High efficiency paper tape filter
By using a positive pressure inlet and limiting mechanism, the problem of clogging in the paper tape filter is solved, the filtration efficiency is improved, the equipment cost is reduced, and the service life of the paper tape is extended.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG LUHONG TECHNOLOGY CO LTD
- Filing Date
- 2025-06-05
- Publication Date
- 2026-06-09
AI Technical Summary
Existing paper tape filters are prone to clogging by sludge or waste wax when processing cutting fluid or release agent, resulting in low filtration efficiency and excessive paper tape consumption. Furthermore, negative pressure filtration equipment is expensive and requires strict vacuum sealing.
The positive pressure liquid feeding method overcomes the resistance of sludge or waste wax on the paper tape by using positive pressure liquid feeding, thereby improving the feeding efficiency. The filter chamber between the pressure cap and the paper tape utilizes positive pressure liquid feeding, combined with a limiting mechanism and guide rollers, to achieve the positioning and guidance of the paper tape.
It improves liquid filtration efficiency, reduces paper tape consumption, lowers equipment costs, and achieves efficient filter residue treatment and extends the service life of the paper tape.
Smart Images

Figure CN224331669U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of paper tape filter machines, and more particularly to the field of high-efficiency paper tape filter machines. Background Technology
[0002] Existing paper tape filters typically rely on gravity flow of liquid, filtering it through the paper tape before discharging it through an outlet pipe. When there is a significant amount of filter residue or other contaminants on the paper tape, filtration becomes obstructed, causing the liquid level above the tape to rise. A float-type level switch then signals the take-up motor, which drives the take-up roll to rotate and pull the paper tape along with the paper. This type of paper tape filter is widely used in the purification, treatment, and recycling of machine tool fluids such as cutting fluids and grinding fluids.
[0003] For filtering cutting fluids used in machining or mold release agents used in die casting, the cutting fluid contains sludge, and the mold release agent contains waste wax or metal particles. Moreover, the cutting fluid or mold release agent has poor fluidity, and the surface of the paper tape is easily covered with sludge. Relying solely on gravity to flow, the liquid flow rate is too slow, and the liquid level on the surface of the paper tape rises quickly. The paper tape responds rapidly and feeds quickly, resulting in excessive consumption of the paper tape.
[0004] Currently, negative pressure paper tape filters are also used on the market. They improve filtration efficiency by connecting a vacuum pump to the filtrate chamber or by using a fan for suction. Negative pressure paper tape filters require the formation of a vacuum-sealed environment in the filtrate chamber. Since the paper tape itself has gaps, it is difficult to achieve a vacuum degree. Moreover, meeting the requirements for vacuum sealing environment also places demands on the processing and manufacturing of the equipment, resulting in high equipment costs.
[0005] Currently, when using positive pressure filter cloths for cutting fluids or mold release agents, the filter cloths are typically conveyed via a chain conveyor and need to be recycled. This is because cutting fluids or mold release agents are emulsions with poor fluidity, and sludge or waste wax can easily get squeezed into the gaps in the filter cloth. Even with scraping, it's difficult to remove them, leading to clogging and preventing reuse. Summary of the Invention
[0006] To address the problems of existing paper tape filters, this invention provides a high-efficiency paper tape filter that utilizes positive pressure liquid inlet to overcome the resistance of oil sludge or waste wax to the paper tape, thereby improving liquid inlet efficiency and reducing paper tape loss.
[0007] Based on the above problems, the proposed solution is as follows:
[0008] A high-efficiency paper tape filter includes a liquid storage tank, a filter screen plate disposed inside the liquid storage tank, and a paper tape disposed above the filter screen plate. The paper tape filter further includes:
[0009] A capping device includes a capping part and a capping bracket, wherein a cavity is formed inside the capping part, and a filter chamber is formed between the cavity and the paper tape;
[0010] A drive mechanism is connected to the pressure cap bracket to drive the pressure cap to move up and down.
[0011] A limiting mechanism limits the paper tape; when the pressure cap descends, the paper tape adheres to the pressure cap; when the pressure cap rises, the paper tape disengages from the pressure cap.
[0012] A paper holder is located on one side of the liquid storage tank;
[0013] A paper roll is placed on the paper feeding rack;
[0014] The paper collection rack is located on the other side of the liquid storage tank;
[0015] The paper roll is mounted on the paper collection rack.
[0016] Preferably, the paper feeding rack is an L-shaped support, with a first rotating drum above it; and a second rotating drum above the paper receiving rack.
[0017] Preferably, the cavity is provided with a pressing edge extending outward from the cavity; the pressing edge is provided with a sealing groove, and a sealing element is provided in the sealing groove; the pressing edge is also provided with rounded corners.
[0018] Preferably, the drive mechanism includes:
[0019] The support is fixed to the outside of the liquid storage tank;
[0020] A rotating disk is mounted on the support and is rotatably connected to the support via a second rotating shaft.
[0021] The primary power source connects to the adapter.
[0022] The first rotating shaft is connected to the second rotating shaft via a transmission belt;
[0023] The adapter includes a bevel gear set with orthogonal transmission; the bevel gear set includes: a bevel gear coaxially arranged with the first power source, and a bevel gear coaxially arranged with the first rotating shaft.
[0024] Preferably, the drive mechanism further includes:
[0025] The guiding mechanism includes:
[0026] The slide rail is fixed to the outside of the liquid storage tank;
[0027] The slide rod is movably connected at one end to the rotating disk via a first connecting rod; and at the other end to the pressure cap bracket.
[0028] Preferably, the filter screen is provided with a support member at its lower part; the filter screen is provided with filter holes within the range corresponding to the pressure cap; and the liquid storage tank is provided with a clearance slot for the paper tape to pass through.
[0029] Preferably, the limiting mechanism includes: pressure rollers disposed at both ends of the width dimension of the paper strip; the pressure rollers extend onto the paper strip while avoiding the width dimension of the pressure cap; the pressure rollers are connected to a swing arm, the swing arm is rotatably connected to the inner wall of the liquid storage tank, and the swing arm is restricted to rotate at a certain angle.
[0030] Preferably, the limiting mechanism includes: guide rollers disposed at both ends of the paper tape width dimension, the guide rollers being connected to the pressure cap and adjustable in height relative to the pressure cap; when the pressure cap descends, the guide rollers retract upwards, causing the pressure cap to adhere to the paper tape; when the pressure cap is lifted, the guide rollers fall downwards, causing the paper tape to detach from the pressure cap.
[0031] Preferably, the guide roller is provided with a connecting shaft, which is fixed to the connecting arm; the pressure cap is provided with a protruding shaft, and the connecting arm is provided with a sliding groove for the protruding shaft to slide; the inner wall of the liquid storage tank is provided with a support shaft, and the connecting arm is rotatably connected to the support shaft.
[0032] Preferably, the capping part is provided with a liquid inlet pipe and an air inlet pipe offset from the liquid inlet pipe at a certain position; the liquid storage tank is provided with a liquid outlet below it.
[0033] Preferably, the paper tape filter is located on the main body of the processing equipment; the paper receiving rack is provided with a scraper plate coaxially arranged with the second rotating drum; a slag guide plate is provided below the paper receiving rack; and a slag receiving box is provided on the main body of the processing equipment below the slag guide plate.
[0034] Compared with the prior art, the beneficial technical effects of this utility model are as follows:
[0035] 1. This application improves the liquid feeding efficiency by using positive pressure to feed liquid into the filter chamber, overcoming the resistance of sludge or waste wax to the paper tape; compared with the existing gravity-fed liquid feeding, the liquid feeding speed is faster; a thicker filter residue can be accumulated before paper feeding, reducing paper tape consumption.
[0036] 2. The filter chamber between the cap and the paper tape is flat. The liquid volume in the cap is small, and under the liquid inlet pressure, it can quickly pass through the paper tape and enter below the filter screen. Then, air is blown into the filter chamber through the air inlet pipe to further reduce the residual liquid volume and the liquid content of the filter residue. When the cap is lifted, the residual liquid flow out is reduced.
[0037] 3. The paper tape is limited by the limiting mechanism. When the pressure plate is lowered, the paper tape is positioned by the pressure roller so that the pressure plate and the paper tape are in contact. When the pressure plate is raised, the pressure roller is raised a certain distance so that the paper tape is separated from the pressure plate. The pressure roller also guides the paper tape device, making it easier for the paper tape to carry paper and change paper.
[0038] 4. Guide rollers are used to limit the paper tape. The guide rollers are set at both ends of the pressure plate. When the pressure plate is lowered, the guide rollers are retracted upwards to make the pressure plate fit with the paper tape. When the pressure plate is raised, the guide rollers are lowered to make the paper tape detach from the pressure plate and guide the paper tape to facilitate the paper tape to carry the paper. Attached Figure Description
[0039] Figure 1 This is a schematic diagram of a high-efficiency paper tape filter.
[0040] Figure 2 An exploded view of the structure of a high-efficiency paper tape filter.
[0041] Figure 3 This is a structural schematic diagram of a high-efficiency paper tape filter from another perspective.
[0042] Figure 4 This is a top view of a high-efficiency paper tape filter.
[0043] Figure 5 This is a view of the high-efficiency paper tape filter press in the lowered state as shown in Example 1.
[0044] Figure 6 This is a view of the high-efficiency paper tape filter press in the lifted state and an enlarged view of part P in Example 1.
[0045] Figure 7 This is a top view of the high-efficiency paper tape filter of Example 2.
[0046] Figure 8 This is a view of the high-efficiency paper tape filter press in the lowered state as shown in Example 2.
[0047] Figure 9 This is a view of the high-efficiency paper tape filter press with the cover raised, as shown in Example 2.
[0048] Figure 10 A partial exploded view of the cap and reservoir for implementation 2.
[0049] Figure 11 This is a schematic diagram showing the state of the filter residue on the paper tape.
[0050] In the diagram: Storage tank 1, support 100, clearance slot 101, outlet 102, support shaft 103, filter screen 2, filter holes 20, paper tape 3, filter residue 30, pressure cap 4, pressure cap part 40, pressure edge 400, rounded corner 401, sealing groove 402, pressure cap bracket 41, support column 410, second connecting rod 411, inlet pipe 42, air inlet pipe 43, protruding shaft 44, drive mechanism 5, first power 50, first rotating shaft 51, second rotating shaft 50, first rotating shaft 51, second rotating shaft 50, first rotating shaft 50, first rotating shaft 51, second rotating shaft 50, first rotating shaft 50, first rotating shaft 51, second rotating shaft 50, first rotating shaft 50, second ... Shaft 52, transmission belt 53, rotating disk 54, support 55, slide rail 56, slide rod 57, first connecting rod 58, paper roll feeding 6, paper rack feeding 60, first rotating drum 61, paper roll receiving 7, paper rack receiving 70, slag guide plate 701, second rotating drum 71, slag scraper 72, second power 73, limiting mechanism 8, paper pressure roller 80, swing arm 81, guide roller 9, connecting shaft 90, connecting arm 91, processing equipment body 11, channel 110, slag receiving box 12. Detailed Implementation
[0051] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:
[0052] Example 1:
[0053] like Figure 1 , Figure 2 , Figure 5 As shown, a high-efficiency paper tape filter includes a liquid storage tank 1, a filter screen plate 2 inside the liquid storage tank, a paper tape 3 above the filter screen plate 2, and a pressure cap 4 above the filter screen plate 2; a paper roll 6 is provided on one side of the liquid storage tank 1, and the paper roll 6 is set on a paper feeding rack 60, which is an L-shaped support, and a first rotating drum 61 is provided above the paper feeding rack 60; the paper feeding rack 60 is located outside the liquid storage tank 1; a paper take-up roll 7 is provided on the other side of the liquid storage tank 1, and the paper take-up roll 7 is set on a paper take-up rack 70, and a second rotating drum 71 is provided above the paper take-up rack 70; the paper take-up rack 70 is also located outside the liquid storage tank 1.
[0054] like Figure 1 , Figure 2 , Figure 5 The pressure cap 4 includes a pressure cap part 40 and a pressure cap bracket 41. The pressure cap part 40 is square and forms a square cavity inside. The width of the pressure cap part is smaller than the width of the paper tape 3. The pressure cap part 40 is provided with a liquid inlet pipe 42, and an air inlet pipe 43 is provided at a certain position offset from the liquid inlet pipe 42.
[0055] like Figure 6 The square cavity is provided with a pressing edge 400 extending outward from the cavity. The pressing edge 400 is provided with a sealing groove 402 and a sealing element is provided in the sealing groove 402. The pressing edge 400 is provided with a rounded corner 401.
[0056] like Figures 1-3As shown, the high-efficiency paper tape filter also includes a drive mechanism that drives the pressure cap 4 to move up and down and is connected to the pressure cap bracket 41. The drive mechanism 5 includes a support 55 and a rotating disk 54. The support 55 is fixed to the outer wall of the liquid storage tank 1, and the rotating disk 54 is mounted on the support 55 and rotatably connected to the support 55 through a second rotating shaft 52. The first rotating shaft 51 and the second rotating shaft 52 are connected by a transmission belt 53. A first power 50 is connected to a transfer device. The transfer device includes a bevel gear set with orthogonal transmission. The bevel gear set includes a bevel gear coaxially arranged with the first power 50 and a bevel gear coaxially arranged with the first rotating shaft 51 (not shown in the figure).
[0057] like Figure 3 The drive mechanism 5 also includes a guide mechanism, which includes a slide rail 56 and a slide rod 57; the slide rail 56 is fixedly connected to the outer wall of the liquid storage tank 1. One end of the slide rod 57 is movably connected to the rotating disk 54 via a first connecting rod 58; the other end is movably connected to the cap bracket 41; an eccentrically arranged shaft on the rotating disk 54 is connected to the first connecting rod 58; as shown... Figure 2 The end of the pressure cap bracket 41 is provided with support columns 410; the support columns 410 and the slide rod 57 are connected by the second connecting rod 411.
[0058] The guide mechanism, support 55, and rotating disk 54 are all located at both ends of the liquid storage tank 1, driving the cap 4 to move up and down.
[0059] like Figure 5 The liquid storage tank 1 is equipped with a filter screen plate 2, and a support member 100 is provided below the filter screen plate 2, such as... Figure 2 The filter screen plate 2 has filter holes 20 only in the area corresponding to the pressure cap part 40; located above the filter screen plate 2, along the paper belt direction, the liquid storage tank 1 is provided with a clearance slot 101 for the paper belt to pass through.
[0060] like Figure 2 The high-efficiency paper tape filter also includes a limiting mechanism for limiting the paper tape 3. The limiting mechanism includes: pressure rollers 80 disposed at both ends of the paper tape width; such as Figure 4 The pressure roller 80 extends onto the paper strip 3, while avoiding the width of the pressure cap 40. For example... Figure 2 The pressure roller 80 is connected to the swing arm 81, which is rotatably connected to the inner wall of the liquid storage tank 1. A set of pressure rollers 80 is installed at both the paper tape inlet and outlet of the liquid storage tank 1; the swing arm 81 drives the pressure rollers 80 to rotate a certain angle within the outlet tank 1. A stop (not shown in the figure) is provided on the inner wall of the liquid storage tank 1 to limit the rotation of the swing arm 81 by a certain angle. Figure 5 The paper strip 3 is drawn out from the paper roll 6, passes around the first rotating drum 61, is limited by two sets of paper pressing rollers 80, passes around the second rotating drum 71, and is finally wound onto the paper roll 7 to form the paper roll 7; the paper roll 7 and the second power 73 are connected by a transmission belt.
[0061] like Figure 2 Above the paper roll 7, there is also a scraper plate 72, which is coaxially arranged with the second rotating drum 71. The scraper plate 72 has connecting pieces at both ends, which are coaxially arranged with the second rotating drum 71 and rotate around the axis of the second rotating drum 71.
[0062] like Figures 1-3 As shown, a paper tape filter is installed on the processing equipment body 11; the paper receiving rack 70 is equipped with a slag guide plate 701 located below the slag guide plate 701, and the processing equipment body 11 is equipped with a slag receiving box 12. This processing equipment body 11 is used for further purification of the liquid filtered by the paper tape filter. The bottom of the liquid storage tank is equipped with a liquid outlet 102, which communicates with the channel 110 on the processing equipment body 11.
[0063] The working principle of a high-efficiency paper tape filter in Example 1:
[0064] like Figure 5 The paper strip 3 is wound and fixed from the unwinding roll 6 through the first rotating drum 61, two sets of pressure rollers 80, and the second rotating drum 71, and then wound onto the take-up roll 7. Figure 3 The first power source 50 drives the first rotating shaft 51 to rotate via an orthogonal transmission bevel gear set. The first rotating shaft 51 drives the second rotating shaft 52 to rotate via a transmission belt 53. The second rotating shaft 52 drives the rotating disk 54 to rotate. The rotation of the rotating disk 54 drives the slide rod 57 to slide up and down, thereby causing the pressure cover 4 to move up and down. Figure 5 When the pressure cap 40 descends, it presses down the paper strip and makes it fit against the filter screen 2. At this time, the swing arm 81 rotates to the vertical position under the action of gravity, and the two sets of paper pressing rollers 80 limit the paper strip 3.
[0065] like Figure 5 The pressure edge 400 of the pressure cap 4 is provided with a sealing ring around its perimeter. The filter screen 2 is provided with filter holes 20 only within the square cavity of the pressure cap part 40. The square cavity is a flat cavity, and a filter chamber is formed between the cavity and the paper tape. The liquid is pressurized by the liquid inlet pump and supplied into the filter chamber from the liquid inlet pipe 42. The pressure does not exceed 0.1MPa. The liquid is forced into the filter chamber at a certain pressure. For cutting fluid containing sludge or mold release agent containing waste wax, there is a thin layer of filter residue on the surface of the paper tape. Existing paper tape filters that rely on gravity flow are easily clogged. The high-efficiency paper tape filter of this application has liquid inlet pressure, so even if there is sludge or waste wax, the liquid can pass through the filter holes faster, and the liquid filtration efficiency is greatly improved.
[0066] A pressure gauge is connected to the inlet pipe 42. When the inlet pressure increases to the threshold, the inlet is stopped and gas is introduced through the air inlet pipe 43. The liquid in the filter chamber is further squeezed into the filter screen plate 2 below the liquid storage tank 1.
[0067] like Figure 6 When the liquid in the filter chamber is drained or a relatively dry filter residue of a certain thickness forms on the surface of the paper tape, the first power 50 drives the pressure cover 4 to lift from above the paper tape 3, and the paper tape detaches from the filter screen; the swing arm 81 rotates at a certain angle, and the pressure roller 80 is also driven to lift a certain distance, limiting the paper tape 3 and causing the paper tape 3 to detach from the pressure cover 4. The take-up roll 7 is wound up under the action of the second power 73, driving the paper tape forward a distance equal to the length of the pressure cover 40; Figure 11 A square filter residue layer 30 is left on the paper tape 3. The thicker filter residue layer accumulated on the paper tape 3 is scraped off by the scraper plate 72 and falls into the residue collection box 12; the waste paper roll is wound up by the paper roll 7.
[0068] Example 2:
[0069] like Figures 7-10 As shown, the difference from Embodiment 1 is that the limiting mechanism in Embodiment 2 has guide rollers 9 at both ends of the width dimension of the pressure cap 40, and the guide rollers 9 can be adjusted up and down relative to the pressure cap 4; as Figure 10 The guide roller 9 is provided with a connecting shaft 90, which is fixed to the connecting arm 91. The pressure cap 40 is provided with a protruding shaft 44, and the connecting arm 91 is provided with a sliding groove for the protruding shaft 44 to slide. The inner wall of the liquid storage tank 1 is provided with a support shaft 103, and the connecting arm 91 is rotatably connected to the support shaft 103.
[0070] like Figure 8 When the pressure cap 4 descends, the protruding shaft 44 slides downward along the groove, the connecting arm 91 rotates around the support shaft 103, and the guide roller 9 retracts upward, causing the pressure cap 4 to adhere to the paper tape 3; Figure 9 When the pressure cap 4 is lifted, the protruding shaft 44 slides upward along the groove, the connecting arm 91 rotates around the support shaft 103, and the guide roller 9 falls, limiting the paper tape and causing the paper tape 3 to disengage from the pressure cap 4. Figure 7 When the second power 73 drives the paper roll 7 to rotate and feed paper, the guide roller 9 limits the paper belt and guides the paper forward.
[0071] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.
Claims
1. A high-efficiency paper tape filter, comprising a liquid storage tank, a filter screen plate disposed within the liquid storage tank, and a paper tape disposed above the filter screen plate, characterized in that... The paper tape filter also includes: A capping device includes a capping part and a capping bracket, wherein a cavity is formed inside the capping part, and a filter chamber is formed between the cavity and the paper tape; A drive mechanism is connected to the pressure cap bracket to drive the pressure cap to move up and down. A limiting mechanism limits the paper tape; when the pressure cap descends, the paper tape adheres to the pressure cap; when the pressure cap rises, the paper tape disengages from the pressure cap. A paper holder is located on one side of the liquid storage tank; A paper roll is placed on the paper feeding rack; The paper collection rack is located on the other side of the liquid storage tank; The paper roll is set on the paper collection rack.
2. The high-efficiency paper tape filter according to claim 1, characterized in that, The paper feeding rack is an L-shaped support, and a first rotating drum is provided above the paper feeding rack; a second rotating drum is provided above the paper receiving rack.
3. A high-efficiency paper belt filter according to claim 1, characterized in that, The cavity is surrounded by a pressing edge extending outward from the cavity; the pressing edge is provided with a sealing groove, and a sealing element is provided in the sealing groove; the pressing edge is also provided with rounded corners.
4. A high-efficiency paper tape filter according to claim 1, characterized in that, The drive mechanism includes: The support is fixed to the outside of the liquid storage tank; A rotating disk is mounted on the support and is rotatably connected to the support via a second rotating shaft. The primary power source connects to the adapter. The first rotating shaft is connected to the second rotating shaft via a transmission belt; The adapter includes a bevel gear set with orthogonal transmission; the bevel gear set includes: a bevel gear coaxially arranged with the first power source, and a bevel gear coaxially arranged with the first rotating shaft.
5. A high-efficiency paper tape filter according to claim 4, characterized in that, The drive mechanism also includes: The guiding mechanism includes: The slide rail is fixed to the outside of the liquid storage tank; The slide rod is movably connected at one end to the rotating disk via a first connecting rod; and at the other end to the pressure cap bracket.
6. A high-efficiency paper tape filter according to claim 1, characterized in that, The filter screen is provided with a support member at its lower part; the filter screen is provided with filter holes in the range corresponding to the pressure cap part; the liquid storage tank is provided with a clearance slot for the paper tape to pass through.
7. A high-efficiency paper belt filter according to claim 1, characterized in that, The limiting mechanism includes: pressure rollers disposed at both ends of the width dimension of the paper strip; the pressure rollers extend onto the paper strip while avoiding the width dimension of the pressure cap; the pressure rollers are connected to a swing arm, the swing arm is rotatably connected to the inner wall of the liquid storage tank, and the swing arm is restricted to rotate at a certain angle.
8. A high-efficiency paper tape filter according to claim 1, characterized in that, The limiting mechanism includes: guide rollers disposed at both ends of the paper tape width dimension, the guide rollers being connected to the pressure cap and adjustable in height relative to the pressure cap; when the pressure cap descends, the guide rollers retract upwards, causing the pressure cap to adhere to the paper tape; when the pressure cap is lifted, the guide rollers fall downwards, causing the paper tape to detach from the pressure cap.
9. A high-efficiency paper tape filter according to claim 8, characterized in that, The guide roller is provided with a connecting shaft, which is fixed to the connecting arm; the pressure cap is provided with a protruding shaft, and the connecting arm is provided with a sliding groove for the protruding shaft to slide; the inner wall of the liquid storage tank is provided with a support shaft, and the connecting arm is rotatably connected to the support shaft.
10. A high-efficiency paper tape filter according to claim 1, characterized in that, The pressure cap is provided with a liquid inlet pipe and an air inlet pipe offset from the liquid inlet pipe at a certain position; the liquid storage tank is provided with a liquid outlet below it.
11. A high-efficiency paper tape filter according to claim 1, characterized in that, The paper tape filter is located on the main body of the processing equipment; the paper receiving rack is provided with a scraper plate coaxially arranged with the second rotating drum; a slag guide plate is provided below the paper receiving rack; and a slag receiving box is provided on the main body of the processing equipment below the slag guide plate.