Dustproof folding baffle for feeding opening of mixing machine

Abstract

The utility model discloses a dustproof folding baffle for a feeding port of a mixing machine, which comprises a plurality of groups of folding single plates which are sequentially hinged from front to back, a flexible dustproof cover is fixedly arranged on the upper side of each folding single plate, and outer chain links or inner chain links which are mutually hinged are arranged on the left side and the right side of each folding single plate. A handle used for driving all the folding single plates to be unfolded or folded is arranged on the folding single plate close to the front side of the feeding port. The folding single plates are tightly folded by arranging the hinge seats and the hinge grooves, the inner chain links and the outer chain links are provided with the upturning limiting blocks and the downturning limiting blocks in a matched mode, the elastic or flexible contact units are arranged for buffering collision, noise is lowered, and the service life is prolonged. The rolling wheels are arranged at the folding positions of the baffles and matched with the guide rails, the rolling wheels are magnetically attracted and positioned through the annular magnets, the self-locking type locking structures are arranged at the front ends of the guide rails, the stability after folding is improved, and the feeding device is suitable for feeding operation of the mixing machine for powdery or granular materials and meets the requirement for safety production in modern food processing.

Description

Technical Field

[0001] This utility model relates to the field of industrial machinery and equipment, specifically to a dustproof folding baffle for the feed inlet of a mixer. Background Technology

[0002] A mixer is a material mixing device widely used in the food, chemical, and pharmaceutical industries. It mainly utilizes mechanical force and gravity to uniformly mix various raw materials. The feed inlet, as the only channel for materials to enter the mixing chamber, needs to be sealed during mixer operation to prevent dust from overflowing and to prevent external contaminants from entering and causing pollution. This is especially important for food production processes where product quality (including intermediate and final products) requires even stricter control.

[0003] In existing technologies, most mixers use a flip-top structure for their feed inlets. The operation involves the operator pulling a handle to open the top cover, feeding the material, and then pulling it down to close it using its own weight. While this structure is relatively simple and inexpensive to manufacture, it has shortcomings in practical production applications. For example, the flip-top can easily cause fingers or hands to be pinched during closure, and if the operator does not avoid the pinched area in time, varying degrees of crush injuries may occur. Furthermore, because a limiting plate restricts the opening of the cover at the feed inlet, the cover is quite high when open, requiring operators to raise their arms or even stand on tiptoe to reach it. This is inconvenient and increases the risk of falls or sprains due to instability, increasing operational risks.

[0004] Therefore, there is an urgent need to design a dustproof folding baffle for the feed port of a mixer, which can be opened or closed by operators to facilitate feeding, while meeting the requirements of modern safe production. Utility Model Content

[0005] The purpose of this utility model is to provide a dustproof folding baffle for the feeding port of a mixer. This baffle can improve the safety and convenience of feeding operations, effectively prevent dust from overflowing, and achieve automatic folding and stable locking of the baffle structure without affecting the feeding operation. This solves the problems of pinching risk and inconvenient opening operation of the feeding port cover in the prior art.

[0006] The technical solution adopted by this utility model to solve the above problems is: a dustproof folding baffle for the feed port of a mixer, comprising several sets of folding single plates that are hinged together in sequence, a flexible dustproof cover is fixedly provided on the upper side of the folding single plate, and external or internal chain links that are hinged to each other are provided on the left and right sides of the folding single plate, and a handle for driving all the folding single plates to be pushed to the rear side of the feed port or pulled to the front side of the feed port to unfold is connected and fixed on the upper side of the folding single plate near the front side of the feed port.

[0007] Preferably, the hinge portion of the folding panel is provided with hinge seats and hinge grooves that intersect each other after folding.

[0008] Preferably, an upward limiting block is provided above one end of the inner link to restrict the upward flipping of the outer link hinged to that part, and a downward limiting block is provided below the other end to restrict the downward flipping of the outer link hinged to that part.

[0009] Preferably, both the upward-flipping limiting block and the downward-flipping limiting block are provided with contact units that make elastic or flexible contact with the outer link. The contact units can be any one or a combination of springs or flexible rubber pads.

[0010] Preferably, a roller is rotatably provided at the hinge part near the downward limiting block, and guide rails adapted to the rolling of the roller are provided on the left and right sides of the feeding port.

[0011] Preferably, the roller is a ring magnet.

[0012] Preferably, the front end of the guide rail is provided with a locking component, which includes a lock seat and a lock block that is elastically hinged to the upper end of the lock seat by a torsion spring. One end of the lock block is provided with a lock head for inserting into the inner link, and the other end is provided with a pressing part for disengaging the lock head from the inner link.

[0013] Preferably, the bottom of the lock head is provided as a slope, with the slope tilting downwards towards the front.

[0014] Compared with the prior art, this utility model has the following advantages and effects:

[0015] This invention utilizes a folding panel and an inner / outer link limiting mechanism in a coordinated design. Operators can quickly unfold and fold the feed inlet baffle with just one hand by pulling or pushing the handle, completely eliminating the risk of pinching hands and the inconvenience of raising the handle too high, a problem inherent in traditional flip-top structures. Interlaced hinge seats and grooves are designed at the folding section, allowing the hinge seats of adjacent folding panels to slide tightly into the grooves after folding, significantly reducing the overall thickness and maximizing the use of space behind the feed inlet. The upward and downward limiting blocks, in conjunction with springs or flexible rubber pads, buffer the impact on the outer links during unfolding, protecting the hinge components from excessive wear, significantly reducing operating noise, and extending service life. The mutual attraction between the rollers made of ring magnets ensures magnetic stability of each roller in the folded state. The torsion spring locking element at the front end of the guide rail automatically inserts into the inner link limiting hole after unfolding, preventing secondary opening due to vibration. The locking element also has a self-locking function. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the mixer according to an embodiment of the present invention.

[0017] Figure 2This is a schematic diagram of the structure of the dustproof folding baffle at the feeding port in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the structure of the baffle when the dust cover is removed and folded according to an embodiment of the present invention.

[0019] Figure 4 This is a diagram showing the usage state of the feed inlet when the baffle is unfolded and the locking component closes the feed port according to an embodiment of this utility model.

[0020] Figure 5 yes Figure 4 Enlarged view of the local structure at the marked location

[0021] Figure 6 This is a diagram showing the usage state of adjacent magnetic rollers attracting each other when the baffle is unfolded and folded according to an embodiment of this utility model.

[0022] Figure 7 This is a structural schematic diagram of the locking component according to an embodiment of the present invention.

[0023] Figure 1: Mixer 1, Feeding port 10, Folding plate 11, Dust cover 12, Outer link 13, Inner link 14, Upward limit block 141, Downward limit block 142, Pin 15, Bushing 16, Handle 17, Hinge seat 18, Hinge groove 19, Contact unit 21, Roller 22, Guide rail 23, Locking part 24, Lock seat 25, Lock block 26, Lock head 27, Pressing part 28. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings and through embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0025] Example: See Figures 1-7 In this embodiment, a dustproof folding baffle for the feed port 10 of a mixer 1 is provided. Specifically, it is used for dust prevention during the feeding process of powdery or granular materials. Specifically, it includes several sets of folding single plates 11 that are hinged together in sequence. A flexible dust cover 12 is fixedly provided on the upper side of the folding single plate 11. External chain links 13 or internal chain links 14 that are hinged to each other are provided on the left and right sides of the folding single plate 11. A handle 17 is connected and fixedly provided on the upper side of the folding single plate 11 near the front side of the feed port 10 for driving all the folding single plates 11 to be pushed to the rear side of the feed port 10 to fold or pulled to the front side of the feed port 10 to unfold.

[0026] Specifically, in this embodiment, the operator only needs to hold the handle 17 near the front of the feeding port 10 and pull the baffle forward or push it backward, so that each folded single plate 11 unfolds or folds in sequence. With the cooperation of the upper flexible dust cover 12, a closed but openable baffle structure is formed, thereby effectively preventing dust from overflowing during the operation of the mixer 1. The folded single plates 11 are hinged to each other by through-pins 15, and the outer link 13 and the inner link 14 are hinged to each other by bushings 16, and the two ends of the shaft are inserted into the bushings 16 and rotated. Compared with the traditional flip-top structure, this utility model achieves the opening and closing of the feed port 10 of the mixer 1 and the integrated storage of the baffle through the coordinated design of the folding single plate 11 and the chain link limiting mechanism (outer chain link 13 and inner chain link 14). The operator only needs to pull the handle 17 with one hand to complete the unfolding and folding of the baffle of the feed port 10, which completely eliminates the risk of pinching hands when operating the flip-top and the problem of inconvenient operation when closing.

[0027] See Figure 3 The hinge portion of the folding single panel 11 is provided with hinge seats 18 and hinge grooves 19 that are interlocked after folding. The shaft passes through the hinge seats 18 to achieve the hinge connection between adjacent folding single panels 11, so that after folding, the hinge seats 18 of adjacent folding single panels 11 invade the hinge grooves 19, and the included angle between two adjacent folding single panels 11 after folding is smaller, reducing the space occupied by the feeding port 10 after the whole (all folding single panels 11) is folded, thereby reducing the impact on the normal use of the feeding port 10.

[0028] In this embodiment, an upward limiting block 141 is provided above one end of the inner link 14 to restrict the upward flipping of the outer link 13 hinged to that part, and a downward limiting block 142 is provided below the other end to restrict the downward flipping of the outer link 13 hinged to that part. With the cooperation of the upward limiting block 141 and the downward limiting block 142, during the folding process, the outer link 13 corresponding to each folded panel 11 is guided by the limiting blocks in sequence—adjacent links first flip upward and are prevented by the upward limiting block 141, and the next link flips downward and is prevented by the downward limiting block 142. This alternating up and down folding ensures that the folded panels 11 are stacked in a staggered manner after folding, with the upper panel facing upward and the lower panel facing downward. Finally, in the fully folded state, the cross-section of the entire baffle presents a zigzag profile.

[0029] See Figure 5The upward limiting block 141 and the downward limiting block 142 are both provided with contact units 21 that make elastic or flexible contact with the upper and lower sides of the outer link 13. When the baffle is unfolded, the upward limiting block 141 and the downward limiting block 142 collide with the outer link 13. Through the setting of the contact unit 21, the impact between the outer link plate and the inner link plate can be buffered, which can alleviate the damage to the hinge structure (upward limiting block 141, downward limiting block 142 and outer link 13) caused by the impact, and at the same time reduce noise. In this embodiment, the contact unit 21 can be any or a combination of spring or flexible rubber pad.

[0030] See Figure 6 In this embodiment, a roller 22 is rotatably mounted near the hinged portion of the downward limiting block 142. Guide rails 23, adapted to the rolling motion of the roller 22, are provided on both sides of the feeding port 10. This allows the roller 22 to roll along the guide rails 23 when the operator pushes or pulls the handle 17. The rolling friction reduces resistance during operation, lowering the operator's workload. The roller 22 uses a ring magnet, ensuring that the rollers 22 attract each other after the baffle is folded, maintaining the baffle in a folded state and increasing its stability.

[0031] See Figure 7 The guide rail 23 has a locking member 24 at its front end. The locking member 24 includes a locking seat 25 fixed to the guide rail 23 and a locking block 26 elastically hinged to the upper end of the locking seat 25 by a torsion spring. One end of the locking block 26 has a locking head 27 for inserting into the inner link 14, and the other end has a pressing part 28 for disengaging the locking head 27 from the inner link 14. The locking head 27 limits the position of the pair of rollers 22 at the frontmost side after the baffle is unfolded, preventing the rollers 22 from retracting and the baffle from reopening due to vibrations generated during the operation of the mixer 1.

[0032] The bottom of the lock head 27 is set as an inclined surface, which slopes downward towards the front. When the operator pulls the handle 17, the roller 22 at the front end contacts the inclined surface. The roller 22 rolls along the guide rail 23 and pushes the lock head 27 along the inclined surface, thereby driving the lock head 27 to flip up along the hinge point between the lock block 26 and the lock seat 25. After the roller 22 passes the lock block 26, the lock block 26 flips down under the elastic force of the torsion spring, so that the lock head 27 is inserted into the inner link 14 again to achieve self-locking.

[0033] The outer link 13, inner link 14, and guide rail 23 of the folding baffle of this utility model are prone to dust accumulation, which affects the opening or closing of the folding baffle. The above-mentioned areas can be cleaned regularly by the high-speed airflow of a high-pressure air gun, and the hinge parts can be lubricated regularly to maintain the smoothness of the opening and closing of the folding baffle.

[0034] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A dustproof folding baffle for a feeding port of a mixer, characterized in that, It includes several sets of folding panels that are hinged together in sequence. A flexible dust cover is fixedly installed on the upper side of the folding panels. External or internal links are hinged to each other on the left and right sides of the folding panels. A handle is fixedly connected to the upper side of the folding panels near the front of the feeding port to drive all the folding panels to be pushed to the rear of the feeding port or pulled to the front of the feeding port to unfold.

2. The dustproof folding baffle for the feeding port of a mixer according to claim 1, characterized in that: The hinge portion of the folding panel is provided with hinge seats and hinge grooves that intersect each other after folding.

3. The dustproof folding baffle for the feeding port of a mixer according to claim 1, characterized in that: An upward limiting block is provided above one end of the inner link to restrict the upward flipping of the outer link hinged to that part, and a downward limiting block is provided below the other end to restrict the downward flipping of the outer link hinged to that part.

4. The dustproof folding baffle for the feeding port of a mixer according to claim 3, characterized in that: Both the upward and downward limiting blocks are provided with contact units that make elastic or flexible contact with the outer link. The contact units can be any one or a combination of springs or flexible rubber pads.

5. The dustproof folding baffle for the feeding port of a mixer according to claim 3, characterized in that: Rollers are rotatably installed at the hinged part near the downward limiting block, and guide rails adapted to the rolling of the rollers are provided on the left and right sides of the feeding port.

6. The dustproof folding baffle for the feeding port of a mixer according to claim 5, characterized in that: The roller uses a ring magnet.

7. The dustproof folding baffle for the feeding port of a mixer according to claim 5, characterized in that: The front end of the guide rail is provided with a locking component, which includes a lock seat and a lock block that is elastically hinged to the upper end of the lock seat by a torsion spring. One end of the lock block is provided with a lock head for inserting into the inner link, and the other end is provided with a pressing part for disengaging the lock head from the inner link.

8. A dustproof folding baffle for the feed inlet of a mixer according to claim 7, characterized in that: The bottom of the lock head is set as a slope, which slopes downward towards the front.

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