Multi-channel gas continuous distribution rotary valve capable of avoiding leakage

Abstract

The multi-channel gas continuous distribution rotary valve comprises a valve switching seat, a valve base is installed at the bottom of the valve switching seat, an installation groove is formed in the bottom of the valve switching seat, meanwhile, a driving shaft is fixed in the installation groove in a threaded connection mode, an air inlet is formed in the surface of the right side of the valve switching seat, and an air outlet is formed in the surface of the right side of the valve switching seat. The end, away from the valve switching base, of the air inlet pipe communicates with the air outlet end of an external air pump, and a sealing cylinder is fixedly installed at the bottom of the air inlet. According to the multi-channel gas continuous distribution rotary valve capable of avoiding leakage, the stepping motor drives the valve switching seat to rotate by 90 degrees, so that the sealing barrel rotates to be separated from the first gas distribution channel and enter the position opposite to the gas inlet of the second gas distribution channel, gas exchange work is completed, during gas exchange, the sealing barrel is extruded and deformed between the valve switching seat and the valve base, and the sealing barrel is pressed and deformed. And air leakage is avoided, the direction of the air channel is changed, the sealing performance is high, and air leakage is avoided.

Description

Technical Field

[0001] The utility model relates to the field of rotary valves, in particular to a multi-channel gas continuous distribution rotary valve which can avoid leakage. Background Art

[0002] The so-called rotary valve is currently used as an ash discharge valve or inlet and outlet control valve in the ash conveying system of thermal power plants, and in the pipelines of high-wear media discharge in metallurgy, mining and other industries. In recent years, ceramic rotary valves with valve seats and gates made of wear-resistant ceramic materials have gradually been accepted by the market. With the development of science and technology, there are more and more ceramic rotary valves, and their functions are becoming more and more powerful. Among them, there are also many high-sealing ceramic rotary valves;

[0003] The rotary valve switches the direction of the gas path by changing the time zone by rotating the angle;

[0004] The function of the rotary valve is to achieve uniform feeding of the production line and air lock of gas delivery by controlling the logistics, ensuring stable air pressure and normal discharge of materials;

[0005] When the rotary valve switches the direction of the gas path by changing the time zone through the rotation angle, the sealing is insufficient and the gas in the cavity may leak out along the airway; the rotary valve is prone to air leakage. Utility Model Content

[0006] The utility model aims to provide a multi-channel gas continuous distribution rotary valve which can avoid leakage, so as to solve the defects mentioned in the above background technology.

[0007] In order to achieve the above-mentioned purpose, a multi-channel gas continuous distribution rotary valve for avoiding leakage is provided, comprising a valve switching seat, a valve base is installed at the bottom of the valve switching seat, and a mounting groove is provided at the bottom of the valve switching seat, and a driving shaft is screwed and fixed inside the mounting groove, and an air inlet is provided on the right surface of the valve switching seat, an air inlet pipe is screwed and fixed at the air inlet, and one end of the air inlet pipe away from the valve switching seat is connected to the air outlet end of an external air pump, and a sealing cylinder is fixedly installed at the bottom of the air inlet;

[0008] A first gas distribution channel is opened inside the valve base, a second gas distribution channel is opened on one side of the first gas distribution channel, a third gas distribution channel is opened on one side of the second gas distribution channel, and a fourth gas distribution channel is opened on one side of the third gas distribution channel.

[0009] Preferably, the valve switching seat is a circular structure made of metal material, and the air inlet is eccentrically arranged on the valve switching seat.

[0010] Preferably, the sealing cylinder is a cylindrical structure made of rubber material, and the inner diameter of the sealing cylinder is larger than the diameter of the first gas distribution channel.

[0011] Preferably, the cross-sections of the first gas distribution channel, the second gas distribution channel, the third gas distribution channel and the fourth gas distribution channel are all "L"-shaped, and exhaust pipes are fixedly installed on the inner walls of the ends of the first gas distribution channel, the second gas distribution channel, the third gas distribution channel and the fourth gas distribution channel, and the angle between two adjacent groups of gas distribution channels is 90°.

[0012] Preferably, an installation area is opened on the valve base, and a fixing seat is screwed on the inner wall of the installation area. At the same time, the fixing seat is a "U"-shaped structure made of metal material. The bottom of the fixing seat is screwed to fix the stepper motor, and the output shaft of the stepper motor is fixedly connected to the drive shaft.

[0013] Preferably, the diameters of the valve switching seat and the valve base are consistent, and four groups of connecting seats are evenly installed on the outer side of the bottom of the valve switching seat. At the same time, the connecting seat is set in an "L" shape, and limit blocks are installed on the bottom of the four groups of connecting seats.

[0014] Preferably, the size of the limit block is matched with that of the limit track, and the limit track is fixedly mounted on the outer side wall of the valve base in an annular shape, and the limit block is slidably arranged inside the limit track.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The stepper motor drives the valve switching seat to rotate 90°, so that the sealing cylinder rotates out of the first gas distribution channel and enters the position opposite to the air inlet of the second gas distribution channel to complete the air exchange. During the air exchange, the sealing cylinder is squeezed and deformed between the valve switching seat and the valve base, and no air leakage occurs. The airway direction change is completed, and the sealing is strong and no air leakage occurs.

[0017] 2. The angle between two adjacent groups of gas distribution channels is 90°; the output shaft of the stepper motor can be rotated step by step, and the angle of each rotation of the driving valve switching seat is 90°, so that the sealing cylinder can be separated from one group of gas distribution channels and move to the top of the air inlet of another group of gas distribution channels;

[0018] 3. When the valve switching seat is driven to perform step rotation, the limit block at its bottom is slidably arranged inside the limit track, which can limit and guide the valve switching seat during movement, thereby ensuring the stability of the valve switching seat during movement and preventing it from tilting. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front view of the structure of the utility model;

[0020] Figure 2 The utility model structure Figure 1 A top-down cross-sectional view of

[0021] Figure 3 This is a schematic diagram of the structural valve switching seat of the utility model;

[0022] Figure 4 This is a schematic diagram of the valve base of the utility model structure.

[0023] Numbers in the figure: 1. valve switching seat; 2. mounting groove; 3. drive shaft; 4. air inlet pipe; 5. air inlet; 6. sealing cylinder; 7. connecting seat; 8. limit block; 9. valve base; 10. first gas distribution channel; 101. second gas distribution channel; 102. third gas distribution channel; 103. fourth gas distribution channel; 11. installation area; 12. stepper motor; 13. fixing seat; 14. limit track; 15. exhaust pipe. DETAILED DESCRIPTION

[0024] See also Figure 1-4 The utility model provides a multi-channel gas continuous distribution rotary valve for avoiding leakage, comprising a valve switching seat 1, a valve base 9 is installed at the bottom of the valve switching seat 1, and a mounting groove 2 is provided at the bottom of the valve switching seat 1, and a driving shaft 3 is screwed and fixed inside the mounting groove 2, and an air inlet 5 is provided on the right surface of the valve switching seat 1, an air inlet pipe 4 is screwed and fixed at the air inlet 5, and one end of the air inlet pipe 4 away from the valve switching seat 1 is connected to the air outlet end of the external air pump, and a sealing cylinder 6 is fixedly installed at the bottom of the air inlet 5;

[0025] A first gas distribution channel 10 is opened inside the valve base 9 , and a second gas distribution channel 101 is opened on one side of the first gas distribution channel 10 . Meanwhile, a third gas distribution channel 102 is opened on one side of the second gas distribution channel 101 , and a fourth gas distribution channel 103 is opened on one side of the third gas distribution channel 102 .

[0026] Working principle: When in use, the gas enters the interior of the first gas distribution channel 10 through the sealing tube 6 from the air inlet 5. When the gas needs to change the ventilation direction, the external switch of the stepper motor 12 is started, and the stepper motor 12 drives the valve switching seat 1 to rotate 90°, so that the sealing tube 6 rotates out of the first gas distribution channel 10 and enters the position opposite to the air inlet of the second gas distribution channel 101 to complete the ventilation work. When ventilating, the sealing tube 6 is squeezed and deformed between the valve switching seat 1 and the valve base 9, and no leakage occurs. The airway direction is changed, and the sealing is strong and no leakage occurs.

[0027] As a preferred implementation, the valve switching seat 1 is a circular structure made of metal material, and the air inlet 5 is eccentrically arranged on the valve switching seat 1 .

[0028] The sealing tube 6 is a cylindrical structure made of rubber material, and the inner diameter of the sealing tube 6 is greater than the diameter of the first gas distribution channel 10 .

[0029] like Figure 1-4 As shown: the sealing cylinder 6 is arranged between the valve switching seat 1 and the valve base 9. When the bottom of the sealing cylinder 6 is arranged just above the valve base 9, the sealing cylinder 6 is squeezed and no air leakage occurs.

[0030] As a preferred embodiment, the cross-sections of the first gas distribution channel 10, the second gas distribution channel 101, the third gas distribution channel 102 and the fourth gas distribution channel 103 are all "L"-shaped, and the exhaust pipe 15 is fixedly installed on the inner wall of the end of the first gas distribution channel 10, the second gas distribution channel 101, the third gas distribution channel 102 and the fourth gas distribution channel 103, and the angle between two adjacent groups of gas distribution channels is 90°.

[0031] An installation area 11 is opened on the valve base 9, and a fixing seat 13 is screwed on the inner wall of the installation area 11. At the same time, the fixing seat 13 is a "U"-shaped structure made of metal material. The bottom of the fixing seat 13 is screwed to fix the stepper motor 12, and the output shaft of the stepper motor 12 is fixedly connected to the drive shaft 3.

[0032] The angle between two adjacent groups of gas distribution channels is 90°; the output shaft of the stepper motor 12 can be rotated in steps, and the driving valve switching seat 1 rotates by 90° each time, so that the sealing tube 6 can be detached from one group of gas distribution channels and move to the top of the air inlet of another group of gas distribution channels.

[0033] As a preferred embodiment, the diameters of the valve switching seat 1 and the valve base 9 are consistent, and four groups of connecting seats 7 are evenly installed on the outer side of the bottom of the valve switching seat 1. At the same time, the connecting seat 7 is set in an "L" shape, and limit blocks 8 are installed at the bottom of the four groups of connecting seats 7.

[0034] The size of the limiting block 8 matches that of the limiting track 14 , and the limiting track 14 is fixedly mounted on the outer side wall of the valve base 9 in an annular shape, and the limiting block 8 is slidably arranged inside the limiting track 14 .

[0035] like Figure 1-4 As shown: when the valve switching seat 1 is driven to perform step rotation, the limit block 8 at its bottom is slidably set inside the limit track 14, which can limit and guide the valve switching seat 1 during movement, ensuring the stability of the valve switching seat 1 during movement and preventing it from tilting.

Claims

1. A multi-channel gas continuous distribution rotary valve to avoid leakage, comprising a valve switching seat (1), characterized in that: A valve base (9) is installed at the bottom of the valve switching seat (1), and a mounting groove (2) is provided at the bottom of the valve switching seat (1), and a driving shaft (3) is screwed and fixed inside the mounting groove (2), and an air inlet (5) is provided on the right side surface of the valve switching seat (1), an air inlet pipe (4) is screwed and fixed at the air inlet (5), and one end of the air inlet pipe (4) away from the valve switching seat (1) is connected to the air outlet end of an external air pump, and a sealing cylinder (6) is fixedly installed at the bottom of the air inlet (5); A first gas distribution channel (10) is opened inside the valve base (9), and a second gas distribution channel (101) is opened on one side of the first gas distribution channel (10), while a third gas distribution channel (102) is opened on one side of the second gas distribution channel (101), and a fourth gas distribution channel (103) is opened on one side of the third gas distribution channel (102).

2. A multi-channel gas continuous distribution rotary valve for avoiding leakage according to claim 1, characterized in that: The valve switching seat (1) is a circular structure made of metal material, and the air inlet (5) is eccentrically arranged on the valve switching seat (1).

3. A multi-channel gas continuous distribution rotary valve for avoiding leakage according to claim 1, characterized in that: The sealing cylinder (6) is a cylindrical structure made of rubber material, and the inner diameter of the sealing cylinder (6) is greater than the diameter of the first gas distribution channel (10).

4. The multi-channel gas continuous distribution rotary valve for avoiding leakage according to claim 1, characterized in that: The cross-sections of the first gas distribution channel (10), the second gas distribution channel (101), the third gas distribution channel (102) and the fourth gas distribution channel (103) are all arranged in an "L" shape, and exhaust pipes (15) are fixedly installed on the inner walls of the ends of the first gas distribution channel (10), the second gas distribution channel (101), the third gas distribution channel (102) and the fourth gas distribution channel (103), and the angle between two adjacent groups of gas distribution channels is 90°.

5. The multi-channel gas continuous distribution rotary valve for avoiding leakage according to claim 1, characterized in that: The valve base (9) is provided with an installation area (11), and a fixing seat (13) is screwed on the inner wall of the installation area (11), and the fixing seat (13) is a "U"-shaped structure made of metal material. The bottom of the fixing seat (13) is screwed to fix the stepper motor (12), and the output shaft of the stepper motor (12) is fixedly connected to the drive shaft (3).

6. The multi-channel gas continuous distribution rotary valve for avoiding leakage according to claim 1, characterized in that: The valve switching seat (1) and the valve base (9) have the same diameter, and four groups of connecting seats (7) are evenly installed on the outer side of the bottom of the valve switching seat (1). At the same time, the connecting seats (7) are arranged in an "L" shape, and limit blocks (8) are installed on the bottom of the four groups of connecting seats (7).

7. A multi-channel gas continuous distribution rotary valve for avoiding leakage according to claim 6, characterized in that: The size of the limit block (8) is adapted to that of the limit track (14), and the limit track (14) is fixedly mounted on the outer wall of the valve base (9) in an annular shape, and the limit block (8) is slidably arranged inside the limit track (14).

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