Corrosion resistant, strong seal, dual axle discharge chute

Abstract

The utility model provides a kind of corrosion-resistant strong sealing double-shaft discharge chute, comprising: discharge chute main frame, the top of discharge chute main frame is equipped with feed inlet, feed inlet is used to support the material that modulator falls down, the side wall of discharge chute main frame is equipped with mixing opening, mixing opening can be connected the door cover of material preparation chamber, the bottom of discharge chute main frame is equipped with discharge port, material preparation chamber includes stirring device, stirring device can be stirred to the material that falls from feed inlet in door cover, the material that is stirred can be discharged from discharge port, first turnover assembly and second turnover assembly are rotatably connected in discharge chute main frame, second turnover assembly is above first turnover assembly, feeding tongue is installed on first turnover assembly, and feeding tongue can be matched with the gap of door cover. By setting up "double-shaft turnover assembly" structure, the double control and sealing function of discharge chute passage are realized, effectively solve the problem that traditional discharge chute is easily corroded under high humidity, acidity, chlorine-containing working condition.

Description

Technical Field

[0001] This utility model relates to feed formulation, and in particular to the field of feed mixing and unloading devices, specifically a corrosion-resistant, highly sealed, dual-shaft unloading trough. Background Technology

[0002] Existing pellet mill discharge troughs face severe operational challenges in practice, operating under prolonged conditions of high temperature, high humidity, slight positive pressure, and acidic corrosive media. This leads to severe corrosion and sealing failures. Traditional structures often use 304 stainless steel, which lacks sufficient corrosion resistance. Especially under conditions involving chloride-containing feed and acidic burnt feed, components such as the feeding tongue and flaps are prone to wear and corrosion, causing leakage and jamming. Simultaneously, the cylinder and bearing sealing structures have low protection levels, allowing steam and dust to easily penetrate, accelerating component aging, leading to malfunctions and poor sealing. This affects production continuity and equipment lifespan, failing to meet the requirements of modern feed production for high sealing performance and long-term stable operation. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a corrosion-resistant, highly sealed, dual-shaft unloading trough to solve the difficulties of the prior art.

[0004] To achieve the above and other related objectives, this utility model provides a corrosion-resistant, highly sealed, dual-shaft unloading trough, comprising: a main frame for the unloading trough, an inlet at the top of the main frame for receiving materials falling from the modulator, a mixing port on the side wall of the main frame for connecting to the door cover of the material preparation chamber, an outlet at the bottom of the main frame, the material preparation chamber including a stirring device for stirring materials falling from the inlet inside the door cover, and the stirred materials being discharged from the outlet, and a first tilting assembly and a second tilting assembly rotatably connected inside the main frame for the unloading trough, the second tilting assembly being above the first tilting assembly, and a feeding tongue installed on the first tilting assembly for clearance fitting with the door cover.

[0005] According to the preferred embodiment, the first flipping assembly includes a first rotating rod, a feeding flap fixed on the first rotating rod, a feeding tongue disposed on the feeding flap, and a first sealing strip installed on the feeding flap. When the feeding tongue and the door cover are in clearance fit, the first sealing strip can fit against the inner wall of the main frame of the unloading trough.

[0006] According to the preferred embodiment, the second tilting assembly includes a second rotating rod, on which a tilting plate is fixed. A second support plate and a first support plate are respectively provided at two rotation limit points of the tilting plate on the inner wall of the main frame of the unloading chute. A second sealing strip is installed on the tilting plate. When the tilting plate is in contact with the second support plate, the second sealing strip is in contact with the front end of the inner side of the main frame of the unloading chute; when the tilting plate is in contact with the first support plate, the second sealing strip is in contact with the rear end of the inner side of the main frame of the unloading chute.

[0007] According to the preferred embodiment, when the flip plate is attached to the first support plate, the material entering from the feed inlet can slide down the flip plate and fall onto the feeding tongue; when the flip plate is attached to the second support plate, the flip plate and the feeding flip plate together can cover the mixing port, and the first support plate and the second support plate have chamfers on the side facing the flip plate.

[0008] According to the preferred embodiment, the two ends of the second rotating rod and the first rotating rod are respectively provided with round rods that pass through the main frame of the unloading trough. Bearing seats are sleeved at the outer diameter of the round rods and the bearing seats are installed on the outside of the main frame of the unloading trough. The round rod on the first rotating rod is fixedly connected to the first rotating plate, and the round rod on the second rotating rod is fixedly connected to the second rotating plate.

[0009] According to the preferred embodiment, a first cylinder and a second cylinder are installed on the outer side of the main frame of the unloading trough. The output end of the first cylinder is rotatably connected to the first rotating plate, and the first cylinder can push the first rotating plate to rotate around the axis of the round rod on the first rotating rod. The output end of the second cylinder is rotatably connected to the second rotating plate, and the second cylinder can push the second rotating plate to rotate around the axis of the round rod on the second rotating rod.

[0010] According to the preferred embodiment, an annular sealing gasket is fitted at the outer diameter of the round rod. A sealing cylinder is integrally formed on the side of the annular sealing gasket facing the main frame of the unloading trough. The main frame of the unloading trough is provided with a through hole to avoid the round rod. The diameter of the through hole is larger than the diameter of the round rod. The sealing cylinder is interference-fitted with the through hole. The annular sealing gasket and the sealing cylinder are used to prevent the material in the main frame of the unloading trough from passing through the through hole and entering the bearing seat.

[0011] This utility model uses 316L stainless steel, a dual-axis independent flipping structure, a fluororubber annular sealing gasket and an integrated sealing cylinder, a chamfered support plate, and a dual-cylinder external drive system to adjust the opening and closing sequence of the feeding channel and the mixing port. Material guidance is achieved through the coordinated action of the upper and lower flipping components; thus, the following beneficial effects are achieved:

[0012] (1) When the flip plate is opened, a smooth slope is formed, and the material can slide smoothly to the feeding tongue to avoid accumulation or blockage; when the flip plate is closed, it works with the feeding flip plate to cover the mixing port, forming a "double plate sandwich" sealing structure. The chamfers set on the first support plate and the second support plate facilitate the fit of the flip plate, with almost no gap.

[0013] (2) The annular sealing gasket and the integrated sealing cylinder are tightly fitted to the main frame perforation by interference fit, forming a labyrinth + extrusion double sealing barrier, which effectively prevents steam, acidic rice crust and chlorine dust from entering the bearing area.

[0014] The preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings, so as to facilitate an understanding of the features and advantages of the present invention. Attached Figure Description

[0015] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0016] Figure 2 The diagram shown is a schematic diagram of the discharge port structure of this utility model;

[0017] Figure 3 The diagram shown is a schematic of the feeding flap structure of this utility model;

[0018] Figure 4 The diagram shown is a schematic diagram of the flip-up plate structure of this utility model;

[0019] Figure 5 The diagram shown is a schematic diagram of the sealing cylinder structure of this utility model;

[0020] Figure 6 The diagram shown is a schematic diagram of the feeding tongue structure of this utility model;

[0021] Label Explanation

[0022] 1. Main frame of unloading chute; 11. Inlet; 12. Mixing port; 13. Outlet; 21. First cylinder; 211. First rotating rod; 212. First rotating plate; 22. Feeding flap; 23. Feeding tongue; 31. Second cylinder; 311. Second rotating rod; 312. Second rotating plate; 32. Tilting plate; 41. First support plate; 42. Second support plate; 51. Round rod; 52. Bearing seat; 531. Annular sealing gasket; 532. Sealing cylinder. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0024] Compared to the embodiments shown in the accompanying drawings, feasible embodiments within the scope of protection of this utility model may have fewer components, have other components not shown in the drawings, different components, components arranged differently, or components with different connections, etc. Furthermore, two or more components shown in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0025] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning understood by one of ordinary skill in the art to which this invention pertains. The terms “first,” “second,” and similar terms used in this patent application specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Similarly, “an” or “a” and similar terms do not necessarily indicate a quantity limitation. Terms such as “comprising” or “including” mean that the element or object preceding the word encompasses the element or object listed following the word and its equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as “upper,” “lower,” “left,” and “right” are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described object changes.

[0026] Please see Figure 1 - Figure 6 This utility model provides an embodiment: a corrosion-resistant, highly sealed, dual-shaft unloading trough, comprising: a main frame 1 of the unloading trough, an inlet 11 at the top of the main frame 1 for receiving materials falling from the modulator, a mixing port 12 on the side wall of the main frame 1 for connecting to the door cover of the material preparation chamber, an outlet 13 at the bottom of the main frame 1, the material preparation chamber including a stirring device for stirring materials falling from the inlet 11 inside the door cover, and the stirred materials being discharged from the outlet 13; a first flipping assembly and a second flipping assembly are rotatably connected inside the main frame 1 of the unloading trough, the second flipping assembly being above the first flipping assembly, and a feeding tongue 23 being installed on the first flipping assembly for clearance fitting with the door cover. By incorporating a "dual-axis tilting assembly" structure, dual control and sealing of the unloading chute channel are achieved, effectively solving problems such as corrosion, leakage, and seal failure in traditional unloading chute systems under high humidity, acidic, and chlorine-containing conditions. The second tilting assembly, located above, controls the feed flow; the first tilting assembly, located below, works with the door cover to feed material. The clearance fit design between the feeding tongue 23 and the door cover ensures uninterrupted normal opening and closing of the door cover while achieving a tight seal when closed, reducing steam backflow. The overall structural layout is reasonable, and the movements are coordinated, greatly enhancing the stability and service life of the equipment in harsh environments. This meets the core requirements of "corrosion resistance, strong sealing, and low maintenance" on-site. The metal parts in the unloading chute that come into direct contact with the material are made of 316L stainless steel.

[0027] Please see Figure 1 - Figure 6In this embodiment, the first flipping assembly includes a first rotating rod 211, a feeding flap 22 fixed on the first rotating rod 211, a feeding tongue 23 disposed on the feeding flap 22, and a first sealing strip installed on the feeding flap 22. When the feeding tongue 23 is in clearance fit with the door cover, the first sealing strip can adhere to the inner wall of the main frame 1 of the unloading chute. The feeding tongue 23 is integrated into the feeding flap 22 and driven by the first rotating rod 211 to achieve synchronous rotation of the whole assembly. The first sealing strip on the feeding flap 22, when the feeding tongue 23 is in fit with the door cover, synchronously adheres to the inner wall of the main frame, forming a sealing strip. The second tilting assembly includes a second rotating rod 311, on which a tilting plate 32 is fixed. A second support plate 42 and a first support plate 41 are respectively provided at two rotational limits of the tilting plate 32 on the inner wall of the main frame 1 of the unloading chute. A second sealing strip is installed on the tilting plate 32. When the tilting plate 32 is in contact with the second support plate 42, the second sealing strip is in contact with the front end of the inner side of the main frame 1 of the unloading chute; when the tilting plate 32 is in contact with the first support plate 41, the second sealing strip is in contact with the rear end of the inner side of the main frame 1 of the unloading chute. The tilting plate 32 can achieve a tight fit with the inner wall of the main frame through the second sealing strip at both extreme positions (in contact with the first support plate 41 or the second support plate 42). Regardless of which end the tilting plate 32 is in, a certain degree of sealing is ensured. The design of the support plate and the sealing strip allows the tilting plate 32 to automatically press the sealing strip when in position, eliminating the need for an additional locking mechanism. When the tilting plate 32 is attached to the first support plate 41, the material entering from the feed inlet 11 can slide down the tilting plate 32 and fall onto the feeding tongue 23. When the tilting plate 32 is attached to the second support plate 42, the tilting plate 32 and the feeding tilting plate 22 together cover the mixing port 12. The first support plate 41 and the second support plate 42 have chamfers on the side facing the tilting plate 32. When the tilting plate 32 is open (attached to the first support plate 41), a smooth slope is formed, and the material can slide smoothly onto the feeding tongue 23, avoiding accumulation or blockage. When the tilting plate 32 is closed (attached to the second support plate 42), it works with the feeding tilting plate 22 to cover the mixing port 12, forming a "double-plate sandwich" sealing structure. The chamfers on the first support plate 41 and the second support plate 42 facilitate the attachment of the tilting plate 32, with almost no gaps.

[0028] Please see Figure 2 - Figure 6In this embodiment, both ends of the second rotating rod 311 and the first rotating rod 211 are respectively provided with round rods 51 that pass through the main frame 1 of the unloading trough. Bearing seats 52 are fitted onto the outer diameter of the round rods 51, and the bearing seats 52 are installed on the outside of the main frame 1 of the unloading trough. The round rods 51 on the first rotating rod 211 are fixedly connected to the first rotating plate 212, and the round rods 51 on the second rotating rod 311 are fixedly connected to the second rotating plate 312. The installation method of the round rods 51 passing through and the external bearing seats 52 ensures that the rotating components are subjected to uniform force and operate smoothly. Placing the bearing seats 52 on the outside of the main frame, away from the high-temperature and high-humidity internal environment, effectively protects precision components such as bearings and prevents the intrusion of steam and corrosive media. The configuration of the first and second rotating plates 312 provides a reliable connection point for the cylinder drive, ensuring efficient power transmission. A first cylinder 21 and a second cylinder 31 are installed on the outer side of the main frame 1 of the unloading chute. The output end of the first cylinder 21 is rotatably connected to the first rotating plate 212, and the first cylinder 21 can push the first rotating plate 212 to rotate around the axis of the round rod 51 on the first rotating rod 211. The output end of the second cylinder 31 is rotatably connected to the second rotating plate 312, and the second cylinder 31 can push the second rotating plate 312 to rotate around the axis of the round rod 51 on the second rotating rod 311. The two cylinders independently drive the two tilting components, realizing precise and non-interfering motion control, and the opening and closing sequence can be flexibly set according to process requirements. The cylinders are installed externally, away from high-temperature and corrosive areas, extending their service life. The lever-type drive achieved by pushing the rotating plate has high transmission efficiency, and the tilting angle can be precisely controlled by selecting the cylinder stroke, ensuring that the tilting plate 32 and the feeding tilting plate 22 are accurately positioned and that the seals are fully fitted. An annular sealing gasket 531 is fitted onto the outer diameter of the round rod 51. An integral sealing cylinder 532 is formed on the side of the annular sealing gasket 531 facing the main frame 1 of the unloading trough. The main frame 1 of the unloading trough has a through-hole to avoid the round rod 51; the diameter of the through-hole is larger than the diameter of the round rod 51. The sealing cylinder 532 is interference-fitted with the through-hole. The annular sealing gasket 531 and the sealing cylinder 532 prevent material inside the main frame 1 from passing through the through-hole and entering the bearing housing 52. The annular sealing gasket 531 and the integral sealing cylinder 532 are tightly fitted against the through-hole of the main frame using an interference fit, forming a labyrinth + compression double sealing barrier, effectively preventing steam, acidic burnt material, and chlorine-containing dust from entering the bearing area. Compared to traditional planar seals, this structure has stronger pressure resistance and anti-channeling capabilities, significantly reducing the risk of bearing corrosion and seizure, and greatly reducing equipment failure rate and maintenance costs.

[0029] During operation, after the pellet mill starts, the second cylinder 31 actuates to drive the second rotating plate 312 to rotate around the axis of the round rod 51 of the second rotating rod 311, causing the tilting plate 32 to rotate from the position of being in contact with the second support plate 42 to the position of being in contact with the first support plate 41. At this time, the tilting plate 32 is in an inclined state, and the feed inlet 11 and the tilting plate 32 form a continuous channel. The material processed by the modulator falls into the discharge chute through the feed inlet 11, slides down the tilting plate 32 onto the feeding tongue 23 located below, and then enters the pelleting chamber for stirring. When it is necessary to seal the pelleting chamber for stirring, the second cylinder 31 reverses its action, driving the tilting plate 32 to rotate back to the position of being in contact with the second support plate 42. At the same time, the first cylinder 21 actuates to push the first rotating plate 212, causing the feeding tilting plate 22 to lift up the feeding tongue 23 and engage with the door cover. At this position, the tilting plate 32 and the feeding tilting plate 22 form a double-layer overlapping structure at the mixing port 12. The second sealing strip is tightly fitted to the front end of the inner wall of the main frame, and the first sealing strip is simultaneously fitted to the inner wall of the main frame, achieving complete sealing of the mixing port 12 and effectively preventing steam and material leakage. During the entire working process, the annular sealing gasket 531 and the integrated sealing cylinder 532 at the round rod 51 continuously block the internal corrosive medium from entering the bearing seat 52 through interference fit. The material of the annular sealing gasket 531 and the sealing cylinder 532 is fluororubber, ensuring that the transmission components operate in a clean and dry environment, thereby ensuring the long-term stable operation of the equipment. The material preparation chamber and the modulator here are existing technologies, and their working principles will not be elaborated here. The air circuit connection method of the cylinder and the corresponding program control are also known to those skilled in the art.

[0030] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A corrosion-resistant, highly sealed, dual-shaft unloading trough, characterized in that, include: The main frame (1) of the unloading trough has an inlet (11) at the top, which is used to receive the material falling from the modulator. The side wall of the main frame (1) of the unloading trough has a mixing port (12), which can be connected to the door cover of the material preparation chamber. The bottom of the main frame (1) of the unloading trough has a discharge port (13). The material preparation chamber includes a stirring device, which can stir the material falling from the inlet (11) inside the door cover. The stirred material can be discharged from the discharge port (13). The main frame (1) of the unloading trough is rotatably connected with a first flipping component and a second flipping component. The second flipping component is above the first flipping component. The first flipping component is equipped with a feeding tongue (23), which can be fitted with the door cover.

2. The corrosion-resistant, highly sealed, dual-shaft unloading trough according to claim 1, characterized in that, The first flipping assembly includes a first rotating rod (211), a feeding flap (22) is fixed on the first rotating rod (211), a feeding tongue (23) is set on the feeding flap (22), and a first sealing strip is installed on the feeding flap (22). When the feeding tongue (23) and the door cover are in a clearance fit, the first sealing strip can fit against the inner wall of the main frame (1) of the unloading trough.

3. The corrosion-resistant, highly sealed, dual-shaft unloading trough according to claim 2, characterized in that, The second flipping assembly includes a second rotating rod (311), on which a flipping plate (32) is fixed. A second support plate (42) and a first support plate (41) are respectively provided at two rotation limit points of the flipping plate (32) on the inner wall of the main frame (1) of the unloading trough. A second sealing strip is installed on the flipping plate (32). When the flipping plate (32) is attached to the second support plate (42), the second sealing strip is attached to the front end of the inner side of the main frame (1) of the unloading trough. When the flipping plate (32) is attached to the first support plate (41), the second sealing strip is attached to the rear end of the inner side of the main frame (1) of the unloading trough.

4. The corrosion-resistant, highly sealed, dual-shaft unloading trough according to claim 3, characterized in that, When the flip plate (32) is attached to the first support plate (41), the material entering from the feed inlet (11) can slide down the flip plate (32) and fall onto the feeding tongue (23); when the flip plate (32) is attached to the second support plate (42), the flip plate (32) and the feeding flip plate (22) can jointly cover the mixing port (12), and the first support plate (41) and the second support plate (42) have chamfers on the side facing the flip plate (32).

5. The corrosion-resistant, highly sealed, dual-shaft unloading trough according to claim 4, characterized in that, The second rotating rod (311) and the first rotating rod (211) are respectively provided with round rods (51) that pass through the main frame (1) of the unloading trough. Bearing seats (52) are sleeved on the outer diameter of the round rods (51). The bearing seats (52) are installed on the outside of the main frame (1) of the unloading trough. The round rods (51) on the first rotating rod (211) are fixedly connected to the first rotating plate (212), and the round rods (51) on the second rotating rod (311) are fixedly connected to the second rotating plate (312).

6. The corrosion-resistant, highly sealed, dual-shaft unloading trough according to claim 5, characterized in that, A first cylinder (21) and a second cylinder (31) are installed on the outside of the main frame (1) of the unloading trough. The output end of the first cylinder (21) is rotatably connected to the first rotating plate (212). The first cylinder (21) can push the first rotating plate (212) to rotate around the axis of the round rod (51) on the first rotating rod (211). The output end of the second cylinder (31) is rotatably connected to the second rotating plate (312). The second cylinder (31) can push the second rotating plate (312) to rotate around the axis of the round rod (51) on the second rotating rod (311).

7. The corrosion-resistant, highly sealed, dual-shaft unloading trough according to claim 6, characterized in that, An annular sealing gasket (531) is fitted on the outer diameter of the round rod (51). The annular sealing gasket (531) is integrally formed with a sealing cylinder (532) on the side facing the main frame (1) of the unloading trough. The main frame (1) of the unloading trough is provided with a through hole to avoid the round rod (51). The diameter of the through hole is larger than the diameter of the round rod (51). The sealing cylinder (532) is interference-fitted with the through hole. The annular sealing gasket (531) and the sealing cylinder (532) are used to prevent the material in the main frame (1) of the unloading trough from passing through the through hole and entering the bearing seat (52).

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