacturing difficulty and cost, but also causes a large resistance when the air flow passes through the device, not only increasing the back pressure of the exhaust system and having an adverse impact on the power performance of the engine. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the above technical deficiencies and propose a single-chamber explosion-proof diesel engine tail gas cooling and purification device to solve the problems raised in the background technique.

[0007] To achieve the above technical purpose, the technical solution of the utility model provides a single-chamber explosion-proof diesel engine tail gas cooling and purification device, including a box body. A flame arrester is arranged at the top of the box body, a flue cap is arranged at the upper end of the flame arrester, a smoke exhaust pipe communicated with the diesel engine exhaust system is arranged on the flue cap. A water replenishing mechanism and an air inlet flange are arranged on the side of the box body, and a drain valve is arranged at the bottom. An air-water mixing mechanism is arranged inside the box body, an air inlet pipe communicated with the air flange is arranged on the air-water mixing mechanism, and an air-water separation mechanism is arranged between the air-water mixing mechanism and the flame arrester.

[0008] Furthermore, the air-water separation mechanism includes a first partition and a second partition arranged in sequence from bottom to top. Ventilation holes are arranged on both the first partition and the second partition. The first partition is fixedly connected to the inner wall of the box body. An adjusting screw is arranged between the first partition and the second partition. The lower end of the adjusting screw is fixedly connected to the first partition, and the upper end passes through the second partition and is provided with a nut. A spring is arranged on the adjusting screw between the first partition and the second partition.

[0009] Furthermore, the first partition is a hollow water tank, the water replenishing mechanism is a float valve, an inlet pipe and an outlet pipe are arranged below the first partition, the inlet pipe is communicated with an external water tank, and the outlet pipe is communicated with the water replenishing mechanism.

[0010] Furthermore, the air-water mixing mechanism includes a mixing tank, a gas guiding tank and a boiling prevention cover. The mixing tank is arranged inside the gas guiding tank, and the bottoms of both are communicated with the box body. The boiling prevention cover is arranged above the gas guiding tank, and the inlet pipe passes through the boiling prevention cover, and its end is arranged inside the mixing tank.

[0011] Furthermore, fins penetrating through the inside and outside are arranged on the side wall of the box body, clamping grooves matched with the fins are arranged on the second partition, and a liquid level gauge communicated with the box body is arranged outside the box body.

[0012] Compared with the prior art, the beneficial effects of the present utility model include:

[0013] 1. By adopting the exhaust gas cooling and purification design of a single chamber, the present utility model significantly reduces the size occupation of the device in the width direction, enabling the device to be applicable to vehicle models with limited width, such as compact vehicles or engineering vehicles for specific purposes, thereby broadening the application range and improving the applicability and flexibility of the device.

[0014] 2. Through the air-water separation mechanism, the present utility model not only reduces the consumption of water resources per unit working time, reduces the operation cost, but also improves the air-water separation efficiency, thereby enhancing the exhaust gas purification efficiency and the overall performance of the device; at the same time, the simplified internal chamber structure and the reduced number of partitions reduce the manufacturing difficulty and cost. Description of the Drawings

[0015] Figure 1 is a three-dimensional schematic diagram of a single-chamber explosion-proof diesel engine exhaust gas cooling and purification device provided by the present utility model;

[0016] Figure 2 is an internal structure schematic diagram of a single-chamber explosion-proof diesel engine exhaust gas cooling and purification device provided by the present utility model;

[0017] Figure 3 is a schematic diagram of the air-water separation mechanism of a single-chamber explosion-proof diesel engine exhaust gas cooling and purification device provided by the present utility model. Detailed Embodiment

[0018] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0019] Embodiment 1

[0020] Referring to Figure 1 、 Figure 2 FIGS.

[0021] The present utility model provides a single-chamber explosion-proof diesel engine exhaust gas cooling and purification device, which mainly includes a box body 1. A flame arrester 2 is provided at the top of the box body 1, and a flue cap 3 is installed at the upper end of the flame arrester 2; a smoke exhaust pipe 4 communicating with the diesel engine exhaust system is equipped on the flue cap 3 for discharging the treated exhaust gas. A liquid level gauge 5, a water replenishing mechanism 6, and an air inlet flange 7 are provided on the side of the box body 1, and a drain valve 13 is installed at the bottom for regularly discharging the accumulated water in the box body.

[0022] Referring to Figure 3 FIGS.

[0023] Both the first partition plate 901 and the second partition plate 902 are provided with ventilation holes 907. The function of the ventilation holes 907 is to increase the flow rate of the flue gas when it passes through. According to the Joule-Thomson effect, when a gas passes through a valve or an orifice plate under a fixed pressure, if the flow rate increases, the temperature of the gas will decrease. Therefore, the design of the ventilation holes 907 enables the flue gas to increase its flow rate when passing through, resulting in a decrease in its temperature. Such a temperature decrease is conducive to the condensation of the moisture carried by it. In practical applications, the ventilation holes 907 on the two partition plates can be set in a non-facing state, or the distance between the two partition plates can be changed by nuts 906 to obtain the best water-vapor separation effect.

[0024] Embodiment 2,

[0025] Based on Embodiment 1, referring to Figure 3 , the first partition plate 901 is designed as a hollow water tank, aiming to reduce its temperature by connecting with an external water tank, facilitating the condensation of the moisture carried by the flue gas. The water replenishing mechanism 6 adopts a float valve structure and can automatically replenish water according to the water level in the box body 1. Below the first partition plate 901, a water inlet pipe 908 and a water outlet pipe 909 are provided. The water inlet pipe 908 is connected to the external water tank, and the water outlet pipe 909 is connected to the water replenishing mechanism 6.

[0026] To enhance the water-vapor separation effect of the second partition plate 902, fins 101 penetrating the inside and outside are provided on the side wall of the box body 1, and a clamping groove 903 closely matching the fins 101 is provided on the second partition plate 902. The second partition plate 902 is connected to the fins 101 through the clamping groove 903, thereby conducting the heat on it to the outside of the box body to reduce its own temperature and facilitate the condensation of water vapor on it.

[0027] The specific embodiments of the present invention described above do not constitute a limitation to the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A single-chamber explosion-proof diesel engine exhaust gas cooling and purification device, comprising a box body. A flame arrester is provided at the top of the box body. A flue cap is provided at the upper end of the flame arrester. A smoke exhaust pipe communicating with the diesel engine exhaust system is provided on the flue cap. A water replenishing mechanism and an air inlet flange are provided on the side of the box body, and a drain valve is provided at the bottom. It is characterized in that: A gas-water mixing mechanism is arranged inside the box body. An air inlet pipe communicating with the air inlet flange is arranged on the gas-water mixing mechanism. A gas-water separation mechanism is arranged between the gas-water mixing mechanism and the flame arrester.

2. The single-chamber explosion-proof diesel engine exhaust gas cooling and purification device according to claim 1, characterized in that: The gas-water separation mechanism includes a first partition plate and a second partition plate arranged in sequence from bottom to top. Ventilation holes are arranged on both the first partition plate and the second partition plate. The first partition plate is fixedly connected to the inner wall of the box body. An adjusting screw rod is arranged between the first partition plate and the second partition plate. The lower end of the adjusting screw rod is fixedly connected to the first partition plate, and the upper end passes through the second partition plate and is provided with a nut. A spring is arranged on the adjusting screw rod between the first partition plate and the second partition plate.

3. The single-chamber explosion-proof diesel engine exhaust gas cooling and purification device according to claim 2, characterized in that: The first partition plate is a hollow water tank. The water replenishing mechanism is a float valve. A water inlet pipe and a water outlet pipe are arranged below the first partition plate. The water inlet pipe is communicated with an external water tank, and the water outlet pipe is communicated with the water replenishing mechanism.

4. A single-chamber explosion-proof diesel engine exhaust gas cooling and purification device according to claim 2 or 3, characterized in that: The gas-water mixing mechanism includes a mixing tank, a gas guiding tank and a boiling prevention cover. The mixing tank is arranged inside the gas guiding tank, and the bottoms of both are communicated with the box body. The boiling prevention cover is arranged above the gas guiding tank. The air inlet pipe passes through the boiling prevention cover, and its end is arranged inside the mixing tank.

5. The single-chamber explosion-proof diesel engine exhaust gas cooling and purification device according to claim 4, characterized in that: Fins penetrating through the inside and outside are arranged on the side wall of the box body. A clamping groove matching with the fins is arranged on the second partition plate. A liquid level gauge communicated with the box body is arranged outside the box body.

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