High-efficiency hand plant dyeing container with constant temperature control

Abstract

The utility model relates to manual plant manufacturing technical field, especially a kind of high-efficiency manual plant dyeing container with thermostatic control, heating component is equipped around its dyeing operation box, there is rotating mounting hole in upper end, two sides have the air flow control valve of control heat dissipation, temperature monitor is equipped in the center of lower end, can intelligent temperature control;Input communication pipe is rotatably arranged in rotating mounting hole and is communicated with outside, it is connected with the U-shaped mounting pipe of output mounting hole in center position fixed communication and inside having, output mounting hole is connected atomizing nozzle for dyeing by output hose.Jointing structure of angle of rotation is slidably installed in the two sides of U-shaped mounting pipe, the working angle of atomizing nozzle can be flexibly changed, to ensure that dye liquor is evenly covered;Driving rotation structure is designed on the outside of lower end of dyeing operation box, can drive U-shaped mounting pipe to rotate, realizes intelligent adjustment of coloring direction;The device precisely controls temperature and humidity, improves coloring uniformity and color saturation, accelerates drying, optimizes dyeing path in all directions, improves operation efficiency and processing quality.

Description

Technical Field

[0001] This utility model relates to the field of handmade plant manufacturing technology, and in particular to a high-efficiency handmade plant dyeing container with constant temperature control. Background Technology

[0002] Handmade plant-based products are creative works made using natural plant materials or processed plant elements, crafted through traditional handcrafting techniques. They encompass various forms, including dried flower decorative paintings, pressed flower bookmarks, plant specimen frames, and rattan handicrafts. These products retain the natural beauty and unique textures of plants while incorporating the maker's ingenuity and emotion. They add a touch of nature and artistic style to living spaces, while also conveying an environmentally friendly and sustainable lifestyle, making them high-quality decorative items with both aesthetic appeal and cultural significance. Handmade plant-dyed containers, as an important branch of handmade plant-based products, use natural plant dyes and traditional or innovative dyeing techniques to hand-color containers made of ceramics, fabrics, and wood. This blends the natural colors of plants with the charm of handcrafted techniques, resulting in containers with soft, rustic, and varied hues. Simultaneously, they embody a natural and environmentally friendly philosophy, adding unique artistic beauty and cultural depth to everyday items.

[0003] Currently, the production process of handmade plant-dyed containers still relies primarily on traditional, purely manual coloring methods, which suffer from significant efficiency shortcomings. From the coloring stage, the manual application of dyes using hand tools not only demands a high level of skill from the operators but also limits the processing to only a small number of containers or specific areas at a time, making batch production difficult. After coloring, the containers must be air-dried or simply dried in a well-ventilated environment, a process greatly affected by external factors such as temperature, humidity, and light. The drying cycle often lasts for hours or even days, resulting in low overall production efficiency and making it difficult to meet market demands for timely delivery.

[0004] More importantly, traditional processes lack effective environmental control methods, directly affecting the stability of dyeing quality. The coloring effect of plant dyes is extremely sensitive to parameters such as temperature and humidity: when the temperature is too low, the dye solubility decreases, easily forming color patches on the container surface, leading to uneven dyeing; when the temperature is too high, it may destroy the natural pigment components in the dye, resulting in dull colors and reduced color fastness; and humidity fluctuations will change the adhesion and penetration speed of the dye on the container surface, causing obvious color differences and poor texture consistency in the same batch of products. Even if operators frequently adjust their techniques to adapt to environmental changes, it is difficult to guarantee the uniformity of product quality, increasing the cost of subsequent screening and rework.

[0005] Furthermore, the cumbersome operating procedures increase the labor intensity of practitioners. Traditional dyeing requires multiple steps, including dye preparation, manual coloring, multiple touch-ups, natural drying, and color fastness testing. Containers need to be manually transferred between each step, and some steps require continuous monitoring of the environment and dye status, resulting in poor operational continuity. At the same time, to avoid the adverse effects of environmental factors, practitioners often need to work in concentrated periods (such as when the temperature is suitable and the humidity is stable), further compressing the effective production time. This not only reduces work comfort but also limits the increase in production capacity. These problems have become key bottlenecks restricting the large-scale and high-quality development of the handmade plant dyeing container industry. Utility Model Content

[0006] To overcome the technical defects of the existing technology, this utility model provides a high-efficiency hand-dyed plant container with constant temperature control, so as to improve the efficiency and convenience of the dyeing operation.

[0007] The technical solution adopted in this utility model is: a high-efficiency hand-dyed plant container with constant temperature control, comprising: The dyeing operation box is the main operating component of the device. It is surrounded by heating components and has a rotating mounting hole at the center of the upper end. Airflow control valves are located on both sides of the dyeing operation box to control the heat dissipation effect of the device; A temperature monitor is installed at the lower center of the dyeing operation box for intelligent control of the internal temperature of the device. An input connecting pipe is rotatably installed inside the rotating mounting hole, communicating with the outside. The U-shaped mounting tube is fixedly connected to the input connecting tube at its center, and output mounting holes are evenly designed on its inner side. An output hose is fixedly connected to the output mounting hole to improve the convenience of pigment output; A misting nozzle, located at the other end of the output hose, is used for dyeing plants; An adjustable structure is slidably installed on both sides of the U-shaped mounting tube and rotatably connected to the atomizing nozzle respectively; The drive mechanism is designed at the lower outer end of the dyeing operation box to drive the U-shaped mounting tube to rotate.

[0008] Preferably, the heating component includes: Electric heating elements are installed around the dyeing operation box to control the temperature around the device. The electric heating turbine wire is embedded in the electric heating mounting slots opened at both ends of the dyeing operation box, and is used to regulate the temperature of the upper and lower parts of the device.

[0009] Preferably, the dyeing operation box has connection through holes at all four corners on both sides, the airflow control valve is fixedly connected to the connection through holes, and a monitoring installation slot is provided at the center of the lower end of the dyeing operation box, and the temperature monitor is embedded in the monitoring installation slot.

[0010] Preferably, positioning mounting plates are fixedly provided on both sides of the interior of the U-shaped mounting tube, and rotating positioning holes are evenly designed on the positioning mounting plates. Rotating connecting shafts that are rotatably connected to the rotating positioning holes are designed on both sides of one end of the atomizing nozzle.

[0011] Preferably, the angle adjustment structure includes: The lifting control frame is slidably mounted in the vertical sliding grooves opened on both sides of the U-shaped mounting tube, with linkage sliding holes evenly opened on both sides and a lifting threaded hole designed in the center. A linear screw motor is fixedly installed on both upper ends of the U-shaped mounting tube, and its output end is threadedly connected to the lifting threaded hole.

[0012] Preferably, lifting connecting rods are welded and fixed on both sides of the other end of the atomizing nozzle, and the lifting connecting rods are slidably connected to the linkage sliding hole.

[0013] Preferably, the driving structure includes: A linkage toothed ring is welded and fixed at the opening of the U-shaped mounting tube to drive the atomizing nozzle to rotate. The drive motor is located in one corner of the dyeing operation box, and its output end is fixedly equipped with a power gear that meshes with the linkage gear ring, which is the driving force for the rotation of the U-shaped mounting tube.

[0014] Preferably, the lower inner surface of the dyeing operation box is provided with an annular mounting groove, the linkage gear ring is rotatably installed in the annular mounting groove, and the drive motor is embedded and fixed on one side of the annular mounting groove.

[0015] The beneficial effects of this invention are as follows: By introducing an operating box equipped with a constant temperature control system, the key parameters such as temperature and humidity inside the device can be precisely and flexibly adjusted, creating the best environment for hand-dyed plants, thereby significantly improving the uniformity and saturation of plant coloring, while accelerating the drying process and greatly improving overall work efficiency; In addition, the device innovatively adopts an adjustable angle structure, supporting flexible changes in the working angle of the atomizing nozzle to ensure that the dye solution evenly covers the plant surface; Combined with the drive structure design, intelligent adjustment of the coloring direction is achieved, comprehensively optimizing the dyeing path, and further enhancing the device's coloring efficiency and processing quality for plants. Attached Figure Description

[0016] Figure 1 This is a side sectional view of the present invention.

[0017] Figure 2 This is a schematic diagram of the main structure of this utility model.

[0018] Figure 3 This is a side view of the structure of this utility model.

[0019] Figure 4 This is a schematic diagram of the drive structure in this utility model.

[0020] Figure 5 This is a structural connection diagram of the atomizing nozzle part in this utility model.

[0021] Figure 6 This is a schematic diagram of the angle adjustment structure in this utility model.

[0022] Explanation of reference numerals in the attached figures: 1. Dyeing operation box; 2. Heating component; 201. Electric heating tube; 202. Electric heating turbine wire; 3. Airflow control valve; 4. Temperature monitor; 5. Input connecting pipe; 6. U-shaped mounting pipe; 601. Positioning mounting plate; 7. Output hose; 8. Atomizing nozzle; 801. Rotating connecting shaft; 802. Lifting connecting rod; 9. Angle adjustment structure; 901. Lifting control frame; 902. Linear screw motor; 10. Drive structure; 101. Linkage gear ring; 102. Drive motor. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-6 As shown, this embodiment provides a high-efficiency hand-dyed plant container with constant temperature control, comprising: The dyeing operation box 1 is the main operating component of the device, surrounded by heating components 2, with a rotating mounting hole at the center of its upper end; the heating component 2 includes: The heating element 201 is set around the dyeing operation box 1 to control the temperature around the device; the heating turbine wire 202 is embedded in the heating mounting slots opened at the upper and lower ends of the dyeing operation box 1 to regulate the temperature of the upper and lower parts of the device.

[0024] This high-efficiency hand-dyeing container with constant temperature control uses a core dyeing operation box 1 as the main operating component, providing space for plant dyeing. The surrounding heating components 2 play a crucial role in constant temperature control. Among them, the electric heating tubes 201 set around the dyeing operation box 1 can effectively control the temperature around the device. The electric heating turbine wires 202 embedded in the electric heating mounting slots at the upper and lower ends of the dyeing operation box 1 are specifically used to precisely control the temperature of the upper and lower parts of the device. In use, the plants to be dyed and the dye are placed in the dyeing operation box 1. Through the coordinated work of the electric heating tubes 201 and the electric heating turbine wires 202, the entire device reaches and maintains a suitable and uniform temperature, creating stable conditions for hand-dyeing plants and ensuring the dyeing effect.

[0025] Airflow control valve 3 is set on both sides of the dyeing operation box 1 to control the heat dissipation effect of the device; connection through holes are opened at the four corners of both sides of the dyeing operation box 1, and the airflow control valve 3 is fixedly connected to the connection through holes; a monitoring installation slot is opened at the center of the lower end of the dyeing operation box 1, and the temperature monitor 4 is embedded in the monitoring installation slot.

[0026] The airflow control valves 3 installed on both sides of the dyeing operation box 1 are fixedly connected to the connecting holes at the four corners on both sides. This design allows for flexible adjustment of the heat dissipation effect of the device. When the temperature is too high during the dyeing process, the opening of the airflow control valves 3 can be opened or increased to allow external air to enter the dyeing operation box 1 through the connecting holes, accelerating the circulation and discharge of hot air inside the box, thereby effectively reducing the temperature inside the box. Conversely, the opening can be reduced or closed to maintain a stable temperature inside the box. The temperature monitor 4, which is embedded in the center of the lower end of the dyeing operation box 1, can monitor the temperature changes inside the box in real time and provide data feedback so that the airflow control valves 3 can be adjusted in time. The two work together to ensure that the temperature inside the dyeing operation box 1 is always within a suitable range, ensuring the stability of the plant dyeing process and the dyeing quality.

[0027] Temperature monitor 4 is installed at the lower center of the dyeing operation box 1 for intelligent temperature control. This placement is both ingenious and practical, allowing for comprehensive and accurate perception of the overall temperature within the box. Monitor 4 continuously monitors temperature changes in real time, and promptly relays data to the control system if the temperature deviates from the preset optimal dyeing temperature range. Based on this feedback, the system intelligently adjusts the power of the heating element 2 or the opening / closing degree of the airflow control valve 3 to precisely regulate the temperature within the box, ensuring it remains stable within the optimal dyeing temperature range. This effectively avoids adverse effects on plant dyeing results caused by excessively high or low temperatures, guaranteeing stable and reliable dyeing quality and improving overall dyeing efficiency.

[0028] The input connecting pipe 5 is rotatably set inside the rotating mounting hole and connected to the outside; the U-shaped mounting pipe 6 is fixedly connected to the input connecting pipe 5 at its center position, and has output mounting holes evenly designed on its inner side; both sides of the U-shaped mounting pipe 6 are fixedly set with positioning mounting plates 601, and rotating positioning holes are evenly designed on the positioning mounting plates 601; one end of the atomizing nozzle 8 is designed with rotating connecting shafts 801 that are rotatably connected to the rotating positioning holes on both sides.

[0029] The input connecting pipe 5 is rotatably installed in the rotating mounting hole of the dyeing operation box 1 and connected to the outside, allowing for the flexible introduction of external dyeing media such as liquids or gases. Its fixedly connected U-shaped mounting pipe, through the evenly distributed output mounting holes on its inner side, enables the introduced media to diffuse relatively evenly. The positioning mounting plates 601 on both sides inside the U-shaped mounting pipe, and the evenly designed rotating positioning holes on the plates, are rotatably connected to the rotating connecting shafts 801 on both sides of one end of the atomizing nozzle 8. This structure not only provides a stable installation position for the atomizing nozzle 8, but also allows the atomizing nozzle 8 to flexibly rotate its angle according to actual dyeing needs, thereby more accurately and comprehensively spraying the media into the dyeing operation box 1 in the form of atomization, effectively improving the uniformity and efficiency of plant dyeing and optimizing the dyeing effect.

[0030] The output hose 7 is fixedly connected to the output mounting hole to improve the convenience of pigment output; the atomizing nozzle 8 is located at the other end of the output hose 7 for dyeing plants. The fixed connection between the output hose 7 and the output mounting hole creates a bridge for the medium to be transported from the inside to the outside of the U-shaped mounting tube 6, greatly improving the convenience of outputting dyeing media such as pigments. The medium can be flexibly guided to the required location without being restricted by a fixed path. The atomizing nozzle 8 located at the other end of the output hose 7 can atomize the output dyeing medium, so that the pigment is evenly sprayed on the plant surface in the form of tiny particles. The two work together to not only make the delivery of dyeing media more flexible and efficient, but also ensure that the dyeing medium evenly covers the plant, effectively improving the uniformity and quality of plant dyeing, and providing a more precise and convenient operation method for manual plant dyeing.

[0031] Angle adjustment structure 9 is slidably installed on both sides of the U-shaped mounting tube and rotatably connected to the atomizing nozzle 8 respectively; the angle adjustment structure 9 includes: The lifting control frame 901 is slidably mounted in the vertical sliding grooves opened on both sides of the U-shaped mounting tube 6. Linkage sliding holes are evenly opened on both sides, and a lifting threaded hole is designed in the center. The linear screw motor 902 is fixedly installed on the upper ends of both sides of the U-shaped mounting tube 6, and its output end is threadedly connected to the lifting threaded hole. Lifting connecting rods 802 are welded and fixed on both sides of the other end of the atomizing nozzle 8, and the lifting connecting rods 802 are slidably connected to the linkage sliding holes.

[0032] Angle-adjusting structure 9 is slidably installed on both sides of the U-shaped mounting tube and rotatably connected to the atomizing nozzle 8. This design provides flexible and stable support for adjusting the angle of the atomizing nozzle 8. The lifting control frame 901 is slidably fitted into the vertical groove of the U-shaped mounting tube. The linear screw motor 902 is fixed to the upper ends of both sides of the U-shaped mounting tube, and its output end is threadedly connected to the lifting threaded hole of the lifting control frame 901. The vertical position of the lifting control frame 901 can be precisely controlled by the operation of the linear screw motor 902. The lifting connecting rod 802, welded and fixed to both sides of the other end of the atomizing nozzle 8, is slidably connected to the linkage sliding holes on both sides of the lifting control frame 901. When the lifting control frame 901 rises or falls, it drives the lifting connecting rod 802 to move, thereby causing the atomizing nozzle 8 to rotate around the rotating connection point, achieving flexible angle adjustment. This allows the atomizing nozzle 8 to dye the plants at the optimal angle, effectively improving the uniformity and coverage of the dyeing, and enhancing the dyeing effect.

[0033] The driving structure 10 is designed at the lower outer end of the dyeing operation box 1, and is used to drive the U-shaped mounting tube 6 to rotate. The driving structure 10 includes: The linkage gear ring 101 is welded and fixed at the opening of the U-shaped mounting tube 6 to drive the atomizing nozzle 8 to rotate; the drive motor 102 is set at one corner of the dyeing operation box 1, and its output end is fixedly equipped with a power gear that meshes with the linkage gear ring 101, which is the running power for the rotation of the U-shaped mounting tube 6; an annular mounting groove is opened on the lower inner surface of the dyeing operation box 1, the linkage gear ring 101 is rotatably installed in the annular mounting groove, and the drive motor 102 is embedded and fixed on one side of the annular mounting groove.

[0034] The drive structure 10 is designed on the lower outer side of the dyeing operation box 1. Its core function is to drive the U-shaped mounting tube 6 to rotate. The linkage gear ring 101 is welded to the opening of the U-shaped mounting tube 6 and meshes with the power gear at the output end of the drive motor 102. When the drive motor 102 runs, the power is transmitted to the linkage gear ring 101 through gear meshing, thereby driving the U-shaped mounting tube 6 to rotate, causing the atomizing nozzle 8 mounted on it to rotate accordingly. The annular mounting groove opened on the lower surface of the dyeing operation box 1 provides a stable rotation space for the linkage gear ring 101, ensuring its smooth rotation. The drive motor 102 is embedded and fixed on one side of the annular mounting groove, which saves space and ensures a compact structure. This structure allows the atomizing nozzle 8 to dye the plants from all directions and multiple angles, effectively improving the uniformity and comprehensiveness of dyeing, and improving the efficiency and quality of plant dyeing.

[0035] When using this device: First, place the plant to be dyed in a suitable position inside the dyeing operation box 1. Then, inject the required dyeing pigment into the device through the input connecting pipe 5. The pigment flows into the U-shaped mounting pipe 6 through the input connecting pipe 5. At this time, the positioning mounting plate 601 inside the U-shaped mounting pipe 6 guides the flow of pigment. Meanwhile, the atomizing nozzle 8 installed at one end of the output hose 7 has been adjusted to a suitable angle through the angle adjustment structure 9.

[0036] The heating element 201 and the heating turbine wire 202 are turned on. The heating element 201 heats the surrounding area of ​​the dyeing operation box 1, while the heating turbine wire 202 regulates the temperature of the upper and lower parts of the device, so that the entire dyeing operation box 1 reaches a constant temperature environment suitable for plant dyeing. The temperature monitor 4 monitors the internal temperature of the device in real time and intelligently controls the working status of the heating element 201 and the heating turbine wire 202 according to the preset temperature range to ensure that the temperature is stable within the optimal dyeing temperature range.

[0037] When it is necessary to adjust the spray angle of the atomizing nozzle 8, the linear screw motor 902 is started. The output end of the linear screw motor 902 is threadedly connected to the lifting threaded hole in the center of the lifting control frame 901, which drives the lifting control frame 901 to slide in the vertical sliding grooves on both sides of the U-shaped mounting tube 6. Since the lifting connecting rods 802 on both sides of the other end of the atomizing nozzle 8 are slidably connected to the linkage sliding holes on both sides of the lifting control frame 901, the lifting connecting rods 802 will move during the sliding of the lifting control frame 901, thereby realizing the adjustment of the angle of the atomizing nozzle 8, so that the pigment can be sprayed more evenly on the plant surface.

[0038] When it is necessary to dye different parts of the plant or change the dyeing area, the drive motor 102 is started. The power gear at the output end of the drive motor 102 meshes with the linkage gear ring 101 welded and fixed at the opening of the U-shaped mounting tube 6, driving the linkage gear ring 101 to rotate in the annular mounting groove opened on the lower surface of the dyeing operation box 1, thereby driving the entire U-shaped mounting tube 6 to rotate, so that the atomizing nozzle 8 can rotate around the plant for dyeing, improving dyeing efficiency and uniformity.

[0039] During the dyeing process, if the internal temperature of the device becomes too high, the airflow control valve 3 will automatically open to a certain extent based on the signal from the temperature monitor 4, dissipating heat through the connecting holes at the four corners on both sides of the dyeing operation box 1 to ensure that the internal temperature of the device does not become too high and affect the dyeing effect. When the temperature drops to a suitable range, the airflow control valve 3 will automatically close or reduce its opening degree to maintain a constant temperature environment inside the device. After dyeing is completed, turn off the power to all components and remove the dyed plants.

[0040] The foregoing has shown and described the basic principles and main features of this invention, as well as its advantages. Those skilled in the art should understand that this invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this invention. Various changes and modifications can be made to this invention without departing from its spirit and scope. All such changes and modifications fall within the scope of this invention as defined by the appended claims and their equivalents.

Claims

1. A high-efficiency hand-dyed plant container with constant temperature control, characterized in that, include: The dyeing operation box (1) is the main operating component of the device, and heating components (2) are arranged around it. A rotating mounting hole is provided at the center of the upper end. Airflow control valves (3) are installed on both sides of the dyeing operation box (1) to control the heat dissipation effect of the device; A temperature monitor (4) is installed at the lower center of the dyeing operation box (1) for intelligent control of the internal temperature of the device; The input connecting pipe (5) is rotatably installed inside the rotating mounting hole and communicates with the outside. The U-shaped mounting tube (6) is fixedly connected to the input connecting tube (5) at its center, and has output mounting holes evenly designed on its inner side; The output hose (7) is fixedly connected to the output mounting hole to improve the convenience of pigment output; A misting nozzle (8) is located at the other end of the output hose (7) and is used to dye plants; Angle adjustment structure (9) is slidably installed on both sides of the U-shaped mounting tube and rotatably connected to the atomizing nozzle (8); The drive structure (10) is designed at the lower outer end of the dyeing operation box (1) to drive the U-shaped mounting tube (6) to rotate.

2. The high-efficiency hand-dyed plant container with constant temperature control according to claim 1, characterized in that, The heating component (2) includes: Electric heating tubes (201) are arranged around the dyeing operation box (1) to control the temperature around the device; The electric heating turbine wire (202) is embedded in the electric heating mounting slots opened at both ends of the dyeing operation box (1) and is used to regulate the temperature of the upper and lower parts of the device.

3. The high-efficiency hand-dyed plant container with constant temperature control according to claim 1, characterized in that: The dyeing operation box (1) has connection through holes at both sides and four corners. The airflow control valve (3) is fixedly connected to the connection through holes. The dyeing operation box (1) has a monitoring installation slot at the lower center of the interior. The temperature monitor (4) is embedded in the monitoring installation slot.

4. The high-efficiency hand-dyed plant container with constant temperature control according to claim 1, characterized in that: The U-shaped mounting tube (6) has a positioning mounting plate (601) fixedly installed on both sides inside. Rotation positioning holes are uniformly designed on the positioning mounting plate (601). Rotation connecting shafts (801) that are rotatably connected to the rotation positioning holes are designed on both sides of one end of the atomizing nozzle (8).

5. The high-efficiency hand-dyed plant container with constant temperature control according to claim 1, characterized in that, The angle adjustment structure (9) includes: The lifting control frame (901) is slidably installed in the vertical sliding grooves opened on both sides of the U-shaped mounting tube (6), with linkage sliding holes evenly opened on both sides and a lifting threaded hole designed in the center. A linear screw motor (902) is fixedly installed on both sides of the upper end of the U-shaped mounting tube (6), and its output end is threadedly connected to the lifting threaded hole.

6. The high-efficiency hand-dyed plant container with constant temperature control according to claim 5, characterized in that: The other two ends of the atomizing nozzle (8) are welded and fixed with lifting connecting rods (802), and the lifting connecting rods (802) are slidably connected to the linkage sliding hole.

7. The high-efficiency hand-dyed plant container with constant temperature control according to claim 1, characterized in that, The driving structure (10) includes: The linkage gear ring (101) is welded and fixed at the opening of the U-shaped mounting tube (6) to drive the atomizing nozzle (8) to rotate; The drive motor (102) is located in one corner of the dyeing operation box (1), and its output end is fixedly equipped with a power gear that meshes with the linkage gear ring (101), which is the running power for the rotation of the U-shaped mounting tube (6).

8. A high-efficiency hand-dyed plant container with constant temperature control according to claim 7, characterized in that: The dyeing operation box (1) has an annular mounting groove on its lower inner surface. The linkage gear ring (101) is rotatably installed in the annular mounting groove, and the drive motor (102) is embedded and fixed on one side of the annular mounting groove.

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