A blanking port rigid flexible connection structure

Abstract

The utility model discloses a kind of rigid soft connection structures of discharge opening, including telescopic joint, further include: the telescopic joint outer wall lower half is fixedly connected with compression ring, telescopic joint internal sliding sleeve is connected with feed chute, the telescopic joint is fixed with feed chute through clamping fixed structure, telescopic joint bottom sleeve oil nylon wear sliding plate, oil nylon wear sliding plate below is equipped with oil nylon wear bottom plate and oil nylon wear bottom plate sleeve is connected on telescopic joint, oil nylon wear bottom plate bottom is equipped with chute flange, chute flange bottom fixedly connected with interface grading sieve hopper, oil nylon wear bottom plate and chute flange are fixed with screw fixing structure. The utility model relates to material conveying equipment connecting structure technical field, especially a kind of rigid soft connection structures of discharge opening, the utility model has the following advantages, one, leakproofness of sealing;Two, wear resistance easy maintenance;Three, installation is convenient to disassemble;Four, strong adaptability.

Description

Technical Field

[0001] This utility model relates to the technical field of connection structure of material conveying equipment, and in particular to a rigid flexible connection structure for the discharge port. Background Technology

[0002] In material grading and screening systems, the connection structure between the discharge port and the grading screen hopper is crucial. Traditional connection methods have many drawbacks: for example, when using a fabric splice structure, material tends to accumulate at the splice, making cleaning difficult and resulting in poor sealing performance and significant dust leakage; when using a flexible hose rigid connection, the installation process is complex, especially in confined spaces where collisions are likely, and the reciprocating motion of the equipment during operation can easily damage the pipeline, shortening its service life. Furthermore, the traditional structure is cumbersome to disassemble the grading screen cover and hopper, requiring significant time and manpower, severely impacting production efficiency. Therefore, there is an urgent need for a discharge port connection structure that is simple in structure, reliably sealed, easy to install and maintain, and wear-resistant. Utility Model Content

[0003] In view of this, the present invention aims to provide a rigid flexible connection structure for the feed port to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0004] The technical solution of this utility model embodiment is implemented as follows:

[0005] A rigid flexible connection structure for a feed inlet includes a telescopic joint, and further includes: a pressure ring fixedly connected to the lower half of the outer wall of the telescopic joint; a feed chute slidably sleeved inside the telescopic joint; the telescopic joint and the feed chute being fixed by a snap-fit ​​fixing structure; an oil-impregnated nylon wear-resistant sliding plate sleeved at the bottom of the telescopic joint; an oil-impregnated nylon wear-resistant base plate provided below the oil-impregnated nylon wear-resistant sliding plate, with an eccentric rotation space between the oil-impregnated nylon wear-resistant base plate and the telescopic joint; a chute flange correspondingly provided at the bottom of the oil-impregnated nylon wear-resistant base plate; a grading screen hopper fixedly connected to the bottom of the chute flange; and the oil-impregnated nylon wear-resistant base plate and the chute flange being fixed by a screw fixing structure. The contact surface between the oil-impregnated nylon wear-resistant sliding plate and the oil-impregnated nylon wear-resistant base plate is designed as a planar sliding structure, which can achieve dynamic contact and sliding with the eccentric rotational movement of the grading screen under the pressure of the telescopic joint's own weight.

[0006] Preferably, the diameter space reserved between the telescopic joint and the feed chute precisely matches the eccentric swing range of the grading screen, allowing the telescopic joint to swing freely radially during eccentric rotation.

[0007] Preferably, the snap-fit ​​fixing structure includes a telescopic joint snap-fit ​​opening located on the inner side of the top of the telescopic joint, and a telescopic joint snap pin located on the top of the feed chute and corresponding to the telescopic joint snap-fit ​​opening.

[0008] Preferably, the screw fixing structure includes screw holes that uniformly penetrate the oil-resistant nylon base plate and the chute flange, and the screw holes are internally threaded with M8 countersunk screws.

[0009] Preferably, the grading screen hopper and the chute flange are fixed by welding.

[0010] Preferably, both the oiled nylon wear-resistant sliding plate and the oiled nylon wear-resistant base plate are made of oiled nylon material, and the pressure ring is used to press the oiled nylon wear-resistant sliding plate to fit it into the oiled nylon wear-resistant base plate.

[0011] Preferably, the lower end of the feed chute extends into the grading screen hopper to prevent material and dust from rebounding.

[0012] The present invention has the following advantages due to the adoption of the above technical solution:

[0013] 1. Sealing and Leakage Prevention: Under the pressure of its own weight, the wear-resistant sliding plate and the wear-resistant base plate of the telescopic joint are always in contact, and the wear is automatically repaired and fitted together. The design of the sleeve extending into the hopper provides double protection against dust and material spillage, improving the working environment.

[0014] 2. Wear-resistant and easy to maintain: The wear-resistant sliding plate and base plate are made of oil-resistant nylon material, which has excellent wear resistance. They are fixed with countersunk screws, and the worn parts can be quickly replaced by simply removing the screws, resulting in low maintenance costs.

[0015] 3. Easy installation and disassembly: The combination of snap-fit ​​and screw-fixed structures allows for quick assembly and disassembly of the feed chute and the expansion joint, as well as the connection between the wear-resistant base plate and the chute flange. Compared with traditional structures, this significantly shortens installation and maintenance time and improves production efficiency.

[0016] IV. Adaptability of Eccentric Rotary Operation: Through the matching design of diameter space and swing amplitude range, the connection structure can swing freely with the eccentric rotary motion of the grading screen, avoiding the jamming and collision problems of traditional rigid connection under eccentric working conditions.

[0017] The above overview is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features of the present invention will become readily apparent from the accompanying drawings and the following detailed description. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural diagram of the present invention;

[0020] Figure 2 This is a structural diagram from another perspective of the present invention;

[0021] Figure 3 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 4 This is a cross-sectional view of the present invention from another perspective.

[0023] Reference numerals in the attached diagram: 1. Telescopic union; 2. Pressure ring; 3. Feed chute; 4. Telescopic union snap-fit; 5. Telescopic union clip; 6. Oil-coated nylon wear-resistant sliding plate; 7. Oil-coated nylon wear-resistant base plate; 8. Chute flange; 9. Connecting to the grading screen hopper; 10. Screw hole; 11. M8 countersunk screw; 12. Snap-fit ​​fixing structure; 13. Screw fixing structure. Detailed Implementation

[0024] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of this invention. Therefore, the drawings and description are considered exemplary in nature and not restrictive.

[0025] It is important to note that terms such as "first," "second," "symmetric," and "array" are used only to distinguish between descriptive and positional descriptions and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features specified with terms such as "first" or "symmetric" may explicitly or implicitly include one or more of that feature; similarly, when the quantity of certain features is not limited by words such as "two" or "three," it should be noted that such features also explicitly or implicitly include one or more features.

[0026] In this utility model, unless otherwise explicitly specified and limited, terms such as "installation," "connection," and "fixation" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral molding; they can refer to a mechanical connection, a direct connection, a welding connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the accompanying drawings and specific circumstances.

[0027] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0028] like Figure 1-4 The present invention provides a rigid flexible connection structure for a feed inlet, including a telescopic joint 1, and further including: a pressure ring 2 fixedly connected to the lower half of the outer wall of the telescopic joint 1; a feed chute 3 slidably sleeved inside the telescopic joint 1; the telescopic joint 1 and the feed chute 3 are fixed by a snap-fit ​​fixing structure 12; an oil-impregnated nylon wear-resistant sliding plate 6 is sleeved at the bottom of the telescopic joint 1; an oil-impregnated nylon wear-resistant base plate 7 is provided below the oil-impregnated nylon wear-resistant sliding plate 6, and an eccentric rotation space is left between the oil-impregnated nylon wear-resistant base plate 7 and the telescopic joint 1; a corresponding chute is provided at the bottom of the oil-impregnated nylon wear-resistant base plate 7. The bottom of the pipe flange 8 is fixedly connected to the grading screen hopper 9. The oil nylon wear-resistant base plate 7 is fixed to the pipe flange 8 by the screw fixing structure 13. The contact surface between the oil nylon wear-resistant sliding plate 6 and the oil nylon wear-resistant base plate 7 is designed as a planar sliding structure. Under the pressure of its own weight, the telescopic joint 1 can achieve dynamic contact and sliding with the eccentric movement of the grading screen. The reserved diameter space between the telescopic joint 1 and the feed chute 3 precisely matches the eccentric swing range of the grading screen, so that the telescopic joint 1 can swing freely in the radial direction during eccentric rotation.

[0029] In this embodiment, specifically, the snap-fit ​​fixing structure 12 includes a telescopic joint snap 4 located on the inner side of the top of the telescopic joint 1, and a telescopic joint snap 5 located on the top of the feed chute 3 and corresponding to the telescopic joint snap 4. The screw fixing structure 13 includes screw holes 10 that uniformly penetrate the oil nylon wear-resistant base plate 7 and the chute flange 8, and an M8 countersunk screw 11 is internally threaded into the screw hole 10.

[0030] In this embodiment, specifically, the grading screen hopper 9 and the chute flange 8 are fixed by welding. The oil nylon wear-resistant sliding plate 6 and the oil nylon wear-resistant base plate 7 are both made of oil nylon. The pressure ring 2 is used to press the oil nylon wear-resistant sliding plate 6 so that it fits against the oil nylon wear-resistant base plate 7. The lower end of the feed chute 3 extends into the grading screen hopper 9 to prevent material and dust from rebounding.

[0031] In this embodiment, specifically, when the grading screen is in a gyratory eccentric operation state, the telescopic joint 1, due to the reserved diameter space, can freely swing radially within the swing range of the grading screen. Its own weight continuously acts on the oil-nylon wear-resistant sliding plate 6 through the pressure ring 2, ensuring that the wear-resistant sliding plate 6 and the wear-resistant base plate 7 always maintain close sliding contact during eccentric movement. This design allows the telescopic joint 1 to move with the eccentric trajectory of the grading screen, while preventing material and dust leakage from the sliding surface through the dynamic contact of the wear-resistant plate. The snap-fit ​​structure between the feed chute 3 and the telescopic joint 1 does not restrict the radial swing freedom, ensuring no motion interference during eccentric operation.

[0032] When this utility model is in operation:

[0033] I. Implementation method of rigid flexible connection structure for a single feed port

[0034] (I) Component Assembly Steps

[0035] 1. Bottom foundation fixed

[0036] First, the chute flange 8 is welded to the grading screen hopper 9 to form a rigid support base. During welding, ensure that the upper surface of the chute flange 8 is flat to facilitate the subsequent installation of the oil-impregnated nylon wear-resistant base plate 7.

[0037] 2. Installation of wear-resistant base plate

[0038] Place the oil-coated nylon wear-resistant base plate 7 above the chute flange 8, aligning their screw holes 10. Use M8 countersunk screws 11 to pass through the screw holes 10 and fasten the oil-coated nylon wear-resistant base plate 7 to the chute flange 8 via threaded connection. The head of the countersunk screw 11 must be fully embedded in the screw hole 10 to avoid protruding surface that could cause material accumulation.

[0039] 3. Assembly of telescopic joint and wear-resistant sliding plate

[0040] The oil-impregnated nylon wear-resistant sliding plate 6 is fitted onto the bottom of the telescopic joint 1, ensuring that the wear-resistant sliding plate 6 can slide freely along the axial direction of the telescopic joint 1. Then, the pressure ring 2 is fixed to the lower half of the outer wall of the telescopic joint 1. Through the downward pressure of the pressure ring 2, the upper surface of the oil-impregnated nylon wear-resistant sliding plate 6 is brought into close contact with the pressure ring 2, thus initially positioning the wear-resistant sliding plate 6.

[0041] 4. Feed chute clamping

[0042] Insert the feed chute 3 into the telescopic union 1 and rotate the feed chute 3 circumferentially. This causes the telescopic union clip 5 to temporarily fix the sleeve when the upper and lower connections are separated, preventing free slippage. After the clip fixing structure 12 is completed, the feed chute 3 and the telescopic union 1 form a detachable fixed connection. At the same time, the lower end of the feed chute 3 extends into the grading screen hopper 9, forming an anti-rebound structure.

[0043] (II) Working Status

[0044] During equipment operation, the telescopic joint 1 and its internal feed chute 3 naturally droop under their own weight, causing the oil-impregnated nylon wear-resistant sliding plate 6 and the oil-impregnated nylon wear-resistant base plate 7 to fit tightly together, forming a dynamic sealing surface. When the grading screen swings, the telescopic joint 1 can move freely within the swing range of the grading screen. At this time, the wear-resistant sliding plate 6 and the wear-resistant base plate 7 remain in contact under the pressure of the telescopic joint 1's own weight, preventing dust and material leakage. When material falls from the feed chute 3 into the receiving grading screen hopper 9, the feed chute 3, being deep inside the hopper, effectively prevents material rebound.

[0045] (III) Disassembly and Maintenance

[0046] When it is necessary to disassemble the grading screen cover or replace the wear-resistant parts, remove the feed chute 3 from the telescopic joint 1; then remove the M8 countersunk screw 11 to remove the oil-coated nylon wear-resistant sliding plate 6 and the oil-coated nylon wear-resistant base plate 7 for replacement. The entire process does not require damage to the welded structure, making maintenance convenient.

[0047] II. Implementation Methods for Horizontal Linkage

[0048] (I) Linkage Structure Design

[0049] When handling large flow rates of materials or adapting to wide-width grading screens, the rigid flexible connection structure of the discharge port can be arranged in multiple ≥2 configurations along the transverse direction to form a linkage assembly, as detailed below:

[0050] 1. Shared supporting foundation

[0051] Adjacent chute flanges 8 are fixed as a whole by additional connecting flanges or welding to form a continuous support base. Each chute flange 8 is equipped with an independent oil-impregnated nylon wear-resistant base plate 7, telescopic joint 1, and feed chute 3. The longitudinal structure of each component is consistent with that of a single implementation.

[0052] 2. Telescopic joint linkage connection

[0053] Adjacent telescopic joints 1 are fixed together by rigid connectors to ensure that multiple telescopic joints 1 move synchronously when the grading screen swings. The installation position of the connectors should avoid the snap-fit ​​fixing structure 12 and should not affect the disassembly of the feed chute 3.

[0054] 3. Feed chute array

[0055] The upper ends of the horizontally arranged feed chutes 3 can be connected to the main feed pipe, and the lower ends are respectively inserted into the corresponding graded screen hoppers 9 to form a material diversion array and realize multi-channel synchronous feeding.

[0056] (II) Working Principle of Linkage

[0057] When used in conjunction with each other, multiple telescopic joints 1 form a whole through rigid connecting parts. During the swinging process of the grading screen, each telescopic joint 1 moves synchronously with the swing amplitude, and its own weight pressure is synchronously transmitted to the corresponding oil-impregnated nylon wear-resistant sliding plate 6 through the pressure ring 2, so that all wear-resistant sliding plates 6 keep in close contact with the wear-resistant base plate 7. Due to the rigid connection of the shared support base, the stability of the linkage component is significantly improved, which can avoid the sealing failure problem caused by the independent swinging of a single structure. At the same time, multi-channel feeding can greatly improve material handling efficiency.

[0058] (III) Advantages of the linkage structure

[0059] High-volume material handling: The horizontally arranged linkage structure can expand the number of feeding channels according to production needs, adapting to large-scale material conveying scenarios.

[0060] Synchronous sealing guarantee: Rigid connectors ensure that each telescopic joint moves synchronously, maintaining the stability of the overall sealing surface and preventing dust leakage during linkage.

[0061] Modular maintenance: Each linkage unit can be disassembled and maintained independently. For example, if the wear plate of a certain unit is worn, only the M8 countersunk screw 11 and the snap-fit ​​fixing structure 12 of the corresponding unit need to be removed, which will not affect the operation of other units and has high maintenance efficiency.

[0062] III. Key Technical Details

[0063] 1. Material compatibility: The oil-coated nylon wear-resistant sliding plate 6 and the oil-coated nylon wear-resistant base plate 7 are made of the same material, with a low coefficient of friction and wear resistance, ensuring that the sealing performance is maintained after long-term sliding and contact.

[0064] 2. Synergy between snap-fit ​​and screw fixing: The snap-fit ​​fixing structure 12 enables quick assembly and disassembly of the feed chute 3 and the telescopic joint 1, while the screw fixing structure 13 ensures the rigid connection between the wear-resistant base plate 7 and the chute flange 8. The two work together to ensure the disassembly and stability of the structure.

[0065] 3. Spatial adaptability: The diameter space design of the telescopic joint 1 and the hopper meets the swing amplitude requirements of the grading screen, and the lateral arrangement size of the linkage structure can be flexibly adjusted according to the site space to adapt to different equipment layouts.

[0066] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this utility model, and these should all be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A rigid flexible connection structure for a feed inlet, comprising a telescopic joint (1), characterized in that, Also includes: The lower half of the outer wall of the telescopic joint (1) is fixed with a pressure ring (2), and the inside of the telescopic joint (1) is slidably fitted with a feed chute (3). The telescopic joint (1) and the feed chute (3) are fixed by a snap-fit ​​fixing structure (12). The bottom of the telescopic joint (1) is fitted with an oil-impregnated nylon wear-resistant sliding plate (6). Below the oil-impregnated nylon wear-resistant sliding plate (6) is an oil-impregnated nylon wear-resistant base plate (7), and the oil-impregnated nylon wear-resistant base plate (7) and the telescopic joint (1) have an eccentric rotation space. The bottom of the wear-resistant base plate (7) is provided with a chute flange (8), and the bottom of the chute flange (8) is fixedly connected to the grading screen hopper (9). The wear-resistant base plate (7) and the chute flange (8) are fixed by a screw fixing structure (13). The contact surface between the wear-resistant sliding plate (6) and the wear-resistant base plate (7) is designed as a planar sliding structure. Under the pressure of the self-weight of the telescopic joint (1), it can achieve dynamic contact sliding with the eccentric rotation of the grading screen and automatically repair contact with wear.

2. The rigid flexible connection structure for the feed inlet according to claim 1, characterized in that: The reserved diameter space between the telescopic joint (1) and the feed chute (3) precisely matches the eccentric swing range of the grading screen, allowing the telescopic joint (1) to swing freely radially during eccentric rotation.

3. The rigid flexible connection structure for the feed inlet according to claim 1, characterized in that: The snap-fit ​​fixing structure (12) includes a telescopic snap-fit ​​opening (4) located on the inner side of the top of the telescopic snap-fit ​​(1), and a telescopic snap-fit ​​pin (5) located on the top of the feed chute (3) and corresponding to the telescopic snap-fit ​​opening (4).

4. The rigid flexible connection structure for the feed inlet according to claim 1, characterized in that: The screw fixing structure (13) includes screw holes (10) that uniformly penetrate the oil nylon wear-resistant base plate (7) and the chute flange (8), and the screw holes (10) are internally threaded with M8 countersunk screws (11).

5. The rigid flexible connection structure for the feed inlet according to claim 1, characterized in that: The grading sieve hopper (9) and the chute flange (8) are fixed by welding.

6. The rigid flexible connection structure for the feed inlet according to claim 1, characterized in that: Both the oil nylon wear-resistant sliding plate (6) and the oil nylon wear-resistant base plate (7) are made of oil nylon. The pressure ring (2) is used to press the oil nylon wear-resistant sliding plate (6) so that it fits against the oil nylon wear-resistant base plate (7).

7. The rigid flexible connection structure for the feed inlet according to claim 1, characterized in that: The lower end of the feed chute (3) extends into the grading screen hopper (9) to prevent material and dust from rebounding.

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