Sealing assembly for main shaft of chopping and mixing knife

Abstract

The utility model belongs to the field of food machinery, and particularly relates to a chopping knife main shaft sealing component, which is characterized in that a fastening nut is mounted at the front end of a knife shaft, a knife shaft sleeve is sleeved on the knife shaft and connected with the rear end of the fastening nut, a pressure plate is mounted on the outer side of the knife shaft sleeve and connected with the rear end of the fastening nut, and a chopping knife group is mounted on the outer side of the knife shaft sleeve and connected with the pressure plate. The material throwing pressure plate is installed on the cutter shaft and connected with the rear end of the cutter shaft sleeve, the oil seal shaft sleeve is installed on the cutter shaft and connected with the rear end of the material throwing pressure plate, the rotary oil seal is connected with the outer side of the oil seal shaft sleeve, the outer side of the rotary oil seal is connected with the front bearing gland, and the rear end of the rotary oil seal is connected with the circlip for a hole. And a scraper knife is mounted in the groove. According to the utility model, a plurality of parts are adopted for continuous and tight sealing, so that a good sealing effect on the main shaft of the chopping and mixing knife is realized; in addition, compared with a common labyrinth pressure plate, the labyrinth pressure plate is simple in structure, impurities can be thrown out through the scraper knife and the centrifugal effect, and the labyrinth pressure plate is convenient and fast to use.

Description

Technical Field

[0001] The utility model belongs to the field of food machinery, in particular to a chopping knife main shaft sealing component. Background Art

[0002] The chopping knife spindle is installed to realize the processing of various parts. The matching accuracy requirements of some parts inside the chopping knife spindle are very high. The debris in the internal parts of the spindle needs to be discharged in time, otherwise it will affect the service life of the machine, and in severe cases will cause equipment damage.

[0003] The current chopping blade spindle seal structure adopts a labyrinth pressure plate. For example, Chinese patent CN207161716U adopts a labyrinth pressure plate that meshes with the axial contact surface of the front bearing cover through a triangular thread or a serrated thread. The labyrinth pressure plate with this thread structure is relatively complex, has high requirements for precision and accuracy, is prone to errors, and causes product waste. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a chopping knife main shaft sealing component with simple structure and high impurity removal efficiency.

[0005] The technical solution adopted by the utility model to solve the technical problem is:

[0006] The utility model provides a chopping knife main shaft sealing component, wherein a fastening nut is installed at the front end of the knife shaft, a knife shaft sleeve is sleeved on the knife shaft and connected with the rear end of the fastening nut, a pressure plate is installed on the outside of the knife shaft sleeve and connected with the rear end of the fastening nut, a chopping knife group is installed on the outside of the knife shaft sleeve and connected with the pressure plate, a material-spinning pressure plate is installed on the knife shaft and connected with the rear end of the knife shaft sleeve, an oil seal sleeve is installed on the knife shaft and connected with the rear end of the material-spinning pressure plate, a rotating oil seal is connected with the outside of the oil seal sleeve, the outside of the rotating oil seal is connected with a front bearing gland, an elastic retaining ring is used for a connecting hole at the rear end of the rotating oil seal, a short cylindrical roller bearing is installed on the knife shaft and connected with the rear end of the oil seal sleeve, a deep groove ball bearing is installed on the knife shaft and connected with the rear end of the short cylindrical roller bearing, a front bearing oil-spinning ring is installed on the knife shaft and connected with the rear end of the deep groove ball bearing, a front bearing oil-spinning ring is connected with the outside of the front bearing oil-spinning ring, a groove is formed on the material-spinning pressure plate, and a scraper knife is installed in the groove.

[0007] Furthermore, the scraper blade is trapezoidal.

[0008] Further, the groove has a first end and a second end, and the scraper blade is installed at the first end of the groove.

[0009] Furthermore, a guide flat key is provided in the knife shaft.

[0010] Furthermore, the rotary oil seal is a skeleton type rotary oil seal.

[0011] Furthermore, the front bearing gland is provided with a hexagon socket head screw and a spring washer.

[0012] The advantages and positive effects of the utility model are:

[0013] The utility model adopts a variety of parts to seal continuously and tightly, so as to achieve a good sealing effect on the chopping knife main shaft, thereby preventing a large amount of debris from entering from the chopping knife main shaft, extending the service life of the machine and avoiding losses; in addition, the material-rejecting pressure plate in the sealing assembly of the chopping knife main shaft of the utility model adopts a structure with a scraper knife. Compared with the general labyrinth pressure plate, the structure is simple and does not require an overly strict and sophisticated design. Impurities can be thrown out by using the scraper knife and centrifugal action, which is convenient and quick, reduces the running resistance, greatly improves the working efficiency, can effectively avoid equipment damage and improve its own performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the main shaft seal assembly of the chopping and mixing knife of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the material-throwing pressure plate of the utility model.

[0016] The above drawings include the following reference numerals:

[0017] 1-knife shaft; 2-fastening nut; 3-pressure plate; 4-guide flat key; 5-chopping knife group; 6-knife shaft sleeve; 7-material throwing pressure plate; 71-scraper knife; 72-groove; 721-first end; 722-second end; 8-oil seal sleeve; 9-front bearing pressure cover; 10-rotating oil seal; 11-elastic retaining ring for hole; 12-short cylindrical roller bearing; 13-deep groove ball bearing; 14-front bearing oil baffle plate; 15-front bearing oil throwing ring. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0019] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0020] In the description of the present utility model, it should be understood that the terms "upper", "lower", "front", "back", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0021] like Figure 1 As shown, the utility model provides a chopping knife main shaft sealing assembly, wherein a fastening nut 2 is installed at the front end of the knife shaft 1, a knife shaft sleeve 6 is sleeved on the knife shaft 1 and connected to the rear end of the fastening nut 2, a pressure plate 3 is installed on the outside of the knife shaft sleeve 6 and connected to the rear end of the fastening nut 2, a chopping knife group 5 is installed on the outside of the knife shaft sleeve 6 and connected to the pressure plate 3, a material-rejecting pressure plate 7 is installed on the knife shaft 1 and connected to the rear end of the knife shaft sleeve 6, an oil seal sleeve 8 is installed on the knife shaft 1 and connected to the rear end of the material-rejecting pressure plate 7, and a rotary oil seal 10 is connected to the outer side of the oil seal sleeve 8. Specifically, the rotary oil seal 10 is a skeleton-type rotary oil seal. The outer side of the rotary oil seal 10 is connected to a front bearing pressure cover 9, and in addition, the front bearing pressure cover 9 is provided with a hexagon socket head screw and a spring washer. The rear end connection hole of the rotary oil seal 10 is connected with an elastic retaining ring 11, a short cylindrical roller bearing 12 is installed on the cutter shaft 1 and connected to the rear end of the oil seal sleeve 8, a deep groove ball bearing 13 is installed on the cutter shaft 1 and connected to the rear end of the short cylindrical roller bearing 12, a front bearing oil slinger 15 is installed on the cutter shaft 1 and connected to the rear end of the deep groove ball bearing 13, and a front bearing oil baffle 14 is connected to the outer side of the front bearing oil slinger 15. In addition, a guide flat key 4 is provided in the cutter shaft 1.

[0022] The utility model utilizes a fastening nut 2, a pressure plate 3, a chopping and mixing knife group 5, a knife shaft sleeve 6, a material-slinging pressure plate 7, an oil seal sleeve 8, a front bearing gland 9, a rotary oil seal 10, an elastic retaining ring for a hole 11, a short cylindrical roller bearing 12, a deep groove ball bearing 13, a front bearing oil baffle plate 14, a front bearing oil-slinging ring 15 and other components to facilitate sealing the chopping and mixing knife main shaft; thereby preventing the chopping and mixing knife main shaft from being damaged due to a large amount of debris entering the chopping and mixing knife main shaft, thereby improving the service life of the machine.

[0023] like Figure 2As shown, a groove 72 is formed on the material-spinning plate 7, and a scraper blade 71 is installed in the groove 72. The groove 72 has a first end 721 and a second end 722. The scraper blade 71 is installed at the first end 721 of the groove 72, and the scraper blade 71 is trapezoidal. The utility model uses the material-spinning plate 7 with the scraper blade 71 to run at a high speed, so that impurities are thrown out from the inside to the outside under the action of centrifugal force, achieving efficient separation and avoiding impurity residue, thereby being able to timely discharge the impurities in the internal parts of the main shaft, thereby improving the service life of the machine and avoiding equipment damage; at the same time, the impurities inside the machine can be thrown out at any time, reducing the running resistance and improving the work efficiency.

[0024] The method of using the utility model is:

[0025] First, install the fastening nut 2, pressure plate 3, chopping knife group 5, knife shaft sleeve 6, material-spinning pressure plate 7, oil seal sleeve 8, front bearing gland 9, rotary oil seal 10, hole elastic retaining ring 11, short cylindrical roller bearing 12, deep groove ball bearing 13, front bearing oil baffle plate 14, front bearing oil-spinning ring 15 on the knife shaft 1 in sequence. When the machine is working, the material-spinning pressure plate 7 drives the scraper knife 71 to rotate at high speed. Under the action of centrifugal force, the impurities generated are scraped up by the scraper knife 71 and thrown out from the inside to the outside.

[0026] The utility model adopts a variety of parts to seal continuously and tightly, so as to achieve a good sealing effect on the chopping knife main shaft, thereby preventing a large amount of debris from entering from the chopping knife main shaft, extending the service life of the machine and avoiding losses; in addition, the material-rejecting pressure plate 7 in the sealing assembly of the chopping knife main shaft of the utility model adopts a structure with a scraper knife 71. Compared with the general labyrinth pressure plate, the structure is simple and does not require an overly strict and sophisticated design. Impurities can be thrown out by using the scraper knife and centrifugal action, which is convenient and quick, reduces the running resistance, greatly improves the working efficiency, can effectively avoid equipment damage and improve its own performance.

[0027] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A chopping knife spindle seal assembly, characterized in that: A fastening nut (2) is installed at the front end of the knife shaft (1); a knife shaft sleeve (6) is sleeved on the knife shaft (1) and connected to the rear end of the fastening nut (2); a pressure plate (3) is installed on the outside of the knife shaft sleeve (6) and connected to the rear end of the fastening nut (2); a chopping knife group (5) is installed on the outside of the knife shaft sleeve (6) and connected to the pressure plate (3); a material-spinning pressure plate (7) is installed on the knife shaft (1) and connected to the rear end of the knife shaft sleeve (6); an oil seal sleeve (8) is installed on the knife shaft (1) and connected to the rear end of the material-spinning pressure plate (7); a rotary oil seal (10) is connected to the outside of the oil seal sleeve (8); and the outside of the rotary oil seal (10) is connected to the front bearing A pressure cover (9), an elastic retaining ring (11) is used for the rear end connection hole of the rotary oil seal (10), a short cylindrical roller bearing (12) is installed on the cutter shaft (1) and connected to the rear end of the oil seal sleeve (8), a deep groove ball bearing (13) is installed on the cutter shaft (1) and connected to the rear end of the short cylindrical roller bearing (12), a front bearing oil thrower ring (15) is installed on the cutter shaft (1) and connected to the rear end of the deep groove ball bearing (13), a front bearing oil baffle plate (14) is connected to the outer side of the front bearing oil thrower ring (15), and a groove (72) is formed on the material throwing pressure plate (7), and a scraper knife (71) is installed in the groove (72).

2. The chopping knife spindle seal assembly according to claim 1, characterized in that: The scraper blade (71) is trapezoidal.

3. The chopping knife spindle seal assembly according to claim 2, characterized in that: The groove (72) has a first end (721) and a second end (722), and the scraper blade (71) is installed at the first end (721) of the groove (72).

4. The chopping knife spindle seal assembly according to claim 3, characterized in that: A guide flat key (4) is arranged inside the knife shaft (1).

5. The chopping knife spindle seal assembly according to claim 4, characterized in that: The rotary oil seal (10) is a skeleton type rotary oil seal.

6. The chopping knife spindle seal assembly according to claim 5, characterized in that: The front bearing pressure cover (9) is provided with a hexagon socket head screw and a spring washer.

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