Sealed discharging rotary valve

Abstract

A sealed discharging rotary valve relates to the technical field of valve body structures and comprises a feeding cylinder and a discharging cylinder which are arranged side by side from top to bottom, the feeding cylinder is communicated with the discharging cylinder, the feeding cylinder is connected with an upper disc assembly, an upper rotary valve plate for opening and closing a material channel is rotatably arranged in the upper disc assembly, and the discharging cylinder is connected with a lower disc assembly. And a lower rotary valve plate for opening and closing the material channel is rotationally arranged in the lower disc assembly, and the upper rotary valve plate and the lower rotary valve plate synchronously work through a driving structure and alternately open and close the material channel. The problems that in the prior art, no matter a rotary valve or a double-butterfly valve is adopted, if conveyed materials are micro-powder particles, abrasion is serious, frequent replacement is needed, the production efficiency is affected, and the operation cost of a production line is also increased are solved.

Description

Technical Field

[0001] The invention relates to the technical field of valve body structures, in particular to a sealed blanking rotary valve. Background Art

[0002] The rotary valve is a special unloading equipment, which is often used in pneumatic output systems. For pressure output systems or negative pressure output systems, the rotary valve can isolate the upper and lower air pressures of the unloader and play a role in locking air. Therefore, the rotary valve is an important component commonly used in pneumatic conveying systems.

[0003] The prior art discloses a patent with a publication number of CN220770252U. The solution includes a valve body, which includes a welded shell. The welded shell includes an upper shell and a lower shell. The structure of the upper shell is the same as that of the lower shell. The upper shell and the lower shell are connected by a flange. A feed port reducer is provided at the opening at one end of the upper shell, which has the effect of increasing the service life of the double-layer flap valve.

[0004] As the existing devices are used, the shortcomings of this technology are gradually exposed, mainly in the following aspects: The current rotary valve or double butterfly valves set up in sequence up and down have achieved the purpose of locking air and unloading materials. However, whether a rotary valve or a double butterfly valve is used, if the conveyed material is micro-powder particles, it will cause serious wear and tear and need to be replaced frequently, affecting production efficiency and increasing the operating cost of the production line.

[0005] In summary, the prior art obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the invention

[0006] In view of the defects in the prior art, the present invention solves the problem that in the traditional technology, whether a rotary valve or a double butterfly valve is used, if the conveyed material is micro-powder particles, it will cause severe wear and tear, require frequent replacement, affect production efficiency, and increase the operating costs of the production line.

[0007] To solve the above problems, the present invention provides the following technical solutions: The sealed unloading rotary valve comprises a feeding cylinder and a discharging cylinder arranged in parallel from top to bottom, wherein the feeding cylinder and the discharging cylinder are connected to each other. The feed barrel is connected to an upper disc assembly, and an upper rotary valve plate for opening and closing the material channel is rotatably arranged in the upper disc assembly. The discharging cylinder is connected to a lower plate assembly, and a lower rotary valve plate for opening and closing the material channel is rotatably arranged in the lower plate assembly. The upper rotary valve plate and the lower rotary valve plate work synchronously through a driving structure, and the upper rotary valve plate and the lower rotary valve plate open and close the material channel alternately.

[0008] As an optimized solution, the centers of the upper rotary valve plate and the lower rotary valve plate are offset from the centers of the feed cylinder and the discharge cylinder.

[0009] As an optimized solution, the upper disk assembly includes an upper disk shell, in which an upper mounting cavity in an annular shape is provided, and two upper sealing liners are fixedly connected to the upper mounting cavity in parallel from top to bottom, and the upper rotary valve plate is rotatably arranged in the area between the two upper sealing liners.

[0010] As an optimized solution, an upper circumferential air seal communicating with the upper mounting cavity is connected to the outer wall of the upper disk shell.

[0011] As an optimized solution, the upper plate shell is provided with an upper plate channel through-through, the two upper sealing liners are provided with avoidance holes connected to the upper plate channel, and the upper rotary valve plate is provided with an upper waist-shaped valve hole for opening and closing the upper plate channel.

[0012] As an optimized solution, the upper plate shell includes an upper pressure plate 1 and an upper pressure plate 2 arranged in parallel from top to bottom, the upper pressure plate 1 and the upper pressure plate 2 are fixedly connected by a bolt structure, and the feed barrel is fixedly connected to the upper pressure plate 1.

[0013] As an optimized solution, the lower disk assembly includes a lower disk shell, in which a ring-shaped lower mounting cavity is provided, and two lower sealing liners are fixedly connected to the lower mounting cavity in parallel from top to bottom, and the lower rotary valve plate is rotatably arranged in the area between the two lower sealing liners.

[0014] As an optimized solution, a lower circumferential air seal communicating with the lower mounting cavity is connected to the outer wall of the lower plate shell.

[0015] As an optimized solution, a lower plate channel is provided through the lower plate shell, avoidance holes connected to the lower plate channel are provided on the two lower sealing liners, and a lower waist-shaped valve hole for opening and closing the lower plate channel is provided on the lower rotary valve plate.

[0016] As an optimized solution, the lower plate shell includes a lower pressure plate one and a lower pressure plate two arranged in parallel from top to bottom, the lower pressure plate one and the lower pressure plate two are fixedly connected by a bolt structure, and the discharge barrel is fixedly connected to the lower pressure plate two.

[0017] As an optimized solution, the upper pressure plate 2 is connected to the lower pressure plate 1 through a cache tube.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The upper sealing liner and the lower sealing liner are used to realize the face seal, which can greatly extend the service life compared with the line seal of butterfly valve and rotary valve; The face seal is completely covered. Even if the face seal is worn, the existence of the upper shell and the lower shell will prevent material leakage. The upper sealing liner and the lower sealing liner are easy to replace and the cost is low; The present invention adopts the above technical solution, which has ingenious conception and reasonable structure, can not only realize sealed material discharge, but also prolong the service life of the equipment and reduce the maintenance and replacement costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0020] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the structure of the exterior of the present invention; Figure 3 It is a structural schematic diagram of the upper rotary valve plate of the present invention.

[0021] In the figure: 1-feed barrel; 2-discharge barrel; 3-buffer tube; 4-upper plate assembly; 5-lower plate assembly; 6-upper pressure plate one; 7-upper pressure plate two; 8-upper circumferential air seal; 9-upper center air seal; 10-upper mounting cavity; 11-upper center cavity; 12-upper sealing liner; 13-upper rotary valve plate; 14-upper plate channel; 15-avoidance hole; 16-upper waist-shaped valve hole; 17-upper oil seal; 18-upper output shaft; 19-reducer; 20-lower output shaft; 21-lower oil seal; 22-lower center cavity; 23-lower center air seal; 24-fixed seat; 25-motor; 26-lower pressure plate one; 27-lower pressure plate two; 28-lower circumferential air seal; 29-lower mounting cavity; 30-lower waist-shaped valve hole; 31-lower sealing liner; 32-lower rotary valve plate; 33-lower plate channel. DETAILED DESCRIPTION

[0022] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0023] like Figures 1 to 3 As shown, the sealed unloading rotary valve comprises a feed cylinder 1 and a discharge cylinder 2 arranged in parallel from top to bottom, and the feed cylinder 1 and the discharge cylinder 2 are connected to each other. The feed barrel 1 is connected to an upper disc assembly 4, and an upper rotary valve plate 13 for opening and closing the material channel is rotated inside the upper disc assembly 4. The discharge barrel 2 is connected to a lower disc assembly 5, and a lower rotary valve plate 32 for opening and closing the material channel is rotatably arranged in the lower disc assembly 5. The upper rotary valve plate 13 and the lower rotary valve plate 32 work synchronously through the driving structure, and the upper rotary valve plate 13 and the lower rotary valve plate 32 alternately open and close the material channel.

[0024] The centers of the upper rotary valve plate 13 and the lower rotary valve plate 32 are offset from the centers of the feed cylinder 1 and the discharge cylinder 2 to achieve surface sealing. Compared with the traditional flap valve, which is line-sealed, the service life is longer.

[0025] The upper disk assembly 4 includes an upper disk shell, in which an annular upper mounting cavity 10 is provided. Two upper sealing liners 12 are fixedly connected to the upper mounting cavity 10 in parallel from top to bottom. An upper rotary valve plate 13 is rotatably arranged in the area between the two upper sealing liners 12 .

[0026] The upper sealing liner 12 and the lower sealing liner 31 are made of elastic materials. Even if the degree of wear is small, due to their elasticity, they can rebound and contact by utilizing the elastic energy to ensure the sealing effect.

[0027] An upper circumferential air seal 8 communicating with the upper mounting cavity 10 is connected to the outer wall of the upper disk shell to achieve sealing in cooperation with the upper sealing liner 12 to improve the sealing performance.

[0028] The upper plate shell is provided with an upper plate passage 14 , the two upper sealing liners 12 are provided with avoidance holes 15 connected with the upper plate passage 14 , and the upper rotary valve plate 13 is provided with an upper waist-shaped valve hole 16 for opening and closing the upper plate passage 14 .

[0029] The upper plate shell includes an upper pressure plate 1 6 and an upper pressure plate 2 7 which are arranged in parallel from top to bottom. The upper pressure plate 1 6 and the upper pressure plate 2 7 are fixedly connected by a bolt structure, and the feed barrel 1 is fixedly connected to the upper pressure plate 1 6 .

[0030] The lower disk assembly 5 includes a lower disk shell, in which a ring-shaped lower mounting cavity 29 is provided. Two lower sealing liners 31 are fixedly connected to the lower mounting cavity 29 in parallel from top to bottom. The lower rotary valve plate 32 is rotatably arranged in the area between the two lower sealing liners 31 .

[0031] The outer wall of the lower plate shell is connected with a lower circumferential air seal 28 which is in communication with the lower mounting cavity 29 to achieve sealing in cooperation with the lower sealing liner 31 and improve the sealing performance.

[0032] The lower plate housing is provided with a lower plate passage 33 , the two lower sealing liners 31 are provided with avoidance holes 15 connected with the lower plate passage 33 , and the lower rotary valve plate 32 is provided with a lower waist-shaped valve hole 30 for opening and closing the lower plate passage 33 .

[0033] The lower plate shell includes a lower pressure plate 1 26 and a lower pressure plate 27 which are arranged in parallel from top to bottom. The lower pressure plate 1 26 and the lower pressure plate 27 are fixedly connected by a bolt structure, and the discharge barrel 2 is fixedly connected to the lower pressure plate 27 .

[0034] The upper pressure plate 2 7 and the lower pressure plate 1 26 are connected through the buffer tube 3 .

[0035] The driving structure includes a reducer 19 disposed between the upper disk shell and the lower disk shell. The reducer 19 is coaxially provided with an upper output shaft 18 and a lower output shaft 20 . The upper output shaft 18 and the lower output shaft 20 are fixedly connected to the upper rotary valve plate 13 and the lower rotary valve plate 32 respectively.

[0036] A fixing seat 24 is fixedly connected between the upper pressure plate 2 7 and the lower pressure plate 1 26 , and a motor 25 is fixedly connected to the fixing seat 24 . The output shaft of the motor 25 is connected to the power input end of the reducer 19 .

[0037] An upper center cavity 11 is opened at the center position of the upper disk shell, and upper center air seals 9 connected to the upper center cavity 11 are respectively provided at the upper and lower ends of the upper disk shell, one is to clean the upper rotary valve plate 13, and the other is to prevent powder from entering the upper oil seal 17.

[0038] The upper output shaft 18 extends into the upper central cavity 11 and is connected to the upper rotary valve plate 13 . An upper oil seal 17 is provided between the upper output shaft 18 and the upper pressure plate 7 .

[0039] A lower center cavity 22 is provided at the center of the lower shell body, and lower center air seals 23 communicating with the lower center cavity 22 are provided at the upper and lower ends of the lower shell body, respectively, for cleaning the lower rotary valve plate 32 and preventing powder from entering the lower oil seal 21 .

[0040] The lower output shaft 20 extends into the lower central cavity 22 and is connected to the lower rotary valve plate 32 . A lower oil seal 21 is provided between the lower output shaft 20 and the lower pressure plate 27 .

[0041] The working principle of this device is: An upper rotary valve plate 13 and a lower rotary valve plate 32 are provided, and upper waist-shaped valve holes 16 and lower waist-shaped valve holes 30 are correspondingly provided at different positions of the upper rotary valve plate 13 and the lower rotary valve plate 32. The upper output shaft 18 and the lower output shaft 20 are driven by the reducer 19 to rotate synchronously; when the upper waist-shaped valve hole 16 is aligned with the upper plate channel 14, the material falls into the cache tube 3, and at the same time, the blind plate part of the lower rotary valve plate 32 is aligned with the lower plate channel 33 to prevent the lower airflow from being connected to the pipeline; as it rotates, when the blind plate part of the upper rotary valve plate 13 is aligned with the upper plate channel 14, the feed barrel 1 is blocked, and at this time, the lower waist-shaped valve hole 30 of the lower rotary valve plate 32 is just aligned with the lower plate channel 33, and at this time, the material in the cache tube 3 is discharged, and it is repeated in sequence to achieve air locking and material discharge.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A sealed unloading rotary valve, comprising a feed cylinder (1) and a discharge cylinder (2) arranged in parallel from top to bottom, wherein the feed cylinder (1) and the discharge cylinder (2) are connected to each other, and characterized in that: The feed barrel (1) is connected to an upper disc assembly (4), and an upper rotary valve plate (13) for opening and closing a material channel is rotatably disposed in the upper disc assembly (4). The discharge barrel (2) is connected to a lower disc assembly (5), and a lower rotary valve plate (32) for opening and closing a material passage is rotatably disposed in the lower disc assembly (5). The upper rotary valve plate (13) and the lower rotary valve plate (32) work synchronously via a driving structure, and the upper rotary valve plate (13) and the lower rotary valve plate (32) alternately open and close the material channel.

2. The sealed material discharge rotary valve according to claim 1, characterized in that: The centers of the upper rotary valve plate (13) and the lower rotary valve plate (32) are offset from the centers of the feed cylinder (1) and the discharge cylinder (2).

3. The sealed material discharge rotary valve according to claim 1, characterized in that: The upper disk assembly (4) comprises an upper disk shell, wherein an upper mounting cavity (10) arranged in an annular shape is provided in the upper disk shell, and two upper sealing liners (12) are fixedly connected to the upper mounting cavity (10) in parallel from top to bottom, and the upper rotary valve plate (13) is rotatably arranged in the area between the two upper sealing liners (12).

4. The sealed material discharge rotary valve according to claim 3, characterized in that: An upper circumferential air seal (8) in communication with the upper mounting cavity (10) is connected to the outer wall of the upper disk shell.

5. The sealed material discharge rotary valve according to claim 3, characterized in that: The upper plate shell is provided with an upper plate passage (14) through it, the two upper sealing liners (12) are provided with avoidance holes (15) connected to the upper plate passage (14), and the upper rotary valve plate (13) is provided with an upper waist-shaped valve hole (16) for opening and closing the upper plate passage (14).

6. The sealed material discharge rotary valve according to claim 3, characterized in that: The upper plate shell comprises an upper pressure plate one (6) and an upper pressure plate two (7) arranged in parallel from top to bottom, the upper pressure plate one (6) and the upper pressure plate two (7) are fixedly connected by a bolt structure, and the feed barrel (1) is fixedly connected to the upper pressure plate one (6).

7. The sealed material discharge rotary valve according to claim 6, characterized in that: The lower disk assembly (5) comprises a lower disk shell, wherein a lower mounting cavity (29) arranged in an annular shape is provided in the lower disk shell, and two lower sealing liners (31) are fixedly connected to the lower mounting cavity (29) in parallel from top to bottom, and the lower rotary valve plate (32) is rotatably arranged in an area between the two lower sealing liners (31).

8. The sealed material discharge rotary valve according to claim 7, characterized in that: A lower circumferential air seal (28) communicating with the lower mounting cavity (29) is connected to the outer wall of the lower disk shell.

9. The sealed material discharge rotary valve according to claim 7, characterized in that: The lower disk housing is provided with a lower disk channel (33) through-through, the two lower sealing liners (31) are provided with avoidance holes (15) connected to the lower disk channel (33), and the lower rotary valve plate (32) is provided with a lower waist-shaped valve hole (30) for opening and closing the lower disk channel (33).

10. The sealed material discharge rotary valve according to claim 7, characterized in that: The lower plate shell includes a lower pressure plate 1 (26) and a lower pressure plate 2 (27) arranged in parallel from top to bottom, the lower pressure plate 1 (26) and the lower pressure plate 2 (27) are fixedly connected by a bolt structure, the discharge barrel (2) is fixedly connected to the lower pressure plate 2 (27), and the upper pressure plate 2 (7) and the lower pressure plate 1 (26) are connected by a buffer tube (3).

Images