Load balancer with orifice protection

Abstract

The utility model relates to the field of load balancers, and discloses a load balancer with orifice protection, which comprises a load balancer main body, a display is arranged at one side of the center of the front end face of the load balancer main body, and a control button is arranged at the center of the front end face of the load balancer main body. And a plurality of connecting holes are transversely arranged at one side of the center of the front end surface of the load balancer main body. According to the utility model, through the combination of the electric telescopic rod and the orifice baffle plate, the automatic protection of the connecting hole is realized, when the connecting hole is not used, the electric telescopic rod extends to push the orifice baffle plate to shield the connecting hole, thereby effectively preventing dust, water vapor and other impurities from entering and protecting internal connecting parts, and when the connecting hole is used, the telescopic rod shrinks and the orifice baffle plate descends; according to the automatic control mechanism, the operation convenience is improved, the service life of the load balancer is prolonged, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of load balancers, in particular to a load balancer with orifice protection. Background Art

[0002] A load balancer is a network device that can distribute network requests to a group of servers to improve the availability and performance of the system. When dealing with a large amount of network traffic, the load balancer needs to ensure load balancing among servers, avoid single point of failure, and thus improve the stability and reliability of the overall system. During the use of the load balancer, it is very important to protect the orifice (i.e., the interface) from damage.

[0003] In the existing load balancers with orifice protection, protection requires manual operation (such as manually covering or opening the protection plate), which may lead to cumbersome operation, increase the risk of human error, and lack of rapid response in emergency situations. Moreover, during long-term operation, dust and impurities may accumulate inside the device, affecting the device performance and lifespan. Therefore, those skilled in the art have provided a load balancer with orifice protection to solve the problems raised in the above background art. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and a load balancer with orifice protection is proposed. Through the combination of an electric telescopic rod and an orifice baffle, automatic protection of the connection hole is achieved. When the connection hole is not in use, the electric telescopic rod extends to push the orifice baffle to block the connection hole, effectively preventing impurities such as dust and water vapor from entering and protecting the internal connection components. When in use, the telescopic rod contracts and the orifice baffle descends to expose the connection hole for use. This automatic control mechanism not only improves the operation convenience but also extends the service life of the load balancer and reduces the maintenance cost. Through a dust suction box, a box door, a dust suction pump, and a dust suction pipe, it is used to remove impurities such as dust around the connection hole. The dust suction pump generates suction through the dust suction pipe to suck the impurities into the dust suction box, reducing the impact of dust on internal electronic components and lowering the failure risk. This design ensures that the load balancer can operate continuously and stably, while reducing the maintenance requirements caused by dust accumulation. Through a dust suction box, a box door, a dust suction pump, and a dust suction pipe, it is used to remove impurities such as dust around the connection hole. The dust suction pump generates suction through the dust suction pipe to suck the impurities into the dust suction box, reducing the impact of dust on internal electronic components and lowering the failure risk. This design ensures that the load balancer can operate continuously and stably, while reducing the maintenance requirements caused by dust accumulation.

[0005] To achieve the above object, the utility model provides the following technical solutions: A load balancer with orifice protection, including a load balancer main body. On one side near the center of the front end face of the load balancer main body, there is a display. At the center of the front end face of the load balancer main body, there are control buttons. Horizontally arranged on one side near the center of the front end face of the load balancer main body are a plurality of connection holes. In front of the plurality of connection holes at the front of the front end face of the load balancer main body, there is a protection structure. In front of the protection structure on the front end face of the load balancer main body, there is a protective shell. At the center of the front inner wall of the protective shell, there is an orifice protection structure. On one side near the center of the upper end face of the load balancer main body, there is a dust suction structure. At the rear of the center of the upper end face of the protective shell, there is a card slot, and inside the card slot, there is a dust suction box;

[0006] Through the above technical solutions, through the combination of the electric telescopic rod and the orifice baffle, automatic protection of the connection holes is achieved. When the connection holes are not in use, the electric telescopic rod extends, pushing the orifice baffle to block the connection holes, effectively preventing impurities such as dust and water vapor from entering and protecting the internal connection components. When in use, the telescopic rod contracts, and the orifice baffle descends to expose the connection holes for use. This automatic control mechanism not only improves the convenience of operation but also extends the service life of the load balancer and reduces the maintenance cost. Through the dust suction box, the box door, the dust suction pump, and the dust suction pipe, it is used to remove impurities such as dust around the connection holes. The dust suction pump generates suction through the dust suction pipe and sucks the impurities into the dust suction box, reducing the impact of dust on the internal electronic components and reducing the risk of failure. This design ensures that the load balancer can operate continuously and stably, while reducing the maintenance requirements caused by dust accumulation. Through the dust suction box, the box door, the dust suction pump, and the dust suction pipe, it is used to remove impurities such as dust around the connection holes. The dust suction pump generates suction through the dust suction pipe and sucks the impurities into the dust suction box, reducing the impact of dust on the internal electronic components and reducing the risk of failure. This design ensures that the load balancer can operate continuously and stably, while reducing the maintenance requirements caused by dust accumulation.

[0007] Furthermore, the protection structure includes an elastic layer, a protection plate, and bolts. The elastic layer is arranged on the front end faces of the plurality of connection holes on one side near the center of the front end face of the load balancer main body. The protection plate is arranged at the center of the front end face of the elastic layer. Four bolts are arranged in a rectangular array on the front end face of the protection plate;

[0008] Through the above technical solutions, due to the fact that the elastic layer has a certain elasticity and flexibility, it can deform when subjected to external impact, thereby absorbing and buffering the impact force. The protection plate provides further physical protection for the connection holes. The four bolts are threadedly connected inside the load balancer main body, firmly fixing the protection plate and the elastic layer on the load balancer main body, protecting the connection components of the connection holes from damage, and facilitating the installation and disassembly of the protection structure when needed.

[0009] Furthermore, the orifice protection structure includes two connecting columns, a plurality of electric telescopic rods, and a plurality of orifice baffles. The two connecting columns are respectively arranged on both sides near the center of the upper inner wall of the front of the protective shell. The plurality of electric telescopic rods are respectively arranged horizontally in the front center of the lower inner wall of the protective shell. The plurality of orifice baffles are respectively arranged on the output ends of the plurality of electric telescopic rods;

[0010] Through the above technical solution, when the load balancer is in a state of not using the connection holes, the plurality of electric telescopic rods are in the extended state. The output ends of the electric telescopic rods push the plurality of orifice baffles upward. Under the action of the electric telescopic rods, the orifice baffles rise to block the plurality of connection holes on the front end face of the load balancer body. The two connecting columns play a role in assisting in supporting and stabilizing the protective shell. When the connection holes need to be used, the electric telescopic rods contract, driving the orifice baffles to descend, exposing the connection holes for connection operations. By controlling the lifting of the orifice baffles through the telescopic movement of the electric telescopic rods, the protection of the connection holes is achieved, and the service life of the load balancer body is effectively extended, and the maintenance cost is reduced.

[0011] Furthermore, the dust suction structure includes a dust suction box, a box door, a dust suction pump, and a dust suction pipe. The dust suction box is arranged on the front side of one side of the upper end face of the load balancer body. The box door is rotatably connected to the center of the rear end face of the box door. The dust suction pump is arranged at the center of the lower inner wall of the dust suction box. The dust suction pipe is arranged on the input end of the dust suction pump. The input end of the dust suction pipe sequentially passes through the upper inner wall of the dust suction box and the upper inner wall of the dust suction box and leads to the inside of the dust suction box;

[0012] Through the above technical solution, when the load balancer is working, the dust suction pump is started. The dust suction pump generates suction through the dust suction pipe. The suction generated by the dust suction pump acts on the dust suction box through the dust suction pipe, sucking dust and other impurities around the inside of the protective shell of the plurality of connection holes into the dust suction box, and then transporting them to the dust suction box through the dust suction pipe. The box door is rotatably connected to the center of the rear end face of the dust suction box. When a certain amount of dust and other impurities accumulate in the dust suction box, the box door can be opened for cleaning, reducing the influence of dust on the internal electronic components of the load balancer, reducing the risk of failures caused by dust accumulation, reducing the probability of failures caused by dust and other impurities, and ensuring that the load balancer body can operate continuously and stably.

[0013] Furthermore, the plurality of orifice baffles are respectively adapted to the plurality of connection holes;

[0014] Through the above technical solution, it is ensured that each connection hole can be effectively blocked, preventing impurities such as dust and water vapor from entering the connection holes, thereby protecting the connection components inside the connection holes and maintaining the stability and reliability of the connection.

[0015] Furthermore, the card slot is adapted to the dust suction box;

[0016] Through the above technical solution, the installation position of the dust suction box on the main body of the load balancer is ensured to be accurate and stable, and it will not shift due to the working vibration of the main body of the load balancer or slight external collision, ensuring the normal operation of the dust suction structure.

[0017] Further, one end of each of the four bolts sequentially penetrates through the front end face of the protection plate, the front end face of the elastic layer and the front end face of the main body of the load balancer and leads to the inside of the main body of the load balancer, and the ends are all threadedly connected inside the main body of the load balancer;

[0018] Through the above technical solution, it is ensured that the protection plate and the elastic layer are firmly and reliably installed on the main body of the load balancer, can withstand a certain external force impact without falling off, and provide continuous and effective protection for the connection holes.

[0019] Further, the material of the protection shell is stainless steel;

[0020] Through the above technical solution, the stainless steel material has high strength, corrosion resistance and wear resistance. The protection shell is made of stainless steel material and can maintain stable physical properties and appearance in the use environment of the main body of the load balancer.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the utility model, through the combination of the electric telescopic rod and the orifice baffle in the load balancer with orifice protection, automatic protection of the connection hole is realized. When the connection hole is not in use, the electric telescopic rod extends to push the orifice baffle to block the connection hole, effectively preventing impurities such as dust and water vapor from entering and protecting the internal connection components. When in use, the telescopic rod contracts and the orifice baffle descends to expose the connection hole for use. This automatic control mechanism not only improves the operation convenience, but also extends the service life of the load balancer and reduces the maintenance cost.

[0023] 2. In the utility model, through the dust suction box, the box door, the dust suction pump and the dust suction pipe, it is used to remove impurities such as dust around the connection hole. The dust suction pump generates suction through the dust suction pipe and sucks the impurities into the dust suction box, reducing the influence of dust on the internal electronic components and reducing the failure risk. This design ensures that the load balancer can operate continuously and stably, and at the same time reduces the maintenance requirements caused by dust accumulation.

[0024] 3. In the utility model, through the elastic layer and the protection plate, combined with bolt fixation, the elasticity and flexibility of the elastic layer can absorb and buffer external force impacts, reducing direct damage to the connection components. The protection plate provides additional physical protection to ensure the safety of the connection hole when it is impacted or polluted. This design not only improves the durability of the load balancer, but also facilitates the maintenance and replacement of the protection structure. Description of the Drawings

[0025] Figure 1 A three-dimensional view of a load balancer with orifice protection proposed by the present utility model;

[0026] Figure 2 A three-dimensional exploded view of a load balancer with orifice protection proposed by the present utility model;

[0027] Figure 3 A side sectional view of a load balancer with orifice protection proposed by the present utility model;

[0028] Figure 4 A front view of a load balancer with orifice protection proposed by the present utility model.

[0029] Legend:

[0030] 1. Load balancer main body; 2. Display; 3. Control button; 4. Connection hole; 5. Protection structure; 501. Elastic layer; 502. Protection plate; 503. Bolt; 6. Protection shell; 7. Orifice protection structure; 701. Connection column; 702. Electric telescopic rod; 703. Orifice baffle; 8. Dust suction structure; 801. Dust suction box; 802. Box door; 803. Dust suction pump; 804. Dust suction pipe; 9. Dust suction box; 10. Card slot. Specific implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0032] Refer to Figures 1-4, an embodiment provided by the present utility model: a load balancer with orifice protection, including a load balancer main body 1, a display 2 is provided at a position on one side near the center of the front end face of the load balancer main body 1, a control button 3 is provided at the center of the front end face of the load balancer main body 1, a plurality of connection holes 4 are arranged horizontally at a position on one side near the center of the front end face of the load balancer main body 1, a protection structure 5 is provided at the front end face of the plurality of connection holes 4 at a position in front of the center of the front end face of the load balancer main body 1, a protection shell 6 is provided at the front end face of the load balancer main body 1 in front of the protection structure 5, an orifice protection structure 7 is provided at the center of the front inner wall of the protection shell 6, a dust suction structure 8 is provided at a position on one side near the center of the upper end face of the load balancer main body 1, a card slot 10 is provided at a position in the center and at the back of the upper end face of the protection shell 6, a dust suction box 9 is provided inside the card slot 10. When the load balancer main body 1 is working, the display 2 is used to display information such as the working state of the load balancer main body 1, the control button 3 can be used to perform operation settings on the load balancer main body 1, the protection structure 5 plays a preliminary protection role for the plurality of connection holes 4 on the front end face of the load balancer main body 1, the protection shell 6 further provides external protection for the load balancer main body 1, the orifice protection structure 7 blocks the connection holes 4 to prevent dust and other impurities from entering. When the connection holes 4 need to be used, the connection holes 4 are exposed. The dust suction structure 8 sucks the dust and other impurities inside the protection shell 6 into the dust suction box 9 for processing through the dust suction structure 8. The dust suction box 9 is placed in the card slot 10 and will not be displaced due to the working vibration of the load balancer main body 1 or slight external collision, ensuring the normal operation of the dust suction structure 8.

[0033] The protection structure 5 includes an elastic layer 501, a protection plate 502 and bolts 503. The elastic layer 501 is arranged on the front end faces of the plurality of connection holes 4 at a position on one side near the center of the front end face of the load balancer main body 1. The protection plate 502 is arranged at the center of the front end face of the elastic layer 501. Four bolts 503 are arranged in a rectangular array on the front end face of the protection plate 502. Due to the certain elasticity and flexibility of the elastic layer 501, it can deform when subjected to external impact, thereby absorbing and buffering the impact force. The protection plate 502 provides further physical protection for the connection holes 4. The four bolts 503 are threadedly connected inside the load balancer main body 1 to firmly fix the protection plate 502 and the elastic layer 501 on the load balancer main body 1, protecting the connecting components of the connection holes 4 from damage and facilitating the installation and disassembly of the protection structure 5 when needed. One end of each of the four bolts 503 sequentially passes through the front end face of the protection plate 502, the front end face of the elastic layer 501 and the front end face of the load balancer main body 1 and leads to the inside of the load balancer main body 1, and the ends are all threadedly connected inside the load balancer main body 1 to ensure the firm and reliable installation of the protection plate 502 and the elastic layer 501 on the load balancer main body 1, capable of withstanding a certain external impact without falling off, providing continuous and effective protection for the connection holes 4.

[0034] The orifice protection structure 7 includes two connecting columns 701, a plurality of electric telescopic rods 702, and a plurality of orifice baffles 703. The two connecting columns 701 are respectively arranged on both sides near the center of the upper end of the front inner wall of the protective shell 6, the plurality of electric telescopic rods 702 are respectively arranged horizontally at the center of the front of the lower inner wall of the protective shell 6, and the plurality of orifice baffles 703 are respectively arranged on the output ends of the plurality of electric telescopic rods 702.

[0035] When the load balancer is in a state where the connection holes 4 are not in use, the plurality of electric telescopic rods 702 are in an extended state. The output ends of the electric telescopic rods 702 push the plurality of orifice baffles 703 upward. Under the action of the electric telescopic rods 702, the orifice baffles 703 rise to block the plurality of connection holes 4 on the front end face of the load balancer main body 1. The two connecting columns 701 play a role in assisting in supporting and stabilizing the protective shell 6. When the connection holes 4 need to be used, the electric telescopic rods 702 contract, driving the orifice baffles 703 to descend, exposing the connection holes 4 for connection operations. By controlling the lifting of the orifice baffles 703 through the telescopic movement of the electric telescopic rods 702, the protection of the connection holes 4 is achieved, and the service life of the load balancer main body 1 is effectively extended, and the maintenance cost is reduced. The plurality of orifice baffles 703 are respectively adapted to the plurality of connection holes 4 to ensure that each connection hole 4 can be effectively blocked, preventing impurities such as dust and water vapor from entering the connection holes 4, thereby protecting the connection components inside the connection holes 4 and maintaining the stability and reliability of the connection. The card slot 10 and the dust suction box 9 are mutually adapted to ensure that the installation position of the dust suction box 9 on the load balancer main body 1 is accurate and stable, and will not shift due to the working vibration of the load balancer main body 1 or external slight collisions, ensuring the normal operation of the dust suction structure 8. The material of the protective shell 6 is stainless steel. The stainless steel material has high strength, corrosion resistance, and wear resistance. The protective shell 6 is made of stainless steel material and can maintain stable physical properties and appearance in the use environment of the load balancer main body 1.

[0036] The dust suction structure 8 includes a dust suction box 801, a box door 802, a dust suction pump 803 and a dust suction pipe 804. The dust suction box 801 is arranged at a position close to the front side of the upper end face of the load balancer main body 1. The box door 802 is rotatably connected to the center of the rear end face of the box door 802. The dust suction pump 803 is arranged at the center of the lower inner wall of the dust suction box 801. The dust suction pipe 804 is arranged on the input end of the dust suction pump 803. The input end of the dust suction pipe 804 sequentially penetrates through the upper inner wall of the dust suction box 801 and the upper inner wall of the dust suction box 9 and leads to the inside of the dust suction box 9. When the load balancer is working, the dust suction pump 803 is started. The dust suction pump 803 generates suction force through the dust suction pipe 804. The suction force generated by the dust suction pump 803 acts on the dust suction box 9 through the dust suction pipe 804, sucking dust and other impurities around the inside of the protective shell 6 of the plurality of connection holes 4 into the dust suction box 9, and then conveying them into the dust suction box 801 through the dust suction pipe 804. The box door 802 is rotatably connected to the center of the rear end face of the dust suction box 801. When a certain amount of dust and other impurities accumulate in the dust suction box 801, the box door 802 can be opened for cleaning, reducing the impact of dust on the internal electronic components of the load balancer, reducing the risk of failures caused by dust accumulation, reducing the probability of failures caused by dust and other impurities, and ensuring that the load balancer main body 1 can operate continuously and stably.

[0037] Working principle: When the load balancer main body 1 is working, the display 2 is used to display information such as the working status of the load balancer main body 1. The control button 3 can be used to perform operation settings on the load balancer main body 1. Through the elastic layer 501 having certain elasticity and flexibility, it can deform when subjected to external impact, thereby absorbing and buffering the impact force. The protective plate 502 provides further physical protection for the connection hole 4. Four bolts 503 are threadedly connected inside the load balancer main body 1, firmly fixing the protective plate 502 and the elastic layer 501 on the load balancer main body 1, protecting the connecting components of the connection hole 4 from damage, and facilitating the installation and disassembly of the protection structure 5 when needed. The protective shell 6 further provides external protection for the load balancer main body 1. When the load balancer is in a state of not using the connection hole 4, a plurality of electric telescopic rods 702 are in an extended state. The output ends of the electric telescopic rods 702 push up a plurality of orifice baffles 703. The orifice baffles 703 rise under the action of the electric telescopic rods 702, covering the plurality of connection holes 4 on the front end face of the load balancer main body 1. The two connecting columns 701 play a role in assisting in supporting and stabilizing the protective shell 6. When the connection hole 4 needs to be used, the electric telescopic rods 702 contract, driving the orifice baffles 703 to descend, exposing the connection holes 4 for connection operations. By controlling the lifting of the orifice baffles 703 through the telescopic movement of the electric telescopic rods 702, the protection of the connection hole 4 is realized, and the service life of the load balancer main body 1 is effectively extended, and the maintenance cost is reduced.

[0038] When the load balancer is working, the dust suction pump 803 starts. The dust suction pump 803 generates suction through the dust suction pipe 804. The suction generated by the dust suction pump 803 acts on the dust suction box 9 through the dust suction pipe 804, sucking dust and other impurities around the inside of the protective shell 6 of the plurality of connection holes 4 into the dust suction box 9, and then conveying them into the dust suction box 801 through the dust suction pipe 804. The box door 802 is rotatably connected to the center of the rear end face of the dust suction box 801. When a certain amount of dust and other impurities accumulate in the dust suction box 801, the box door 802 can be opened for cleaning, reducing the impact of dust on the internal electronic components of the load balancer, reducing the risk of failures caused by dust accumulation, reducing the probability of failures caused by dust and other impurities, ensuring that the load balancer main body 1 can operate continuously and stably. The dust suction box 9 is placed in the card slot 10 and will not shift due to the working vibration of the load balancer main body 1 or external slight collisions, ensuring the normal operation of the dust suction structure 8.

[0039] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A load balancer with orifice protection, comprising a load balancer body (1), characterized in that: A display (2) is provided at one side of the center of the front end face of the load balancer body (1); a control button (3) is provided at the center of the front end face of the load balancer body (1); a plurality of connection holes (4) are arranged transversely at one side of the center of the front end face of the load balancer body (1); a protective structure (5) is provided at the front end face of the plurality of connection holes (4) at the front of the center of the front end face of the load balancer body (1); a protective shell (6) is provided at the front end face of the load balancer body (1) at the front end of the protective structure (5); a hole protection structure (7) is provided at the center of the front inner wall of the protective shell (6); a dust suction structure (8) is provided at one side of the center of the upper end face of the load balancer body (1); a card slot (10) is provided at the rear of the center of the upper end face of the protective shell (6); a dust suction box (9) is provided inside the card slot (10).

2. A load balancer with orifice protection according to claim 1, characterized in that: The protective structure (5) comprises an elastic layer (501), a protective plate (502) and bolts (503); the elastic layer (501) is arranged on the front end face of the load balancer body (1) at the center of the front end face of the plurality of connection holes (4) on one side; the protective plate (502) is arranged at the center of the front end face of the elastic layer (501); and four bolts (503) are arranged in a rectangular shape on the front end face of the protective plate (502).

3. A load balancer with orifice protection according to claim 1, characterized in that: The orifice protection structure (7) comprises two connecting columns (701), a plurality of electric telescopic rods (702) and a plurality of orifice baffles (703), the two connecting columns (701) being respectively arranged at both sides of the center of the upper end of the front inner wall of the protective shell (6), the plurality of electric telescopic rods (702) being respectively arranged in a transverse arrangement at the front center of the lower inner wall of the protective shell (6), and the plurality of orifice baffles (703) being respectively arranged at the output ends of the plurality of electric telescopic rods (702).

4. A load balancer with orifice protection according to claim 1, characterized in that: The dust suction structure (8) comprises a dust suction box (801), a box door (802), a dust suction pump (803) and a dust suction pipe (804); the dust suction box (801) is arranged at the front of one side of the upper end surface of the load balancer body (1); the box door (802) is rotatably connected to the center of the rear end surface of the box door (802); the dust suction pump (803) is arranged at the center of the lower inner wall of the dust suction box (801); the dust suction pipe (804) is arranged at the input end of the dust suction pump (803); the input end of the dust suction pipe (804) passes through the upper inner wall of the dust suction box (801) and the upper inner wall of the dust suction box (9) in sequence and passes into the interior of the dust suction box (9).

5. A load balancer with orifice protection according to claim 3, characterized in that: The plurality of orifice baffles (703) are respectively adapted to fit the plurality of connection holes (4).

6. A load balancer with orifice protection according to claim 1, characterized in that: The card slot (10) and the dust collection box (9) are adapted to each other.

7. A load balancer with orifice protection according to claim 2, characterized in that: One end of each of the four bolts (503) passes through the front end surface of the protective plate (502), the front end surface of the elastic layer (501) and the front end surface of the load balancer body (1) in sequence to reach the interior of the load balancer body (1), and the end portions are all threadedly connected to the interior of the load balancer body (1).

8. A load balancer with orifice protection according to claim 1, characterized in that: The protective shell (6) is made of stainless steel.

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