A belt conveyor with a floating press roller

Abstract

The utility model belongs to material conveying technical field, concretely relates to a belt conveyor with floating compression roller. It includes the conveyer belt for bearing and conveying material, the floating support is straddled in the conveyer belt top, the floating support at least includes the guide column distribution in the conveyer belt both sides, the elastic piece group is sleeved in the guide column, and every the elastic piece group includes the first elastic piece and the second elastic piece, the compression roller assembly is straddled in the conveyer belt top, two ends of compression roller assembly are connected with the guide column of both sides sliding respectively, and two ends of compression roller assembly are connected to the first elastic piece and the second elastic piece between the same side respectively. Compression roller assembly extrudes the hard block of board in the bag in the rolling process, and effectively crushes and scatters it.

Description

Technical Field

[0001] This utility model belongs to the field of material conveying technology, specifically relating to a belt conveyor with floating pressure rollers. Background Technology

[0002] Soybean meal is widely used as a common basic raw material in feed processing, agriculture, and food distribution. For ease of transportation, handling, and storage, soybean meal is usually packaged in bags. However, during long-term stacking, storage, or long-distance transportation, bagged soybean meal is easily agglomerated due to factors such as its own weight, air venting inside the packaging bag, and changes in ambient temperature and humidity. This agglomeration of the powder particles can lead to severe caking and the formation of hard lumps.

[0003] Currently, to address the issue of bagged materials caking, the industry typically installs pressure roller devices on conveyor lines to roll and compact the bags as they travel. However, existing pressure roller devices often rely on active adjustment of the gap between the rollers and the conveyor belt. This can be achieved through methods such as raising and lowering via a separate motor-driven screw, or using cylinders or hydraulic cylinders for rigid positioning. Operators usually need to pre-adjust the rollers to a fixed height based on the estimated standard bag dimensions; or they may rely on complex electronic sensing systems to detect the material height and actively adjust accordingly.

[0004] However, because bagged materials are flexible packaging, after initial handling and irregular stacking, the internal material will flow and redistribute, resulting in random differences in the thickness of each bag when manually placed onto the conveyor belt. Even the thickness of the front and rear ends of the same bag can be drastically different. Faced with such highly unevenly thick bagged materials, existing active adjustment devices are slow to react and have rigid structures: when the gap between the pressure rollers is too large or when encountering a thinner section of bag, the pressure rollers cannot contact the material or the squeezing force is insufficient, making it impossible to effectively break up hard lumps of soybean meal; while when the gap between the pressure rollers is too small or when encountering a thicker, extremely hard section of bag, the rigid pressure rollers without cushioning will exert enormous destructive force, easily directly crushing the packaging bag and causing material leakage. Utility Model Content

[0005] To solve the above-mentioned problems in the prior art, this utility model provides a belt conveyor with a floating pressure roller.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A belt conveyor with a floating pressure roller is provided, comprising:

[0008] Conveyor belts are used to carry and transport materials.

[0009] A floating support is installed across the conveyor belt, and the floating support includes at least guide columns distributed on both sides of the conveyor belt;

[0010] An elastic element assembly is sleeved on the guide post, and each elastic element assembly includes a first elastic element and a second elastic element;

[0011] A pressure roller assembly spans across the conveyor belt, with both ends of the pressure roller assembly slidably connected to the guide posts on both sides, and both ends of the pressure roller assembly being connected to the first elastic member and the second elastic member on the same side, respectively.

[0012] Furthermore, a floating conveying gap is formed between the pressure roller assembly and the conveyor belt;

[0013] Adjustment element, connected to the guide post;

[0014] The adjusting component is configured to adjust the preload of the first elastic element and / or the second elastic element; the outer circumferential surface of the guide post is provided with an external thread; the adjusting component is an adjusting nut, which engages with the external thread and abuts against the end of the first elastic element and / or the second elastic element.

[0015] Preferably, the pressure roller assembly includes:

[0016] The platform spans across the conveyor belt, and its two ends are respectively connected to the first elastic member and the second elastic member on the same side;

[0017] A driving component is disposed on the upper surface of the platform;

[0018] The pressure roller is rotatably connected to the lower end face of the platform and is connected to the drive component for transmission.

[0019] Furthermore, the conveying gap is formed between the pressure roller and the conveyor belt.

[0020] Preferably, the pressure roller has a plurality of raised ribs, which are spaced apart on the outer circumferential surface of the pressure roller and extend along the axial direction of the pressure roller.

[0021] Preferably, the platform has four connecting corners, which are respectively located at the four corners of the platform;

[0022] Each of the connecting corner portions is respectively sleeved on the corresponding guide post and sandwiched between the first elastic member and the second elastic member on the same side.

[0023] Preferably, the connecting corner is provided with a guide sleeve, which is fitted and slidably connected to the guide post;

[0024] Furthermore, one end of the first elastic element and one end of the second elastic element respectively abut against the upper and lower end faces of the guide sleeve.

[0025] Preferably, the driving component includes a motor and a drive sprocket, and the end of the pressure roller is coaxially provided with a driven sprocket;

[0026] Furthermore, the driving sprocket and the driven sprocket are connected by a transmission chain.

[0027] Preferably, the feed end of the conveyor belt is provided with a guiding mechanism, which includes two guide plates respectively disposed on both sides of the conveyor belt, and the two guide plates are arranged in a gradually narrowing shape along the material conveying direction.

[0028] Preferably, the floating support further includes a top frame, which is connected to the top of the guide columns distributed on both sides of the conveyor belt.

[0029] This utility model provides a belt conveyor with a floating pressure roller. The beneficial effects of this utility model are as follows:

[0030] The pressure roller assembly achieves vertical floating adjustment capability through the guide pillars on both sides and the arranged first and second elastic elements. When the thickness of the bagged material on the conveyor belt is uneven or there are local bulges, the pressure roller assembly can actively float upward and retract according to the actual contour of the material to avoid rigid jamming or material blockage. At the same time, the compressed first elastic element will continuously apply gentle kneading pressure downward, so that the pressure roller assembly squeezes the hardened lumps in the bag during the rolling process, effectively crushing and dispersing them. Attached Figure Description

[0031] Figure 1 This is a perspective view of the belt conveyor with floating pressure rollers proposed in this utility model;

[0032] Figure 2 This is a front view of the belt conveyor with floating pressure rollers proposed in this utility model;

[0033] Figure 3 This is a side view of the belt conveyor with floating pressure rollers proposed in this utility model;

[0034] Figure 4 This is a top view of the belt conveyor with floating pressure rollers proposed in this utility model;

[0035] Figure 5 This is a schematic diagram of the structure of the floating pressure roller with elastic components proposed in this utility model.

[0036] Explanation of reference numerals in the attached figures:

[0037] 1. Conveyor belt; 2. Guide column; 301. First elastic element; 302. Second elastic element; 401. Platform; 4011. Connecting corner; 4012. Guide sleeve; 402. Drive component; 403. Pressure roller; 5. Adjusting component; 6. Guiding mechanism; 7. Top frame. Detailed Implementation

[0038] 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.

[0039] Please see Figures 1-5 As shown, the specific embodiments provided by this utility model are as follows:

[0040] like Figures 1 to 4 As shown, an embodiment of this utility model proposes a belt conveyor with a floating pressure roller 403, which is composed of a conveyor belt 1, a floating support, an elastic component group and a pressure roller assembly.

[0041] The main function of conveyor belt 1 is to carry bagged materials, such as bagged soybean meal containing hardened lumps, and to continuously transport them forward along a set horizontal or inclined conveying direction. In order to provide a spatial foundation and structural support for the subsequent extrusion and dispersing action, a floating support is installed above conveyor belt 1.

[0042] Specifically, the structure of the floating support includes at least guide posts 2 distributed on both sides of the conveyor belt 1 in the width direction. Elastic components for providing flexible force are respectively sleeved on the outside of the guide posts 2 on both sides.

[0043] like Figure 5 As shown, each set of elastic elements includes a first elastic element 301 and a second elastic element 302. The pressure roller assembly is suspended horizontally above the conveyor belt 1, and its two ends are slidably connected to the guide posts 2 on both sides. Thus, the pressure roller assembly can move up and down along the axis of the guide posts 2. Furthermore, the sliding end of the pressure roller assembly is connected between the first elastic element 301 and the second elastic element 302 on the same side, forming a sandwich-type suspended support structure with bidirectional buffering effect. Based on this, the upper elastic element is mainly responsible for applying downward compressive pre-tightening force, while the lower elastic element is mainly responsible for providing upward buffering and lifting force, allowing the pressure roller assembly to be stably suspended at a set initial height in a natural standby state.

[0044] A conveying gap is formed between the bottom surface of the pressure roller assembly and the bearing surface of the conveyor belt 1 to allow bagged materials to pass through. During actual production, when bagged materials of varying thickness are conveyed by the conveyor belt 1 and forced into this conveying gap, if the material is thick or contains hard lumps, it will exert an upward pushing force on the pressure roller assembly. At this time, the pressure roller assembly can overcome the elastic force of the first elastic element 301 and float upwards along the guide post 2; simultaneously, the elastic recovery force accumulated after the first elastic element 301 is compressed will be converted into a continuous and gentle downward pressure to act on the surface of the bag, crushing and dispersing the hard lumps inside the bag through continuous rolling and kneading. After the thick material passes through, the pressure roller assembly falls back under the push of the first elastic element 301, while the second elastic element 302 below acts as a shock absorber, preventing the pressure roller assembly from falling instantly and damaging the conveyor belt 1.

[0045] Furthermore, for the same bagged material, even if the thickness of its front and back or sides is inconsistent, the elastic adaptation of the first elastic element 301 and the second elastic element 302 can enable the bagged material to pass through the conveying gap and be crushed and dispersed by the pressure roller assembly.

[0046] In one specific embodiment, there are four guide posts 2.

[0047] In one specific embodiment, the conveyor belt 1 can be a belt conveyor as in the prior art, and will not be limited in detail here.

[0048] In a preferred embodiment, the pressure roller assembly includes a platform 401, a drive element 402, and a pressure roller 403.

[0049] Specifically, platform 401 spans directly above conveyor belt 1. Platform 401 extends from both ends and is reliably suspended or clamped between the first elastic element 301 and the second elastic element 302 on the same side. Through this structure, platform 401 can not only receive the buffering and pre-tensioning forces from the upper and lower elastic elements, but also distribute these forces evenly throughout the entire assembly.

[0050] Among them, the driving component 402, such as the drive motor and its matching reduction mechanism, is installed on the upper end face of the platform 401; the pressure roller 403 is rotatably connected to the lower end face of the platform 401 and establishes a power transmission connection with the driving component 402 above.

[0051] In actual production and operation, the drive component 402 drives the pressure roller 403 to rotate through the transmission connection, so that the pressure roller 403 breaks up and crushes the hardened blocks inside the bagged material in contact with it.

[0052] In a preferred embodiment, the guide post 2 is provided with an adjusting member 5.

[0053] Specifically, the adjusting element 5 is connected to the guide post 2 and acts directly on the end of the elastic element. Its core configuration aims to allow the operator to manually adjust and set the initial preload of the first elastic element 301 and / or the second elastic element 302, i.e., the initial compression state.

[0054] In actual feed processing or warehousing logistics scenarios, the severity of internal caking and the compressive strength of hard lumps often vary significantly between different batches and storage periods of bagged soybean meal. If the initial elasticity of the elastic components is fixed at the factory, the equipment may not have sufficient downward crushing force when facing extremely hard lumps, and the pressure roller 403 may be easily lifted, resulting in ineffective dispersal. On the other hand, when facing regular soybean meal with only slight adhesion, excessive fixed pressure may produce unnecessary extreme compression, increasing the risk of soybean meal packaging bag rupture.

[0055] By introducing the adjusting component 5, operators can flexibly change the stress state of the elastic element according to the actual physical characteristics of the current batch of bagged soybean meal before starting the machine or during operation. For example, when processing soybean meal with severe caking, operators can further compress the first elastic element 301 located above using the adjusting component 5, significantly increasing its downward preload, and outputting a stronger crushing force when encountering hard lumps; when processing materials with thin packaging bags or materials that only require slight kneading, some of the preload can be released, making the floating of the pressure roller 403 more flexible and sensitive, protecting the packaging bag from damage to the greatest extent.

[0056] Furthermore, since the first elastic element 301 and the second elastic element 302 provide forces in opposite directions, the original force balance can be broken by adjusting the preload of the two elements individually or simultaneously by adjusting the adjustment element 5, thereby achieving fine adjustment of the initial suspension height of the pressure roller 403, i.e. the basic conveying gap.

[0057] Furthermore, the outer peripheral surface of the guide post 2 is typically machined with standard external mechanical threads in the section near the spring mounting end. Correspondingly, the adjusting member 5 is specifically embodied as an adjusting nut with internal threads. In the assembled state, the adjusting nut engages with the external threads on the guide post 2, and the flat end face of the adjusting nut directly abuts against the first elastic member 301, such as the upper helical compression spring, and / or the second elastic member 302, such as the lower end of the buffer spring.

[0058] When the equipment needs to adjust the compression characteristics of the pressure roller 403 according to the thickness or hardness of the bagged material during actual operation, the operator does not need to disassemble any parts or rely on a complex electromechanical control system. They can simply use a wrench or rotate the adjusting nut by hand. As the adjusting nut is screwed onto the guide post 2 in either the forward or reverse direction, it will move linearly forward or backward along the axis of the guide post 2. Since the end face of the adjusting nut always abuts against the end of the elastic element, its linear displacement directly forces the elastic element to further compress or release, thereby changing the actual compression amount of the elastic element and the magnitude of its output preload.

[0059] In a preferred embodiment, the pressure roller 403 has a plurality of raised ribs. The plurality of raised ribs are evenly and spaced apart along the circumferential direction on the outer circumferential surface of the pressure roller 403, and each raised rib extends along the axial direction of the pressure roller 403.

[0060] When the pressure roller 403 rotates above the conveyor belt 1 and crushes bagged materials, such as clumped soybean meal, the presence of the ribs changes the contact between the pressure roller 403 and the surface of the bag from a traditional large-area surface contact to a localized line contact along the top of the ribs. This line contact increases the pressure at the contact point, creating extremely high concentrated stress. This highly concentrated physical stress can easily cut or crush the hard, adhesive structure of the material inside the packaging bag.

[0061] In a preferred embodiment, the platform 401 has four connecting corner portions 4011, which are respectively and symmetrically arranged at the four corners of the platform 401. In the assembly space, the device is correspondingly provided with four guide posts 2, and each connecting corner portion 4011 is independently fitted onto the outside of its corresponding guide post 2. In the vertical height direction, each connecting corner portion 4011 is sandwiched between the first elastic member 301 and the second elastic member 302 on the same side.

[0062] In actual conveying of bagged materials such as soybean meal, the distribution of material within the bag is often extremely uneven, easily resulting in an unbalanced load pattern where the left side is thicker than the right or the front is higher than the back. If the pressure roller 403 only uses a single-point or two-point rigid suspension, when subjected to strong pushing force from one side of the material, the platform 401 is prone to hard twisting, and may even cause uneven force on the guide structure, resulting in deadlock or jamming.

[0063] When the pressure roller 403 passes under an irregularly shaped bag of hard material, the upward pushing force on each of the four corners is different. At this time, since each corner is independently clamped by two elastic elements, the corner with greater force can overcome the pre-tightening force of the first elastic element 301 above it and float upward independently to a greater extent, while the corner with less force floats less or even remains in place. This allows it to conform to any uneven surface of the bag and knead it without dead angles. Moreover, the common limiting of the four guide columns 2 ensures that the platform 401 can quickly and smoothly fall back to the initial horizontal state after tilting and breaking up the bag, completely eliminating the risk of mechanical jamming and greatly extending the service life of the equipment under harsh working conditions.

[0064] More specifically, a guide sleeve 4012 with a certain axial length is provided at each connecting corner 4011 of the platform 401. The guide sleeve 4012 is hollow tubular, coaxially sleeved on the outside of the corresponding guide post 2, and forms a sliding friction pair with the outer peripheral surface of the guide post 2. In the vertical spatial assembly relationship, the lower end of the first elastic member 301 located above directly and flush with the upper end surface of the guide sleeve 4012; similarly, the upper end of the second elastic member 302 located below flush with the lower end surface of the guide sleeve 4012.

[0065] Furthermore, the drive component 402 is specifically configured to include a power source, such as a geared motor, and a drive sprocket fixed to the motor output shaft. Correspondingly, a driven sprocket is coaxially fixed at at least one end of the pressure roller 403. A transmission chain is sleeved and engaged between the drive sprocket and the driven sprocket, and a reliable mechanical power transmission is established between them through the transmission chain.

[0066] In a preferred embodiment, a guide mechanism 6 is also included.

[0067] Specifically, the guiding mechanism 6 is located at the feed end of the conveyor belt 1, that is, on the conveying path between the material placement point and the pressure roller assembly. The guiding mechanism 6 mainly consists of two guide plates, which are fixedly installed on the left and right sides of the bearing surface of the conveyor belt 1, respectively. The two guide plates are arranged in a tapering, funnel-shaped pattern along the material conveying direction, with a larger distance between the inlet ends and a smaller distance between the outlet ends, forming a tapering channel with a central guiding function.

[0068] In actual production operations, whether by manual stacking or automatic unloading from the upstream production line, when bagged soybean meal falls into the initial position of conveyor belt 1, it is often placed at an angle or deviated from the center line of conveyor belt 1. If such deviated bags are allowed to directly enter under the pressure roller 403 behind, it will not only cause the pressure roller assembly to bear a severe unilateral load, resulting in extreme tilting of pressure roller 403 and accelerated wear on one side of guide sleeve 4012, but the edge of the bag is also very likely to directly impact or rub against the guide column 2 and helical spring of the floating support, thereby tearing the packaging bag, causing large-scale material leakage and equipment jamming.

[0069] Therefore, when the bagged material, which has shifted position, moves forward with the conveyor belt 1 and enters the guiding mechanism 6, it will first come into contact with the front end of the widely spaced guide plates. As the conveyor belt 1 continues to move forward, the inclined sidewalls of the guide plates will generate a smooth lateral thrust on the bag, pushing the bag towards the central longitudinal axis of the conveyor belt 1.

[0070] In a preferred embodiment, the floating support further includes a top frame 7 spanning above it. The top frame 7 spans the space above the conveyor belt 1, and its two ends are securely connected to the tops of the guide columns 2 on both sides. Through the mechanical connection of this top frame 7, the entire floating support forms a gantry frame in space.

[0071] During high-intensity continuous dispersing operations, the pressure roller assembly is frequently subjected to strong, irregular upward thrust from thick, clump-like materials. Due to the randomness of the material's shape, this thrust not only includes vertical upward force but also often includes a very strong lateral component. If the top of the guide column 2 is in an unconstrained cantilever beam state, under the impact of long-term alternating lateral bending moments, the guide column 2 is prone to slight bending deformation, either opening outwards or contracting inwards. By adding the top frame 7, the relative distance between the tops of the two guide columns 2 is locked, transforming the force on a single column into the shared force of the entire frame. This significantly improves the bending and torsional rigidity of the entire guiding system.

[0072] 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 variations 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 belt conveyor with floating pressure rollers, characterized in that, include: Conveyor belts are used to carry and transport materials. A floating support is installed across the conveyor belt, and the floating support includes at least guide columns distributed on both sides of the conveyor belt; An elastic element assembly is sleeved on the guide post, and each elastic element assembly includes a first elastic element and a second elastic element; A pressure roller assembly spans across the conveyor belt, with both ends of the pressure roller assembly slidably connected to the guide posts on both sides, and both ends of the pressure roller assembly being connected to the first elastic member and the second elastic member on the same side, respectively. Furthermore, a floating conveying gap is formed between the pressure roller assembly and the conveyor belt; Adjustment element, connected to the guide post; The adjusting component is configured to adjust the preload of the first elastic element and / or the second elastic element; the outer circumferential surface of the guide post is provided with an external thread; the adjusting component is an adjusting nut, which engages with the external thread and abuts against the end of the first elastic element and / or the second elastic element.

2. The belt conveyor with floating pressure rollers according to claim 1, characterized in that, The pressure roller assembly includes: The platform spans across the conveyor belt, and its two ends are respectively connected to the first elastic member and the second elastic member on the same side; A driving component is disposed on the upper surface of the platform; The pressure roller is rotatably connected to the lower end face of the platform and is connected to the drive component for transmission. Furthermore, the conveying gap is formed between the pressure roller and the conveyor belt.

3. The belt conveyor with floating pressure rollers according to claim 2, characterized in that, The pressure roller has multiple ribs, which are spaced apart on the outer circumferential surface of the pressure roller and extend along the axial direction of the pressure roller.

4. The belt conveyor with floating pressure rollers according to claim 3, characterized in that, The platform has four connecting corners, which are respectively located at the four corners of the platform; Each of the connecting corner portions is respectively sleeved on the corresponding guide post and sandwiched between the first elastic member and the second elastic member on the same side.

5. The belt conveyor with floating pressure rollers according to claim 4, characterized in that, The connecting corner is provided with a guide sleeve, which is fitted and slidably connected to the guide post; Furthermore, one end of the first elastic element and one end of the second elastic element respectively abut against the upper and lower end faces of the guide sleeve.

6. The belt conveyor with floating pressure rollers according to claim 2, characterized in that, The driving component includes a motor and a drive sprocket, and the end of the pressure roller is coaxially provided with a driven sprocket; Furthermore, the driving sprocket and the driven sprocket are connected by a transmission chain.

7. The belt conveyor with floating pressure rollers according to claim 1, characterized in that, The feed end of the conveyor belt is provided with a guiding mechanism, which includes two guide plates respectively disposed on both sides of the conveyor belt. The two guide plates are arranged in a gradually narrowing shape along the material conveying direction.

8. The belt conveyor with floating pressure rollers according to claim 1, characterized in that, The floating support also includes a top frame, which is connected to the top of the guide columns distributed on both sides of the conveyor belt.

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