Blanking device

Abstract

The invention relates to the technical field of sealing shafts, and particularly discloses a blanking device which comprises a middle bearing connecting shaft, the middle of the outer side of the middle bearing connecting shaft is sleeved with a connecting bearing, the connecting bearing is fixed to the middle bearing connecting shaft through a fixing outer ring, and centrifugal solid balls in a pressurizing structure are subjected to centrifugal force through rotation of the middle bearing connecting shaft; therefore, the centrifugal solid ball moves away from the middle bearing connecting shaft, the included angle between the pressure guide rod and the ball connecting rod is enlarged, the pressure guide rod can provide pressure for the connecting stand column, the connecting stand column can enable the pressurizing arc plate to tightly press the shaft end sealing ring, and when the middle bearing connecting shaft rotates, the pressure guide rod and the ball connecting rod can rotate. The shaft end sealing ring can be more tightly attached to the outer side of the middle bearing connecting shaft, dust and impurities are effectively prevented from entering the shaft end sealing ring, the sealing performance of the shaft end sealing ring is improved, the service life of the shaft end sealing ring is prolonged, the maintenance and replacement frequency is reduced, the discharging efficiency is improved, and the phenomena of material leakage and dust emission are reduced.

Description

Technical Field

[0001] This application relates to the field of sealing shaft technology, and more particularly to a feeder. Background Technology

[0002] An impeller feeder is a device that uses the rotation of an impeller to quantitatively and continuously convey powdery or granular materials. It is equivalent to a "flow control valve" in a material conveying system and is widely used in industrial scenarios that require precise control of material output, such as the unloading process of a mineral powder silo. The impeller feeder mainly consists of a body, a main shaft, an impeller, and a geared motor. The geared motor drives the main shaft and impeller to rotate, thus transporting the materials.

[0003] However, the existing technology still has the following problems: the two ends of the impeller shaft are sealed with rubber sealing rings. After continuous feeding for a long time, fine dust and impurities will enter the interior of the sealing shaft through the gaps in the rubber sealing rings. After friction, the rubber sealing rings and the internal sealing structure will be damaged, and material leakage and dust emission will occur. Therefore, the machine needs to be stopped frequently for maintenance, which greatly reduces the working efficiency. Summary of the Invention

[0004] This application provides a feeder that solves the problem in the prior art where fine dust and impurities can enter the sealed shaft through the gaps in the rubber sealing ring, causing damage to the rubber sealing ring and internal sealing structure due to friction, and resulting in material leakage and dust emission. It effectively prevents dust and impurities from entering, improves the sealing performance and service life of the shaft end sealing ring, reduces the number of maintenance and replacement cycles, improves feeding efficiency, and reduces material leakage and dust emission.

[0005] This application provides a feeder, including: a central bearing connecting shaft, wherein a connecting bearing is sleeved on the outer middle of the central bearing connecting shaft, and the connecting bearing is fixed to the central bearing connecting shaft by a fixed outer ring; A pressurizing structure is provided, wherein multiple pressurizing structures are evenly distributed circumferentially on the outer side of the intermediate bearing connecting shaft and are provided at both ends of the connecting bearing. The pressurizing structure is adapted to make the shaft end sealing ring tightly fit the intermediate bearing connecting shaft through the centrifugal force generated by the rotation of the intermediate bearing connecting shaft, thereby reducing the gap between the shaft end sealing ring and the intermediate bearing connecting shaft. The pressurization structure includes a centrifugal solid ball, a pressure guiding rod, a connecting column, and a return ball assembly. A ball connecting rod is fixedly installed on the outer side of the centrifugal solid ball. Rod end seats are fixedly installed at both ends of the pressure guiding rod. The pressure guiding rod is initially inclined. The rod end seats are rotatably installed at one end of the ball connecting rod and the top of the connecting column, respectively. A pressurization arc plate is fixedly installed at the bottom end of the connecting column. The pressurization arc plate is fixedly installed on the outer side of the shaft end sealing ring. The shaft end sealing ring is sleeved on the outer side of the intermediate bearing connecting shaft. After the centrifugal solid ball moves by centrifugal force, it is suitable to return to its original position through the return ball assembly.

[0006] Furthermore, the ball return assembly includes a return spring, with a sliding block and a fixed plate fixedly installed at both ends of the return spring, an adaptive telescopic rod fixedly installed on one side of the sliding block, and an external connecting seat fixedly installed at the other end of the adaptive telescopic rod. The external connecting seat is fixedly installed on the outside of the ball connecting rod, a stabilizing slide rod is fixedly installed on one side of the connecting seat, a guide rail is slidably installed on the same side of the stabilizing slide rod and the sliding block, and a fixed rail bracket is fixedly installed on the other side of the guide rail.

[0007] Furthermore, the initial state of the adaptable telescopic rod and the return spring is the original length, the guide rail has a first groove and a second groove on one side, the initial position of the sliding block is located at the lowest point of the first groove, and the initial position of the stabilizing rod is located at the highest point of the second groove.

[0008] Furthermore, the outer side of the intermediate bearing connecting shaft is provided with multiple drive slots, which are evenly distributed circumferentially on the outer side of the intermediate bearing connecting shaft. The number of drive slots is the same as that of the pressurizing structure. The inner side of the drive slots is used to embed the slot plate provided at the bottom of the rail bracket. The other side of the rail bracket is detachably provided with a stabilizing slide rod, and the same side of the rail bracket is detachably provided with a fixed connecting ring plate, which is sleeved on the outer side of the intermediate bearing connecting shaft.

[0009] Furthermore, one end of the intermediate bearing connecting shaft is provided with a drive end shaft for connecting the motor, and the other end of the intermediate bearing connecting shaft is provided with an impeller end shaft for connecting the impeller. An oil immersion groove is provided on the outer side of the impeller end shaft, and the diameters of the drive end shaft and the impeller end shaft are both smaller than those of the intermediate bearing connecting shaft.

[0010] Furthermore, a liquid seal housing is provided on the outer side of the impeller end shaft, an inner partition is fixedly provided inside the liquid seal housing, an oil injection valve for oil injection is provided on the outer side of the liquid seal housing, a shell end cover is fixedly provided on one end of the liquid seal housing and the end face of the inner partition, the shell end cover is sleeved on the outer side of the impeller end shaft, an oil-immersed sealing ring is fixedly provided on the inner side of the shell end cover, the oil-immersed sealing ring is embedded in the inner side of the oil immersion tank, and a pressure ring bend and an inner ring bend are provided on the inner side of the oil-immersed sealing ring.

[0011] Furthermore, a protective shell is provided on the outside of the pressurization structure, and a liquid seal shell and a motor housing are respectively provided at both ends of the protective shell. The motor housing is fixedly connected to the motor housing, and the liquid seal shell is fixedly connected to the impeller feeder housing.

[0012] Furthermore, both the liquid-sealed outer shell and the protective outer shell are provided with a retaining ring step at their closest ends, and a connecting sealing ring is fitted on the outer side of the retaining ring step, so that the liquid-sealed outer shell and the protective outer shell are detachably connected.

[0013] The technical solution provided in this application has at least the following technical effects or advantages: 1. This application utilizes the rotation of the intermediate bearing connecting shaft to subject the centrifugal solid ball in the pressurizing structure to centrifugal force, causing the centrifugal solid ball to move away from the intermediate bearing connecting shaft. This increases the angle between the pressure guide rod and the ball connecting rod, allowing the pressure guide rod to provide pressure to the connecting column. The connecting column then causes the pressurizing arc plate to press against the shaft end sealing ring. Consequently, when the intermediate bearing connecting shaft rotates, the shaft end sealing ring can fit more tightly against the outside of the intermediate bearing connecting shaft, effectively preventing dust and impurities from entering, improving the sealing performance and service life of the shaft end sealing ring, reducing maintenance and replacement frequency, increasing material feeding efficiency, and reducing material leakage and dust emission.

[0014] 2. This application injects lubricating oil into the interior of the liquid seal housing through an oil injection valve. The oil pressure of the lubricating oil presses against the pressure ring bend of the oil-immersed sealing ring, allowing the pressure ring bend to deform and bend outward. The inner bend of the ring allows the lubricating oil to fully contact the pressure ring bend, thereby sealing the gap between the housing end cover and the impeller end shaft, realizing a dynamic adaptive sealing function, further preventing the entry of dust and impurities, reducing dry friction between the oil-immersed sealing ring and the impeller end shaft, and improving the service life of the oil-immersed sealing ring. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of an embodiment of this application.

[0016] Figure 2 This is a cross-sectional structural diagram of an embodiment of this application.

[0017] Figure 3 for Figure 2 A magnified structural diagram of point A in the middle.

[0018] Figure 4 This is a cross-sectional structural diagram of the liquid-sealed shell in the embodiment of this application.

[0019] Figure 5 This is a schematic diagram of the internal structure of the protective shell in the embodiment of this application.

[0020] Figure 6 This is a schematic diagram of the combined structure of the bearing connecting shaft and the pressurizing structure in the embodiment of this application.

[0021] Figure 7 This is a schematic diagram of the disassembled structure connecting the column, sliding block, and guide rail in the embodiment of this application. Figure 8 This is a schematic diagram showing the separation of the liquid-sealed outer shell and the protective outer shell in the embodiment of this application.

[0022] In the diagram: 1. Connecting shaft; 101. Drive end shaft; 1011. Drive slot; 102. Impeller end shaft; 1021. Oil immersion tank; 2. Liquid seal housing; 201. Housing end cover; 2011. Oil injection valve; 2012. Inner partition; 202. Oil-immersed sealing ring; 203. Pressure ring bend; 204. Inner bend of the ring; 205. Snap ring step; 206. Connecting sealing ring; 3. Protective housing; 301. Motor housing; 4. Connecting bearing; 401. Fixed outer ring; 5. Pressure boosting structure; 50 1. Centrifugal solid ball; 502. Ball connecting rod; 503. Pressure guide rod; 504. Rod end seat; 505. Connecting column; 506. Stabilizing slide rod; 507. Pressure boosting arc plate; 508. Shaft end sealing ring; 509. Rod external connecting seat; 510. Adaptive telescopic rod; 511. Sliding block; 512. Return spring; 513. Fixed connecting plate; 514. Guide slide rail; 5141. First slide groove; 5142. Second slide groove; 515. Fixed rail bracket; 5151. Inner groove clamping plate; 516. Fixed connecting ring plate. Detailed Implementation

[0023] This application discloses a feeder in which the rotation of the intermediate bearing connecting shaft 1 causes the centrifugal solid ball 501 in the pressure boosting structure 5 to be subjected to centrifugal force, thereby causing the centrifugal solid ball 501 to move away from the intermediate bearing connecting shaft 1. This reduces the angle between the pressure guide rod 503 and the ball connecting rod 502, allowing the pressure guide rod 503 to provide pressure to the connecting column 505. The connecting column 505 then causes the pressure boosting arc plate 507 to press against the shaft end sealing ring 508. As the intermediate bearing connecting shaft 1 rotates, the shaft end sealing ring 508 can fit more tightly against the outside of the intermediate bearing connecting shaft 1, effectively preventing dust and impurities from entering, improving the sealing performance and service life of the shaft end sealing ring 508, reducing the number of maintenance and replacement cycles, improving feeding efficiency, and reducing material leakage and dust emission.

[0024] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods. Example 1

[0025] Reference Figure 1 , Figure 2 , Figure 5 and Figure 6This application discloses a feeder including a pressure boosting structure 5. Multiple pressure boosting structures 5 are evenly distributed circumferentially on the outer side of the connecting shaft 1 and located at both ends of the connecting bearing 4. The pressure boosting structures 5 are adapted to use the centrifugal force generated by the rotation of the connecting shaft 1 to make the shaft end sealing ring 508 tightly fit against the connecting shaft 1, thereby reducing the gap between the shaft end sealing ring 508 and the connecting shaft 1. The pressure boosting structure 5 includes a centrifugal solid ball 501, a pressure guide rod 503, a connecting column 505, and a ball return assembly. The outer side of the centrifugal solid ball 501... A ball connecting rod 502 is fixedly installed on the side, and rod end seats 504 are fixedly installed at both ends of the pressure guide rod 503. The initial state of the pressure guide rod 503 is inclined. The rod end seats 504 are rotatably installed at one end of the ball connecting rod 502 and the top of the connecting column 505, respectively. A pressure boosting arc plate 507 is fixedly installed at the bottom end of the connecting column 505. The pressure boosting arc plate 507 is fixedly installed on the outside of the shaft end sealing ring 508. The shaft end sealing ring 508 is sleeved on the outside of the middle bearing connecting shaft 1. After the centrifugal solid ball 501 moves by centrifugal force, it is suitable to return to its original position through the ball return assembly.

[0026] When the impeller feeder is working, the intermediate bearing connecting shaft 1 drives the pressurizing structure 5 to rotate, thereby giving the centrifugal solid ball 501 centrifugal force generated by the rotation. This causes the centrifugal solid ball 501 to move away from the intermediate bearing connecting shaft 1. Simultaneously, the ball connecting rod 502 drives the pressure guide rod 503 to move, and the angle between the pressure guide rod 503 and the ball connecting rod 502 gradually increases. Due to the arrangement of the first slide groove 5141 and the second slide groove 5142, when the centrifugal solid ball 501 is subjected to centrifugal force, the sliding block 511 in the ball return assembly can only follow the centrifugal solid ball 501 as it moves away from the intermediate bearing connecting shaft 1. As the angle between the ball connecting rod 502 and the guide rod 503 increases, the stabilizing slide rod 506 moves closer to the intermediate bearing connecting shaft 1 on the inner side of the second slide groove 5142. This causes the connecting column 505 to receive pressure, which in turn causes the pressure-boosting arc plate 507 to apply pressure to the shaft end sealing ring 508. Multiple pressure-boosting arc plates 507 can press the shaft end sealing ring 508 from multiple positions, further improving the sealing degree between the shaft end sealing ring 508 and the intermediate bearing connecting shaft 1, improving the sealing performance, and preventing dust and impurities from entering the space between the connecting bearing 4 and the intermediate bearing connecting shaft 1.

[0027] Specifically, the ball return assembly includes a return spring 512. A sliding block 511 and a fixed plate 513 are fixedly installed at both ends of the return spring 512. An adaptive telescopic rod 510 is fixedly installed on one side of the sliding block 511. An external rod connecting seat 509 is fixedly installed at the other end of the adaptive telescopic rod 510. The external rod connecting seat 509 is fixedly installed on the outside of the ball connecting rod 502. A stabilizing slide rod 506 is fixedly installed on one side of the rod connecting end seat 504. A guide rail 514 is slidably installed on the same side of the stabilizing slide rod 506 and the sliding block 511. A fixed rail bracket 515 is fixedly installed on the other side of the guide rail 514.

[0028] When the connecting shaft 1 stops rotating, the return spring 512 in the ball return assembly pulls the sliding block 511 back to its original position, and the angle between the guide rod 503 and the ball connecting rod 502 gradually returns to its initial state. As a result, the stabilizing slide rod 506 also returns to its original height, and the pressure boosting arc plate 507 no longer applies pressure to the shaft end sealing ring 508, allowing the pressure boosting structure 5 to perform the next operation.

[0029] Among them, see Figure 6 and Figure 7 The initial state of the telescopic rod 510 and the return spring 512 is the original length. The guide rail 514 has a first groove 5141 and a second groove 5142 on one side. The initial position of the sliding block 511 is located at the lowest point of the first groove 5141, and the initial position of the stabilizing rod 506 is located at the highest point of the second groove 5142.

[0030] This allows the centrifugal force to be transferred to the pressurizing arc plate 507 after the centrifugal solid ball 501 is subjected to centrifugal force.

[0031] See Figure 6 Multiple drive slots 1011 are provided on the outer side of the intermediate bearing connecting shaft 1. The drive slots 1011 are evenly distributed in a circle on the outer side of the intermediate bearing connecting shaft 1. The number of drive slots 1011 is the same as that of the pressurizing structure 5. The inner side of the drive slots 1011 is used to embed the slot plate 5151 provided at the bottom of the rail bracket 515. A detachable stabilizing slide rod 506 is provided on the other side of the rail bracket 515. A fixed connecting ring plate 516 is detachably provided on the same side of the rail bracket 515. The fixed connecting ring plate 516 is sleeved on the outer side of the intermediate bearing connecting shaft 1.

[0032] The drive slot 1011 is designed to facilitate the installation of the rail bracket 515, allowing the slot plate 5151 to enter and lock into the drive slot 1011. This allows the booster structure 5 to rotate as a whole when the bearing connecting shaft 1 rotates. The fixed connection ring plate 516 is designed to prevent the multiple booster structures 5 from separating. The fixed connection ring plate 516 can be installed by hammering it to make it fit on the outside of the bearing connecting shaft 1, or by using a high-temperature method to fix the fixed connection ring plate 516 on the outside of the bearing connecting shaft 1.

[0033] See Figure 2 , Figure 5 and Figure 8One end of the intermediate bearing connecting shaft 1 is provided with a drive end shaft 101 for connecting the motor, and the other end of the intermediate bearing connecting shaft 1 is provided with an impeller end shaft 102 for connecting the impeller. An oil immersion tank 1021 is provided on the outside of the impeller end shaft 102. The diameters of the drive end shaft 101 and the impeller end shaft 102 are both smaller than those of the intermediate bearing connecting shaft 1. A protective shell 3 is provided on the outside of the pressurizing structure 5. A liquid seal shell 2 and a motor housing 301 are respectively provided at both ends of the protective shell 3. The motor housing 301 is fixedly connected to the motor shell.

[0034] When the motor is running, it will drive the drive end shaft 101 to rotate, which in turn will drive the intermediate bearing connecting shaft 1 and the impeller end shaft 102 to rotate, thereby allowing the impeller in the impeller feeder to rotate. The diameters of the drive end shaft 101 and the impeller end shaft 102 are both smaller than the intermediate bearing connecting shaft 1, which facilitates the installation of the connecting bearing 4 and the pressure boosting structure 5.

[0035] The protective housing 3 and the motor housing 301 can be automatically installed and fixed in the form of upper and lower housings. The motor housing 301 is installed on the motor housing. The protective housing 3 can be fixedly connected to the impeller feeder housing through the liquid seal housing 2, which facilitates the protection of the internal parts of the liquid seal housing 2 and the protective housing 3. Example 2

[0036] Reference Figure 2 , Figure 3 and Figure 4 A liquid seal housing 2 is provided on the outer side of the impeller end shaft 102. An inner partition 2012 is fixedly provided inside the liquid seal housing 2. An oil injection valve 2011 for oil injection is provided on the outer side of the liquid seal housing 2. A shell end cover 201 is fixedly provided on one end of the liquid seal housing 2 and the end face of the inner partition 2012. The shell end cover 201 is sleeved on the outer side of the impeller end shaft 102. An oil-immersed sealing ring 202 is fixedly provided on the inner side of the shell end cover 201. The oil-immersed sealing ring 202 is embedded in the inner side of the oil immersion tank 1021. A pressure ring bend 203 and an inner ring bend 204 are provided on the inner side of the oil-immersed sealing ring 202.

[0037] Before the impeller end shaft 102 rotates, that is, before the material feeding operation begins, lubricating oil is injected into the interior of the liquid seal housing 2 through the oil injection valve 2011. The lubricating oil enters the oil immersion tank 1021 and presses against the pressure ring bend 203, causing the inner bend 204 of the ring to abut against the edge of the oil immersion tank 1021. The inner bend 204 of the ring increases the contact area between the lubricating oil and the pressure ring bend 203, so that after the pressure ring bend 203 is fully closed, the inner bend 204 of the ring can completely abut against it, improving the sealing performance when the housing end cover 201 is connected to the impeller end shaft 102. The lubricating oil can also reduce the temperature of the impeller end shaft 102 and the pressure ring bend 203 during friction, and realize the dynamic adaptive sealing function. It can also further prevent dust and impurities in the impeller feeder from entering, and improve the service life of the pressure ring bend 203.

[0038] See Figure 4 and Figure 8 The liquid seal housing 2 is fixedly connected to the impeller feeder housing. Both the liquid seal housing 2 and the protective housing 3 have a retaining ring step 205 at their closest ends. A connecting sealing ring 206 is sleeved on the outside of the retaining ring step 205. The liquid seal housing 2 and the protective housing 3 are detachably connected.

[0039] A connecting sealing ring 206 is provided at the connection between the liquid seal housing 2 and the protective housing 3. The connecting sealing ring 206 is sleeved on the outside of the retaining ring step 205, thereby enhancing the sealing performance of the connection between the liquid seal housing 2 and the protective housing 3 and preventing external dust and impurities from entering the protective housing 3.

[0040] Working principle: When the impeller feeder is working, the external motor drives the drive end shaft 101 to rotate, thereby causing the intermediate bearing connecting shaft 1, the impeller end shaft 102, and the pressure boosting structure 5 to rotate together. During the rotation of the pressure boosting structure 5, the centrifugal solid ball 501 receives centrifugal force, causing it to move away from the intermediate bearing connecting shaft 1. Simultaneously, the ball connecting rod 502 drives the pressure guide rod 503 to move, and the angle between the pressure guide rod 503 and the ball connecting rod 502 gradually increases. Due to the arrangement of the first and second sliding grooves 5141 and 5142, when the centrifugal solid ball 501 is subjected to centrifugal force, the sliding block 511 in the ball return assembly can only follow the centrifugal solid ball 501 in moving away from the intermediate bearing connecting shaft 1. As the angle between the ball connecting rod 502 and the pressure guide rod 503 increases... As the sliding rod 506 enlarges, it moves closer to the connecting shaft 1 on the inner side of the second sliding groove 5142, thereby giving the connecting column 505 pressure. This pressure causes the pressure-boosting arc plate 507 to apply pressure to the shaft end sealing ring 508. Multiple pressure-boosting arc plates 507 can press the shaft end sealing ring 508 from multiple positions, further improving the sealing degree between the shaft end sealing ring 508 and the connecting shaft 1, improving sealing performance, preventing dust and impurities from entering the space between the connecting bearing 4 and the connecting shaft 1, and also preventing dust and impurities from entering the space between the shaft end sealing ring 508 and the connecting shaft 1. This improves the sealing performance and service life of the shaft end sealing ring 508, reduces the number of maintenance and replacement cycles, and improves material feeding efficiency. This allows the centrifugal force to be converted into pressure applied to the shaft end sealing ring 508. It should be noted that when the centrifugal solid ball 501 moves away from the central bearing connecting shaft 1, the adaptive telescopic rod 510 will extend to accommodate the angle change between the ball connecting rod 502 and the guide rod 503. When the connecting shaft 1 stops rotating, the return spring 512 in the ball return assembly causes the sliding block 511 to return to its original position, and the angle between the guide rod 503 and the ball connecting rod 502 will gradually return to its initial state, so that the stabilizing slide rod 506 will also return to its original height, and the pressure boosting arc plate 507 will no longer apply pressure to the shaft end sealing ring 508. The protective housing 3 and the motor housing 301 can be automatically installed and fixed in the form of upper and lower housings. The motor housing 301 is installed on the motor housing. The protective housing 3 can be fixedly connected to the impeller feeder housing through the liquid seal housing 2. A connecting sealing ring 206 is provided at the connection between the liquid seal housing 2 and the protective housing 3. The connecting sealing ring 206 is sleeved on the outside of the retaining ring step 205, thereby enhancing the sealing performance of the connection between the liquid seal housing 2 and the protective housing 3 and preventing external dust and impurities from entering the protective housing 3. Before the impeller feeder starts working, lubricating oil is injected into the interior of the liquid seal housing 2 through the oil injection valve 2011. The lubricating oil enters the oil immersion tank 1021 and presses against the pressure ring bend 203, so that the inner bend 204 of the ring abuts against the edge of the oil immersion tank 1021. The inner bend 204 of the ring increases the contact area between the lubricating oil and the pressure ring bend 203, so that when the pressure ring bend 203 is fully closed, the inner bend 204 of the ring can completely abut against it, improving the sealing performance when the housing end cover 201 is connected to the impeller end shaft 102. The lubricating oil can also reduce the temperature when the impeller end shaft 102 rubs against the pressure ring bend 203, and realize the dynamic adaptive sealing function. It can also further prevent dust and impurities in the impeller feeder from entering, and improve the service life of the pressure ring bend 203.

[0041] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

[0042] The above description is merely a preferred embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present application, based on the technical solution and concept of the present application, should be covered within the scope of protection of the present application.

Claims

1. A feeder, characterized in that: include: A connecting shaft (1) is provided with a connecting bearing (4) on the outer middle of the connecting shaft (1). The connecting bearing (4) is fixed to the connecting shaft (1) by a fixed outer ring (401). A pressure boosting structure (5) is provided in multiple ways. The pressure boosting structures (5) are evenly distributed on the outside of the intermediate bearing connecting shaft (1) and are provided at both ends of the connecting bearing (4). The pressure boosting structure (5) is adapted to make the shaft end sealing ring (508) tightly fit the intermediate bearing connecting shaft (1) by the centrifugal force generated by the rotation of the intermediate bearing connecting shaft (1), so as to reduce the gap between the shaft end sealing ring (508) and the intermediate bearing connecting shaft (1). The pressurization structure (5) includes a centrifugal solid ball (501), a pressure guide rod (503), a connecting column (505), and a ball return assembly. A ball connecting rod (502) is fixedly installed on the outer side of the centrifugal solid ball (501). Rod end seats (504) are fixedly installed at both ends of the pressure guide rod (503). The initial state of the pressure guide rod (503) is inclined. The rod end seats (504) are rotatably installed at one end of the ball connecting rod (502) and the top end of the connecting column (505). A pressurization arc plate (507) is fixedly installed at the bottom end of the connecting column (505). The pressurization arc plate (507) is fixedly installed on the outer side of the shaft end sealing ring (508). The shaft end sealing ring (508) is sleeved on the outer side of the middle bearing connecting shaft (1). After the centrifugal solid ball (501) moves by centrifugal force, it is suitable to return to its original position through the ball return assembly.

2. The feeder as described in claim 1, characterized in that, The ball return assembly includes a return spring (512), with a sliding block (511) and a fixed plate (513) fixedly installed at both ends of the return spring (512). An adaptive telescopic rod (510) is fixedly installed on one side of the sliding block (511), and an external rod connecting seat (509) is fixedly installed at the other end of the adaptive telescopic rod (510). The external rod connecting seat (509) is fixedly installed on the outside of the ball connecting rod (502). A stabilizing slide rod (506) is fixedly installed on one side of the rod connecting end seat (504). A guide rail (514) is slidably installed on the same side of the stabilizing slide rod (506) and the sliding block (511). A rail fixing bracket (515) is fixedly installed on the other side of the guide rail (514).

3. A feeder as described in claim 2, characterized in that, The initial state of the adaptive telescopic rod (510) and the return spring (512) is the original length. The guide rail (514) has a first groove (5141) and a second groove (5142) on one side. The initial position of the sliding block (511) is located at the lowest point of the first groove (5141), and the initial position of the stabilizing rod (506) is located at the highest point of the second groove (5142).

4. A feeder as described in claim 1, characterized in that, Multiple drive slots (1011) are provided on the outer side of the intermediate bearing connecting shaft (1). The drive slots (1011) are evenly distributed on the outer side of the intermediate bearing connecting shaft (1) in a circular pattern. The number of drive slots (1011) is the same as that of the pressurizing structure (5). The inner side of the drive slots (1011) is used to embed the slot plate (5151) provided at the bottom of the rail bracket (515). A detachable stabilizing slide rod (506) is provided on the other side of the rail bracket (515). A detachable connecting ring plate (516) is provided on the same side of the rail bracket (515). The connecting ring plate (516) is sleeved on the outer side of the intermediate bearing connecting shaft (1).

5. A feeder as described in claim 1, characterized in that, One end of the intermediate bearing connecting shaft (1) is provided with a drive end shaft (101) for connecting the motor, and the other end of the intermediate bearing connecting shaft (1) is provided with an impeller end shaft (102) for connecting the impeller. An oil immersion tank (1021) is provided on the outside of the impeller end shaft (102). The diameters of the drive end shaft (101) and the impeller end shaft (102) are both smaller than those of the intermediate bearing connecting shaft (1).

6. A feeder as described in claim 5, characterized in that, A liquid seal housing (2) is provided on the outside of the impeller end shaft (102). An inner partition plate (2012) is fixedly provided inside the liquid seal housing (2). An oil injection valve (2011) for oil injection is provided on the outside of the liquid seal housing (2). A shell end cover (201) is fixedly provided on one end of the liquid seal housing (2) and the end face of the inner partition plate (2012). The shell end cover (201) is sleeved on the outside of the impeller end shaft (102). An oil-immersed sealing ring (202) is fixedly provided on the inside of the shell end cover (201). The oil-immersed sealing ring (202) is embedded in the inside of the oil immersion tank (1021). A pressure ring bend (203) and an inner ring bend (204) are provided on the inside of the oil-immersed sealing ring (202).

7. A feeder as described in claim 1, characterized in that, The outer side of the pressurization structure (5) is provided with a protective shell (3). The two ends of the protective shell (3) are respectively provided with a liquid seal shell (2) and a motor housing (301). The motor housing (301) is fixedly connected to the motor housing, and the liquid seal shell (2) is fixedly connected to the impeller feeder housing.

8. A feeder as described in claim 7, characterized in that, Both the liquid-sealed housing (2) and the protective housing (3) are provided with a retaining ring step (205) at one end. A connecting sealing ring (206) is sleeved on the outside of the retaining ring step (205). The liquid-sealed housing (2) and the protective housing (3) are detachably connected.

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