Oilfield downhole operation protection mask

Abstract

The utility model belongs to the field of protective masks, and particularly relates to an oil field downhole operation protective mask which comprises a mask body, an inner mask, a breathing tube and a breathing device. A first sealing strip is arranged on the edge of the cover body, and a second sealing strip is arranged on the edge of the inner cover to form double sealing; the breathing device comprises an upper cover plate, a lower cover plate and a purification filter disc, and efficient air purification is achieved through a multi-layer filtering structure; the breathing tube is detachably connected with the breathing device, so that maintenance and replacement are facilitated. Precise adjustment of parts is achieved through the adjusting and locking mechanism, the sealing performance, the filtering effect and the operation convenience are improved, and the safety protection requirement under the complex working environment is met.

Description

Technical Field

[0001] This utility model relates to the field of protective face mask technology, specifically a protective face mask for oilfield downhole operations. Background Technology

[0002] In oilfield downhole operations, workers often face complex environmental conditions, including toxic and harmful gases, dust, high temperature, and high humidity, posing a serious threat to human health and safety. To protect workers' respiratory systems and faces from external pollutants, protective masks are indispensable protective equipment. However, existing protective masks still have many shortcomings in practical applications. For example, traditional masks have poor sealing performance, easily allowing external pollutants to enter the mask and affecting its protective effect; at the same time, their breathing devices have complex structures, making filter replacement inconvenient and failing to meet the needs of rapid maintenance. Furthermore, the protective shells of existing masks are usually made of ordinary materials, lacking impact resistance and transparency, making them easily damaged in harsh environments, affecting visibility and operational safety. These problems not only reduce the overall protective performance of the mask but also increase the operational burden and safety hazards for workers. Therefore, there is an urgent need for a protective mask for oilfield downhole operations that can effectively solve the above problems, improving protective performance, simplifying maintenance procedures, and enhancing ease of use and reliability. Utility Model Content

[0003] This invention addresses the problems of insufficient sealing, poor breathing filtration, and inconvenient operation found in existing protective masks for oilfield downhole operations. It proposes a protective mask with a reasonable structure, complete functions, and ease of use. The technical solution solves these problems through a double-sealing design, a highly efficient breathing filtration device, detachable connecting components, and an adjustment and locking mechanism.

[0004] This utility model provides a protective mask for oilfield downhole operations, including a mask body, a protective shell, an inner shell, a breathing tube, and a breathing device. The mask body, as the main part of the mask, has a first sealing strip glued to its edge with adhesive to isolate harmful substances from the outside. A transparent protective shell, made of acrylic material, is fixedly installed at the front of the mask body, ensuring both clear visibility and physical protection. Furthermore, the inner shell is located inside the mask body, and a second sealing strip is glued to its edge with adhesive to isolate the cavity formed between the inner shell and the protective shell, thereby enhancing the sealing performance. One end of the breathing tube communicates with the interior of the inner shell, and the other end extends through the protective shell to the outside of the mask body and connects to the breathing device to achieve air circulation and breathing function.

[0005] Furthermore, the design of the breathing device is one of the key innovations of this invention. The breathing device includes an upper cover plate, a lower cover plate, and a purification filter. Both the upper and lower cover plates have several arrayed first and second filter holes in their center for airflow. The purification filter is pressed between the upper and lower cover plates, filtering and purifying the air. Specifically, the top of the upper cover plate has an integrally formed through-hole block with a slidingly connected fastening block inside, and a second spring provides a reset function, ensuring a stable connection between the breathing tube and the upper cover plate. A mating block is provided on the outer circumference of the breathing tube, with a through hole in the center of the mating block that matches the through-hole block, facilitating quick installation and disassembly. In addition, the upper cover plate has symmetrically arranged slots that penetrate itself, and the lower cover plate has integrally formed symmetrically arranged barbs on one side, made of elastic plastic material. The purification filter has recesses on both sides that match the barbs, allowing for quick installation and replacement of the purification filter through the interaction of the barbs and recesses.

[0006] Furthermore, this utility model also includes an adjustment and locking mechanism for achieving precise adjustment and reliable locking of the cover component. A rotating ring is rotatably fitted around the outside of the arc-shaped tube, and an integrally formed top block is provided on the top of the rotating ring. A support block is fixed to one side of the cover body by screws, and a pull rod is slidably installed inside the support block. End blocks and connecting rods are welded to both ends of the pull rod, respectively. An arc-shaped plate is welded to the end of the connecting rod, and a locking block is welded to the bottom of the arc-shaped plate. A groove for limiting the top block is formed at the bottom of the locking block. A sliding hole is formed inside the support block, and the pull rod is slidably nested inside the sliding hole. A first spring is fitted outside the support block, and its two ends are fixedly connected to the support block and the end block, respectively, providing a restoring force. By pulling the pull rod, the locking block no longer limits the top block, thereby achieving adjustment of the position of the rotating ring.

[0007] Specifically, the technical solution of this utility model further improves the performance of the mask through the following specific implementation details: S1, the first and second sealing strips are made of highly elastic material and are evenly distributed along the edges of the mask body and inner cover, and are fixedly connected by adhesive to form a double sealing barrier; S2, the purification filter is made of multi-layer composite material, including a pre-filter layer, an activated carbon adsorption layer and a high-efficiency filter layer, which are arranged in sequence and pressed between the upper cover plate and the lower cover plate; S3, the connection between the breathing tube and the through block is achieved by a fastening block and a docking block. The fastening block automatically resets under the action of the second spring to ensure the stability of the connection; S4, the first spring in the adjustment and locking mechanism provides a constant reset force, so that the pull rod can automatically reset after being released, and the locking block re-limits the top block, thereby keeping the position of the rotating ring fixed.

[0008] This invention achieves excellent technical results through the above-described technical solution. The dual sealing design of the first and second sealing strips effectively isolates harmful external substances, significantly improving the mask's sealing performance. The multi-layer composite structure of the purification filter can efficiently filter particulate matter, harmful gases, and microorganisms in the air, ensuring the user's respiratory health. The detachable design of the breathing tube and breathing device, along with the quick-replacement mechanism of the purification filter, significantly improves the mask's ease of use and maintenance efficiency. The adjustment and locking mechanism, through the cooperation of the pull rod, locking block, and rotating ring, achieves precise adjustment and reliable locking of the mask components, enhancing the mask's applicability and stability.

[0009] In summary, this utility model provides a well-structured and functionally complete protective mask for oilfield downhole operations, addressing safety requirements in complex working environments through a specific implementation method. The various components of this utility model and their interactions have been carefully designed to ensure the mask's reliability, safety, and convenience in practical applications.

[0010] To make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram showing the protective shell of this utility model.

[0014] Figure 3 This is a schematic diagram of the overall structure of this utility model without the head mold;

[0015] Figure 4 This is a partial schematic diagram highlighting the purification device of this utility model;

[0016] Figure 5 This is a partial schematic diagram of the lower cover plate of this utility model after disassembly;

[0017] Figure 6 This is a partial schematic diagram of the present invention when the purification filter is removed;

[0018] Figure 7 This is an enlarged view of section A of the present invention;

[0019] Figure 8 This is an enlarged view of section B of this utility model;

[0020] Figure 9 This is a top sectional view of the docking block of this utility model.

[0021] Numbering on the map:

[0022] 1. Cover; 100. First sealing strip; 2. Protective shell; 200. Breathing tube; 3. Purification device; 31. Upper cover plate; 32. Lower cover plate; 33. Slot; 34. Barb; 35. Connecting block; 36. Through block; 37. Fastening block; 38. Rotating ring; 39. Push block; 40. Top block; 41. Locking block; 42. Arc plate; 4. Strap; 5. Second sealing strip; 6. Inner cover; 7. Connecting rod; 8. Support block; 9. First spring; 10. Pull rod; 11. End block; 12. First filter hole; 13. Second filter hole; 14. Purification filter; 15. Notch; 16. Inner groove; 17. Second spring. Detailed Implementation

[0023] This utility model provides a protective mask for downhole operations in oil fields, the specific implementation of which is as follows. (Referring to the attached...) Figure 1 To be continued Figure 9 The protective mask of this utility model includes a mask body 1, a protective shell 2, an inner cover 6, a breathing tube 200, and a breathing device. The mask body 1, as the main body of the mask, has a first sealing strip 100 glued to its edge with adhesive. The first sealing strip 100 is made of a highly elastic material and is evenly distributed along the edge of the mask body 1, forming a first sealing barrier to isolate harmful substances from the outside. A transparent protective shell 2 is fixedly installed at the front of the mask body 1. The protective shell 2 is made of acrylic material, ensuring clear vision and providing physical protection while also having good impact resistance. The inner cover 6 is located inside the mask body 1, and a second sealing strip 5 is glued to its edge with adhesive. The second sealing strip 5 is also made of a highly elastic material and is used to isolate the cavity formed between the inner cover 6 and the protective shell 2, thereby enhancing the overall sealing performance. One end of the breathing tube 200 communicates with the inside of the inner cover 6, and the other end extends through the protective shell 2 to the outside of the mask body 1 and connects to the breathing device, realizing air circulation and breathing functions.

[0024] The design of the breathing device is one of the key innovations of this invention. The breathing device includes an upper cover plate 31, a lower cover plate 32, and a purification filter 14. Both the upper cover plate 31 and the lower cover plate 32 have several arrayed first filter holes 12 and second filter holes 13 in their middle sections for air circulation. The purification filter 14 is pressed between the upper cover plate 31 and the lower cover plate 32, serving to filter and purify the air. The purification filter 14 is made of a multi-layer composite material, including a pre-filter layer, an activated carbon adsorption layer, and a high-efficiency filter layer, arranged sequentially and pressed between the upper cover plate 31 and the lower cover plate 32. The pre-filter layer intercepts large particles, the activated carbon adsorption layer adsorbs harmful gases and odors, and the high-efficiency filter layer captures fine particles and microorganisms, thereby achieving highly efficient air purification. The top of the upper cover plate 31 has an integrally formed, triangularly arranged through block 36. An inner groove 16 is formed on one side of the through block 36, and a fastening block 37 is slidably connected inside the inner groove 16. The top of the fastening block 37 is arc-shaped. One end of a second spring 17 is fixedly connected to one side of the fastening block 37 via a snap-fit. The other end of the second spring 17 is fixedly connected to the side wall of the inner groove 16, achieving a reset function and ensuring a stable connection between the breathing tube 200 and the upper cover plate 31. A mating block 35 is provided on the outer circumference of the breathing tube 200. The mating block 35 has a through hole in the center that matches the through block 36, facilitating quick installation and disassembly. The upper cover plate 31 has symmetrically arranged slots 33 that penetrate itself. The lower cover plate 32 has integrally formed, symmetrically arranged barbs 34 on one side, made of elastic plastic material. The purification filter 14 has notches 15 on both sides that are adapted to the barbs 34. The quick installation and replacement of the purification filter 14 can be achieved by the cooperation between the barbs 34 and the notches 15.

[0025] The adjustment and locking mechanism is another important component of this invention, used to achieve precise adjustment and reliable locking of the cover components. A rotating ring 38 is rotatably fitted around the outside of the arc-shaped tube, and an integrally formed top block 40 is provided on the top of the rotating ring 38. A support block 8 is fixed to one side of the cover 1 by screws, and a pull rod 10 is slidably installed inside the support block 8. End blocks 11 and connecting rods 7 are welded to both ends of the pull rod 10, respectively. An arc-shaped plate 42 is welded to the end of the connecting rod 7, and a locking block 41 is welded to the bottom of the arc-shaped plate 42. A groove for limiting the top block 40 is provided at the bottom of the locking block 41. A sliding hole is provided inside the support block 8, and the pull rod 10 is slidably nested inside the sliding hole. A first spring 9 is fitted externally, and both ends of the first spring 9 are fixedly connected to the support block 8 and the end block 11, respectively, providing a constant restoring force. When the pull rod 10 is pulled, the locking block 41 no longer limits the top block 40, thereby achieving adjustment of the position of the rotating ring 38. After the lever 10 is released, the first spring 9 automatically resets, pushing the locking block 41 to reposition the top block 40, keeping the rotating ring 38 in a fixed position.

[0026] Based on practical application scenarios, the specific operating principle and process of this utility model are as follows. During use, the user first puts on the mask. Two straps 4 are fixed to the mask body 1 via buckles, securing the mask body 1 to the head and ensuring the first sealing strip 100 fits tightly against the face, forming the first sealing barrier. Subsequently, the inner cover 6 is isolated from the protective shell 2 by the cavity between the second sealing strip 5 and the inner cover 2, forming the second sealing barrier and significantly improving the overall sealing performance of the mask. The user inhales air through the breathing tube 200. The air undergoes multi-layer filtration through the purification filter 14 in the breathing device. The primary filter layer intercepts large particles, the activated carbon adsorption layer adsorbs harmful gases and odors, and the high-efficiency filter layer captures fine particles and microorganisms, ultimately outputting clean air for the user to breathe. When it is necessary to replace the purification filter 14, the user simply presses the fastening block 37 on the through block 36, causing the fastening block 37 to retract into the through block 36, thus separating the breathing tube 200 from the upper cover 31. Next, the user presses the barb 34 to disengage it from the notch 15, thereby quickly removing the purification filter 14 and replacing it with a new one. The entire process is simple and convenient, significantly improving the maintenance efficiency of the mask.

[0027] The operation of the adjustment and locking mechanism is as follows: When the user needs to adjust the position of the arc-shaped tube, pull the lever 10 to disengage the locking block 41 from the limiting state of the top block 40. At this time, the rotating ring 38 can rotate freely, pushing the fastening block 37 into the through block 36, thereby separating the arc-shaped tube from the upper cover plate 31. After the adjustment is completed, release the lever 10, the first spring 9 automatically resets, and pushes the locking block 41 to re-limit the top block 40, ensuring that the position of the rotating ring 38 is fixed. This mechanism is reasonably designed, easy to operate, and can meet the adjustment needs of different users.

[0028] The technical solution of this utility model further improves the performance of the mask through the following specific implementation details. The first sealing strip 100 and the second sealing strip 5 are made of high-elasticity material and are evenly distributed along the edges of the mask body 1 and the inner cover 6. They are fixedly connected by adhesive to form a double sealing barrier. The purification filter 14 is made of multi-layer composite material, including a pre-filter layer, an activated carbon adsorption layer and a high-efficiency filter layer, which are arranged in sequence and pressed between the upper cover plate 31 and the lower cover plate 32 to achieve efficient air purification. The connection between the breathing tube 200 and the through block 36 is achieved by the fastening block 37 and the docking block 35. The fastening block 37 automatically resets under the action of the second spring 17 to ensure the stability of the connection. The first spring 9 in the adjustment and locking mechanism provides a constant reset force, so that the pull rod 10 can automatically reset after being released, and the locking block 41 re-limits the top block 40, thereby keeping the position of the rotating ring 38 fixed.

[0029] In summary, this utility model achieves excellent technical results through the above-described technical solutions. The dual sealing design of the first sealing strip 100 and the second sealing strip 5 effectively isolates harmful external substances, significantly improving the sealing performance of the mask. The multi-layer composite structure of the purification filter 14 can efficiently filter particulate matter, harmful gases, and microorganisms in the air, ensuring the user's respiratory health. The detachable design of the breathing tube 200 and the breathing device, as well as the quick replacement mechanism of the purification filter 14, significantly improve the ease of use and maintenance efficiency of the mask. The adjustment and locking mechanism, through the cooperation of the pull rod 10, the locking block 41, and the rotating ring 38, achieves precise adjustment and reliable locking of the mask components, enhancing the applicability and stability of the mask. The various components of this utility model and their interactions have been carefully designed to ensure the reliability, safety, and convenience of the mask in practical applications.

[0030] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A protective mask for oilfield downhole operations, comprising a mask body (1), two straps (4) fixedly connected to the mask body (1) by buckles, a first sealing strip (100) glued along the edge of the mask body (1) by adhesive, an inner cover (6) provided inside the mask body (1), one end of a breathing tube (200) communicating with the inside of the inner cover (6) fixed to the front part of the inner cover (6), the other end of the breathing tube (200) extending through the protective shell (2) to the outside of the mask body (1) and fixedly connected to a breathing device, characterized in that, A transparent protective shell (2) is fixedly provided at the front of the cover (1), and a second sealing strip (5) is glued along the edge of the inner cover (6) by adhesive. The second sealing strip (5) is used to isolate the inner cover (6) and the cavity formed between the inner cover (6) and the protective shell (2). The breathing device includes a purification filter (14), a lower cover plate (32), and an upper cover plate (31) fixedly connected to the breathing tube (200). The lower cover plate (32) and the upper cover plate (31) are provided with a plurality of arrayed first filter holes (12) and second filter holes (13) in the middle. The upper cover plate (31) and the lower cover plate (32) press the purification filter (14) between them. The upper cover plate (31) and the lower cover plate (32) are detachably fixedly connected together.

2. The protective mask for oilfield downhole operations according to claim 1, characterized in that: The protective shell (2) is made of acrylic material.

3. The protective mask for oilfield downhole operations according to claim 1, characterized in that: The outer side of the arc tube is fitted with a rotating ring (38), and the top of the rotating ring (38) is provided with an integrally formed top block (40). A support block (8) is fixed to one side of the cover (1) by screws. A pull rod (10) is slidably arranged inside the support block (8). An end block (11) and a connecting rod (7) are welded to both ends of the pull rod (10). An arc plate (42) is welded to the end of the connecting rod (7). A locking block (41) is welded to the bottom of the arc plate (42). A groove for limiting the top block (40) is opened at the bottom of the locking block (41).

4. The protective mask for oilfield downhole operations according to claim 3, characterized in that: The support block (8) has a sliding hole inside, and the pull rod (10) is slidably nested inside the sliding hole. A first spring (9) is sleeved on the outside of the pull rod (10), and the two ends of the first spring (9) are fixedly connected to one side of the support block (8) and one side of the end block (11), respectively.

5. The protective mask for oilfield downhole operations according to claim 1, characterized in that: The top of the upper cover plate (31) is provided with an integrally formed through block (36) arranged in a triangular shape. An inner groove (16) is provided on one side of the through block (36). A fastening block (37) is slidably connected inside the inner groove (16). The top of the fastening block (37) is arc-shaped. One side of the fastening block (37) is fixedly connected to one end of a second spring (17) by a buckle. The other end of the second spring (17) is fixedly connected to the side wall of the inner groove (16).

6. The protective mask for oilfield downhole operations according to claim 5, characterized in that: The outer circumferential surface of the breathing tube (200) is provided with an integrally formed and triangularly distributed docking block (35), and the middle part of the docking block (35) is provided with a through hole that is adapted to the corresponding through block (36).

7. The protective mask for oilfield downhole operations according to claim 1, characterized in that: The upper cover plate (31) has a slot (33) that runs through itself and is symmetrically arranged. The lower cover plate (32) has an integrally formed and symmetrically arranged barb (34) on one side. The barb (34) is made of plastic elastic material.

8. The protective mask for oilfield downhole operations according to claim 7, characterized in that: The purification filter (14) has notches (15) on both sides that are adapted to the barb (34).

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