Sealing mechanism for rotary feeder

Abstract

The utility model discloses a sealing mechanism for a rotary feeder, which relates to the technical field of feeders and comprises a shaft sleeve. The outer side of the rotating shaft is in sliding connection with the inner side of the shaft sleeve; the inner side of the packing sealing device is in sliding connection with the outer side of the shaft sleeve, and the packing sealing device is used for sealing a rotating part; the outer side of the pressing device is in sliding connection with the inner side of the packing sealing device, and the pressing device is used for pressing the packing sealing device; and the outer side of the fixing bolt is in threaded connection with the edge of the pressing device, and the fixing bolt is used for fixing the pressing device. The packing sealing device is arranged, so that powdery materials are prevented from entering a rotating part of equipment, plasticizers, metamorphic materials and the like are greatly prevented from being mixed into finished products, the equipment failure rate is reduced, material leakage is avoided, the service life of the equipment is prolonged, and stable product quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of feeders, and particularly relates to a sealing mechanism for a rotary feeder. Background Art

[0002] A rotary feeder is a mechanical device for continuous conveying and uniform feeding. It mainly consists of a rotary cylinder, a feed inlet, a discharge outlet, a speed reducer, etc., and can be widely used in industries such as construction, metallurgy, chemical industry, and electric power. The rotary feeder can achieve continuous feeding, avoiding the situation where traditional feeding equipment needs to stop and start frequently.

[0003] In the prior art, when dealing with powdery materials, the powdery materials are likely to enter the inside of the sealing device, resulting in high equipment failure rate and difficult operation, further causing problems such as reduced product quality, grinding materials, and overload damage of the motor, reducing the service life of the equipment. To solve the above problems, we propose a sealing mechanism for a rotary feeder. Summary of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the technical solution adopted by the utility model to solve its technical problems is: a sealing mechanism for a rotary feeder, including a shaft sleeve; a rotating shaft, the outer side of the rotating shaft is slidably connected to the inner side of the shaft sleeve; a packing sealing device, the inner side of the packing sealing device is slidably connected to the outer side of the shaft sleeve, and the packing sealing device is used to seal the rotating part; a pressing device, the outer side of the pressing device is slidably connected to the inner side of the packing sealing device, and the pressing device is used to press the packing sealing device; fixing bolts, the outer side of the fixing bolts is threadedly connected to the edge of the pressing device, and the fixing bolts are used to fix the pressing device. By setting the packing sealing device, powdery materials are prevented from entering the rotating part of the equipment, greatly reducing the mixing of "plasticized materials", deteriorated materials, etc. into the finished product, reducing the equipment failure rate, avoiding material leakage, extending the equipment service life, and ensuring stable product quality.

[0005] Preferably, the packing sealing device includes a packing sealing cavity, the inner side of the packing sealing cavity is slidably connected to the outer side of the shaft sleeve, the edge of the packing sealing cavity is threadedly connected to the outer side of the fixing bolts, an I-shaped gas sealing ring is fixedly connected to the inner side of the packing sealing cavity, a packing is slidably connected to the outer side of the I-shaped gas sealing ring, the inner side of the packing is slidably connected to the outer side of the shaft sleeve, and the outer side of the packing is slidably connected to the inner side of the packing sealing cavity. The rotating part of the equipment is sealed by the packing and the I-shaped gas sealing ring, avoiding material leakage and extending the service life of the equipment.

[0006] Preferably, an inclined hole is formed in the wall of the stuffing box. An air source connector is fixedly connected inside the inclined hole. One side of the air source connector away from the stuffing box is fixedly connected with an air source pipe. By forming an inclined hole at the stuffing box of the impeller shaft and the end cover, the I-shaped gas sealing ring is connected to the air source, forming a local positive gas pressure, so that the powder material in the rotary feeder is isolated from the sealing packing, thus solving the problem of "grinding material" of the sealing mechanism and avoiding equipment damage.

[0007] Preferably, a cooling jacket is fixedly connected to the outside of the stuffing box. A water outlet pipe is fixedly connected to the top of the cooling jacket, and a water inlet pipe is fixedly connected to the bottom of the cooling jacket. By arranging a cooling jacket outside the stuffing box to cool the packing, the wear of the packing is reduced, the service life of the packing is increased, and the sealing effect of the stuffing seal device is ensured.

[0008] Preferably, the I-shaped gas sealing ring includes a sealing ring outer shell. The inner side of the sealing ring outer shell is slidably connected to the outer side of the shaft sleeve. The outer side of the sealing ring outer shell is slidably connected to the inner side of the stuffing box. A gas annular channel is formed on the outer side of the sealing ring outer shell, and a gas purging channel is formed in the wall of the sealing ring outer shell. By arranging the I-shaped gas sealing ring, the sealing ring is in a ring shape, and gas purging ports are evenly distributed in the groove. The I-shaped gas sealing ring is connected to an external air source to form a local positive gas pressure, avoiding the damage of the sealing device caused by the entry of powdery materials into the rotating parts of the equipment, and avoiding the deterioration of the product quality caused by the grinding of the materials.

[0009] Preferably, the pressing device includes a gland. The edge of the gland is threadedly connected to the outer side of the fixing bolt. A return spring is fixedly connected to the bottom of the gland. One side of the return spring away from the gland is fixedly connected to a sliding block. The inner side of the sliding block is slidably connected to the outer side of the gland. The outer side of the sliding block is slidably connected to the outer side of the shaft sleeve. One side of the sliding block away from the shaft sleeve is slidably connected to the inner side of the stuffing box. By arranging the pressing device to press the stuffing seal device, when the stuffing inside the stuffing box is worn, the pressing device can compensate for part of the wear amount, avoiding the reduction of the sealing performance of the equipment after the stuffing is worn and ensuring the sealing of the equipment.

[0010] The beneficial effects of the present utility model are as follows:

[0011] 1. By arranging the stuffing seal device, the present utility model avoids the entry of powdery materials into the rotating parts of the equipment, greatly reduces the mixing of "plasticized materials", deteriorated materials, etc. into the finished products, reduces the failure rate of the equipment, avoids material leakage, prolongs the service life of the equipment, and ensures the stable quality of the products.

[0012] 2. The utility model compensates for part of the wear amount by setting a pressing device to press the packing seal device. When the packing inside the packing seal cavity is worn, the pressing device can avoid the reduction of the sealing performance of the equipment after the packing is worn, thus ensuring the sealing property of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is the front view of the utility model;

[0014] Figure 2 is the sectional view of the utility model;

[0015] Figure 3 is the structural sectional view of the packing seal device of the utility model;

[0016] Figure 4 is the utility model Figure 3 the structural schematic diagram of part B in;

[0017] Figure 5 is the structural sectional view of the I-shaped gas seal ring of the utility model;

[0018] Figure 6 is the utility model Figure 2 the structural schematic diagram of part A in.

[0019] In the figure: 1, shaft sleeve; 2, rotating shaft; 3, packing seal device; 31, packing seal cavity; 32, I-shaped gas seal ring; 321, seal ring outer housing; 322, gas annular channel; 323, gas purging channel; 33, packing; 34, inclined hole; 35, gas source joint; 36, air gas source pipe; 37, cooling sleeve; 38, water outlet pipe; 39, water inlet pipe; 4, pressing device; 41, gland; 42, return spring; 43, sliding block; 5, fixing bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following further describes the utility model in detail with reference to the drawings and specific embodiments. The embodiments of the utility model are given for purposes of illustration and description, and are not exhaustive or limit the utility model to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the utility model, and enable those of ordinary skill in the art to understand the utility model and design various embodiments with various modifications suitable for specific purposes.

[0021] Embodiment:

[0022] Please refer to Figures 1-6, the present utility model provides a technical solution: a sealing mechanism for a rotary feeder, including a shaft sleeve 1; a rotating shaft 2, the outer side of the rotating shaft 2 is slidably connected to the inner side of the shaft sleeve 1; a packing sealing device 3, the inner side of the packing sealing device 3 is slidably connected to the outer side of the shaft sleeve 1, and the packing sealing device 3 is used to seal the rotating part; a pressing device 4, the outer side of the pressing device 4 is slidably connected to the inner side of the packing sealing device 3, and the pressing device 4 is used to press the packing sealing device 3; a fixing bolt 5, the outer side of the fixing bolt 5 is threadedly connected to the edge of the pressing device 4, and the fixing bolt 5 is used to fix the pressing device 4. During use, the packing sealing device 3 and the pressing device 4 are installed on the surface of the shaft sleeve 1, and then the pressing device 4 is fixed by the fixing bolt 5. The pressing device 4 presses the packing sealing device 3. When the rotating shaft 2 operates, the packing sealing device 3 seals the rotating part. By setting the packing sealing device 3, it is possible to prevent powdery materials from entering the rotating part of the equipment, greatly reduce the mixing of "plasticized materials", deteriorated materials, etc. into the finished product, reduce the equipment failure rate, prevent material leakage, extend the equipment service life, and ensure the stable quality of the product.

[0023] The packing sealing device 3 includes a packing sealing cavity 31, the inner side of the packing sealing cavity 31 is slidably connected to the outer side of the shaft sleeve 1, the edge of the packing sealing cavity 31 is threadedly connected to the outer side of the fixing bolt 5, and an I-shaped gas sealing ring 32 is fixedly connected to the inner side of the packing sealing cavity 31. A packing 33 is slidably connected to the outer side of the I-shaped gas sealing ring 32. The inner side of the packing 33 is slidably connected to the outer side of the shaft sleeve 1, and the outer side of the packing 33 is slidably connected to the inner side of the packing sealing cavity 31. During use, the packing sealing cavity 31 in the packing sealing device 3 is installed on the outer side of the shaft sleeve 1, the I-shaped gas sealing ring 32 is placed at the root of the packing sealing cavity 31, and two packings 33 are placed on the outer side of the I-shaped gas sealing ring 32. The pressing device 4 presses the packing 33 and the I-shaped gas sealing ring 32. When the rotating shaft 2 operates, the I-shaped gas sealing ring 32 and the packing 33 seal the rotating part. By using the packing 33 and the I-shaped gas sealing ring 32 to seal the rotating part of the equipment, material leakage can be prevented and the service life of the equipment can be extended.

[0024] An inclined hole 34 is opened in the wall of the stuffing box 31. A gas source connector 35 is fixedly connected inside the inclined hole 34. One side of the gas source connector 35 away from the stuffing box 31 is fixedly connected with an air gas source pipe 36. During use, an inclined hole 34 with a diameter of 12 mm at 45 degrees is opened on the stuffing box 31, and a 10-mm gas source connector 35 is welded for standby, and the air gas source pipe 36 is connected to the gas source connector 35. When installing the I-shaped gas seal ring 32, the I-shaped gas seal ring 32 is placed at the root of the stuffing box 31, and the I-shaped gas seal ring 32 is made to fit with the inclined hole 34. When the rotating shaft 2 is running, gases such as air and nitrogen are sent through the air gas source pipe 36. The air flow flows along the gas source connector 35 to the I-shaped gas seal ring 32, ensuring a certain pressure on the rotating part and preventing powdery materials from entering the rotating part. By opening an inclined hole 34 at the stuffing box 31 of the impeller shaft and the end cover, the I-shaped gas seal ring 32 is connected to the gas source, forming a local gas positive pressure, separating the powder in the rotary feeder from the sealing packing, thereby solving the problem of "grinding the material" of the sealing mechanism and avoiding equipment damage.

[0025] A cooling sleeve 37 is fixedly connected to the outside of the stuffing box 31. A water outlet pipe 38 is fixedly connected to the top of the cooling sleeve 37. A water inlet pipe 39 is fixedly connected to the bottom of the cooling sleeve 37. During use, the water outlet pipe 38 and the water inlet pipe 39 are connected to an external water pipe. The external cooling water enters the inside of the cooling sleeve 37 along the water inlet pipe 39, and then flows along the cooling sleeve 37 to the water outlet pipe 38. The water flow flows along the water outlet pipe 38 to the outside. By arranging the cooling sleeve 37 outside the stuffing box 31, the stuffing is cooled, the wear of the stuffing is reduced, the service life of the stuffing is increased, and the sealing effect of the stuffing seal device 3 is ensured.

[0026] The I-shaped gas seal ring 32 includes a seal ring outer shell 321. The inner side of the seal ring outer shell 321 is slidably connected to the outer side of the shaft sleeve 1. The outer side of the seal ring outer shell 321 is slidably connected to the inner side of the stuffing box 31. A gas annular channel 322 is opened on the outer side of the seal ring outer shell 321. A gas purging channel 323 is opened in the wall of the seal ring outer shell 321. During use, when the rotating shaft 2 is running, gases such as air and nitrogen are sent through the air gas source pipe 36. The air flow flows into the inside of the gas source connector 35, and then flows along the gas source connector 35 to the seal ring outer shell 321. The gas flows along the seal ring outer shell 321 into the gas annular channel 322 and the gas purging channel 323, ensuring a certain pressure on the rotating part and preventing powdery materials from entering the rotating part. By arranging the I-shaped gas seal ring 32, the seal ring is in a ring shape, and gas purging holes are evenly distributed in the groove. The I-shaped gas seal ring 32 is connected to an external gas source, forming a local gas positive pressure, preventing powdery materials from entering the rotating part of the equipment and causing damage to the sealing device, and preventing the product from deteriorating due to material grinding and affecting the product quality.

[0027] The pressing device 4 includes a gland 41. The edge of the gland 41 is threadedly connected to the outer side of the fixing bolt 5. A return spring 42 is fixedly connected to the bottom of the gland 41. One side of the return spring 42 away from the gland 41 is fixedly connected to a sliding block 43. The inner side of the sliding block 43 is slidably connected to the outer side of the gland 41. The outer side of the sliding block 43 is slidably connected to the outer side of the shaft sleeve 1. One side of the sliding block 43 away from the shaft sleeve 1 is slidably connected to the inner side of the stuffing seal cavity 31. During use, place the I-shaped gas seal ring 32 at the root of the stuffing seal cavity 31. Put two packing rings 33 on the outer side of the I-shaped gas seal ring 32. Press the gland 41. The gland 41 drives the return spring 42 to move. The return spring 42 drives the sliding block 43 to move. The sliding block 43 presses the packing rings 33 and the I-shaped gas seal ring 32. The gland 41 and the sliding block 43 drive the return spring 42 to compress. Fix the gland 41 through the fixing bolt 5. When the packing rings 33 are worn, under the influence of its own elastic force, the return spring 42 drives the sliding block 43 to move, so that the sliding block 43 continues to press the packing rings 33 and the I-shaped gas seal ring 32. By setting the pressing device 4, the stuffing seal device 3 is pressed. When the stuffing inside the stuffing seal cavity 31 is worn, the pressing device 4 can compensate for part of the wear amount, avoid the sealing performance of the equipment from decreasing after the stuffing is worn, and ensure the sealing of the equipment.

[0028] Working principle:

[0029] During use, the stuffing seal cavity 31 in the stuffing seal device 3 is installed on the outer side of the shaft sleeve 1. Drill a 45-degree inclined hole 34 with a diameter of 12 mm in the stuffing seal cavity 31, weld a 10-mm air source joint 35 for standby, and connect the air source pipe 36 to the air source joint 35. When installing the I-shaped gas seal ring 32, place the I-shaped gas seal ring 32 at the root of the stuffing seal cavity 31 and make the I-shaped gas seal ring 32 coincide with the inclined hole 34. Put two packing rings 33 on the outer side of the I-shaped gas seal ring 32. Press the gland 41. The gland 41 drives the return spring 42 to move. The return spring 42 drives the sliding block 43 to move. The sliding block 43 presses the packing rings 33 and the I-shaped gas seal ring 32. The gland 41 and the sliding block 43 drive the return spring 42 to compress. Fix the gland 41 through the fixing bolt 5. When the packing rings 33 are worn, under the influence of its own elastic force, the return spring 42 drives the sliding block 43 to move, so that the sliding block 43 continues to press the packing rings 33 and the I-shaped gas seal ring 32;

[0030] During use, connect the water outlet pipe 38 and the water inlet pipe 39 to the external water pipe. The external cooling water flows into the cooling sleeve 37 along the water inlet pipe 39, then flows along the cooling sleeve 37 to the water outlet pipe 38, and the water flows along the water outlet pipe 38 to the outside. The cooling water cools the stuffing;

[0031] When the rotating shaft 2 is running, the I-shaped gas sealing ring 32 and the packing 33 seal the rotating parts. The air source pipe 36 feeds in gases such as air and nitrogen. The air flow moves into the inside of the air source connector 35, and then flows along the air source connector 35 to the sealing ring outer housing 321. The gas flows along the sealing ring outer housing 321 into the gas annular channel 322 and the gas purging channel 323, ensuring a certain pressure in the rotating part and preventing powdered materials from entering the rotating parts.

[0032] Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art and related fields based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention. The structures, devices, and operation methods not specifically described and explained in the present invention shall be implemented by conventional means in the art without special instructions and limitations.

Claims

1. A sealing mechanism for a rotary feeder, characterized in that: include: A bushing (1); A rotating shaft (2), the outer side of the rotating shaft (2) being slidably connected to the inner side of the shaft sleeve (1); A packing seal device (3), the inner side of the packing seal device (3) being slidably connected to the outer side of the shaft sleeve (1), and the packing seal device (3) being used for sealing a rotating part; A pressing device (4), the outer side of the pressing device (4) being slidably connected to the inner side of the packing sealing device (3), and the pressing device (4) being used to press the packing sealing device (3); A fixing bolt (5), the outer side of which is threadedly connected to the edge of the clamping device (4), and the fixing bolt (5) is used to fix the clamping device (4).

2. A sealing mechanism for a rotary feeder according to claim 1, characterized in that: The packing sealing device (3) comprises a packing sealing cavity (31), the inner side of the packing sealing cavity (31) is slidably connected to the outer side of the shaft sleeve (1), the edge of the packing sealing cavity (31) is threadedly connected to the outer side of the fixing bolt (5), the inner side of the packing sealing cavity (31) is fixedly connected to an I-shaped gas sealing ring (32), the outer side of the I-shaped gas sealing ring (32) is slidably connected to a packing (33), the inner side of the packing (33) is slidably connected to the outer side of the shaft sleeve (1), and the outer side of the packing (33) is slidably connected to the inner side of the packing sealing cavity (31).

3. A sealing mechanism for a rotary feeder according to claim 2, characterized in that: An inclined hole (34) is provided in the wall of the packing sealing cavity (31), an air source connector (35) is fixedly connected to the interior of the inclined hole (34), and an air source pipe (36) is fixedly connected to the side of the air source connector (35) away from the packing sealing cavity (31).

4. A sealing mechanism for a rotary feeder according to claim 2, characterized in that: A cooling jacket (37) is fixedly connected to the outside of the packing sealing cavity (31), a water outlet pipe (38) is fixedly connected to the top of the cooling jacket (37), and a water inlet pipe (39) is fixedly connected to the bottom of the cooling jacket (37).

5. A sealing mechanism for a rotary feeder according to claim 2, characterized in that: The I-shaped gas sealing ring (32) comprises a sealing ring outer shell (321), the inner side of the sealing ring outer shell (321) is slidably connected to the outer side of the shaft sleeve (1), the outer side of the sealing ring outer shell (321) is slidably connected to the inner side of the packing sealing cavity (31), a gas annular channel (322) is provided on the outer side of the sealing ring outer shell (321), and a gas purge channel (323) is provided in the wall of the sealing ring outer shell (321).

6. A sealing mechanism for a rotary feeder according to claim 1, characterized in that: The clamping device (4) includes a pressure cover (41), the edge of the pressure cover (41) is threadedly connected to the outer side of the fixing bolt (5), the bottom of the pressure cover (41) is fixedly connected to a rebound spring (42), the side of the rebound spring (42) away from the pressure cover (41) is fixedly connected to a sliding block (43), the inner side of the sliding block (43) is slidably connected to the outer side of the pressure cover (41), the outer side of the sliding block (43) is slidably connected to the outer side of the shaft sleeve (1), and the side of the sliding block (43) away from the shaft sleeve (1) is slidably connected to the inner side of the packing sealing cavity (31).

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