A maltose fermentation device

Abstract

The present application relates to the technical field of malt sugar saccharification fermentation, and particularly relates to a malt sugar fermentation device, which comprises a fermentation tank body, a liftable telescopic pipe for discharging and a rotatable driving rod arranged in the fermentation tank body, a separation bucket with a filter screen is arranged on the outside of the driving rod, in the flowing process of liquid material in the fermentation tank body, solid material is blocked in the separation bucket by the filter screen, a mounting frame is symmetrically arranged on the driving rod outside the separation bucket, a plurality of mounting plates are symmetrically arranged on the driving rod inside the separation bucket, a rotatable rotating rod is arranged on the side away from the driving rod of the mounting frame and the mounting plate inside the separation bucket, and a scraper is sleeved on the rotating rod. Therefore, the mixture can be preliminarily filtered after the fermentation is completed, the preliminary solid-liquid separation is realized, and the mixture is respectively discharged, and the surface of the filter screen can be cleaned, so that the probability of filter screen blockage is reduced.

Description

Technical Field

[0001] This invention relates to the field of maltose saccharification and fermentation technology, and more particularly to a maltose fermentation apparatus. Background Technology

[0002] Maltose, a disaccharide widely used in food, medicine, and chemical industries, has a core industrial production process that includes key steps such as starch milk preparation, liquefaction, saccharification and fermentation, solid-liquid separation, purification, and concentration. Among these, the saccharification and fermentation process is the core link that determines the maltose conversion rate and product purity. In current maltose production, the saccharification and fermentation process is usually completed in a traditional fermentation tank. The core function of the fermentation tank is only to provide a constant temperature and sealed environment required for the enzymatic reaction, and it is equipped with a basic stirring device to ensure the uniformity of mixing between the material and the enzyme solution. After fermentation, the mixture obtained must first undergo solid-liquid separation to remove solid impurities before it can enter the subsequent decolorization, desalting, and concentration processes.

[0003] Currently, existing maltose fermentation equipment only performs the fermentation reaction function, while the separation function relies entirely on external equipment. This results in a large number of production line devices, a large floor space, and high initial investment costs. External separation equipment requires additional drive, stirring, and anti-clogging components, further increasing the complexity of the equipment and energy consumption. To overcome these problems, some fermentation devices have added simple filtration structures. However, the built-in filtration design still has significant shortcomings. Some designs only have a fixed filter screen inside the tank without a matching anti-clogging device, resulting in filter screen clogging. In addition, existing built-in filtration structures often cannot achieve separate discharge of solids and liquids. The separated solids still need to be manually cleaned and transported to a filter press, failing to truly simplify the process.

[0004] How to perform preliminary filtration of the mixture after fermentation to achieve initial solid-liquid separation and direct the liquids to discharge separately, and how to clean the filter screen surface to reduce the probability of filter clogging, has become a technical problem that needs to be solved.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0006] To address the aforementioned shortcomings, the present invention aims to provide a maltose fermentation device that can perform preliminary filtration of the mixture after fermentation, achieve preliminary solid-liquid separation and guide them to discharge separately, and clean the filter screen surface to reduce the probability of filter screen clogging.

[0007] To achieve the above objectives, the present invention provides a maltose fermentation device, including a fermentation tank body. The fermentation tank body is provided with a liftable telescopic tube for discharging materials and a rotatable drive rod. The drive rod is provided with a separator with a filter screen outside the drive rod. During the flow of liquid materials in the fermentation tank body, solid materials are blocked inside the separator by the filter screen.

[0008] The drive rod outside the separator is symmetrically provided with mounting frames, and the drive rod inside the separator is symmetrically provided with several mounting plates. The mounting frames and the mounting plates inside the separator are all provided with rotatable rotating rods on the side away from the drive rods, and scrapers are fitted on the rotating rods.

[0009] Rotating the drive rod, the mounting frame, mounting plate, and scraper mix the liquid and solid materials in the fermenter body. When the filter screen becomes clogged, rotating the drive rod and using the scraper to clean the clogged material from the filter screen.

[0010] According to the maltose fermentation apparatus of the present invention, each mounting frame is elastically connected with a mating block, and gears are sleeved on the rotating rod on the mounting frame and the rotating rod on the mounting plate near the mounting frame. Both ends of the mating block protrude from the mounting frame and are connected to racks that mesh with the gears. A liftable trigger block that mates with the mating block is sleeved on the drive rod.

[0011] According to the maltose fermentation apparatus of the present invention, both the end of the trigger block near the mating block and the end of the mating block near the trigger block are provided with arc surfaces.

[0012] According to the maltose fermentation apparatus of the present invention, one end of the separating tank is provided with a solid discharge pipe, and the fermentation tank body is provided with a liquid discharge pipe.

[0013] According to the maltose fermentation apparatus of the present invention, a positioning ring is provided on the outside of the separating tank, the outer wall of the positioning ring is connected to the inner wall of the fermentation tank body, the solid discharge pipe passes through the positioning ring and extends out of the fermentation tank body, and the liquid discharge pipe passes through the positioning ring and communicates with the inside of the fermentation tank body.

[0014] According to the maltose fermentation apparatus of the present invention, the fermentation tank body is provided with a fixed plate, the fixed plate is provided with a fixed seat, the telescopic tube includes an inner tube and an outer tube that are sleeved together, the outer tube is provided with a fixed block, the fixed block is elastically connected to the fixed seat, the fixed plate is provided with a liftable lifting plate, the end of the lifting plate near the fixed block is provided with a plurality of top blocks that can move toward the fixed block, and the fixed block is provided with a plurality of mating grooves that cooperate with the top blocks.

[0015] According to the maltose fermentation apparatus of the present invention, one end of the fixing block is inserted into the fixing seat, the fixing block in the fixing seat is symmetrically provided with inserts, the fixing seat is provided with a slot that cooperates with the inserts, the inserts are slidably disposed in the slots, and an elastic element is provided between the fixing block and the fixing seat.

[0016] According to the maltose fermentation apparatus of the present invention, the mounting frames are all L-shaped structures. While the driving rod drives the mounting frames to rotate, the mounting frames scrape the inner wall of the fermentation tank body.

[0017] According to the maltose fermentation apparatus of the present invention, a flexible layer is provided at one end of the mounting frame near the inner wall of the fermentation tank and at one end of the scraper that contacts the separator.

[0018] According to the maltose fermentation apparatus of the present invention, a shield is provided on the outside of the mounting frame and the mounting plate having gears, and the shield is fixed on the mounting frame.

[0019] The purpose of this invention is to provide a maltose fermentation device, including a drive rod that rotates a mounting frame, mounting plate, and scraper to mix liquid and solid materials within the fermentation tank. When the filter screen becomes clogged, one end of the scraper contacts the filter screen, and the scraper cleans the clogged material during the rotation of the drive rod. The filter screen facilitates the exchange of liquid materials between the fermentation tank and the separator, ensuring that solid materials are always blocked by the filter screen within the separator during the flow of liquid materials. A lifting plate lowers the outer pipe, allowing one end of the outer pipe to be inserted into the separator for material guidance.

[0020] In summary, the beneficial effects of the present invention are: it can perform preliminary filtration of the mixture after fermentation, achieve preliminary solid-liquid separation and guide them to discharge separately, and can clean the surface of the filter screen, reducing the probability of filter screen clogging. Attached Figure Description

[0021] Figure 1 This is a structural diagram of the present invention;

[0022] Figure 2 This is a structural diagram of the inside of the fermenter.

[0023] Figure 3 This is a cross-sectional view of the trigger block;

[0024] Figure 4 This is a cross-sectional view of the expansion joint;

[0025] Figure 5 This is a structural diagram of the shielding area;

[0026] Figure 6 Here is a structural diagram of the trigger block;

[0027] Figure 7 This is a structural diagram of the interior of the divider.

[0028] In the diagram: 1-Fermentation tank body, 11-Telescopic pipe, 111-Inner pipe, 112-Outer pipe, 12-Liquid discharge pipe, 13-Solid discharge pipe, 14-Fixing plate, 141-Allowing hole, 142-Fixing seat, 15-Heat exchange jacket, 2-Drive rod, 21-Trigger block, 22-Drive component, 3-Divider tank, 31-Filter screen, 32-Positioning ring, 4-Mounting frame, 41-Matching block, 411-Rack, 42-Rotating rod, 421-Gear, 43-Scraper, 44-Mounting plate, 45-Shielding cover, 5-Lifting plate, 51-Top block, 52-Telescopic component, 6-Fixing block, 61-Matching groove, 7-Elastic component. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0030] In the description of this invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this invention can be understood according to the specific circumstances.

[0032] See Figures 1-7This invention provides a maltose fermentation device, including a fermentation tank body 1. The structure of the fermentation tank body 1 is the same as that of the prior art, including a heat exchange jacket 15, sensors (such as pH sensors, sugar content / DE value sensors, etc.), manholes, cleaning spray heads, and sight glasses. Those skilled in the art can flexibly select according to actual conditions. It is a mature prior art in the field, and its specific structure and working principle will not be described in detail here. The fermentation tank body 1 is provided with a liftable telescopic tube 11 for feeding materials. The fermentation tank body 1 is provided with a rotatable drive rod 2 (a drive component 22 is provided on the outside of the fermentation tank body 1, and the output end of the drive component 22 passes into the inside of the fermentation tank body 1 and connects to the drive rod 2, and the drive component 22 can drive the drive rod 2 to rotate). The outside of the drive rod 2 is provided with a separator 3 for storing solid materials. The separator 3 is provided with a filter screen 31 for blocking solid materials. The filter screen 31 facilitates the exchange of liquid materials between the inside of the fermentation tank body 1 and the inside of the separator 3. During the flow of liquid materials, solid materials are always blocked by the filter screen 3. 1. A solid discharge pipe 13 for discharging solid materials is provided at one end of the partition tank 3. A liquid discharge pipe 12 for discharging liquid materials is provided inside the fermentation tank body 1 outside the partition tank 3. A mounting frame 4 is symmetrically provided on the outside of the drive rod 2 outside the partition tank 3. Several mounting plates 44 are symmetrically provided on the drive rod 2 inside the partition tank 3. A rotatable rotating rod 42 is passed through the mounting frame 4 and the mounting plate 44 inside the partition tank 3 on the side away from the drive rod 2. A scraper is fitted on the rotating rod 42. 43. The scraper 43 can rotate with the rotating rod 42; the rotating drive rod 2 drives the mounting frame 4, mounting plate 44 and scraper 43 to rotate, stirring and mixing the liquid and solid materials in the fermenter body 1. When the filter screen 31 may become clogged, the rotating rod 42 is rotated (to avoid excessive friction when contacting, the drive rod 2 can also be stopped first), so that one end of the scraper 43 contacts the filter screen 31. During the rotation of the drive rod 2, the scraper 43 is used to clean the clogged material on the filter screen 31.

[0033] See Figures 5-7Specifically, all mounting frames 4 are L-shaped structures, and each mounting frame 4 is elastically connected with a mating block 41 (each mating block 41 inside the mounting frame 4 has symmetrically arranged protrusions, and each mounting frame 4 has a groove that mates with the protrusions; the protrusions are slidably disposed in the grooves, and each protrusion and groove has an elastic element 7). Gears 421 are fitted on the rotating rod 42 on the mounting frame 4 and on the mounting plate 44 near the mounting frame 4 (this mounting plate 44 is located on the drive rod 2 outside the separator 3). The gears 421 can drive the rotating rod 42 to rotate. The upper and lower ends of the mating block 41 (the end furthest from the separator 3 and the end closest to the separator 3) protrude from the mounting frame 4 and connect to the rack 411 that meshes with the gear 421. The drive rod 2 is fitted with a height-adjustable mechanism that mates with the mating block 41. The trigger block 21 is lowered, and the trigger block 21 comes into contact with the mating block 41. As the trigger block 21 continues to descend, the mating block 41 moves away from the drive rod 2 (while squeezing the elastic element 7). The mating block 41 drives the rack 411 to move, the rack 411 drives the gear 421 to rotate, and drives the rotating rod 42 to rotate, thereby driving the scraper 43 to rotate. The angle of the scraper 43 is adjusted, causing the trigger block 21 to rise. After the trigger block 21 disengages from the mating block 41, the mating block 41 returns to its initial position under the action of the elastic element 7, thereby driving the scraper 43 to return to its initial angle. (Those skilled in the art should reasonably select the elastic force of the elastic element 7 and the meshing clearance of the gear 421 and the rack 411 according to the actual situation to prevent the gear 421 and the rack 411 from jamming.)

[0034] See Figures 1-7 Preferably, both the end of the trigger block 21 near the mating block 41 and the end of the mating block 41 near the trigger block 21 are provided with arc surfaces to reduce the friction generated during contact.

[0035] See Figure 2 , Figure 5 , Figure 6 and Figure 7 Specifically, a positioning ring 32 is fitted around the outside of the separator 3. The outer wall of the positioning ring 32 is connected to the inner wall of the fermentation tank body 1. The solid discharge pipe 13 passes through the positioning ring 32 and extends out of the fermentation tank body 1. The liquid discharge pipe 12 passes through the positioning ring 32 and connects to the inside of the fermentation tank body 1. By using the liquid discharge pipe 12 and the solid discharge pipe 13, the solid and liquid are separated and discharged. At the same time, the positioning ring 32 can enhance the stability of the separator 3.

[0036] See Figures 1-4 Specifically, the fermenter body 1 is equipped with a fixing plate 14 (see...). Figure 2The fixing plate 14 divides the interior of the fermenter body 1 into two areas. The fixing plate 14 is located above the mounting frame and has a clearance hole 141 that allows the trigger block 21 to pass through. The fixing plate 14 has a fixing seat 142. The telescopic tube 11 includes an inner tube 111 and an outer tube 112 that are sleeved together (the outer tube 112 is sleeved outside the inner tube 111, and the outer tube 112 can slide outside the inner tube 111 without detaching from the inner tube 111). A fixing block 6 is sleeved outside the outer tube 112 and is elastically connected to the fixing seat 142. The fixing block 6 can drive the outer tube 112 to move. The fixing plate 14 has a lifting plate 5 that can be raised and lowered (the outside of the fermenter body 1 has a telescopic member 52, and the output end of the telescopic member 52 extends into the fermenter). The main body 1 is internally connected to a lifting plate 5, and the telescopic component 52 can drive the lifting plate 5 to rise and fall. The lifting plate 5 is provided with several top blocks 51 that can move toward the fixed block 6 at one end. (The lifting plate 5 is provided with several electric cylinders, and the output ends of the electric cylinders are all connected to the top blocks 51. The electric cylinders can all drive the top blocks 51 to move toward the side closer to the fixed block 6.) The fixed block 6 is provided with several mating grooves 61 that cooperate with the top blocks 51. In the natural state, the fixed block 6 and the outer tube 112 are far away from the fixed plate 14. The lifting plate 5 is raised so that the top blocks 51 are inserted into the mating grooves 61. Then the lifting plate 5 is lowered, and the lifting plate 5 drives the fixed block 6 and the outer tube 112 to fall, so that one end of the outer tube 112 is inserted into the separator 3 to guide the material and facilitate the material to enter the separator 3.

[0037] See Figures 1-4 Specifically, one end of the fixing block 6 is inserted into the fixing seat 142. The fixing block 6 inside the fixing seat 142 is symmetrically provided with inserts. The fixing seat 142 is provided with slots that cooperate with the inserts. The inserts are slidably disposed in the slots. An elastic element 7 is provided between the fixing block 6 and the fixing seat 142 (the connection method between the fixing block 6 and the fixing seat 142 is similar to the connection method between the mating block 41 and the mounting frame 4). In its natural state, the elastic element 7 uses its elastic force to pull up the fixing block 6 and the outer tube 112 to avoid interfering with the movement of the mounting frame 4 and other structures.

[0038] See Figures 1-4 Specifically, the trigger block 21 is connected to the lifting plate 5. The lifting plate 5 can provide the lifting power for the trigger block 21, saving power. During the process of the lifting plate 5 driving the fixed block 6 and the outer tube 112 to descend, although the trigger block 21 may cooperate with the mating block 41, it does not affect the unloading process. In actual use, those skilled in the art can reasonably adjust the moving distance of the trigger block 21 and the lifting plate 5 according to the actual situation.

[0039] See Figures 1-7Preferably, the end of the mounting frame 4 near the inner wall of the fermenter body 1 and the end of the scraper 43 in contact with the separator 3 are both provided with a flexible layer, such as a silicone layer. The material of the flexible layer can be food-grade silicone (e.g., Shore hardness 50~60°) to reduce the collision and friction when in direct contact.

[0040] See Figures 1-7 Preferably, one end of the scraper 43 on the rotating rod 42 inside the separator 3 is rotatably connected to the mounting plate 44, and one end of the scraper 43 on the rotating rod 42 outside the separator 3 is rotatably connected to the mounting frame 4. This provides a supporting force for the scraper 43 without affecting its rotation angle, thereby improving the stability of the scraper 43's movement.

[0041] See Figures 1-7 Preferably, a shield 45 is fitted over the mounting frame 4 and the mounting plate 44 with gear 421. The shield 45 is fixed to the mounting frame 4. The shield 45 can cover the gear 421 and rack 411 and other structures, protecting these covered structures. The shield 45 is provided with a clearance groove that allows the trigger block 21 to pass through. The shield 45 will not affect the mating of the mating block 41 and the trigger block 21.

[0042] See Figures 1-7 Preferably, the elastic element 7 is a spring, which provides return power.

[0043] See Figures 1-7 Preferably, the drive component 22 is a rotary motor and the telescopic component 52 is an electric cylinder, which provides power to the device.

[0044] See Figures 1-7 Preferably, during actual installation, those skilled in the art should select other conventional structures required for the operation of the fermenter body 1 (such as valves on the liquid discharge pipe 12 and solid discharge pipe 13) according to the site conditions to ensure that the device can operate normally, and to perform waterproofing or sealing treatment according to the working environment. This is a mature existing technology in the field, and the specific means will not be described in detail here.

[0045] See Figures 1-7In use, the lifting plate 5 is raised, allowing the top block 51 to insert into the mating groove 61. Then, the lifting plate 5 is lowered, causing the fixing block 6 and the outer pipe 112 to descend, thus inserting one end of the outer pipe 112 into the separator 3. All solid and liquid materials pass through the inner pipe 111 and the outer pipe 112 before entering the separator 3. After feeding, the lifting plate 5 raises the outer pipe 112, simultaneously disengaging the top block 51 from the mating groove 61. The drive rod 2 rotates the mounting frame 4, mounting plate 44, and scraper 43, mixing the liquid and solid materials within the fermenter body 1 (the mounting frame 4 simultaneously scrapes the inner wall of the fermenter body 1 to prevent material from adhering to the inner wall). When the filter screen... When a blockage occurs on filter screen 31, the lifting plate 5 drives the trigger block 21 to descend. The trigger block 21 contacts the mating block 41 and drives the rack 411 to move, which in turn drives the rotating rod 42 to rotate, thereby driving the scraper 43 to rotate. The angle of the scraper 43 is adjusted so that one end of the scraper 43 contacts the filter screen 31. During the rotation of the drive rod 2, the scraper 43 is used to clean the material blocked on the filter screen 31. After fermentation, the liquid discharge pipe 12 and the solid discharge pipe 13 are used to separate the solid and liquid and discharge them. The filter screen 31 can intercept large impurities. Although the solid material in the separator 3 still contains some liquid, the solid content has increased from 5% to 8% to 20% to 30%. At this time, the filter residue is introduced into the filter press, which is equivalent to reducing the load on the filter press.

[0046] This invention provides a maltose fermentation device, including a drive rod that rotates a mounting frame, mounting plate, and scraper to mix liquid and solid materials within the fermentation tank. When the filter screen becomes clogged, one end of the scraper contacts the screen, and during the rotation of the drive rod, the scraper cleans the clogged material. The filter screen facilitates the exchange of liquid materials between the fermentation tank and the separating tank. During the flow of liquid materials, solid materials are consistently blocked by the filter screen within the separating tank. A lifting plate lowers an outer tube, allowing one end of the outer tube to be inserted into the separating tank to guide the materials. In summary, the advantages of this invention are: it enables preliminary filtration of the mixture after fermentation, achieving initial solid-liquid separation and directing the liquids separately; and it allows for cleaning of the filter screen surface, reducing the probability of filter screen clogging.

[0047] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A maltose fermentation apparatus, characterized in that, The fermenter includes a fermenter body, which is equipped with a liftable telescopic tube for feeding and a rotatable drive rod. The drive rod is equipped with a separator with a filter screen. During the flow of liquid materials in the fermenter body, solid materials are blocked inside the separator by the filter screen. The drive rod outside the separator is symmetrically provided with mounting frames, and the drive rod inside the separator is symmetrically provided with several mounting plates. The mounting frames and the mounting plates inside the separator are all provided with rotatable rotating rods on the side away from the drive rods, and scrapers are all fitted on the rotating rods. Rotating the drive rod, the mounting frame, mounting plate, and scraper mix the liquid and solid materials in the fermenter body. When the filter screen becomes clogged, rotating the drive rod and using the scraper to clean the clogged material from the filter screen.

2. The maltose fermentation apparatus according to claim 1, characterized in that, Each mounting frame is elastically connected with a mating block. Gears are fitted on the rotating rod on the mounting frame and the rotating rod on the mounting plate near the mounting frame. Both ends of the mating block protrude from the mounting frame and are connected to racks that mesh with the gears. A liftable trigger block that mates with the mating block is fitted on the drive rod.

3. The maltose fermentation apparatus according to claim 2, characterized in that, Both the end of the trigger block near the mating block and the end of the mating block near the trigger block have curved surfaces.

4. The maltose fermentation apparatus according to claim 1, characterized in that, One end of the separator is equipped with a solid discharge pipe, and the fermentation tank body is equipped with a liquid discharge pipe.

5. The maltose fermentation apparatus according to claim 4, characterized in that, The outer side of the separator is fitted with a positioning ring, the outer wall of which is connected to the inner wall of the fermentation tank body. The solid discharge pipe passes through the positioning ring and extends out of the fermentation tank body, while the liquid discharge pipe passes through the positioning ring and connects to the inside of the fermentation tank body.

6. The maltose fermentation apparatus according to claim 1, characterized in that, The fermenter body is provided with a fixed plate, the fixed plate is provided with a fixed seat, the telescopic tube includes an inner tube and an outer tube that are sleeved together, the outer tube is provided with a fixed block, the fixed block is elastically connected to the fixed seat, the fixed plate is provided with a liftable lifting plate, the end of the lifting plate near the fixed block is provided with several top blocks that can move toward the fixed block, and the fixed block is provided with several mating grooves that cooperate with the top blocks.

7. The maltose fermentation apparatus according to claim 6, characterized in that, One end of the fixing block is inserted into the fixing seat. The fixing block inside the fixing seat is symmetrically provided with inserts. The fixing seat is provided with a slot that cooperates with the inserts. The inserts are slidably disposed in the slots. An elastic element is provided between the fixing block and the fixing seat.

8. The maltose fermentation apparatus according to claim 1, characterized in that, All mounting frames are L-shaped structures. While the drive rod rotates the mounting frame, the mounting frame scrapes the inner wall of the fermenter body.

9. The maltose fermentation apparatus according to claim 8, characterized in that, The mounting frame is provided with a flexible layer at the end near the inner wall of the fermenter body and at the end where the scraper contacts the separator.

10. The maltose fermentation apparatus according to claim 2, characterized in that, A shield is fitted over the mounting frame and the gear-equipped mounting plate, and the shield is fixed to the mounting frame.

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