Pressurizing shaft sealing device for screw feeder

Abstract

The utility model discloses a pressurizing shaft sealing device for a screw feeder, and relates to the technical field of sealing of material conveying equipment, the pressurizing shaft sealing device comprises a supporting frame, the top end of the supporting frame is fixedly connected with a feeding device, and the feeding device conveys materials in a rotating mode; the feeding device is matched with the leakage-proof device, the feeding device is fixed to the top end of the supporting frame, the auger is driven by the motor to rotate, efficient conveying of materials is achieved, in the leakage-proof device, pressure can be applied through a bolt, lubricating oil in a lubricating oil cavity lubricates and seals a rotating rod of the auger, rotating friction is reduced, abrasion is reduced, and material leakage is prevented. Meanwhile, the graphite packing, the graphite mud sealing material and the graphite mud pressurizing bolt are combined, the graphite packing is pressurized through the bolt, the wrapping and sealing effects of the graphite packing and the graphite mud sealing material on the auger rotating rod are enhanced, the sealing performance is further improved, and the purpose that the materials are prevented from leaking from the contact position of the auger and the sealing device is achieved.

Description

A pressure shaft seal device for a screw feeder Technical Field

[0001] This utility model relates to the field of sealing technology for material conveying equipment, specifically a pressure shaft sealing device for a screw feeder. Background Technology

[0002] In the field of industrial production, screw feeders are a commonly used material conveying equipment, widely used in many industries such as chemical, food, and building materials.

[0003] Currently, traditional screw feeder shaft sealing devices mostly employ a single sealing structure, such as a packing seal or a mechanical seal. While packing seals are simple in structure and low in cost, they are prone to wear during prolonged use due to the continuous rotation of the auger shaft, leading to decreased sealing performance and an increased risk of material leakage. Mechanical seals, although offering better sealing, have a complex structure and higher installation and maintenance costs. Furthermore, regarding the lubrication of the auger shaft, some devices use grease application, but lack effective sealing measures, leading to grease leakage. This not only reduces lubrication effectiveness but also pollutes the production environment and affects material quality. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a pressure shaft sealing device for screw feeders, which solves the problems of poor sealing performance, easy leakage of auger lubrication, and low material conveying efficiency in traditional screw feeders.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a pressure shaft sealing device for a screw feeder, comprising: a support frame, a feeding device fixedly connected to the top of the support frame, the feeding device conveying material by rotation, a leak-proof device fixedly connected to the inner wall of the feeding device by bolts, the leak-proof device sealing by applying pressure, the feeding device including a motor, an auger rotatably connected to the output end of the motor, the outer wall of the motor fixedly connected to the top of the support frame by support legs, and a leak-proof device rotatably connected to the outer wall of the auger rotor. In terms of material conveying, the feeding device fixed to the top of the support frame, driven by the motor, drives the auger to rotate, achieving efficient material conveying.

[0008] Preferably, a limiting barrel is slidably connected to the outer wall of the auger, a feeding trough is fixedly connected to the top of the limiting barrel, and the bottom of the limiting barrel is fixedly connected to the top of the support frame.

[0009] Preferably, the leak-proof device includes a sealing shell, the inner wall of which is threaded with a grease chamber pressure bolt. The inner wall of the sealing shell has a lubricating oil chamber. The lubricating oil chamber on the inner wall of the sealing shell, together with the grease chamber pressure bolt, can apply pressure through the bolt to lubricate and seal the auger rod with lubricating oil in the lubricating oil chamber, thereby reducing rotational friction and reducing wear.

[0010] Preferably, the outer wall of the sealing shell is fixedly connected to the outer wall of the limiting barrel, the outer wall of the auger rod is rotatably connected to the inner wall of the lubricating oil chamber, and the bottom end of the grease chamber pressure bolt contacts the inner wall of the wheel lubricating oil chamber.

[0011] Preferably, the leak-proof device further includes a graphite packing, the outer wall of which is fixedly connected to a graphite mud sealing material, and the inner walls of the graphite packing and the graphite mud sealing material are arranged in a linear array along the outer wall of the auger rotor. The inner wall of the sealing shell is also threadedly connected to a graphite mud pressure bolt. The combination of the graphite packing, the graphite mud sealing material and the graphite mud pressure bolt, through the bolt applying pressure to the graphite packing, further improves the sealing performance and prevents material from leaking from the contact part between the auger and the sealing device.

[0012] Preferably, the inner wall of the graphite packing and graphite putty sealing material is rotatably connected to the outer wall of the auger rod, and the bottom end of the graphite putty pressure bolt is in contact with the outer wall of the graphite packing.

[0013] Beneficial effects

[0014] This utility model provides a pressure shaft sealing device for a screw feeder. It has the following advantages:

[0015] This utility model, through the combination of a feeding device and a leak-proof device, achieves efficient material conveying by using a feeding device fixed at the top of the support frame and a motor-driven auger. In the leak-proof device, a lubricating oil chamber on the inner wall of the sealing shell, combined with a grease-filled pressure bolt, applies pressure to the auger shaft, lubricating and sealing it with lubricating oil, reducing rotational friction, lowering wear, and preventing material leakage. Simultaneously, the combination of graphite packing, graphite mud sealing material, and graphite mud pressure bolts enhances the sealing effect of the graphite packing and graphite mud sealing material on the auger shaft by applying pressure to the graphite packing, further improving sealing performance and preventing material leakage from the contact point between the auger and the sealing device. Attached Figure Description

[0016] Figure 1 is a schematic diagram of the structure of this utility model;

[0017] Figure 2 is a cross-sectional structural diagram of this utility model;

[0018] Figure 3 is a schematic diagram of the leak-proof device of this utility model.

[0019] In the diagram: 1. Support frame; 2. Feeding device; 20. Motor; 21. Screwdriver; 22. Limiting barrel; 23. Feed chute; 3. Leakage prevention device; 30. Sealing shell; 31. Grease chamber pressure bolt; 32. Lubricating oil chamber; 33. Graphite packing; 34. Graphite putty sealing material; 35. Graphite putty pressure bolt. Detailed Implementation

[0020] 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.

[0021] Example

[0022] Please refer to Figures 1-3. This utility model provides a technical solution: a pressure shaft sealing device for a screw feeder, comprising:

[0023] Support frame 1, feeding device 2 is fixedly connected to the top of support frame 1. Feeding device 2 feeds material by rotating. Leakage prevention device 3 is fixedly connected to the inner wall of feeding device 2 by bolts. Leakage prevention device 3 seals by applying pressure. Power is turned on to feeding device 2. Leakage prevention device 3 is adjusted according to the rotation of feeding device 2.

[0024] The feeding device 2 includes a motor 20, the output end of which is rotatably connected to an auger 21. The outer wall of the motor 20 is fixedly connected to the top of the support frame 1 through support legs. The outer wall of the auger 21 is rotatably connected to a leak-proof device 3. First, the drive power in the feeding device 2 is started, and then the material is poured into the feeding device 2 for discharge. During the material conveying process, the support frame 1 provides stable support for the entire device. The motor 20 in the feeding device 2 serves as a power source and is firmly installed on the support frame 1 through support legs. After the motor 20 is started, the output end of the motor 20 is rotatably connected to the auger 21, and its output end drives the auger 21 to rotate.

[0025] The outer wall of the auger 21 is slidably connected to a limiting barrel 22. The top of the limiting barrel 22 is fixedly connected to a feed chute 23, and the bottom of the limiting barrel 22 is fixedly connected to the top of the support frame 1. Since the top of the limiting barrel 22 is fixedly connected to the feed chute 23, the material enters from the feed chute 23. The limiting barrel 22 guides and positions the material. Since the outer wall of the auger 21 is slidably connected to the limiting barrel 22, the material can accurately enter the conveying path of the auger 21. As the auger 21 rotates, the material is efficiently conveyed to the designated position along the axial direction of the auger 21 under the push of the spiral blades.

[0026] The leak-proof device 3 includes a sealing shell 30, with a grease chamber pressure bolt 31 threadedly connected to the inner wall of the sealing shell 30. A lubricating oil cavity 32 is formed on the inner wall of the sealing shell 30. The outer wall of the sealing shell 30 is fixedly connected to the outer wall of the limiting barrel 22. The outer wall of the auger 21 rotating rod is rotatably connected to the inner wall of the lubricating oil cavity 32. The bottom end of the grease chamber pressure bolt 31 contacts the inner wall of the lubricating oil cavity. The lubricating oil cavity 32 on the inner wall of the sealing shell 30 in the leak-proof device 3, in conjunction with the grease chamber pressure bolt 31, applies pressure to the lubricating oil in the lubricating oil cavity 32 by rotating the grease chamber pressure bolt 31. This forces the lubricating oil to be squeezed to the contact area between the auger 21 rotating rod and the inner wall of the lubricating oil cavity 32, forming a lubricating sealing layer, reducing friction during auger 21 rotation, and lowering wear.

[0027] The leak-proof device 3 also includes a graphite packing 33. A graphite mud sealing material 34 is fixedly connected to the outer wall of the graphite packing 33. The inner walls of the graphite packing 33 and the graphite mud sealing material 34 are arranged in a linear array along the outer wall of the auger 21 rotating rod. A graphite mud pressure bolt 35 is also threadedly connected to the inner wall of the sealing shell 30. The inner walls of the graphite packing 33 and the graphite mud sealing material 34 are rotatably connected to the outer wall of the auger 21 rotating rod. The bottom end of the graphite mud pressure bolt 35 contacts the outer wall of the graphite packing 33. The graphite packing 33, the graphite mud sealing material 34 and the graphite mud pressure bolt 35 in the sealing device work together. By rotating the graphite mud pressure bolt 35, pressure is applied to the graphite packing 33, so that the graphite packing 33 and the graphite mud sealing material 34 are tightly wrapped around the outer wall of the auger 21 rotating rod, further enhancing the sealing effect and ensuring the cleanliness of the production environment and the integrity of material transportation.

[0028] When in use, turn on the power to the feeding device 2 and adjust the leak prevention device 3 according to the rotation of the feeding device 2;

[0029] First, start the drive power in the feeding device 2, then pour the material into the feeding device 2 for discharge. During the material conveying process, the support frame 1 provides stable support for the entire device. The motor 20 in the feeding device 2 serves as the power source and is securely installed on the support frame 1 through the support legs. After starting the motor 20, the output end of the motor 20 is rotatably connected to the auger 21, and its output end drives the auger 21 to rotate.

[0030] Since the top of the limiting barrel 22 is fixedly connected to the feeding chute 23, the material enters from the feeding chute 23. The limiting barrel 22 plays a guiding and positioning role for the material. Since the limiting barrel 22 is slidably connected to the outer wall of the auger 21, the material can accurately enter the conveying path of the auger 21. As the auger 21 rotates, the material is efficiently conveyed to the designated position along the axial direction of the auger 21 under the push of the spiral blades.

[0031] The lubricating oil cavity 32 on the inner wall of the sealing shell 30 in the leak-proof device 3 is connected to the grease cavity pressure bolt 31. Since the inner wall of the sealing shell 30 is threaded with the grease cavity pressure bolt 31, by rotating the grease cavity pressure bolt 31, pressure is applied to the lubricating oil in the lubricating oil cavity 32, so that the lubricating oil is squeezed to the contact part between the auger 21 rotating rod and the inner wall of the lubricating oil cavity 32, forming a lubricating sealing layer, reducing the friction when the auger 21 rotates, and reducing wear.

[0032] The graphite packing 33, graphite mud sealing material 34, and graphite mud pressure bolt 35 in the sealing device work together to apply pressure to the graphite packing 33 by rotating the graphite mud pressure bolt 35, so that the graphite packing 33 and graphite mud sealing material 34 are tightly wrapped around the outer wall of the auger 21 rotating rod, further enhancing the sealing effect and ensuring the cleanliness of the production environment and the integrity of material transportation.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0034] 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 alterations 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 pressure shaft seal device for a screw feeder, comprising: The support frame (1) is characterized in that: a feeding device (2) is fixedly connected to the top of the support frame (1), the feeding device (2) feeds materials by rotating, and a leak-proof device (3) is fixedly connected to the inner wall of the feeding device (2) by bolts, and the leak-proof device (3) seals by applying pressure; the feeding device (2) includes a motor (20), the output end of the motor (20) is rotatably connected to an auger (21), the outer wall of the motor (20) is fixedly connected to the top of the support frame (1) by a support leg, and the outer wall of the auger (21) is rotatably connected to the leak-proof device (3).

2. The pressure shaft sealing device for a screw feeder according to claim 1, characterized in that: The outer wall of the auger (21) is slidably connected to a limiting barrel (22), the top of the limiting barrel (22) is fixedly connected to a feeding trough (23), and the bottom of the limiting barrel (22) is fixedly connected to the top of the support frame (1).

3. The pressure shaft sealing device for a screw feeder according to claim 1, characterized in that: The leak-proof device (3) includes a sealing shell (30), the inner wall of which is threaded with a grease chamber pressure bolt (31), and the inner wall of the sealing shell (30) is provided with a lubricating oil chamber (32).

4. The pressure shaft sealing device for a screw feeder according to claim 3, characterized in that: The outer wall of the sealing shell (30) is fixedly connected to the outer wall of the limiting barrel (22), the outer wall of the auger (21) rotating rod is rotatably connected to the inner wall of the lubricating oil chamber (32), and the bottom end of the grease chamber pressure bolt (31) is in contact with the inner wall of the wheel lubricating oil chamber.

5. A pressure shaft sealing device for a screw feeder according to claim 3, characterized in that: The leak-proof device (3) also includes a graphite packing (33), the outer wall of which is fixedly connected with a graphite mud sealing material (34), and the inner walls of the graphite packing (33) and the graphite mud sealing material (34) are arranged in a linear array along the outer wall of the auger (21) rotating rod. The inner wall of the sealing shell (30) is also threaded with a graphite mud pressure bolt (35).

6. A pressure shaft sealing device for a screw feeder according to claim 5, characterized in that: The inner walls of the graphite packing (33) and the graphite mud sealing material (34) are rotatably connected to the outer wall of the auger (21) rotating rod, and the bottom end of the graphite mud pressure bolt (35) is in contact with the outer wall of the graphite packing (33).

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