Filtering device for feed additive production

Abstract

The invention provides a filter device for feed additive production, and relates to the technical field of feed additive filtration, the filter device comprises a spring coaxially arranged on an inclined rod, two ends of the spring are respectively provided with an impact disc, each impact disc is provided with a through hole, the two through holes are slidably connected to the inclined rod, and the inclined rod is provided with a through hole. The filtering device comprises a plurality of impact discs, each impact disc is provided with two overlapping sleeves, the interior of each overlapping sleeve is connected to a piston rod in a sliding mode, and the two overlapping sleeves which are coaxially arranged are provided with a two-way pipe in a sliding mode. According to the one-way reciprocating screening device, the stability problem of a traditional one-way reciprocating screening device is solved, the multiple inclined rods are symmetrically installed on the fixing frame, the screen plate systems moving synchronously are arranged on the inclined rods, balanced distribution of screening force is achieved, and when the device works, the screen plates on the two sides are driven by the transmission system to do synchronous reciprocating motion in opposite directions.

Description

Technical Field

[0001] The present invention relates to the technical field of filtration for feed additives, and more specifically, it relates to a filtration device for the production of feed additives. Background Art

[0002] In the modern feed industry production field, the filtration and screening process is a key link in the production of feed additives, directly affecting product quality and production efficiency. However, the currently widely used filtration devices for feed additive production have technical limitations. These devices generally use a unidirectional reciprocating motion mechanism to drive the sieve plate for screening operations, that is, the sieve plate only reciprocates back and forth or left and right in a single plane direction. This single-direction reciprocating motion will generate unbalanced inertial forces and reaction forces during long-term operation, resulting in obvious instability of the entire filtration system. Specifically, the equipment will experience irregular offsets and drifts during the working state, the sieve plate support structure will bear uneven stress distribution, and the equipment fixing components will suffer excessive wear. This instability not only reduces the screening accuracy but also shortens the service life of the equipment and increases the maintenance cost. Especially when dealing with large quantities of compound feed additives with different particle sizes, this instability problem is more prominent, seriously affecting production efficiency and the consistency of product quality.

[0003] A more critical technical defect is that these devices usually use a traditional rocker-link mechanism to drive the sieve plate to move. The characteristic of this mechanism is that there are obvious speed changes during the movement of the sieve plate - when the sieve plate reaches the upper dead point and the lower dead point of the movement stroke, its movement speed drops to zero, and then it accelerates again. This periodic change in speed leads to the discontinuity of the screening force, making the movement state of the material on the sieve plate unstable. Especially at the moment when the speed is close to zero, the screening effect is reduced. In addition, due to the structural characteristics of the rocker mechanism, the screening frequency of such devices is usually relatively fixed. When the raw material particle size is close to the sieve hole diameter or the moisture content of the material changes, the fixed frequency is likely to cause sieve hole blockage or over-screening phenomena, directly affecting the screening efficiency and product quality, and ultimately reducing the bioavailability and nutritional value of feed additives, having an adverse impact on the production efficiency of the aquaculture industry. Summary of the Invention

[0004] (I) Technical Problems to be Solved In view of the problems existing in the prior art, the present invention provides a filtration device for the production of feed additives to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solutions To achieve the above object, the present invention provides the following technical solution: A filtering device for feed additive production, comprising a fixedly arranged fixing frame and a plurality of inclined rods symmetrically installed on the fixing frame; further comprising a vibration mechanism, the vibration mechanism includes a spring coaxially arranged on the inclined rod, and impact plates are respectively installed at both ends of the spring, through holes are opened on the impact plates, the two through holes are slidably connected to the inclined rod, two overlapping sleeves are respectively installed on each impact plate, piston rods are slidably connected in each overlapping sleeve, a two-way pipe is slidably installed on the two overlapping sleeves arranged coaxially, a plurality of inner holes are opened on the side wall of the overlapping sleeve, and a plurality of constant pressure holes and exhaust holes are symmetrically opened on both sides of the two-way pipe respectively; further comprising a driving mechanism, the driving mechanism includes two transmission shafts rotatably connected to the fixing frame, and synchronous wheels are respectively installed on the two transmission shafts, and the two synchronous wheels are meshed with each other.

[0006] Preferably, a fixing plate is installed at the middle position of the spring, the fixing plate is slidably connected to the inclined rod, fixing holes are opened on the inclined rod, and fixing bolts are arranged in the fixing plate and the fixing holes. This design enables the spring to be firmly fixed on the inclined rod through the fixing plate and the fixing bolts, ensuring the stable working position of the spring.

[0007] Preferably, the two-way pipe is fixedly connected to the side wall of the fixing plate, expansion sleeves are respectively installed on both sides of each two-way pipe, and the expansion sleeves and the piston rods are coaxially arranged. This structure enables the two-way pipe to be connected to the fixing plate, and the coaxial design of the expansion sleeves and the piston rods ensures a smooth air flow channel, improving the air pressure transmission efficiency and the system operation stability.

[0008] Preferably, vibration blocks are installed on every two piston rods, the vibration blocks are installed on follower blocks, and guide sleeves are installed on the follower blocks, and the guide sleeves are slidably connected to the inclined rod.

[0009] Preferably, the guide sleeves, the impact plates, the fixing plates and the inclined rods are coaxially and of the same size. This coaxial and same-size design ensures the alignment and good cooperation between the components, reducing the eccentric force and vibration during the movement.

[0010] Preferably, the driving mechanism further includes discharge plates installed on the follower blocks, and sieve plates are respectively installed on each discharge plate. A discharge port is installed on the discharge plate close to one side of the fixing frame, and another discharge port is installed on the sieve plate close to the other side of the fixing frame. This structural design realizes the effective diversion of the screened materials, enabling particles of different sizes to be discharged from different outlets, improving the screening accuracy and efficiency.

[0011] Preferably, rockers are respectively installed on the side walls of the two synchronous pulleys, and the two rockers are symmetrically arranged. This symmetric rocker design ensures the balance of bilateral driving forces, reduces the unbalanced vibration during the operation of the system, and improves the stability and screening uniformity of the overall device.

[0012] Preferably, connecting rods are respectively rotatably installed on the two symmetrically arranged rockers, and the other ends of the connecting rods are rotatably connected to the discharge plate. This connecting rod transmission structure converts the rotational motion of the rocker into the linear reciprocating motion of the discharge plate, realizing a stable and efficient screening operation, and at the same time reducing mechanical wear.

[0013] Preferably, a motor is fixedly arranged on the fixed frame, a belt pulley is installed on the extending end of the motor, a driven pulley is installed on the transmission shaft, and a belt is meshed and installed on the driven pulley and the belt pulley. This power transmission system design smoothly transmits the motor power to the transmission shaft through belt transmission.

[0014] Preferably, the discharge ports on the two discharge plates are both on one side, and the discharge ports on the two sieve plates are on the other side. This staggered discharge port layout design realizes the directional flow and effective separation of materials, avoids the mixing of materials with different particle sizes, and improves the screening quality and the convenience of subsequent processing.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides a filtering device for the production of feed additives, which has the following beneficial effects: The filtering device for the production of feed additives adopts a two-way symmetric vibration structure design, which solves the stability problem existing in the traditional single-direction reciprocating screening device. By symmetrically installing a plurality of inclined rods on the fixed frame and setting a sieve plate system with synchronous movement on the inclined rods, the balanced distribution of the screening force is realized. When the device works, the sieve plates on both sides perform synchronous but opposite-direction reciprocating movements under the drive of the transmission system. While one sieve plate moves outward, the other sieve plate moves inward, forming a dynamic balance state. This symmetric design enables the inertial force and reaction force generated during the operation of the entire system to cancel each other out, significantly reducing the overall vibration and displacement of the equipment. Practical applications show that compared with the traditional single-direction screening device, this design reduces the vibration amplitude of the equipment, improves the stability and durability of the equipment. This high stability not only extends the service life of the equipment, reduces the maintenance cost, but also ensures the continuity and uniformity of the screening process.

[0016] The technical innovation of this device lies in its pneumatic spring composite vibration mechanism, which solves the problem of reduced screening efficiency caused by the zero speed of the traditional rocker mechanism at the top and bottom dead points. This mechanism consists of components such as springs, impact discs, overlapping sleeves, piston rods, two-way pipes, and vibration blocks, forming a set of efficient energy storage and release systems. When the sieve plate moves to the top and bottom dead point positions, the piston rod pushes the gas inside the overlapping sleeve to be compressed, while compressing the spring to store energy. When the inner hole coincides with the exhaust hole, the compressed gas is quickly discharged, and the spring releases the stored elastic potential energy, pushing the impact disc to hit the vibration block at high speed, generating additional impact vibrations. This design adds additional vibration energy at the "dead point" position of the traditional screening device, ensuring the continuity and efficiency of the screening process. More uniquely, the air pressure of this system is affected by temperature changes, making the energy and vibration frequency generated by each impact show a certain randomness, forming a composite vibration mode with multiple frequencies and amplitudes. This variable-frequency vibration effect effectively prevents the "jumping resonance" phenomenon of materials on the sieve mesh, reduces the probability of sieve hole blockage, and improves the screening efficiency.

[0017] This filtering device is designed with a two-way air flow circulation system, ensuring the continuous and efficient operation of the vibration mechanism. When one overlapping sleeve moves towards the two-way pipe to compress the gas, the other overlapping sleeve moves away from the two-way pipe, forming a negative pressure area. When the inner hole is connected to the outside, external air is inhaled to restore the normal pressure state of the system, preparing for the next compression cycle. This automatic air flow circulation design enables the device to maintain a stable vibration output under high-frequency operating conditions without the need for additional air source supply or complex air pressure control systems. The self-balancing characteristics of the system enable it to maintain good screening effects even during long-term continuous operation, making it particularly suitable for the production requirements of large quantities of feed additives. In addition, the design of the air flow circulation system also has a self-cleaning function. The reciprocating flow of air can effectively prevent fine dust from accumulating inside the mechanism, extending the maintenance cycle of the equipment and reducing the downtime during the production process.

[0018] In summary, this innovative design solves the problems existing in traditional screening devices, such as poor stability, low screening efficiency, and limited adaptability, providing an efficient, stable, and precise screening solution for the production of feed additives, with significant economic benefits and broad application prospects. Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the overall structure of a filtering device for feed additive production in the present invention; Figure 2 It is a schematic diagram of the structure of the fixed frame and the motor in the present invention; Figure 3 It is a schematic diagram of the structure of the fixed disc, spring, and follower block in the present invention; Figure 4Schematic diagram of the structure of the two-way pipe and the spring in the present invention; Figure 5 Schematic cross-sectional structure diagram of the two-way pipe and the impact plate in the present invention; Figure 6 Schematic cross-sectional structure diagram of the two-way pipe in the present invention; Figure 7 Schematic diagram of the structure of the follower block in the present invention; Figure 8 Schematic diagram of the structure of the synchronous pulley in the present invention.

[0020] In the figure: 11, fixed frame; 12, inclined rod; 21, spring; 22, impact plate; 23, through hole; 24, overlapping sleeve; 25, piston rod; 26, two-way pipe; 27, inner hole; 28, constant pressure hole; 29, exhaust hole; 31, transmission shaft; 32, synchronous pulley; 33, discharge plate; 34, sieve plate; 35, discharge port; 36, rocker; 37, connecting rod; 38, motor; 39, belt pulley; 210, fixed disk; 211, fixing hole; 212, fixing bolt; 213, expansion sleeve; 214, vibration block; 215, follower block; 216, guide sleeve; 310, driven pulley; 311, belt. Detailed implementation manners

[0021] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0022] It should be pointed out that unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0023] In the present invention, unless otherwise stated, the orientations such as "upper, lower" are usually in the directions shown in the drawings, or in the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left, right" are usually in the left and right shown in the drawings; "inside, outside" refer to the inside and outside relative to the contour of each component itself, but the above orientation terms do not limit the present invention.

[0024] Please refer to Figures 1 to 4, A filtering device for the production of feed additives, including a fixedly arranged fixing frame 11 and a plurality of inclined rods 12 symmetrically installed on the fixing frame 11; it also includes a vibration mechanism. The vibration mechanism includes springs 21 coaxially arranged on the inclined rods 12, and impact plates 22 are respectively installed at both ends of the springs 21. Through holes 23 are formed on the impact plates 22, and the two through holes 23 are slidably connected to the inclined rods 12. Two overlapping sleeves 24 are respectively installed on each impact plate 22, and piston rods 25 are slidably connected in each overlapping sleeve 24. A two-way pipe 26 is slidably installed on the two coaxially arranged overlapping sleeves 24. A plurality of inner holes 27 are formed on the side walls of the overlapping sleeves 24, and a plurality of constant pressure holes 28 and exhaust holes 29 are symmetrically formed on both sides of the two-way pipe 26 respectively. A fixing plate 210 is installed at the middle position of the spring 21, and the fixing plate 210 is slidably connected to the inclined rod 12. Fixing holes 211 are formed on the inclined rods 12, and fixing bolts 212 are arranged in the fixing plate 210 and the fixing holes 211. The two-way pipe 26 is fixedly connected to the side wall of the fixing plate 210. Expansion sleeves 213 are respectively installed on both sides of each two-way pipe 26, and the expansion sleeves 213 and the piston rods 25 are coaxially arranged. The guide sleeves 216, the impact plates 22, the fixing plates 210 and the inclined rods 12 are coaxially and identically sized. Vibration blocks 214 are installed on every two piston rods 25, the vibration blocks 214 are installed on follower blocks 215, and guide sleeves 216 are installed on the follower blocks 215. The guide sleeves 216 are slidably connected to the inclined rods 12.

[0025] Since the feed additive is solid particles, a screening process is required during use. First, the motor 38 drives the rotation of the belt pulley 39, and the power is transmitted to the transmission shaft 31 through the belt 311. Synchronous pulleys 32 are respectively installed on the two transmission shafts 31, and the two synchronous pulleys 32 are meshed with each other. Therefore, the two connecting rods 37 will swing synchronously. At this time, the sieve plates 34 on both sides will swing symmetrically and reciprocally along the inclined rods 12. Since the vibrations at both ends are synchronous, the overall vibration level will be reduced, and the stability of use is improved. The feed additive is placed on the sieve plate 34 for screening through reciprocating movement. Larger particles are discharged through the discharge port 35 on the sieve plate 34, and smaller particles are discharged through the discharge port 35 on the discharge plate 33, thus completing the screening process.

[0026] Since the reciprocating vibration is generated by the rotation of the synchronous pulley 32, but the instantaneous speed at the top dead center and bottom dead center positions is zero, additional vibration needs to be applied to ensure the screening process. When the two sieve plates 34 move away from each other, the follower block 215 on the side close to the rocker 36 moves towards the fixed disk 210. Since the fixed disk 210 is fixed by the fixing bolts 212 and the inclined rod 12, as the follower block 215 approaches, the two piston rods 25 on the vibration block 214 will be pushed into the overlapping sleeve 24. Since the piston rods 25 are sealingly and slidably connected within the overlapping sleeve 24, and the overlapping sleeve 24 is sealingly and slidably connected within the double - tube 26, the inner hole 27 is in a sealed state against the double - tube 26 at this time. Therefore, the state between the overlapping sleeve 24 and the piston rods 25 is sealed. As the piston rods 25 are pushed into the overlapping sleeve 24, the pressure of the internal gas increases, and then it will push the overlapping sleeve 24 to move along with the movement of the piston rods 25. The overlapping sleeve 24 is installed on the impact disk 22. Therefore, when the impact disk 22 moves accordingly, the spring 21 will be continuously compressed. As the piston rods 25 continue to move, when the inner hole 27 overlaps with the exhaust hole 29, the internal gas is discharged. At this time, the internal pressure returns to atmospheric pressure, but the spring 21 is in a compressed state. Therefore, the elastic potential energy of the spring 21 is released to push the impact disk 22 towards the vibration block 214. As the impact disk 22 moves towards the vibration block 214, the vibration block 214 also moves towards the impact disk 22, and then the impact disk 22 impacts the vibration block 214 to generate vibration, and then the sieve plate 34 vibrates accordingly again, improving the screening effect. Since the air pressure is affected by temperature, after continuous use, due to the change in pressure, the elastic potential energy stored in the spring 21 will also be different. Therefore, the impact energy and vibration frequency generated by each impact are not the same, thus improving the screening effect.

[0027] When the overlapping sleeve 24 on one side moves into the double - tube 26, the overlapping sleeve 24 on the other side will move away from the double - tube 26. When it moves to the farthest position, the inner hole 27 communicates with the outside air, so air will be sucked in by the internal negative pressure, making it return to normal pressure, and then it returns to the normal state for the next impact. Therefore, both ends will reciprocally go through the processes of impact and recovery, thus ensuring that additional impact vibrations are performed at the top dead center and bottom dead center respectively, ensuring the screening effect.

[0028] The driving mechanism includes two transmission shafts 31 rotatably connected to the fixed frame 11, and synchronous pulleys 32 are respectively installed on the two transmission shafts 31. The two synchronous pulleys 32 are meshed with each other. The driving mechanism further includes discharge plates 33 installed on the follower block 215, and sieve plates 34 are respectively installed on each discharge plate 33. A discharge port 35 is installed on the discharge plate 33 close to one side of the fixed frame 11, and another discharge port 35 is installed on the sieve plate 34 close to the other side of the fixed frame 11. Rocker arms 36 are respectively installed on the side walls of the two synchronous pulleys 32, and the two rocker arms 36 are symmetrically arranged. Connecting rods 37 are respectively rotatably installed on the two symmetrically arranged rocker arms 36, and the other ends of the connecting rods 37 are rotatably connected to the fixed frame 11 on the discharge plate 33. A motor 38 is fixedly arranged on the fixed frame 11. A belt pulley 39 is installed on the extending end of the motor 38. A driven pulley 310 is installed on the transmission shaft 31. A belt 311 is meshed and installed on the driven pulley 310 and the belt pulley 39. The discharge ports 35 on the two discharge plates 33 are all on one side, and the discharge ports 35 on the two sieve plates 34 are on the other side.

[0029] In all the solutions mentioned above, for the connection between two components, welding, connection with bolts and nuts, connection with bolts or screws, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated one by one here. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filtering device for the production of feed additives, comprising a fixedly arranged fixing frame (11) and a plurality of inclined rods (12) symmetrically installed on the fixing frame (11); characterized in that: It further includes a vibration mechanism. The vibration mechanism includes a spring (21) coaxially arranged on the inclined rod (12), and impact discs (22) are respectively installed at both ends of the spring (21). Through holes (23) are formed in the impact discs (22), and the two through holes (23) are slidably connected to the inclined rod (12). Two overlapping sleeves (24) are respectively installed on each impact disc (22), and a piston rod (25) is slidably connected in each overlapping sleeve (24). A two-way pipe (26) is slidably installed on the two coaxially arranged overlapping sleeves (24). A plurality of inner holes (27) are formed in the side wall of the overlapping sleeve (24), and a plurality of constant pressure holes (28) and exhaust holes (29) are symmetrically formed on both sides of the two-way pipe (26) respectively. It further includes a driving mechanism. The driving mechanism includes two transmission shafts (31) rotatably connected to the fixed frame (11), and synchronous wheels (32) are respectively installed on the two transmission shafts (31), and the two synchronous wheels (32) are meshed with each other.

2. The filtering device for producing a feed additive according to claim 1, wherein: A fixed disc (210) is installed at the middle position of the spring (21), the fixed disc (210) is slidably connected to the inclined rod (12), a fixing hole (211) is formed in the inclined rod (12), and a fixing bolt (212) is arranged in the fixed disc (210) and the fixing hole (211).

3. The filtering device for the production of feed additives according to claim 2, characterized in that: The two-way pipe (26) is fixedly connected to the side wall of the fixed disc (210), and expansion sleeves (213) are respectively installed on both sides of each two-way pipe (26), and the expansion sleeves (213) and the piston rod (25) are coaxially arranged.

4. The filtering device for feed additive production according to claim 3, wherein: A vibration block (214) is installed on every two piston rods (25), the vibration block (214) is installed on a follower block (215), a guide sleeve (216) is installed on the follower block (215), and the guide sleeve (216) is slidably connected to the inclined rod (12).

5. The filtering device for the production of a feed additive according to claim 4, characterized in that: The guide sleeve (216), the impact disc (22), the fixed disc (210) and the inclined rod (12) are coaxially and identically sized.

6. The filtering device for feed additive production according to claim 5, wherein: The driving mechanism further includes a discharge plate (33) installed on the follower block (215), and a sieve plate (34) is respectively installed on each discharge plate (33). A discharge port (35) is installed on the discharge plate (33) close to one side of the fixed frame (11), and another discharge port (35) is installed on the sieve plate (34) close to the other side of the fixed frame (11).

7. The filtering device for feed additive production according to claim 6, characterized in that: Rocking rods (36) are respectively installed on the side walls of the two synchronous wheels (32), and the two rocking rods (36) are symmetrically arranged respectively.

8. The filtering device for producing a feed additive according to claim 7, characterized in that: Connecting rods (37) are respectively rotatably installed on the two symmetrically arranged rocking rods (36), and the other ends of the connecting rods (37) are rotatably connected to the discharge plate (33).

9. The filtering device for feed additive production according to claim 1, characterized in that: A motor (38) is fixedly arranged on the fixing frame (11), a belt pulley (39) is installed on the extending end of the motor (38), a driven pulley (310) is installed on the transmission shaft (31), and a belt (311) is meshingly installed on the driven pulley (310) and the belt pulley (39).

10. A filtering device for the production of a feed additive according to claim 6, characterized in that: The discharge ports (35) on the two discharge plates (33) are both on one side, and the discharge ports (35) on the two sieve plates (34) are on the other side.

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