Airtight high-pressure rotary valve for material conveying

Abstract

The utility model discloses an airtight type high-pressure rotary valve for material conveying. The airtight type high-pressure rotary valve comprises a shell and a rotary main shaft, wherein the rotary main shaft is erected on the shell through a bearing and is fixedly sleeved with a material stirring blade assembly; the material stirring blade assembly comprises a plurality of blades and two side baffle discs, a circle of sealing groove is formed in the middle of the outer edge face of each side baffle disc, and a first movable sealing ring capable of being in movable sealing with the step face of the shell is fixedly arranged in each sealing groove; two branch blades are integrally formed on the end part of each blade in a U-shaped manner and extend outwards, and a tail end material stirring sheet is mounted at the end part of each branch blade through a spring; and a second movable sealing ring is arranged between the sealing end cover and the rotating main shaft. Air leakage is not prone to occurring between the blades and the inner wall of the shell, between the edge blocking disc and the inner wall of the shell and between the rotating main shaft and the sealing end cover, and therefore high pressure can be easily maintained in a material conveying pipeline, materials can be efficiently conveyed, and the materials are not prone to being stuck in the feeding process.

Description

Technical Field

[0001] The utility model belongs to the field of material conveying equipment, in particular to an airtight high-pressure rotary valve for material conveying. Background Art

[0002] Rotary valves are widely used in pipeline air feeding methods because of their orderly, controllable, convenient and fast feeding, so as to facilitate the transportation and feeding of materials. With the development of science and technology, the processing speed of many materials is getting faster and faster, and the speed requirements for pipeline air feeding are also getting faster and higher. If the pipeline feeding method has a high delivery volume, it will be very effective to keep a high pressure in the pipeline. However, the existing pipeline feeding equipment is usually difficult to achieve good airtight protection, so the material transportation efficiency has been difficult to improve, which ultimately leads to the inability to meet the rapid production needs of the back end, affecting the overall production efficiency. For this reason, people need to find a better way to solve it. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an airtight high-pressure rotary valve for material conveying which has a simple and ingenious structure, good airtightness and is not prone to material jamming during feeding.

[0004] The utility model is realized by the following technical solutions:

[0005] The gas-tight high-pressure rotary valve for material conveying comprises a shell with a material inlet at the upper end and a material outlet at the lower end, and a rotating main shaft mounted on the shell through a bearing and having a material-dispensing blade assembly fixedly sleeved on the upper end;

[0006] The material-shifting blade assembly comprises a plurality of blades that are fixedly connected to each other and are evenly distributed radially in the middle, and two side stop discs at both ends. The inner wall of the shell is provided with a step surface that can match with the outer edge surfaces of the two side stop discs. A circle of sealing grooves are dug in the middle of the outer edge surfaces of the two side stop discs that match with the step surface of the inner wall of the shell. A first dynamic sealing ring that can perform dynamic sealing with the step surface of the shell is fixedly provided in the sealing groove, so as to realize the sealing between the side stop disc and the inner wall of the shell when the material-shifting blade assembly rotates relative to the shell.

[0007] The ends of the blades are integrally formed with two blades extending outward in a U shape, and the ends of the blades are inwardly dug with a mounting groove, and an end-shifting piece is mounted in the mounting groove through a spring, and the bottom of the end-shifting piece is connected to one end of the spring, and the other end of the spring is fixed to the bottom of the mounting groove, and a circle of protrusions is also integrally formed on the tail of the end-shifting piece, and a guide groove of a certain length that can cooperate with the protrusion is provided on the inner wall of the mounting groove, so that the end-shifting piece can move up and down relative to the blade along the guide groove;

[0008] The two ends of the rotating main shaft extend out of the housing and are sealed by two sealing end covers at both ends, and a plurality of second dynamic sealing rings are arranged between the sealing end cover and the rotating main shaft to achieve sealing when the rotating main shaft and the sealing end cover rotate relative to each other.

[0009] Preferably, a plurality of second dynamic sealing rings are provided between the sealing end cover and the rotating main shaft. The specific structure is as follows: on the two ends of the rotating main shaft extending out of the shell, a plurality of convex rings fixed to the rotating main shaft are provided in sequence from the inside to the outside along the axial direction, and grooves are formed between adjacent convex rings. Between the sealing end cover and the rotating main shaft, a second dynamic sealing ring corresponding to each groove is provided at a position corresponding to the groove and can be at least partially embedded in the groove.

[0010] Preferably, the bearing is located inside the sealing end cover, and a plurality of second dynamic sealing rings arranged between the sealing end cover and the rotating main shaft are located inside the bearing to help the bearing block materials or material dust.

[0011] Preferably, the rotating spindle is driven to rotate by a motor.

[0012] Preferably, the end stripping pieces on the ends of each blade are wear-resistant blades.

[0013] The beneficial effects of the utility model are:

[0014] The utility model is an airtight high-pressure rotary valve for material conveying, which has an ingenious structure. By extending the end of the blade outward into two sub-blades, and providing an end-shifting piece on each sub-blade through a spring, the end of the blade can be kept in contact with the inner wall of the shell due to the thrust of the spring, thereby achieving real-time sealing between the blade and the inner wall of the shell, so that it is not affected by some vibration displacements that may exist during the rotation process, thereby avoiding air leakage from the blade, and easily ensuring the high pressure inside the material conveying pipeline. Moreover, each blade has two end-shifting pieces that can avoid air leakage, thereby achieving a better sealing effect and further ensuring the high pressure in the pipeline. In addition, because the end-shifting piece can move up and down and has a buffering effect , it is not easy to get stuck when encountering materials during material feeding, which can make material transportation smoother; the sealing between the two side discs at both ends of the material-dispensing blade assembly and the inner wall of the shell can also prevent gas from leaking from the sides, which is conducive to ensuring the high pressure inside the material conveying pipeline. At the same time, it can prevent material from overflowing from there and contaminating the bearing as much as possible; in addition, a number of second dynamic sealing rings are provided on the inner side of the bearing between the sealing end cover and the rotating main shaft, which can not only further prevent gas from leaking from both sides, but also prevent dust particles from entering the bearing and affecting its operation, making the machine run safer. Therefore, it is easy to maintain high pressure in the material conveying pipeline from several aspects, so that materials can be transported efficiently, with strong practicality and worthy of promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] For ease of explanation, the present invention is described in detail by the following specific embodiments and drawings.

[0016] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the main structure;

[0018] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure along the AA direction;

[0019] Figure 4 for Figure 1 A side view schematic diagram of the structure;

[0020] Figure 5 for Figure 4 The CC section structure diagram in FIG.

[0021] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0022] Figure 7 It is a schematic diagram of the three-dimensional structure of the material-shifting blade assembly in the embodiment of the utility model. DETAILED DESCRIPTION

[0023] like Figure 1-7 As shown, the airtight high-pressure rotary valve for material conveying comprises a housing 1 with a material inlet at the upper end and a material outlet at the lower end, and a rotating main shaft 3 mounted on the housing 1 through a bearing 2 and having a material-dispensing blade assembly 4 fixedly sleeved thereon;

[0024] The material-shifting blade assembly 4 comprises a plurality of blades 5 which are fixedly connected to each other and are evenly distributed radially in the middle, and two side stop discs 6 which are located at both ends. A step surface which can match with the outer edge surfaces of the two side stop discs 6 is provided on the inner wall of the shell 1. A sealing groove 7 is also dug in the middle of the outer edge surfaces of the two side stop discs 6 which match with the step surface of the inner wall of the shell 1. A first dynamic sealing ring 8 which can perform dynamic sealing with the step surface of the shell is fixedly provided in the sealing groove 7, so as to realize the sealing between the side stop disc 6 and the inner wall of the shell 1 when the material-shifting blade assembly 4 rotates relative to the shell 1.

[0025] At the end of the blade 5, two blades 9 are integrally formed in a U-shape and extend outward, and a mounting groove is dug inward at the end of each blade 9, and an end-shifting piece 11 is tightly but slidably mounted in the mounting groove through a spring 10, and the bottom of the end-shifting piece 11 is connected to one end of the spring 10, and the other end of the spring 10 is fixed to the bottom of the mounting groove. A circle of protrusions is also integrally formed on the tail of the end-shifting piece 11, and a guide groove 12 of a certain length that can cooperate with the protrusion is provided on the inner wall of the mounting groove, so that the end-shifting piece 11 can move up and down relative to the blade 5 along the guide groove 12;

[0026] Both ends of the rotating main shaft 3 extend out of the housing 1 and are sealed by two sealing end covers 13 at both ends, and a plurality of second dynamic sealing rings 14 are provided between the sealing end covers 13 and the rotating main shaft 3 to achieve sealing between the rotating main shaft 3 and the sealing end covers 13 during relative rotation.

[0027] The specific structure of a plurality of second dynamic sealing rings 14 provided between the sealing end cover 13 and the rotating main shaft 3 is as follows: on the two ends of the rotating main shaft 3 extending out of the shell, a plurality of convex rings fixed to the rotating main shaft 3 are provided in sequence from the inside to the outside along the axial direction, and grooves are formed between adjacent convex rings. Between the sealing end cover 13 and the rotating main shaft 3, a second dynamic sealing ring 14 that can be at least partially embedded in the groove is provided at the position corresponding to each groove.

[0028] The bearing 2 is located inside the sealing end cover 13 , and a plurality of second dynamic sealing rings 14 arranged between the sealing end cover 13 and the rotating main shaft 3 are located inside the bearing 3 , so as to help the bearing 2 block materials or material dust.

[0029] The rotating spindle 3 is driven to rotate by a motor 15 .

[0030] The end stripping pieces 11 on the ends of the blades 5 are all wear-resistant blades.

[0031] When feeding materials into the rotary valve, the end of the blade is extended outward to form two sub-blades, and each sub-blade is provided with an end material-shifting piece through a spring, so that the end of the blade can be kept in contact with the inner wall of the shell due to the thrust of the spring, thereby achieving real-time sealing between the blade and the inner wall of the shell, so that it is not affected by some vibration displacement that may exist during the rotation process, thereby avoiding air leakage from the blade, and easily ensuring the high pressure inside the material conveying pipeline, and each blade has two end material-shifting pieces that can avoid air leakage, thereby achieving a better sealing effect and further ensuring the high pressure in the pipeline; In addition, because the end stripper has a buffering property, it is not easy to get stuck when encountering materials during material feeding, which can make material transportation smoother; the seal between the two side stop discs at both ends of the stripper blade assembly and the inner wall of the shell can also prevent gas from leaking from the edges, which is conducive to ensuring the high pressure inside the material conveying pipeline. At the same time, it can prevent materials from overflowing from there and contaminating the bearings as much as possible; in addition, a number of second dynamic sealing rings are provided on the inner side of the bearing between the sealing end cover and the rotating main shaft, which can not only further prevent gas from leaking from both sides, but also prevent dust particles from entering the bearings and affecting their operation, making the machine operation safer.

[0032] The utility model discloses an airtight high-pressure rotary valve for material conveying, which has an ingenious structure. It is not easy for air to leak between the blades and the inner wall of the shell, between the side stop disc and the inner wall of the shell, and between the rotating main shaft and the sealing end cover. Therefore, it is easy to maintain high pressure in the material conveying pipeline, so that the material can be conveyed efficiently. In addition, because the end material stripping piece can move up and down and has buffering properties, it is not easy to get stuck when encountering materials during material feeding, which can make material conveying smoother. It is highly practical and worthy of promotion.

[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that are not conceived through creative work should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope defined in the claims.

Claims

1. Airtight high-pressure rotary valve for material transportation, characterized in that: It includes a shell with a material inlet at the upper end and a material outlet at the lower end, and a rotating main shaft mounted on the shell through a bearing and having a material-dispensing blade assembly fixedly sleeved on the upper end; The material-dispensing blade assembly comprises a plurality of blades fixedly connected to each other and evenly distributed radially in the middle and two side stop discs at both ends. The inner wall of the shell is provided with a step surface that can match with the outer edge surfaces of the two side stop discs. A sealing groove is also dug in the middle of the outer edge surfaces of the two side stop discs that match with the step surface of the inner wall of the shell. A first dynamic sealing ring that can perform dynamic sealing with the step surface of the shell is fixedly provided in the sealing groove. The ends of the blades are integrally formed with two blades extending outward in a U shape, and the ends of the blades are inwardly dug with a mounting groove, and an end-shifting piece is mounted in the mounting groove through a spring, and the bottom of the end-shifting piece is connected to one end of the spring, and the other end of the spring is fixed to the bottom of the mounting groove, and a circle of protrusions is also integrally formed on the tail of the end-shifting piece, and a guide groove of a certain length that can cooperate with the protrusion is provided on the inner wall of the mounting groove, so that the end-shifting piece can move up and down relative to the blade along the guide groove; The two ends of the rotating main shaft extend out of the housing and are sealed by two sealing end covers at the two ends, and a plurality of second dynamic sealing rings are arranged between the sealing end covers and the rotating main shaft.

2. The airtight high-pressure rotary valve for material transportation according to claim 1, characterized in that: The specific structure of a plurality of second dynamic sealing rings provided between the sealing end cover and the rotating main shaft is as follows: on the two ends of the rotating main shaft extending out of the shell, a plurality of convex rings fixed to the rotating main shaft are provided in sequence from the inside to the outside along the axial direction, and grooves are formed between adjacent convex rings. Between the sealing end cover and the rotating main shaft, a second dynamic sealing ring corresponding to each groove is provided at a position corresponding to the groove, which can be at least partially embedded in the groove.

3. The airtight high-pressure rotary valve for material transportation according to claim 1, characterized in that: The bearing is located inside the sealing end cover, and a plurality of second dynamic sealing rings arranged between the sealing end cover and the rotating main shaft are located inside the bearing so as to help the bearing block materials or material dust.

4. The airtight high-pressure rotary valve for material transportation according to claim 1, characterized in that: The rotating main shaft is driven to rotate by a motor.

5. The airtight high-pressure rotary valve for material transportation according to claim 1, characterized in that: The end strippers on the ends of each blade are wear-resistant blades.

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