A powered air-purifying respirator

Abstract

The utility model discloses a power air supply filter formula respirator, including respirator main part, the back side of respirator main part is provided with the wearing board, and the top fixed mounting of respirator main part has the air outlet pipe, and the outer surface of air outlet pipe top end is sleeved with the air supply pipe, and the junction of air outlet pipe and air supply pipe is provided with the joint sleeve pipe, and the inner surface of joint sleeve pipe bottom is fixedly installed with the outer surface of air outlet pipe, and the outer surface of joint sleeve pipe top is screwed with the threaded sleeve pipe, and the inside of joint sleeve pipe is provided with a plurality of sealing mechanisms, the utility model discloses a joint sleeve pipe, threaded sleeve pipe and other structure are set up, when installing, the end of air supply pipe is inserted away from the face guard along the outer surface of air outlet pipe top end, so that the end of air supply pipe is in the sandwich cavity formed by air outlet pipe and joint sleeve pipe, then, utilize joint sleeve pipe, threaded sleeve pipe and other structure to fasten the junction of both, so that the sealed connection effect is formed, convenient operation, easy operation.

Description

Technical Field

[0001] This utility model relates to the field of respirator technology, and more specifically, to a powered air-purifying respirator. Background Technology

[0002] A powered air-purifying respirator is a respiratory protection system that uses an electric motor or other power source to deliver filtered and purified outside air to protective equipment such as a breathing mask and hood. This system not only provides clean air but also maintains a positive pressure environment inside the protective equipment. It is mainly used in harsh environments or workplaces with poor air quality, effectively ensuring the respiratory safety and comfort of workers. However, in actual construction applications, it has been found that when the air supply system operates at a specific air pressure and flow rate, the high-temperature hot air or low-temperature cold air, which is not temperature-regulated, can directly impact the user's respiratory tract and face. Long-term exposure to this environment can easily lead to occupational injuries such as heatstroke or frostbite, exposing obvious defects in the safety performance of traditional powered air-purifying respirators. To address this technical issue, a patent search revealed that publication number CN219539284U proposes an improved solution equipped with a constant temperature control system. The patent specification states that by integrating air filtration and constant temperature regulation, the safety performance of the respirator can be significantly improved. However, practical verification has shown that this solution still has the following technical limitations: its air supply duct and equipment outlet use a threaded connection. While this ensures interface sealing and connection stability during initial use, with increased usage frequency, the threaded structure is prone to wear, leading to a decrease in sealing performance and affecting the overall service life of the equipment. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, this utility model provides a powered air-purifying filter respirator to solve the problem that the threaded connection of some respirators in the prior art is prone to wear, resulting in a decrease in sealing performance and affecting service life.

[0004] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a powered air-purifying respirator, comprising... The respirator body has a wear plate on one side of its back. An air outlet pipe is fixedly installed on the top of the respirator body. An air supply pipe is sleeved on the outer surface of the top of the air outlet pipe. A connector sleeve is provided at the junction of the air outlet pipe and the air supply pipe. The inner surface of the bottom end of the connector sleeve is fixedly installed with the outer surface of the air outlet pipe. A threaded sleeve is threaded to the outer surface of the top end of the connector sleeve. Several sealing mechanisms are provided inside the connector sleeve. The top sidewall of the connector sleeve has several vertical grooves, and the several sealing mechanisms are arranged around the center of the connector sleeve and are located on the inner wall of the side plate of the connector sleeve that is separated by the vertical grooves. Each of the aforementioned sealing mechanisms includes a shaped mounting strip and a sliding groove. There are two shaped mounting strips, with handles fixedly installed at the top of each strip. Several flexible convex pads are fixedly installed on the side near the center of the connector sleeve. The flexible convex pads are arranged parallel to each other vertically. The sliding groove is formed on the inner wall of the side plate of the connector sleeve. The outer surface of the shaped mounting strip is slidably installed with the inner surface of the sliding groove.

[0005] The respirator body has a mounting plate fixedly installed on one side of its back surface, and a trapezoidal column fixedly installed on the wearable plate on the side of its back surface near the respirator body. The inner surface of the mounting plate is slidably installed on the outer surface of the trapezoidal column, and a limit mechanism is fixedly installed on the upper surface of the middle part of the wearable plate.

[0006] The limiting mechanism includes a frame, the bottom of which is fixedly installed on the upper surface of the middle part of the wearable plate. L-shaped sliders are slidably installed on the inner surfaces of both ends of the frame. Trapezoidal blocks are fixedly installed on the side ends of the bottom of the two L-shaped sliders. A spring is provided in the inner cavity of the middle part of the frame. The two ends of the spring are fixedly connected to the surfaces of the two L-shaped sliders that are close to each other.

[0007] An adjusting roller is rotatably mounted on the upper surface of the middle part of the frame. A traction rope is fixedly sleeved on the middle part of the adjusting roller. The two ends of the traction rope are fixedly connected to the surfaces of the tops of the two L-shaped sliders that are close to each other.

[0008] Compared with the prior art, the beneficial effects of this utility model are: In the above solution, by setting up structures such as connector sleeves and threaded sleeves, during installation, the end of the air supply pipe furthest from the face mask is inserted along the outer surface of the top of the air outlet pipe, so that the end of the air supply pipe is in the cavity formed by the air outlet pipe and the connector sleeve. Then, the threaded sleeve is moved upward, and after reaching the threaded part on the surface of the connector sleeve, the threaded sleeve is rotated and fixed to the top of the connector sleeve. At this time, the connector sleeve, which is in an outward state due to the insertion of the air supply pipe, is retracted by the threaded sleeve, and the sealing mechanism installed on the inner wall of the connector sleeve tightly presses the air supply pipe against the outer surface of the air outlet pipe. The reverse operation can realize the disassembly of the air outlet pipe and the air supply pipe. Thus, after the air supply pipe is sleeved on the outside of the air outlet pipe, the connector sleeve, threaded sleeve and other structures are used to tighten the junction of the two, so as to form a sealed connection effect. The operation is convenient and easy to operate.

[0009] In the above scheme, by setting up structures such as mounting plates, trapezoidal columns, and limiting mechanisms, after wearing the mounting plate, the mounting plate installed on the back of the respirator body slides into the trapezoidal column and the outer surface of the trapezoidal block that overlaps with the trapezoidal column. When the force applied to the trapezoidal block is released, under the elastic reset action of the spring set in the middle of the frame, it will push the L-shaped sliders connected to both ends and the trapezoidal block connected to the L-shaped sliders to move towards the two ends of the frame, so that the trapezoidal block and the trapezoidal column are misaligned. Thus, after the mounting plate is installed on the outside of the trapezoidal column, the top misaligned trapezoidal block provides a limiting effect and maintains the stability of the installation. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure of the air outlet pipe, air supply pipe, and connector sleeve of this utility model; Figure 3 This is a schematic diagram of the sealing mechanism and other structures of this utility model; Figure 4 This is a schematic diagram of the mounting plate, trapezoidal column, and other structures of this utility model; Figure 5 This is a schematic diagram of the limiting mechanism and other structures of this utility model.

[0011] [Figure Labels] 1. Respirator body; 2. Wearing plate; 3. Air outlet duct; 4. Air supply duct; 5. Connector sleeve; 6. Threaded sleeve; 7. Sealing mechanism; 70. Irregularly shaped mounting strip; 71. Flexible convex pad; 72. Handle; 73. Slide groove; 8. Mounting plate; 9. Trapezoidal column; 10. Limiting mechanism; 100. Frame; 101. L-shaped slider; 102. Trapezoidal block; 103. Spring; 104. Adjusting roller; 105. Traction rope. Detailed Implementation

[0012] To make the technical problems, technical solutions and advantages of this utility model clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0013] As attached Figure 1 To be continued Figure 5 An embodiment of this utility model provides a powered air-purifying respirator, including... The respirator body 1 has a wear plate 2 on one side of the back of the respirator body 1. An air outlet pipe 3 is fixedly installed on the top of the respirator body 1. An air supply pipe 4 is sleeved on the outer surface of the top of the air outlet pipe 3. A connector sleeve 5 is provided at the junction of the air outlet pipe 3 and the air supply pipe 4. The inner surface of the bottom end of the connector sleeve 5 is fixedly installed with the outer surface of the air outlet pipe 3. A threaded sleeve 6 is threadedly connected to the outer surface of the top of the connector sleeve 5. Several sealing mechanisms 7 are provided inside the connector sleeve 5. The top side wall of the connector sleeve 5 has several vertical grooves, and several sealing mechanisms 7 are arranged around the center of the connector sleeve 5 and are located on the inner wall of the side plate of the connector sleeve 5 that is separated by the vertical grooves. Each of the sealing mechanisms 7 includes a shaped mounting strip 70 and a sliding groove 73. There are two shaped mounting strips 70. A handle 72 is fixedly installed at the top of each shaped mounting strip 70. Several flexible convex pads 71 ​​are fixedly installed on the side near the center of the connector sleeve 5. The flexible convex pads 71 ​​are arranged parallel to each other. The sliding groove 73 is opened on the inner wall of the side plate of the connector sleeve 5. The outer surface of the shaped mounting strip 70 is slidably installed with the inner surface of the sliding groove 73. By setting a sealing mechanism 7, when the elasticity of the flexible convex pad 71 used to press the air supply pipe 4 to fit the air outlet pipe 3 decreases or the inner diameter of the air supply pipe 4 is larger than the outer diameter of the air outlet pipe 3, the flexible convex pad 71 can be replaced to ensure the sealing performance of the connection between the air outlet pipe 3 and the air supply pipe 4. Specifically, the irregularly shaped installation strip 70 is pulled out along the inner surface of the slide groove 73 by the handle 72, and the sealing mechanism 7 with the new flexible convex pad 71 is replaced. It is then installed inside the connector sleeve 5 to ensure the sealing effect of the connection. Furthermore, by using the replacement of parts, the entire replacement is avoided, thus reducing costs.

[0014] The respirator body 1 has a mounting plate 8 fixedly installed on one side of the back surface, and a trapezoidal column 9 fixedly installed on the surface of the wearable plate 2 near the respirator body 1. The inner surface of the mounting plate 8 is slidably installed with the outer surface of the trapezoidal column 9, and a limit mechanism 10 is fixedly installed on the upper surface of the middle part of the wearable plate 2.

[0015] The limiting mechanism 10 includes a frame 100. The bottom of the frame 100 is fixedly installed on the upper surface of the middle part of the wearable plate 2. L-shaped sliders 101 are slidably installed on the inner surfaces of both ends of the frame 100. Trapezoidal blocks 102 are fixedly installed on the side ends of the bottom of the two L-shaped sliders 101. A spring 103 is provided in the inner cavity of the middle part of the frame 100. The two ends of the spring 103 are fixedly connected to the surfaces of the two L-shaped sliders 101 that are close to each other.

[0016] Among them, an adjusting roller 104 is rotatably mounted on the upper surface of the middle part of the frame 100, and a traction rope 105 is fixedly sleeved on the middle part of the adjusting roller 104. The two ends of the traction rope 105 are fixedly connected to the surfaces of the tops of the two L-shaped sliders 101 that are close to each other. By setting the adjusting roller 104, when the trapezoidal block 102 is adjusted to coincide with the trapezoidal column 9, the adjusting roller 104 located in the middle of the frame 100 can be rotated. The traction rope 105 fixedly installed in the middle will be wound around the outside of the adjusting roller 104 as the adjusting roller 104 rotates, and the L-shaped slider 101 connected at both ends will slide along the inner wall of the frame 100 until the trapezoidal block 102 coincides with the trapezoidal column 9. This can be operated with one hand, improving the convenience of installing the respirator body 1 and the wearing plate 2.

[0017] The working process of this utility model is as follows: After wearing the device, by adjusting the main body 1 of the respirator, the ambient air is filtered and sent from the outlet pipe 3 into the connected air supply pipe 4, and then into the breathing mask connected to the other end of the air supply pipe 4. During this process, the temperature of the air is also regulated. In addition, the installation or disassembly of the air outlet pipe 3 and the air supply pipe 4 can be handled using structures such as the connector sleeve 5 and the threaded sleeve 6. The specific operation is as follows: during installation, insert the end of the air supply pipe 4 away from the mask along the outer surface of the top of the air outlet pipe 3, so that the end of the air supply pipe 4 is in the cavity formed by the air outlet pipe 3 and the connector sleeve 5. Then, move the threaded sleeve 6 upward, and after reaching the threaded part on the surface of the connector sleeve 5, rotate and fix the threaded sleeve 6 to the top of the connector sleeve 5. At this time, the connector sleeve 5, which is in an outward state due to the insertion of the air supply pipe 4, is retracted by the threaded sleeve 6, and the sealing mechanism 7 installed on the inner wall of the connector sleeve 5 tightly presses the air supply pipe 4 against the outer surface of the air outlet pipe 3. The reverse operation can realize the disassembly between the air outlet pipe 3 and the air supply pipe 4.

[0018] In addition, when wearing it, the wearing plate 2 can be fixed to the waist first, and then the respirator body 1 and the wearing plate 2 can be installed using the trapezoidal column 9, the limiting mechanism 10 and other structures, which improves the convenience of wearing. The specific operation is as follows: after wearing the wearing plate 2, the mounting plate 8 installed on the back of the respirator body 1 slides into the trapezoidal column 9 and the outer surface of the trapezoidal block 102 that overlaps with the trapezoidal column 9. When the force provided to the trapezoidal block 102 is released, under the elastic reset action of the spring 103 set in the middle of the frame 100, the L-shaped slider 101 connected to both ends and the trapezoidal block 102 connected to the L-shaped slider 101 will be pushed to move towards the two ends of the frame 100, so that the trapezoidal block 102 and the trapezoidal column 9 are misaligned.

[0019] The air supply measures of the respirator body 1 described above are implementation methods that can be selected by those skilled in the art without creative effort (refer to the filtration measures and air supply temperature adjustment measures described in CN219539284U, which do not need to be repeated in the specification); and the control method of this utility model is controlled by manually starting and stopping the switch. The wiring diagram of the power component and the power supply are common knowledge in the field. Furthermore, this utility model mainly protects the connection between the air outlet pipe 3 and the air supply pipe 4, so this utility model will not explain the control method and wiring arrangement in detail.

[0020] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A powered air-purifying respirator, characterized in that, include The respirator body (1) has a wear plate (2) on one side of its back. An air outlet pipe (3) is fixedly installed on the top of the respirator body (1). An air supply pipe (4) is sleeved on the outer surface of the top of the air outlet pipe (3). A connector sleeve (5) is provided at the junction of the air outlet pipe (3) and the air supply pipe (4). The inner surface of the bottom end of the connector sleeve (5) is fixedly installed with the outer surface of the air outlet pipe (3). A threaded sleeve (6) is threaded on the outer surface of the top of the connector sleeve (5). Several sealing mechanisms (7) are provided inside the connector sleeve (5). The top side wall of the connector sleeve (5) is provided with several vertical grooves, and the several sealing mechanisms (7) are arranged around the center of the connector sleeve (5) and are located on the inner wall of the side plate of the connector sleeve (5) separated by the vertical grooves. Each of the several sealing mechanisms (7) includes a shaped mounting strip (70) and a sliding groove (73). There are two shaped mounting strips (70). A handle (72) is fixedly installed on the top of each of the two shaped mounting strips (70), and several flexible convex pads (71) are fixedly installed on the side near the center of the connector sleeve (5). The several flexible convex pads (71) are arranged parallel to each other. The sliding groove (73) is opened on the inner wall of the side plate of the connector sleeve (5). The outer surface of the shaped mounting strip (70) and the inner surface of the sliding groove (73) are slidably installed.

2. The powered air-purifying respirator according to claim 1, characterized in that, An mounting plate (8) is fixedly installed on one side of the back of the respirator body (1). A trapezoidal column (9) is fixedly installed on the surface of the wearable plate (2) near the respirator body (1). The inner surface of the mounting plate (8) is slidably installed with the outer surface of the trapezoidal column (9). A limiting mechanism (10) is fixedly installed on the upper surface of the middle part of the wearable plate (2).

3. The powered air-purifying respirator according to claim 2, characterized in that, The limiting mechanism (10) includes a frame (100), the bottom of the frame (100) is fixedly installed on the upper surface of the middle part of the wearable plate (2), and L-shaped sliders (101) are slidably installed on the inner surfaces of both ends of the frame (100). Trapezoidal blocks (102) are fixedly installed on the side ends of the bottom of the two L-shaped sliders (101). A spring (103) is provided in the inner cavity of the middle part of the frame (100), and the two ends of the spring (103) are fixedly connected to the surfaces of the two L-shaped sliders (101) that are close to each other.

4. The powered air-purifying respirator according to claim 3, characterized in that, An adjusting roller (104) is rotatably mounted on the upper surface of the middle part of the frame (100). A traction rope (105) is fixedly sleeved on the middle part of the adjusting roller (104). The two ends of the traction rope (105) are fixedly connected to the surfaces of the tops of the two L-shaped sliders (101) that are close to each other.

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