Circulating air heating and spraying device

Abstract

The utility model belongs to the technical field of environment test devices, and discloses a circulating air heating and spraying device which comprises a cabinet body, a cabinet door is hinged to the front face of the cabinet body, a water pump and a spraying controller are fixedly installed on the right side of the cabinet body, and a water pipe is fixedly installed at the drainage end of the water pump. And the other end of the water pipe is branched into a plurality of branch pipes and is fixedly provided with spray nozzles. According to the circulating air heating and spraying device, the temperature is monitored in real time through the temperature monitor, air circulation is driven through the anti-explosion centrifugal fan, and after air is heated through the multiple sets of electric heating pipes in the furnace body, a salt solution is evenly sprayed to the surface of a silencer workpiece through the accurately-controlled spraying system; therefore, the corrosion resistance test of the silencer workpiece under the extremely high temperature and marine environment is realized; the device not only has the characteristics of efficient heating, uniform spraying and strict safety protection, but also is compact in structure, convenient to maintain and suitable for being used under various severe environment conditions.

Description

Technical Field

[0001] This utility model relates to the field of environmental testing equipment technology, specifically a circulating air heating spray device. Background Technology

[0002] As a key component of a vehicle's exhaust system, the automotive muffler must withstand not only high temperatures, high pressures, and vibrations under complex operating conditions, but also various harsh environments. Especially in the humid and hot marine atmosphere, the combined effects of high temperature, high humidity, and high salt spray can severely impact the material properties and structural integrity of the muffler. Chloride ion corrosion in salt spray environments accelerates the corrosion of metallic materials, while humid and hot conditions further exacerbate this corrosion process, thus shortening the muffler's service life.

[0003] Currently, silencer performance testing is primarily conducted in ideal laboratory environments, which cannot accurately reproduce the real-world operating conditions of a humid and hot marine atmosphere. This leads to discrepancies between test results and practical applications, making it difficult to accurately assess the silencer's high-temperature resistance and corrosion resistance. Therefore, conducting high-temperature tests under humid and hot marine atmospheric conditions is of great significance. It can not only verify the silencer's performance under extreme conditions but also provide crucial data support for product optimization.

[0004] However, conducting high-temperature tests on silencers in a humid and hot marine atmosphere presents numerous technical challenges:

[0005] 1. The test equipment must have strong corrosion resistance to withstand the erosion of a high salt spray environment;

[0006] 2. The device must ensure uniform and efficient air heating under high humidity conditions, while avoiding heating element failure;

[0007] 3. The device must have reliable safety and adaptability to ensure long-term stable operation. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a circulating air heating spray device, which at least has the advantage of high-temperature corrosion resistance testing of silencers, thus solving the aforementioned problems.

[0009] To achieve the above-mentioned purpose of high-temperature corrosion resistance testing of silencers, this utility model provides the following technical solution: a circulating air heating spray device, including a cabinet, a cabinet door hinged to the front of the cabinet, a water pump and a spray controller fixedly installed on the right side of the cabinet, a water pipe fixedly installed at the drain end of the water pump, and the other end of the water pipe branching into multiple branch pipes and fixedly installed with spray nozzles.

[0010] An explosion-proof centrifugal fan, a furnace body, and an electrical controller are fixedly installed on the left side of the cabinet. The exhaust end of the explosion-proof centrifugal fan is connected to the air inlet end of the furnace body. A stainless steel pipe is fixedly installed at the air outlet end of the furnace body. The other end of the stainless steel pipe branches into multiple branch pipes and a temperature monitor is fixedly installed thereon. A silencer is detachably connected to the air outlet end of the temperature monitor through a pipe. Adjacent silencer components are connected by a threaded connection pipe. The bottom of the lowest silencer component is connected to the air inlet end of the explosion-proof centrifugal fan.

[0011] Preferably, a water tank is fixedly installed on the inner bottom wall of the cabinet, a conical cover is clamped to the inner wall of the water tank by a boss, a mesh plate is clamped to the inner wall of the conical cover, and the pumping end of the water pump is inserted into the water tank.

[0012] Preferably, the spray controller is connected to the water pump via signal, and the explosion-proof centrifugal fan, furnace body, and temperature monitor are connected to the electrical controller via signal.

[0013] Preferably, the furnace body adopts a double-layer hollow cylindrical structure, with the outer layer being an aluminum silicate fiber insulation layer and the inner layer being made of S heat-resistant stainless steel; a heating cavity is formed between the outer and inner layers, and multiple sets of U-shaped electric heating tubes are arranged in a spiral array within the heating cavity.

[0014] Preferably, the temperature monitor includes a K-type thermocouple and an infrared temperature sensor, and is embedded in the outlet wall of the stainless steel pipe.

[0015] Preferably, the stainless steel pipe is covered with a ceramic fiber insulation layer, and the furnace body and the surface of the stainless steel pipe are also coated with an anti-corrosion coating.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. This circulating air heating spray device uses a temperature monitor to monitor the temperature in real time and drives the air circulation through an explosion-proof centrifugal fan. After the air is heated by multiple sets of electric heating tubes in the furnace, the salt solution is evenly sprayed onto the surface of the silencer workpiece through a precisely controlled spray system, thereby realizing the corrosion resistance test of the silencer workpiece under extreme high temperature and marine environment. This device not only has the characteristics of efficient heating, uniform spraying and strict safety protection, but also has a compact structure, is easy to maintain, and is suitable for use under various harsh environmental conditions.

[0018] 2. This circulating air heating spray device, after setting the target heating temperature through the electrical controller, starts the explosion-proof centrifugal fan, allowing air to circulate into the heating chamber inside the furnace through stainless steel pipes; the heating chamber is equipped with multiple sets of spirally arranged electric heating tubes to achieve efficient and uniform heating; on the spray side, the water pump draws the salt solution from the water tank, and under the control of the spray controller, the seawater is evenly sprayed onto the outer surface of the silencer workpiece in the form of dense droplets through the spray nozzles, simulating actual salt spray and cooling conditions.

[0019] 3. This device also has the following advantages:

[0020] ① High-efficiency heating: It adopts multiple sets of electric heating tubes and a precise temperature control system to achieve rapid and uniform heating;

[0021] ② Strong corrosion resistance: Key components are made of 316L stainless steel with anti-corrosion treatment, and can operate for a long time in high salt spray environment.

[0022] ③ Strong environmental adaptability: The device can operate stably in environments with temperatures ranging from 0℃ to 70℃ and relative humidity from 40% to 100%, meeting the requirements for use in outdoor exposed sites.

[0023] ④ Safe and reliable: The electrical controller has over-temperature power-off and leakage protection functions, and is equipped with warning signs to ensure the safety of equipment operation and personnel.

[0024] ⑤ Easy to maintain: The components have a reasonable structure, making them easy to disassemble and maintain. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the left side of this utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of the right side of this utility model;

[0027] Figure 3 This is a schematic diagram of the structure of this utility model after the cabinet body has been removed;

[0028] Figure 4 This is an exploded structural diagram of the water tank and cone cover of this utility model;

[0029] Figure 5 This is a schematic diagram illustrating the principle of this utility model.

[0030] In the diagram: 1. Cabinet body; 2. Cabinet door; 3. Water tank; 4. Boss; 5. Conical cover; 6. Mesh plate; 7. Water pump; 8. Water pipe; 9. Spray nozzle; 10. Explosion-proof centrifugal fan; 11. Furnace body; 12. Stainless steel pipe; 13. Temperature monitor; 14. Silencer component; 15. Spray controller; 16. Electrical controller; 17. Connecting pipe. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. 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.

[0032] Please see Figure 1-3 A circulating air heating spray device includes a cabinet 1, a cabinet door 2 hinged to the front of the cabinet 1, a water pump 7 and a spray controller 15 fixedly installed on the right side of the cabinet 1, the spray controller 15 being signal connected to the water pump 7, a water pipe 8 fixedly installed at the drain end of the water pump 7, and the other end of the water pipe 8 branching into multiple branch pipes and fixedly installed with spray nozzles 9.

[0033] Please see Figure 4 A water tank 3 is fixedly installed on the inner bottom wall of the cabinet 1. A conical cover 5 is clamped on the inner wall of the water tank 3 through a boss 4. A mesh plate 6 is clamped on the inner wall of the conical cover 5. The water pump 7 is inserted into the water tank 3. The water tank 3 is mainly used to store a 5% salt solution. The water tank 3 is also equipped with an ultrasonic level sensor and a low water level protection switch.

[0034] Please see Figure 5 An explosion-proof centrifugal fan 10, a furnace body 11, and an electrical controller 16 are fixedly installed on the left side of the cabinet 1. The explosion-proof centrifugal fan 10, the furnace body 11, and the temperature monitor 13 are connected to the electrical controller 16. The electrical controller 16 has a built-in leakage protection module, an over-temperature power-off protection module, and a warning sign. When the detected temperature exceeds the set threshold, it triggers an audible and visual alarm and cuts off the heating power supply to ensure the safe operation of the equipment and the safety of personnel.

[0035] The furnace body 11 adopts a double-layer hollow cylindrical structure. The outer layer is an aluminum silicate fiber insulation layer, and the inner layer is made of 310S heat-resistant stainless steel. A heating cavity is formed between the outer and inner layers, and multiple sets of U-shaped electric heating tubes are arranged in a spiral array in the heating cavity.

[0036] Please see Figure 3 The exhaust end of the explosion-proof centrifugal fan 10 is connected to the air inlet end of the furnace body 11. A stainless steel pipe 12 is fixedly installed at the air outlet end of the furnace body 11. The stainless steel pipe 12 is covered with a ceramic fiber insulation layer. The surfaces of the furnace body 11 and the stainless steel pipe 12 are also coated with an anti-corrosion coating. The other end of the stainless steel pipe 12 branches into multiple branches and a temperature monitor 13 is fixedly installed thereon. The temperature monitor 13 includes a K-type thermocouple and an infrared temperature sensor, and is embedded in the pipe wall at the air outlet end of the stainless steel pipe 12.

[0037] Please see Figure 3The outlet of the temperature monitor 13 is detachably connected to a silencer component 14 via a pipe. Two adjacent silencer components 14 are connected by a threaded connecting pipe 17. The bottom of the lowest silencer component 14 is connected to the air inlet of the explosion-proof centrifugal fan 10.

[0038] Working principle: During use, the temperature is monitored in real time by a temperature monitor 13, and the air is circulated by an explosion-proof centrifugal fan 10. After being heated by multiple sets of electric heating tubes in the furnace body 11, the air is evenly sprayed onto the surface of the silencer workpiece 14 through a precisely controlled spraying system, thereby realizing the corrosion resistance test of the silencer workpiece 14 in extreme high temperature and marine environment. This device not only has the characteristics of efficient heating, uniform spraying and strict safety protection, but also has a compact structure, is easy to maintain, and is suitable for use under various harsh environmental conditions.

[0039] After the target heating temperature is set by the electrical controller 16, the explosion-proof centrifugal fan 10 is started, so that the air is circulated into the heating chamber inside the furnace body 11 through the stainless steel pipe 12. Multiple sets of spirally arranged electric heating tubes are arranged in the heating chamber to achieve efficient and uniform heating. On the spray side, the water pump 7 draws the salt solution from the water tank 3 and controls the spray controller 15 to spray seawater evenly on the outer surface of the silencer workpiece 14 in the form of dense droplets through the spray nozzle 9 to simulate the actual salt spray and cooling conditions.

[0040] In summary, this device also has the following advantages:

[0041] ① High-efficiency heating: It adopts multiple sets of electric heating tubes and a precise temperature control system to achieve rapid and uniform heating;

[0042] ② Strong corrosion resistance: Key components are made of 316L stainless steel with anti-corrosion treatment, and can operate for a long time in high salt spray environment.

[0043] ③ Strong environmental adaptability: The device can operate stably in environments with temperatures ranging from 0℃ to 70℃ and relative humidity from 40% to 100%, meeting the requirements for use in outdoor exposed sites.

[0044] ④ Safe and reliable: The electrical controller has over-temperature power-off and leakage protection functions, and is equipped with warning signs to ensure the safety of equipment operation and personnel.

[0045] ⑤ Easy to maintain: The components have a reasonable structure, making them easy to disassemble and maintain.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A circulating air heating and spraying device comprising a cabinet (1), the front of the cabinet (1) is hinged with a cabinet door (2), characterized in that: The right side of the cabinet (1) is fixedly installed with a water pump (7) and a spray controller (15), the water outlet end of the water pump (7) is fixedly installed with a water pipe (8), the other end of the water pipe (8) is bifurcated into multiple branch pipes and is fixedly installed with spray nozzles (9); The left side of the cabinet (1) is fixedly installed with an explosion-proof centrifugal fan (10), a furnace body (11) and an electric controller (16), the air outlet end of the explosion-proof centrifugal fan (10) is in communication with the air inlet end of the furnace body (11), the air outlet end of the furnace body (11) is fixedly installed with a stainless steel pipeline (12), the other end of the stainless steel pipeline (12) is bifurcated into multiple branch pipes and is fixedly installed with temperature monitors (13), the air outlet end of the temperature monitor (13) is detachably connected with a silencer workpiece (14) through a pipeline, adjacent two silencer workpieces (14) are threadedly connected through a connecting pipe (17), and the bottom of the lowermost silencer workpiece (14) is in communication with the air inlet end of the explosion-proof centrifugal fan (10).

2. A recirculating air heating and spraying device according to claim 1, wherein: The inner bottom wall of the cabinet (1) is fixedly installed with a water tank (3), the inner wall of the water tank (3) is clamped with a conical cover (5) through a boss (4), the inner wall of the conical cover (5) is clamped with a mesh plate (6), and the water suction end of the water pump (7) penetrates into the water tank (3).

3. A circulating air heating and spraying device according to claim 1, wherein: The spray controller (15) is signal connected with the water pump (7), and the explosion-proof centrifugal fan (10), the furnace body (11) and the temperature monitor (13) are signal connected with the electric controller (16).

4. A circulating air heating and spraying device according to claim 1, wherein: The furnace body (11) adopts a double-layer hollow cylindrical structure, the outer layer is an aluminum silicate fiber heat preservation layer, and the inner layer is made of 310S heat-resistant stainless steel; a heating cavity is formed between the outer layer and the inner layer, and multiple groups of U-shaped electric heating pipes are arranged in a spiral array in the heating cavity.

5. A circulating air heating and spraying device according to claim 1, wherein: The temperature monitor (13) comprises a K-type thermocouple and an infrared temperature measurement sensor and is embedded in the air outlet end pipeline wall of the stainless steel pipeline (12).

6. A circulating air heating and spraying device according to claim 1, wherein: The stainless steel pipeline (12) is externally coated with a ceramic fiber heat preservation layer, and the furnace body (11) and the stainless steel pipeline (12) are further sprayed with a corrosion-resistant coating.

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