A nozzle device

Abstract

The application belongs to the technical field of cooling, and specifically provides a nozzle device, which comprises a nozzle joint and a nozzle head; the nozzle joint is provided with a conveying channel; the nozzle joint comprises a nozzle main body, a partition plate, a first expansion air chamber, a rotary supercharging air channel and a second expansion air chamber; the nozzle main body comprises a first structural layer, a second structural layer and a third structural layer; a central air channel is arranged at the central part of the first structural layer; the rotary supercharging air channel is arranged between the first structural layer and the second structural layer; the first expansion air chamber is arranged between the second structural layer and the third structural layer; the second expansion air chamber is throughly arranged with the central air channel; the partition plate and the nozzle head are arranged on the two ends of the nozzle main body respectively; a third expansion air chamber is arranged in the nozzle head and throughly arranged with the central air channel. The application can effectively solve the problems of the low-temperature cold air nozzle being easily damaged by iron filings splashing during the machining process, the cold air being easily frozen and the cold-keeping effect being poor during the cold air transmission process, the outlet temperature of the cold air being unstable, and the noise being large.

Description

Technical Field

[0001] This invention belongs to the field of cooling technology and relates to a nozzle device. Background Technology

[0002] During machining, friction between the cutting tool and the workpiece releases a significant amount of heat, which not only reduces tool life but can also cause deformation of thin-walled workpieces. To mitigate this, traditional cast-type cutting fluids are typically used for cooling. However, the cost of recycling and treating waste fluids is high, and the environmental pollution risk is substantial. Low-temperature cold air green machining technology, using compressed air cooling (typically reaching -60°C), effectively reduces tool temperature and wear, achieving green manufacturing. Currently, there are two main methods for transmitting compressed air to the tool tip: the first is to directly transmit compressed air to the tool tip through the machine tool's internal cooling channels, but this method requires high-performance machine tools; the second is to directly deliver compressed gas to the tool tip through external pipelines and nozzles, a more flexible and easier-to-implement method.

[0003] The cooling effect of compressed air depends on the distance between the nozzle and the blade tip. To ensure the cooling effect, the nozzle outlet and the spray angle need to be as close as possible to the blade tip. However, traditional plastic nozzles are easily damaged by iron filings and cannot meet the requirements. Ordinary metal nozzles are prone to icing on the nozzle surface due to the high thermal conductivity of metal, which renders them unusable. In addition, conventional nozzles have a high gas flow rate and loud noise during use because the internal pipeline is directly connected to the outside atmosphere, which is not user-friendly. At the same time, the temperature sensor of cold air jet machine is mostly located at the compressor outlet. The low-temperature airflow is transported over a long distance through the pipeline to the nozzle, and there is no effective means to monitor its temperature change. Summary of the Invention

[0004] The present invention aims to provide a nozzle device that can simultaneously achieve temperature measurement, noise reduction and antifreeze effects.

[0005] This invention provides a nozzle device, including a nozzle connector and a nozzle head;

[0006] The nozzle connector is provided with a conveying channel for cold air delivery, and one end of the nozzle connector is connected to an external cold air duct, while a nozzle is installed on the other end of the nozzle connector; the cold air delivered by the external cold air duct is output through the conveying channel and the nozzle in sequence.

[0007] The nozzle connector includes a nozzle body and a baffle plate, a first expansion chamber, a rotary booster air passage, and a second expansion chamber disposed on the nozzle body;

[0008] The nozzle body includes a first structural layer, a second structural layer, and a third structural layer arranged sequentially from the inside to the outside; a central air passage is provided at the center of the first structural layer; a rotary pressurizing air passage is provided between the first structural layer and the second structural layer; a first expansion chamber is provided between the second structural layer and the third structural layer; the second expansion chamber is located on the side of the nozzle body near the nozzle head, and the second expansion chamber is connected to the central air passage.

[0009] The baffle and the nozzle are respectively disposed at two ends of the nozzle body, which are spaced apart from each other along the central axis. A central hole that communicates with the channel is provided in the center of the baffle, and multiple sets of air holes are arranged in a circular array along the central hole. Each set of air holes has multiple sets arranged in a sequentially spaced manner from the central hole to the periphery of the baffle.

[0010] The nozzle is provided with a third expansion chamber and a nozzle that are interconnected, and the third expansion chamber is interconnected with the central air passage.

[0011] Furthermore, the first expansion chamber is configured as a spiral structure arranged along the central axis of the central air passage.

[0012] Furthermore, a vacuum chamber is also provided on the third structural layer;

[0013] The vacuum chamber is arranged in a ring within the third structural layer.

[0014] Furthermore, a support plate is also installed in the vacuum chamber.

[0015] Furthermore, the nozzle is connected to the nozzle body via a clamp.

[0016] Furthermore, at least one sealing ring is provided between the nozzle body and the clamp, and between the clamp and the nozzle head.

[0017] Furthermore, each air hole is configured as a tapered hole structure that increases in size from the direction away from the nozzle body to the direction closer to the nozzle body.

[0018] Furthermore, the nozzle is configured as a hemispherical structure, with hemispherical grooves matching the hemispherical shape of the nozzle on the nozzle body and clamp.

[0019] As a further embodiment of the present invention, the nozzle device further includes a temperature probe;

[0020] The temperature probe is installed on the nozzle connector and is used to detect the temperature of the cold air delivered to the nozzle head through the nozzle connector.

[0021] Furthermore, a reserved interface for installing a temperature probe is provided on the nozzle body, and the reserved interface passes through the nozzle body and the second expansion chamber.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The nozzle device provided by the present invention can effectively solve the problems of low temperature cold air nozzle being easily damaged due to iron filings splashing during machining, cold air being easily iced during transmission and having poor cold preservation effect, as well as unstable cold air outlet temperature and high noise.

[0024] (2) This invention has the characteristics of high versatility, wide applicability, low labor intensity, simple operation, safety and reliability; it effectively solves the problems of easy damage to low temperature cold air nozzles caused by iron filings splashing during machining, easy icing and poor cold air insulation effect during cold air transmission, unstable cold air outlet temperature and high noise, and realizes stable and efficient operation of low temperature cold air equipment, significantly improves the cutting tip cooling effect, accurately controls the low temperature cold air processing temperature, and significantly reduces the noise at the processing site.

[0025] In addition to the objectives, features, and advantages described above, the present invention has other objectives, features, and advantages. The invention will now be described in further detail with reference to the figures. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0027] Figure 1 This is an isometric cross-sectional view of a nozzle device according to an embodiment of the present invention;

[0028] Figure 2 yes Figure 1 This is a schematic diagram of the front view section;

[0029] Figure 3 This is a cross-sectional view of the application of a temperature-measuring, antifreeze, and noise-reducing nozzle device in an embodiment of the present invention (the arrows in the figure indicate the airflow direction).

[0030] Figure 4 yes Figure 1 A cross-sectional view of the central nozzle.

[0031] in:

[0032] 1. Nozzle connector, 2. Temperature probe, 3. Nozzle head, 4. Clamp, 5. Sealing ring, 1.1. Nozzle body, 1.2. Partition plate, 1.3. First expansion chamber, 1.4. Rotary pressurizing air passage, 1.5. Second expansion chamber, 1.6. Reserved interface, 1.7. Vacuum chamber, 3.1. Third expansion chamber, 3.2. Nozzle. Detailed Implementation

[0033] To make the above-mentioned objectives, features, and advantages of the present invention clearer and easier to understand, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the accompanying drawings of the present invention are all in a simplified form and use non-precise proportions, and are only used to facilitate and clearly assist in illustrating the implementation of the present invention; the "several" mentioned in the present invention are not limited to the specific number shown in the examples in the accompanying drawings; the orientations or positional relationships indicated by terms such as "front," "middle," "rear," "left," "right," "up," "down," "top," "bottom," and "center" mentioned in the present invention are all based on the orientations or positional relationships shown in the accompanying drawings of the present invention, and do not indicate or imply that the device or component referred to must have a specific orientation, nor should they be construed as limitations on the present invention.

[0034] Example:

[0035] See Figures 1 to 4 As shown, the nozzle device provided by the present invention includes a nozzle connector 1, a temperature probe 2, a nozzle 3, and a clamp 4;

[0036] The nozzle connector 1 includes a nozzle body 1.1 and a partition 1.2, a first expansion chamber 1.3, a rotary booster air passage 1.4, a second expansion chamber 1.5, a reserved interface 1.6, and a vacuum chamber 1.7 disposed on the nozzle body 1.1.

[0037] The nozzle body 1.1 includes a first structural layer, a second structural layer, and a third structural layer arranged sequentially from the inside out. A central air passage is provided at the center of the first structural layer. A rotary pressurizing air passage 1.4 is provided between the first and second structural layers. A first expansion chamber 1.3 is provided between the second and third structural layers. The first expansion chamber 1.3 is configured to be spirally arranged along the central axis of the central air passage. The second expansion chamber 1.5 is provided on the side of the nozzle body 1.1 near the nozzle head 3, and the second expansion chamber 1.5 is connected to the central air passage.

[0038] The partition plate 1.2 and the nozzle 3 are respectively disposed at two ends of the nozzle body 1.1 along its central axis; the partition plate 1.2 is fixedly connected to the nozzle body 1.1, and the nozzle 3 is connected to the nozzle body 1.1 by a clamp 4;

[0039] The partition 1.2 is disposed on one end of the nozzle body 1.1, and a central hole communicating with the channel is provided in the center of the partition 1.2, and multiple sets of air holes are arranged in a circumferential array along the central hole; each set of air holes has multiple air holes arranged sequentially and spaced apart from the central hole to the periphery of the partition 1.2, and each air hole is a tapered hole structure that increases in size from the direction away from the nozzle body 1.1 to the direction closer to the nozzle body 1.1, so as to effectively reduce the cold air flow rate and achieve a preliminary noise reduction effect;

[0040] The nozzle 3 is provided with a third expansion chamber 3.1 and a nozzle 3.2 that are interconnected. The third expansion chamber 3.1 is interconnected with the central air passage.

[0041] The cold air delivered through the external cold air duct is delivered to the first expansion chamber 1.3 through the air holes of the partition 1.2. The spiral structure of the first expansion chamber 1.3 further slows down the flow rate of the cold air.

[0042] The cold air from the first expansion chamber 1.3 is delivered from bottom to top (i.e. from near the nozzle 3 to near the partition 1.2) through the rotary pressurizing duct 1.4, so as to increase the pressure of the gas through the narrower rotary pressurizing duct 1.4 compared to the first expansion chamber 1.3 and further slow down the gas flow rate through the rotary structure.

[0043] After passing through the rotary pressurized air duct 1.4, the cold air enters the second expansion chamber 1.5 to further slow down the gas flow rate in order to meet the noise reduction requirements.

[0044] The cold air passing through the second expansion chamber 1.5 is output through nozzle 3.

[0045] Preferably, the first structural layer and the second structural layer are fixedly connected to each other, and the rotary booster airway 1.4 is provided with two sets of rotary booster airways 1.4 symmetrically arranged along the central airway. The two ends of each set of rotary booster airways 1.4 are respectively connected to the two ends of the central airway.

[0046] Preferably, in order to achieve a sealed connection between the nozzle body 1.1 and the clamp 4 and between the clamp 4 and the nozzle head 3, at least one sealing ring 5 is provided between the nozzle body 1.1 and the clamp 4 and between the clamp 4 and the nozzle head 3.

[0047] Preferably, in order to meet the requirement of measuring the temperature of the output gas, a reserved interface 1.6 is also provided on the nozzle body 1.1, and the reserved interface 1.6 passes through the nozzle body 1.1 and the second expansion chamber 1.5.

[0048] Preferably, in order to meet the antifreeze and cold preservation requirements of the nozzle device, a vacuum chamber 1.7 is also provided on the third structural layer.

[0049] Furthermore, to enhance the overall strength of the nozzle body 1.1, a support plate is also provided inside the vacuum chamber 1.7.

[0050] Preferably, in order to meet the angle adjustment requirements of the nozzle 3 of the nozzle device, the nozzle 3 is configured as a hemispherical structure, and hemispherical grooves matching the hemispherical shape of the nozzle 3 are provided on the nozzle body 1.1 and the clamp 4.

[0051] Preferably, the working principle of the present invention is as follows:

[0052] The temperature probe 2 measures the cold air outlet temperature at the second expansion chamber 1.5 through the reserved interface 1.6. If the measured temperature differs from the set outlet temperature of the low-temperature cold air equipment by more than ±1℃ and less than ±5℃, the data is fed back to the equipment for automatic adjustment. If the measured temperature differs from the set outlet temperature of the low-temperature cold air equipment by more than ±5℃, the equipment alarms. The alarm is lifted after professional personnel have eliminated the factors that cause the excessive temperature deviation due to equipment malfunction. The monitoring deviation value can also be adjusted according to the length of the low-temperature airflow delivery pipeline.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A nozzle device, characterized in that, Includes nozzle connector (1) and nozzle (3); The nozzle connector (1) is provided with a conveying channel for cold air delivery, and one end of the nozzle connector (1) is connected to the external cold air pipeline, and the other end of the nozzle connector (1) is equipped with a nozzle (3); the cold air delivered by the external cold air pipeline is output through the conveying channel and the nozzle (3) in sequence. The nozzle connector (1) includes a nozzle body (1.1) and a baffle (1.2), a first expansion chamber (1.3), a rotary booster air passage (1.4) and a second expansion chamber (1.5) disposed on the nozzle body (1.1). The nozzle body (1.1) includes a first structural layer, a second structural layer and a third structural layer arranged sequentially from the inside to the outside; a central air passage is provided at the center of the first structural layer; a rotary booster air passage (1.4) is provided between the first structural layer and the second structural layer; a first expansion chamber (1.3) is provided between the second structural layer and the third structural layer; the second expansion chamber (1.5) is provided on the side of the nozzle body (1.1) near the nozzle head, and the second expansion chamber (1.5) is connected to the central air passage; The partition (1.2) and the nozzle are respectively disposed at two ends of the nozzle body (1.1) at intervals along its central axis; a central hole communicating with the channel is provided in the center of the partition (1.2) and multiple sets of air holes are arranged in a circumferential array along the central hole; each set of air holes has multiple sets arranged at intervals from the central hole to the periphery of the partition (1.2); The nozzle (3) is provided with a third expansion chamber (3.1) and a nozzle (3.2) that are interconnected. The third expansion chamber (3.1) is interconnected with the central air passage. The cold air delivered by the external cold air duct is delivered to the first expansion chamber (1.3) through the air hole of the partition (1.2). The spiral structure of the first expansion chamber (1.3) further slows down the flow rate of the cold air. The cold air in the first expansion chamber (1.3) is delivered from near the nozzle (3) to near the partition (1.2) through the rotary pressurizing air passage (1.4). The pressure of the gas is increased by the rotary pressurizing air passage (1.4), which is narrower than that of the first expansion chamber (1.3), and the flow rate of the gas is further slowed down by the rotary structure. After passing through the rotary pressurizing air passage (1.4), the cold air enters the second expansion chamber (1.5). The cold air in the second expansion chamber (1.5) is output through the nozzle (3).

2. The nozzle device according to claim 1, characterized in that, The first expansion chamber (1.3) is configured as a spiral structure along the central axis of the central airway.

3. The nozzle device according to claim 1, characterized in that, A vacuum chamber (1.7) is also provided on the third structural layer. The vacuum chamber (1.7) is arranged in a ring within the third structural layer.

4. The nozzle device according to claim 3, characterized in that, A support plate is also installed inside the vacuum chamber (1.7).

5. The nozzle device according to any one of claims 1-4, characterized in that, The nozzle (3) is connected to the nozzle body (1.1) by a clamp (4).

6. The nozzle device according to claim 5, characterized in that, At least one sealing ring is provided between the nozzle body (1.1) and the clamp (4) and between the clamp (4) and the nozzle (3).

7. The nozzle device according to claim 6, characterized in that, The individual air hole is configured as a tapered hole structure that increases in size from the direction away from the nozzle body (1.1) to the direction closer to the nozzle body (1.1).

8. The nozzle device according to claim 6 or 7, characterized in that, The nozzle (3) is configured as a hemispherical structure, and hemispherical grooves matching the hemispherical shape of the nozzle (3) are provided on the nozzle body (1.1) and clamp (4).

9. The nozzle device according to claim 8, characterized in that, It also includes a temperature probe (2); The temperature probe (2) is installed on the nozzle connector (1) and is used to detect the temperature of the cold air delivered to the nozzle (3) through the nozzle connector (1).

10. The nozzle device according to claim 9, characterized in that, A reserved interface (1.6) for installing a temperature probe (2) is also provided on the nozzle body (1.1), the reserved interface (1.6) passing through the nozzle body (1.1) and the second expansion chamber (1.5).

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