Edible mushroom bag negative pressure bag mouth rolling mechanism

Abstract

The utility model relates to edible mushroom production equipment technical field, concretely is a kind of edible mushroom bag negative pressure bag mouth mechanism, including negative pressure fan, negative pressure air pipe and bag mouth part of rolling;Negative pressure fan is connected with negative pressure air pipe by flange, and bag mouth part of rolling contains outer tube, sealing plate, inner tube and bag plate of sucking;Outer tube both ends are through, one end is the threaded joint with sealing washer, and butt joint negative pressure air pipe, the other end is fixed bag plate of sucking;Inner tube is coaxially arranged in outer tube, and outside is provided with air hole one, one end is fixed bag plate of sucking, and one end is sealed through sealing plate;Bag plate of sucking is annular plate, is provided with air hole two, outer ring is connected with outer tube, inner ring is connected with inner tube, and the end surface of adsorption is covered with anti -skid layer of silica gel with anti -skid line, and the technical scheme is rolled bag by negative pressure adsorption and annular fit coordination, and the structure is simple, and stability is good, can be integrated in automated production line, promotes factory scale production.

Description

Technical Field

[0001] This utility model relates to the technical field of edible fungus production equipment, specifically a negative pressure bag-strapping mechanism for edible fungus bags. Background Technology

[0002] In the large-scale production of bag-cultivated edible fungi such as king oyster mushrooms, seafood mushrooms, white jade mushrooms, and crab mushrooms, after the spawn bags have been inoculated, they need to undergo key processes such as removing the rings, removing the caps, and folding down the bag opening to provide a suitable environment for subsequent fruiting cultivation. Currently, this process still relies on manual operation, which has many technical pain points: manual bag opening and ring removal are inefficient, the processing capacity per batch is limited, and the labor intensity is high. Long-term operation can easily lead to fatigue errors, making it difficult to meet the needs of large-scale factory production. At the same time, bag-cultivated spawn bags are prone to deviations in shape and size during production, sterilization, and cultivation, such as inconsistent height, fluctuations in outer diameter, and misalignment of the ring cap position. Conventional mechanical equipment is not adaptable enough to reliably handle these deviations, which can easily lead to problems such as unsmooth bag opening and bag damage, thus limiting the promotion of automated production lines.

[0003] Existing automated bag-strapping equipment mostly employs rigid clamping structures, which not only further exacerbates the risk of bag damage but also results in poor sealing performance and uneven adsorption distribution in the negative pressure transmission process, leading to low bag-strapping success rates and frequent malfunctions. Furthermore, the bag-strapping components of traditional equipment are mostly fixed structures, unable to be flexibly adjusted according to the specifications of the mushroom bags, exhibiting poor adaptability and requiring frequent component replacements, thus increasing production and maintenance costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a negative pressure bag-straightening mechanism for edible mushroom bags.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: A negative pressure bag-strapping mechanism for edible mushroom bags, comprising a negative pressure fan, a negative pressure duct, and a bag-strapping component. The suction end of the negative pressure fan is connected to the negative pressure duct via a flange. The bag-strapping component includes an outer tube, a sealing plate, an inner tube, and a suction plate. The outer tube is a tubular structure with both ends connected; one end is a negative pressure connection end, which connects to the negative pressure duct, and the other end is an installation end, which is fixedly connected to the suction plate. The inner tube is coaxially disposed inside the outer tube, and a series of ventilation holes are evenly distributed around the outer side of the inner tube. One end of the inner tube is fixedly connected to the suction plate, and the other end is sealed by the sealing plate.

[0008] Preferably, the suction bag plate has two ventilation holes evenly distributed, the suction bag plate is an annular plate, the outer ring of the suction bag plate is fixedly connected to the mounting end of the outer tube, and the inner ring of the suction bag plate is fixed to the fixed end of the inner tube.

[0009] More preferably, the negative pressure connection end of the outer tube is provided with a threaded interface, and a sealing gasket is fitted on the outside of the threaded interface.

[0010] Preferably, the suction end face of the suction bag plate is covered with a silicone anti-slip layer, and the surface of the silicone anti-slip layer is provided with uniformly distributed anti-slip textures.

[0011] Preferably, the outer ring of the suction bag plate is screwed to the mounting end of the outer tube via a threaded structure, and the inner ring of the suction bag plate is screwed to the fixed end of the inner tube via a threaded structure.

[0012] (III) Beneficial Effects

[0013] Compared with the prior art, this utility model provides a negative pressure bag-straightening mechanism for edible mushroom bags, which has the following beneficial effects:

[0014] This technical solution generates stable negative pressure using a negative pressure fan, which is then transmitted through a negative pressure duct to the bag-collecting nozzle, creating a uniform negative pressure field on the surface of the suction plate. The suction plate adopts a ring structure with numerous ventilation holes, which, together with the circular ventilation holes on the outer wall of the inner tube, ensure a more even distribution of negative pressure and effectively prevent excessive local suction from damaging the mushroom bags.

[0015] The suction plate's adsorption end face is covered with a silicone anti-slip layer and features anti-slip textures, ensuring a secure adsorption of the bag opening while preventing slippage or scratching of the film. It is particularly suitable for high-humidity, slippery PE or PP bags. The outer tube, suction plate, and inner tube all utilize a threaded connection structure for easy disassembly, cleaning, and maintenance. A sealing gasket at the negative pressure connection end ensures airtightness and improves negative pressure efficiency.

[0016] In use, the mechanism is aligned with the opening of the mushroom bag and descends. Negative pressure instantly adsorbs the edges of the bag opening and automatically flattens and smooths them, providing a neat, wrinkle-free bag opening for subsequent sealing, looping, or inoculation processes, significantly improving the success rate of automated operations. Compared to manual bag straightening or mechanical clamping, this mechanism avoids human contamination and physical damage, improves bagging efficiency, and is compatible with various sizes of mushroom bags, offering strong versatility. Its compact structure, low cost, and reliable operation make it suitable for industrialized edible mushroom production lines, demonstrating significant potential for widespread adoption. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention before the bag is rolled up;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention after the bag is rolled up;

[0019] Figure 3 This is a schematic diagram of the bag opening assembly of this utility model;

[0020] Figure 4This is a schematic diagram of the suction bag plate structure of this utility model;

[0021] In the diagram: 1. Negative pressure fan; 2. Negative pressure duct; 3. Bag opening assembly; 4. Outer tube; 5. Inner tube; 6. Bag suction plate; 7. Sealing plate; 8. Ventilation hole one; 9. Ventilation hole two; 10. Threaded interface; 11. Sealing gasket. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model discloses a negative pressure bag-straightening mechanism for edible fungi bags, comprising a negative pressure fan 1, a negative pressure duct 2, and a bag-straightening component 3. The suction end of the negative pressure fan 1 is connected to the negative pressure duct 2 via a flange. The bag-straightening component includes an outer tube 4, a sealing plate 7, an inner tube 5, and a suction plate 6. The outer tube 4 is a tubular structure with both ends connected. One end is a negative pressure connection end, which is connected to the negative pressure duct 2, and the other end is an installation end, which is fixedly connected to the suction plate 6. The inner tube 5 is coaxially arranged inside the outer tube 4. The outer side of the inner tube 5 is evenly provided with ventilation holes 8. One end of the inner tube 5 is fixedly connected to the suction plate 6, and the other end is sealed by the sealing plate 7.

[0024] The working principle of this technical solution is negative pressure adsorption and ring-shaped bonding combined bag straightening: negative pressure is generated by negative pressure fan 1 and transmitted to bag straightening part 3 through negative pressure air duct 2. The ring-shaped adsorption cavity formed by outer tube 4 and inner tube 5, combined with the ventilation hole 9 of bag suction plate 6 and the ventilation hole 8 of inner tube 5, forms a uniform and stable adsorption force on the end face of bag suction plate 6, firmly adsorbing the bag mouth of the mushroom bag; then, through mechanical lifting action, the originally folded bag mouth is straightened and pulled up at a uniform speed, which facilitates the subsequent ring and cap removal process, while adapting to the size deviation of mushroom bag, and realizing efficient and non-destructive bag straightening.

[0025] Working principle of negative pressure power transmission system

[0026] After the negative pressure fan 1 is started, its adsorption end generates a stable negative pressure, preferably -0.04 to -0.07 MPa. It is sealed to the negative pressure duct 2 through a flange to ensure that the negative pressure is not leaked and transmitted.

[0027] The threaded interface 10 of the negative pressure duct 2 and the outer duct 4 are connected. The threaded structure enables quick disassembly and assembly. The sealing gasket 11 on the outside is preferably made of nitrile rubber, which fills the thread gap and further enhances the sealing performance to prevent negative pressure from leaking at the connection.

[0028] Negative pressure enters the annular chamber formed by the outer tube 4 and the inner tube 5. Through the conduction path of the outer tube 4, the annular chamber, the ventilation hole 8 of the inner tube 5, and the ventilation hole 9 of the suction plate 6, a uniform adsorption force is finally formed on the adsorption end face of the suction plate 6, providing a power basis for adsorption bag opening.

[0029] Working principle of the three core structures of the bag opening component

[0030] Principle of the annular cavity design of outer tube 4 and inner tube 5

[0031] The outer tube 4 and the inner tube 5 are arranged coaxially to form an annular adsorption cavity. This structure can be adapted to different outer diameters, such as 50-120mm mushroom bags.

[0032] The annular cavity allows the negative pressure to be evenly distributed within the cavity, preventing insufficient local adsorption force from causing the bag opening to slip off.

[0033] Synergistic adsorption principle of ventilation hole 8 and ventilation hole 9

[0034] Ventilation holes 8 are evenly arranged around the outer side of the inner tube 5, with 2-4 sets distributed along the axial direction of the inner tube 5, which can evenly transmit the negative pressure in the annular cavity to the inner side of the suction bag plate 6.

[0035] Ventilation holes 2 9 are evenly distributed on the suction plate 6. Ventilation holes 2 9 and ventilation holes 1 8 form an adsorption channel that corresponds to the inside and outside, which improves the uniformity of adsorption force on the adsorption end face of the suction plate 6 and avoids uneven force on the bag opening, damage or uneven bag rolling caused by single-point adsorption.

[0036] Suction bag plate 6-thread connection principle

[0037] The outer ring of the suction bag plate 6 is screwed to the mounting end of the outer tube 4 through a threaded structure, and the inner ring is screwed to the fixed end of the inner tube 5 through a threaded structure. The threaded connection enables quick disassembly and fine-tuning of the position.

[0038] The installation height of the suction plate 6 can be adjusted according to the thickness and outer diameter of the bag opening of different mushroom bags, such as a fine adjustment range of 0-15mm, to further improve the adaptability of the mechanism to the size deviation of the mushroom bags, and at the same time facilitate subsequent maintenance and replacement of the suction plate 6.

[0039] The principle of silicone anti-slip layer and anti-slip texture

[0040] The suction plate 6 has a silicone anti-slip layer covering the suction end face. The silicone material is flexible and has high friction, which not only avoids rigid contact that could cause scratches or damage to the mushroom bag opening, but also enhances the friction during suction.

[0041] The uniform anti-slip texture on the surface of the anti-slip layer is preferably diamond-shaped, which further increases the coefficient of friction and prevents the bag opening from sliding relative to the suction plate 6 during the lifting process after adsorption, ensuring smooth and continuous bag-sweeping action and improving the success rate of bag sweeping.

[0042] Sealing and isolation principle of sealing plate 7

[0043] The end of the inner tube 5 away from the suction bag plate 6 is sealed by the sealing plate 7 to prevent negative pressure from leaking from the end of the inner tube 5, ensuring that all negative pressure is concentrated in the annular adsorption chamber and the ventilation hole channel of the inner tube 5, thus ensuring the adsorption strength.

[0044] The sealing plate 7 is fixedly connected to the inner tube 5, such as by bonding, screw connection, or the sealing plate 7 and the inner tube 5 are an integral structure, to prevent the sealing plate 7 from falling off due to negative pressure impact or mechanical vibration, and to improve the stability of the mechanism.

[0045] In this technical solution, the negative pressure fan 1 can be connected to the control system in the field of edible fungus processing equipment, such as an industrial-grade PLC control system, using a conventional circuit. The negative pressure fan 1 can be used with a conventional circuit structure and external mains power.

[0046] Detailed Workflow

[0047] Step 1: Equipment debugging and parameter preset

[0048] Based on the size of the mushroom bag to be processed, such as the outer diameter and the thickness of the bag opening, select a bag opening part 3 of appropriate size to ensure that the bag opening can be smoothly inserted into the inner tube 5 and that the suction plate 6 can fit against the surface of the bag opening.

[0049] Check the sealing of the connection between negative pressure fan 1, negative pressure duct 2 and external duct 4: Start negative pressure fan 1, detect the negative pressure value at the adsorption end face through pressure sensor, and ensure that the negative pressure is stable at -0.04 to -0.07 MPa and there is no leakage;

[0050] Adjust the lifting speed of the mechanical lifting mechanism, such as 50-100mm / s, to match the negative pressure adsorption force. Avoid lifting too fast, which may cause the bag opening to tear, or lifting too slowly, which may affect efficiency.

[0051] Step 2: Positioning and Setting Up the Mushroom Bags

[0052] The mushroom bags to be bagged are transported to the bagging station by the conveying mechanism of the automated production line. The positioning mechanism fixes the mushroom bags to ensure that their axis coincides with the axis of the outer tube 4 and the inner tube 5.

[0053] The robotic arm drives the bag-strapping component 3 to move, aligning the suction plate 6 with the ring cap end of the mushroom bag, so that the bag opening is fitted into the annular cavity of the outer tube 4 and the inner tube 5, and the silicone anti-slip layer of the suction plate 6 is tightly attached to the surface of the bag opening.

[0054] Step 3: Negative pressure adsorption bag opening

[0055] When the negative pressure fan 1 is started, the negative pressure is transmitted to the annular cavity through the negative pressure air duct 2 and the outer pipe 4. Through the ventilation hole 8 of the inner pipe 5 and the ventilation hole 9 of the suction plate 6, a uniform adsorption force is formed on the end face of the suction plate 6.

[0056] The adsorption force firmly fixes the opening of the mushroom bag, and the silicone anti-slip layer and anti-slip texture prevent the bag opening from sliding relative to each other. At this time, the bag opening is tightly attached to the end face of the suction plate 6 under the action of adsorption force, which is ready for the bag to be rolled up.

[0057] Step 4: Lift the bag at a constant speed

[0058] The robotic arm drives the bag-straightening component 3 to lift upwards at a uniform speed. The lifting speed and the suction force work together to ensure that the bag opening is straightened and lifted at a uniform speed under the action of the suction force.

[0059] Because the annular adsorption chamber is adapted to the size deviation of the mushroom bag, even if there are fluctuations in the outer diameter of the mushroom bag or the position of the ring cover is offset, the suction plate 6 can still maintain uniform adsorption, avoiding uneven local force at the bag opening that would cause the bag to become uneven.

[0060] The lifting stroke is set according to the folded length of the mushroom bag opening, such as 30-80mm, until the bag opening is completely rolled up and straightened, keeping it coaxial with the main body of the mushroom bag.

[0061] Step 5: Negative pressure release and mechanism reset

[0062] After the bags are cleaned, turn off the negative pressure fan 1. The suction force will disappear, and the suction plate 6 will naturally separate from the opening of the mushroom bag.

[0063] The robotic arm drives the bag-strapping component 3 to move in the opposite direction and reset to its initial position, preparing for the next mushroom bag to be sorted.

[0064] The conveying mechanism transfers the bagged mushroom bags to the subsequent ring-removing and cap-removing stations, completing one bag-removing cycle.

[0065] Step 6: Cyclic Operations and Equipment Maintenance

[0066] Repeat steps 2-5 to achieve continuous automated bag rolling of mushroom bags, with an operating efficiency of 60-80 bags / minute, which is 10 times that of manual labor;

[0067] After processing 1000 mushroom bags, check the wear of the sealing gasket 11, the integrity of the silicone anti-slip layer of the suction plate 6, and clean the debris in the ventilation hole 1 8 and ventilation hole 2 9, such as mushroom bag debris and dust, to ensure stable adsorption.

[0068] If different sizes of mushroom bags need to be adapted, the suction plate 6 of the corresponding size can be replaced by the threaded structure or the position of the inner tube 5 can be adjusted without replacing the entire set of parts, thus reducing maintenance costs.

[0069] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A negative pressure bag-straightening mechanism for edible mushroom bags, characterized in that, The device includes a negative pressure fan (1), a negative pressure duct (2), and a bag-strapping device (3). The suction end of the negative pressure fan (1) is connected to the negative pressure duct (2) via a flange. The bag-strapping device includes an outer tube (4), a sealing plate (7), an inner tube (5), and a suction plate (6). The outer tube (4) is a tubular structure with both ends connected. One end is a negative pressure connection end, which is connected to the negative pressure duct (2), and the other end is an installation end, which is fixedly connected to the suction plate (6). The inner tube (5) is coaxially arranged inside the outer tube (4). The outer side of the inner tube (5) is uniformly provided with ventilation holes (8). One end of the inner tube (5) is fixedly connected to the suction plate (6), and the other end is sealed by the sealing plate (7).

2. The negative pressure bag-straightening mechanism for edible fungus bags according to claim 1, characterized in that, The suction plate (6) has ventilation holes (9) evenly distributed on it. The suction plate (6) is an annular plate. The outer ring of the suction plate (6) is fixedly connected to the mounting end of the outer tube (4), and the inner ring of the suction plate (6) is fixed to the fixing end of the inner tube (5).

3. The negative pressure bag-straightening mechanism for edible fungus bags according to claim 1, characterized in that, The negative pressure connection end of the outer tube (4) is provided with a threaded interface (10), and a sealing gasket (11) is fitted on the outside of the threaded interface (10).

4. The negative pressure bag-straightening mechanism for edible fungus bags according to claim 1, characterized in that, The suction end face of the suction bag plate (6) is covered with a silicone anti-slip layer, and the surface of the silicone anti-slip layer is provided with uniformly distributed anti-slip textures.

5. The negative pressure bag-straightening mechanism for edible fungus bags according to claim 2, characterized in that, The outer ring of the suction bag plate (6) is screwed to the mounting end of the outer tube (4) through a threaded structure, and the inner ring of the suction bag plate (6) is screwed to the fixed end of the inner tube (5) through a threaded structure.

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