Protective mask for agricultural spraying operation

Abstract

The invention provides a protective mask for agricultural spraying operation, which comprises a helmet-type protective mask body and a protective clothing body, the front side of the protective mask body is provided with an eye area and a mouth and nose area, the eye area is a transparent observation window, the mouth and nose area is of a port structure, and the port structure is opened and closed through a mouth and nose cover; an exhaust outlet is formed in the protective cover body, and an exhaust fan device is mounted on the exhaust outlet; the protective clothing body is connected with the protective cover body, an air inlet is formed in the lower portion of the protective clothing body, an exhaust fan device and a filtering device are installed on the air inlet, and the filtering device is detachably installed on the protective clothing body and comprises a channel shell, one end of the channel shell is connected with the air inlet, and the other end of the channel shell is open. A filter cotton piece, an absorbent cotton structure and a filter element structure are sequentially arranged in the channel shell at intervals; the absorbent cotton structure comprises an absorbent cotton layer, a filter plate, a collecting assembly and a water spraying assembly. According to the protective mask, an integrated protective structure is formed by the helmet-type mask body and the garment body, a patient can be prevented from being crushed, the internal ventilation effect is good, and the comfort degree is good.

Description

Technical Field

[0001] This invention relates to the field of pesticide spraying protection, and in particular to a protective face shield for agricultural spraying operations. Background Technology

[0002] During crop growth, regular fertilization or pesticide spraying is necessary to ensure healthy growth. Currently, pesticide spraying on crops is done either manually or mechanically, each with its own advantages and disadvantages. Manual spraying involves a person holding a spray gun to spray the crop from all angles. During this process, pesticides can easily be inhaled by the operator. Therefore, protective measures must be taken to improve operational safety.

[0003] Existing protective equipment generally includes face shields, masks, and protective clothing. However, face shields and masks offer limited protection. Those with poor seals allow pesticides to easily seep into the body through gaps between the shield and the operator, resulting in inhalation. While well-sealed shields offer better protection, they can cause discomfort and heat, leading to pressure sores on the skin and overall poor comfort. Therefore, the structure of existing face shields requires further improvement. Summary of the Invention

[0004] In view of the above, it is necessary to provide a protective face mask for agricultural spraying operations. This face mask has an integrated protective structure consisting of a helmet-style face mask and a body suit, which can prevent pressure injuries to patients and has good internal ventilation and comfort.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A protective face shield for agricultural spraying operations includes a helmet-type protective shield body. The front of the protective shield body has an eye area and a mouth and nose area. The eye area is a transparent observation window, and the mouth and nose area is a through-hole structure that is opened and closed by a mouth and nose cover. The protective shield body is provided with an exhaust port, and an exhaust fan device is installed on the exhaust port.

[0007] It also includes a protective suit body connected to a protective cover, with an air inlet at its lower part. An exhaust fan and a filter are installed on the air inlet. The filter is detachably mounted on the protective suit body and includes a channel shell. One end of the channel shell is connected to the air inlet, and the other end is open. Inside the channel shell, filter cotton sheets, absorbent cotton structures, and filter cartridge structures are arranged sequentially and at intervals. The filter cartridge structure is positioned close to the exhaust fan. The absorbent cotton structure includes an absorbent cotton layer, a filter plate, a collection assembly, and a spray assembly. The absorbent cotton layer is placed on the filter plate, which is located between the absorbent cotton layer and the filter cartridge structure. The collection assembly includes a collection box detachably mounted at the bottom of the channel shell, directly below the absorbent cotton layer and the filter plate, and connected to the interior of the channel shell through a liquid outlet on the channel shell. The liquid outlet opens and closes via a movable flap. The spray assembly... The water assembly includes a water tank, a water outlet drive, a spray pipe, and a lifting drive. The water outlet drive is connected to the water tank and the spray pipe, respectively, and is used to deliver water from the water tank to the spray pipe. The spray pipe is located on the side of the absorbent cotton layer away from the filter plate, parallel to the surface of the absorbent cotton layer and perpendicular to the height direction of the absorbent cotton layer. Several spray holes are spaced apart on the pipe wall facing the absorbent cotton layer. The distance between the spray pipe and the filter plate is less than the thickness of the absorbent cotton layer in its natural state. A push rod is provided on the spray pipe, with the lower end of the push rod located below the spray pipe and facing the liquid outlet. The two ends of the spray pipe are slidably connected to the channel shell, and one end is connected to the movable end of the lifting drive. Under the action of the lifting drive, the spray pipe moves up and down along the height direction of the absorbent cotton layer. As the spray pipe descends, the push rod pushes the movable plate to open the liquid outlet.

[0008] Preferably, the filter cotton sheet, absorbent cotton layer, filter plate, and filter element structure can all be detachably installed on the channel housing.

[0009] Preferably, the filter element structure includes an activated carbon layer and an antibacterial layer.

[0010] Preferably, the movable piece is rotatably mounted on the movable outer frame, and a torsion spring is provided at the rotatable connection. The movable piece closes the liquid outlet under the action of the torsion spring, and rotates downward to open the liquid outlet when it is pushed down by the push rod.

[0011] Preferably, the movable outer frame is mounted on the liquid outlet and is detachably connected to the channel housing.

[0012] Preferably, the nozzle is angled downwards.

[0013] Preferably, the two ends of the spray pipe are slidably mounted on the filter plate via sliders, and are slidably connected to the channel housing via the filter plate.

[0014] Preferably, the end of the spray pipe that is not connected to the lifting drive is connected to the water tank via a flexible hose.

[0015] Preferably, the water outlet drive is a miniature water pump, with the inlet end of the miniature water pump connected to a water tank and the outlet end connected to the spray pipe.

[0016] Preferably, a carbon dioxide sensor is installed inside the protective cover. The carbon dioxide sensor is electrically connected to a controller module, which is used to monitor the carbon dioxide concentration inside the protective cover and send the monitored value to the controller module. The controller module is communicatively connected to an alarm module.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] This invention features an integrated protective structure comprised of a helmet-style protective cover and a protective suit, which can be worn over the patient's upper body. This wearing method minimizes pressure on the operator, reducing the risk of pressure sores and providing better patient comfort. Secondly, an exhaust fan at the air inlet draws air into the protective structure, while an exhaust fan at the air outlet extracts the gas, allowing for convection within the structure. This facilitates breathing and, to some extent, cools the operator, improving comfort. Furthermore, the invention incorporates a filter at the air inlet. This filter removes dust from the air using filter pads, absorbs and dissolves pesticides carried in the air using absorbent cotton layers, and further purifies the air using a filter element. This ensures better air quality entering the protective structure, resulting in enhanced protection. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure when the filter device is not installed.

[0021] Figure 3 This is a schematic diagram of the internal structure of the filtration device.

[0022] Figure 4 yes Figure 3 A schematic diagram of the structure when the push rod pushes the movable plate to open the liquid outlet.

[0023] Figure 5 yes Figure 3 Exploded view of each detachable component during disassembly.

[0024] Explanation of main component symbols

[0025] In the diagram: 1. Protective cover, 1.1. Eye area, 1.2. Mouth and nose area, 1.3. Vent, 2. Exhaust fan, 3. Protective clothing, 4. Exhaust fan, 5. Channel shell, 5.1. Liquid outlet, 5.2. Movable plate, 5.3. Filter cotton sheet, 6. Absorbent cotton structure, 7. Filter plate, 7.1. Absorbent cotton layer, 7.2. Spray pipe, 7.3. Hose, 7.4. Water outlet drive, 7.5. Water tank, 7.6. Push rod, 7.7. Lifting drive, 7.8. Slider, 7.9. Collection assembly, 8. Filter element structure, 9.1. Activated carbon layer, 9.2.

[0026] The following detailed description, in conjunction with the accompanying drawings, will further illustrate the present invention. Detailed Implementation

[0027] Please see Figures 1 to 5 In a preferred embodiment of the present invention, a protective face shield for agricultural spraying operations includes a helmet-type protective cover body 1 and a protective clothing body 3.

[0028] The protective cover 1 has an eye area 1.1 and a mouth and nose area 1.2 on its front side. The eye area 1.1 is a transparent observation window, and the mouth and nose area 1.2 is a through-hole structure that is opened and closed by a mouth and nose cover. The protective cover 1 is provided with an exhaust port 1.3, and an exhaust fan device 2 is installed on the exhaust port 1.3.

[0029] The protective suit 3 is connected to the protective cover 1, and has an air inlet at its lower part. An exhaust fan 4 and a filter device are installed on the air inlet. The filter device is detachably installed on the protective suit 3 and includes a channel shell 5. One end of the channel shell 5 is connected to the air inlet, and the other end is open. Filter cotton sheets 6, absorbent cotton structures 7, and filter element structures 9 are arranged sequentially and at intervals inside the channel shell 5. The filter element structure 9 is located near the exhaust fan 4. The absorbent cotton structure 7 includes an absorbent cotton layer 7.2, a filter plate 7.1, a collection assembly 8, and a water spray assembly. The absorbent cotton layer 7.2... The filter plate 7.1 is positioned on the filter plate 7.1, which is located between the absorbent cotton layer 7.2 and the filter element structure 9. The collection assembly 8 includes a collection box, which is detachably installed at the bottom of the channel housing 5 and located directly below the absorbent cotton layer 7.2 and the filter plate 7.1. The collection box is connected to the interior of the channel housing 5 through a liquid outlet 5.1 on the channel housing 5, which is opened and closed by a movable piece 5.2. The water spray assembly includes a water tank 7.6, a water outlet drive component 7.5, a spray pipe 7.3, and a lifting drive component 7.8. The water outlet drive component 7.5 is connected to the water tank 7.6. 6. A spray pipe 7.3 is connected to deliver water from the water tank 7.6 to the spray pipe 7.3. The spray pipe 7.3 is located on the side of the absorbent cotton layer 7.2 facing away from the filter plate 7.1, parallel to the surface of the absorbent cotton layer 7.2 and perpendicular to its height. Several spray holes (not shown in the figure) are spaced apart on the pipe wall of the spray pipe 7.3 facing the absorbent cotton layer 7.2; that is, the spray holes are spaced apart along the length of the spray pipe 7.3. The distance between the spray pipe 7.3 and the filter plate 7.1 is less than the thickness of the absorbent cotton layer 7.2 in its natural state. That is, the spray pipe 7.3 is arranged to squeeze the absorbent cotton layer 7.2; a push rod 7.7 is provided on the spray pipe 7.3, the lower end of the push rod 7.7 is located below the spray pipe 7.3 and is positioned directly opposite the liquid outlet 5.1; the two ends of the spray pipe 7.3 are slidably connected to the channel housing 5, one end of which is connected to the movable end of the lifting drive 7.8. Under the action of the lifting drive 7.8, the spray pipe 7.3 moves up and down along the height direction of the absorbent cotton layer 7.2. As the spray pipe 7.3 descends, the push rod 7.7 pushes the movable piece 5.2 to open the liquid outlet 5.1.

[0030] The present invention, through the arrangement of a helmet-type protective cover 1 and a protective clothing 3, forms a one-piece protective structure that can cover the patient's head and upper body. Its wearable method avoids the mask causing pressure sores on the patient's face. Furthermore, the protective structure of the present invention, through the arrangement of an exhaust fan device 2 and an exhaust fan device 4, allows air circulation inside the protective structure, facilitates the user's breathing, and provides a certain degree of coolness to the user, thereby improving the comfort of using the present invention.

[0031] In this invention, a helmet-style protective cover 1 is fitted over the user's head and neck, without being attached to the user. The protective cover 1 is secured to the user's head via a built-in head suspension frame 1.4 and a chin strap 1.5. A transparent observation window provides the user's field of vision, and the mouth and nose area 1.2 is the user's breathing area when not wearing protection. This area is sealed with a mouth and nose cover when protection is needed, thus creating a relatively sealed enclosed space. An exhaust fan 4 draws outside air into the protective structure, while an exhaust fan 2 removes air from the structure. This extraction and exhaust method creates airflow within the protective structure, facilitating breathing while preventing the user from feeling stuffy due to tight clothing, resulting in better comfort. In this embodiment, to ensure better airflow within the protective structure, the exhaust fan 2 is preferably positioned at the top of the protective cover 1, and the exhaust fan 4 is positioned at the bottom of the protective suit 3, preferably on the front.

[0032] In this invention, the air drawn in by the exhaust fan 4 is air filtered by a filter device. This ensures that the air inhaled by the user inside the protective structure is relatively fresh and contains very little pesticide, thus providing excellent protection. Specifically, the filter device first filters out dust from the air using filter cotton sheets 6, then filters out pesticides by adsorbing them using absorbent cotton structures 7, and finally purifies the air using filter element structures 9. The air then enters the protective structure through the air inlet under the action of the exhaust fan 4.

[0033] In this embodiment, the filter cotton sheet 6 includes a cotton sheet frame and filter cotton. The filter cotton is installed on the cotton sheet frame, and the filter cotton sheet 6 is installed on the channel housing 5 through the cotton sheet frame. In order to facilitate its replacement, it is preferable to make the filter cotton sheet 6 detachably installed on the channel housing 5. In this way, when the filtration effect of the filter cotton sheet 6 is not good after a period of use, the filtration effect can be improved by replacing it with a new filter cotton sheet 6.

[0034] In this invention, the filter element structure 9 is used to purify air. In this embodiment, the filter element structure 9 includes an activated carbon layer 9.1 and an antibacterial layer 9.2. The activated carbon layer 9.1 is used to adsorb and purify air, and the antibacterial layer 9.2 has an antibacterial effect, reducing bacteria in the air. It is preferably a silver oxide compound. Similarly, in order to enable the device to be reused and the filter element structure 9 to be replaced, the filter element structure 9 can also be detachably installed on the channel housing 5.

[0035] In this invention, the absorbent cotton structure 7, through its absorbent cotton layer 7.2, allows pesticide components in the air passing by to be adsorbed, thereby reducing the amount of pesticide components entering the protective structure. Specifically, in the absorbent cotton structure 7 of this invention, the absorbent cotton layer 7.2 is an absorbent sponge structure. This absorbent cotton layer 7.2 is kept moist by spraying water onto it through a water spraying component, and can also be squeezed out by the water spraying component to the collection component 8 below it. This facilitates the continuous adsorption of pesticide components in the air by the absorbent cotton layer 7.2. In this invention, the absorbent cotton layer 7.2 is mounted on the filter plate 7.1. The spray pipe 7.3 of the water spray assembly abuts against the absorbent cotton layer 7.2 and can move up and down under the action of the lifting drive 7.8. During this lifting process, the spray pipe 7.3, in conjunction with the filter plate 7.1, can squeeze the absorbent cotton layer 7.2 from top to bottom. Under the pressure, the liquid in the absorbent cotton layer 7.2 flows downward into the collection assembly 8. When the spray pipe 7.3 moves from bottom to top, the spray nozzles on it can spray water from the water tank 7.6 onto the absorbent cotton layer 7.2 under the action of the water outlet drive 7.5, thus re-wetting the absorbent cotton layer 7.2 and facilitating its re-absorption of pesticide components from the air passing through it. Therefore, in this invention, the water spray assembly not only plays the role of spraying water to wet the cotton layer but also removes the liquid containing pesticides adsorbed by the absorbent cotton layer 7.2.

[0036] In this embodiment, to facilitate water spraying from the spray pipe 7.3 onto the absorbent cotton layer 7.2, the spray holes are preferably angled downwards. This prevents the spray holes from being blocked by the absorbent cotton layer 7.2 and avoids water from flowing back into the spray pipe 7.3 when squeezed from the absorbent cotton layer 7.2. Furthermore, the downward-angled spraying of water from the spray pipe 7.3 ensures thorough spraying of the absorbent cotton layer 7.2. Further, both ends of the spray pipe 7.3 are slidably mounted on the filter plate 7.1 via sliders 7.9, and are slidably connected to the channel housing 5 via the filter plate 7.1; that is, the spray pipe 7.3 slides on the filter plate 7.1. The end of the spray pipe 7.3 not connected to the lifting drive component 7.8 is connected to the water tank 7.6 via a flexible hose 7.4, facilitating the vertical movement of the spray pipe 7.3. The water outlet drive component 7.5 is a miniature water pump. The inlet end of the miniature water pump is connected to the water tank 7.6, and the outlet end is connected to the spray pipe 7.3, specifically through a corrugated hose 7.4. The water tank 7.6 and the water outlet drive component 7.5 are located on the top of the channel housing 5. The lifting drive component 7.8 is preferably a motor-screw assembly. The screw is rotatably installed inside the channel housing 5, with one end passing through the channel housing 5 and connected to the motor. A slider 7.9 is threaded into the screw. Thus, the motor drives the screw to rotate, causing the slider 7.9 to rise and fall on the filter plate 7.1, which in turn drives the spray pipe 7.3 to rise and fall. Similarly, to facilitate the reusability of the absorbent cotton structure 7, both the absorbent cotton layer 7.2 and the filter plate 7.1 can be detachably installed on the channel housing 5, preferably through the top of the channel housing 5. The filter plate 7.1 has a slide rail, and the slider 7.9 is slidably installed on the filter plate 7.1 through the slide rail. The slider 7.9 and the filter plate 7.1 are also detachably connected. For example, when the slide rail is a raised strip structure, the slider 7.9 has a groove structure that connects the upper and lower parts. In this way, when the filter plate 7.1 drives the absorbent cotton layer 7.2 to be detached from the channel housing 5, the filter plate 7.1 can also be separated from the slider 7.9.

[0037] In this invention, the liquid on the absorbent cotton layer 7.2 is squeezed down and flows into the outlet 5.1. When the movable plate 5.2 is not open, the water is collected at the outlet 5.1. Therefore, to prevent water from flowing out, the outlet 5.1 has a concave structure. When the spray pipe 7.3 moves down to a certain extent, the movable plate 5.2 of the outlet 5.1 can be abutted and pushed open by the push rod 7.7, and the water at the outlet 5.1 flows into the collection box for collection. When the push rod 7.7 moves up and disengages from the movable plate 5.2, the movable plate 5.2 closes the outlet 5.1. Without being driven, the movable plate 5.2 does not open the outlet 5.1. Therefore, the liquid collected in the collection box will not flow back out from the outlet 5.1. In this embodiment, the movable piece 5.2 is rotatably mounted on the movable outer frame 5.3, and a torsion spring is provided at the rotatable connection. Under the action of the torsion spring, the movable piece 5.2 closes the liquid outlet 5.1, and when it is pushed downward by the push rod 7.7, it rotates downward to open the liquid outlet 5.1. The movable outer frame 5.3 is mounted on the liquid outlet 5.1 and is detachably connected to the channel housing 5. The detachable connection can be achieved using screws or other detachable methods. Similarly, the collection box and the channel housing 5 can also be connected using screws.

[0038] In addition, to ensure sufficient oxygen concentration inside the protective structure and prevent excessive carbon dioxide from affecting the user's normal breathing, preferably, a carbon dioxide sensor is installed inside the protective cover 1. This sensor is electrically connected to a controller module, which monitors the carbon dioxide concentration inside the protective cover 1 and sends the monitored value to the controller module. The controller module is communicatively connected to an alarm module. In this way, the alarm module alerts the user, who can then breathe by opening the mouth and nose cover.

[0039] Finally, to achieve automated control, the controller module of this invention can be connected to the exhaust fan device 2, the extraction fan device 4, the water outlet drive component 7.5, and the lifting drive component 7.8. Furthermore, the exhaust fan device 2 and the extraction fan device 4 are powered by their own power supplies. The filter device is detachable and can be used separately from the extraction fan device 4, facilitating maintenance and repair. The absence of a protective structure for the filter device also provides some comfort for the user and makes it convenient to use when not spraying pesticides. This detachable connection method can be achieved using screws, bolts, or other structural forms.

[0040] The above description is a detailed description of the preferred embodiments of the present invention. However, the embodiments are not intended to limit the scope of the patent application of the present invention. All equivalent changes or modifications made under the technical spirit of the present invention should fall within the patent scope covered by the present invention.

Claims

1. A protective face shield for agricultural spraying operations, comprising a helmet-type protective shield body, characterized in that: The front of the protective cover has an eye area and a mouth and nose area. The eye area is a transparent observation window, and the mouth and nose area is a through-hole structure that can be opened and closed through a mouth and nose cover. The protective cover is provided with an exhaust vent, and an exhaust fan is installed on the exhaust vent. It also includes a protective suit body connected to a protective cover, with an air inlet at its lower part. An exhaust fan and a filter are installed on the air inlet. The filter is detachably mounted on the protective suit body and includes a channel shell. One end of the channel shell is connected to the air inlet, and the other end is open. Inside the channel shell, filter cotton sheets, absorbent cotton structures, and filter cartridge structures are arranged sequentially and at intervals. The filter cartridge structure is positioned close to the exhaust fan. The absorbent cotton structure includes an absorbent cotton layer, a filter plate, a collection assembly, and a spray assembly. The absorbent cotton layer is placed on the filter plate, which is located between the absorbent cotton layer and the filter cartridge structure. The collection assembly includes a collection box detachably mounted at the bottom of the channel shell, directly below the absorbent cotton layer and the filter plate, and connected to the interior of the channel shell through a liquid outlet on the channel shell. The liquid outlet opens and closes via a movable flap. The spray assembly... The water assembly includes a water tank, a water outlet drive, a spray pipe, and a lifting drive. The water outlet drive is connected to the water tank and the spray pipe, respectively, and is used to deliver water from the water tank to the spray pipe. The spray pipe is located on the side of the absorbent cotton layer away from the filter plate, parallel to the surface of the absorbent cotton layer and perpendicular to the height direction of the absorbent cotton layer. Several spray holes are spaced apart on the pipe wall facing the absorbent cotton layer. The distance between the spray pipe and the filter plate is less than the thickness of the absorbent cotton layer in its natural state. A push rod is provided on the spray pipe, with the lower end of the push rod located below the spray pipe and facing the liquid outlet. The two ends of the spray pipe are slidably connected to the channel shell, and one end is connected to the movable end of the lifting drive. Under the action of the lifting drive, the spray pipe moves up and down along the height direction of the absorbent cotton layer. As the spray pipe descends, the push rod pushes the movable plate to open the liquid outlet.

2. The protective face shield for agricultural spraying operations as described in claim 1, characterized in that: The filter cotton sheet, absorbent cotton layer, filter plate, and filter element structure can all be detachably installed on the channel housing.

3. The protective face shield for agricultural spraying operations as described in claim 1, characterized in that: The filter element structure includes an activated carbon layer and an antibacterial layer.

4. The protective face shield for agricultural spraying operations as described in claim 1, characterized in that: The movable plate is rotatably mounted on the movable outer frame, and a torsion spring is provided at the rotatable connection. The movable plate closes the liquid outlet under the action of the torsion spring, and rotates downward to open the liquid outlet when it is pushed down by the push rod.

5. A protective face shield for agricultural spraying operations as described in claim 4, characterized in that: The movable outer frame is mounted on the liquid outlet and is detachably connected to the channel shell.

6. A protective face shield for agricultural spraying operations as described in claim 1, characterized in that: The nozzle is angled downwards.

7. A protective face shield for agricultural spraying operations as described in claim 1, characterized in that: The two ends of the spray pipe are slidably mounted on the filter plate via sliders, and are slidably connected to the channel shell via the filter plate.

8. A protective face shield for agricultural spraying operations as described in claim 1, characterized in that: The end of the spray pipe that is not connected to the lifting drive is connected to the water tank via a flexible hose.

9. A protective face shield for agricultural spraying operations as described in claim 1, characterized in that: The water outlet drive is a miniature water pump, with the inlet end of the miniature water pump connected to a water tank and the outlet end connected to the spray pipe.

10. A protective face shield for agricultural spraying operations as described in claim 1, characterized in that: A carbon dioxide sensor is installed inside the protective cover. The carbon dioxide sensor is electrically connected to a controller module, which is used to monitor the carbon dioxide concentration inside the protective cover and send the monitored value to the controller module. The controller module is communicatively connected to an alarm module.

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