Pneumatic multi-way valve

Abstract

The utility model provides a pneumatic multi-way valve which comprises a valve body, a plurality of first air cylinders and switch pin shafts connected to piston rods of the first air cylinders. A plurality of liquid channels are arranged in the valve body, a partition plate is arranged in each liquid channel to divide the liquid channel into a first section and a second section which are independent from each other, a cavity is arranged in the valve body, and the cavity is communicated with the first section and the second section. The first air cylinder drives the switch pin shaft to ascend and descend in the cavity so as to control communication or isolation of the first section and the second section. According to the pneumatic multi-way valve, liquid inlet and outlet control and gas inlet and outlet control are integrated, communication or isolation of a liquid channel can be controlled through the first air cylinder, triple sealing is arranged, the sealing effect is good, communication of an air inlet channel and different air outlet channels can be controlled through the second air cylinder, practicability is high, and cost is low.

Description

Technical Field

[0001] The utility model relates to a pneumatic multi-way valve. Background Art

[0002] Controlling the flow of liquids and gases is a common problem in the industrial field. In the prior art, valves are used for control. Each liquid channel and gas channel is equipped with a valve for control, which is costly. How to combine multiple liquid channels and gas channels together for control is a direction worthy of research. Utility Model Content

[0003] The purpose of the utility model is to disclose a pneumatic multi-way valve, which integrates the control of liquid inlet and outlet and gas inlet and outlet. The connection or isolation of the liquid channel can be controlled by a first cylinder, and a triple seal is provided with a good sealing effect. The connection between the air inlet channel and different air outlet channels can be controlled by a second cylinder. The utility model has strong practicality and low cost.

[0004] To achieve the above-mentioned purpose, the utility model provides a pneumatic multi-way valve, including a valve body, a plurality of first cylinders, and a switch pin connected to the piston rod of the first cylinder; a plurality of liquid channels are arranged in the valve body, a partition is arranged in the liquid channel to divide the liquid channel into a first section and a second section which are independent of each other, a cavity is arranged in the valve body, the cavity is connected with the first section and the second section, and the first cylinder drives the switch pin to rise and fall in the cavity to control the connection or isolation between the first section and the second section.

[0005] In some embodiments, a first inclined surface and a second inclined surface are formed at the bottom of the switch pin shaft, a first slot is provided between the first inclined surface and the second inclined surface, a first sealing ring is provided in the first slot, a first sealing layer is coated on the first inclined surface, and a second sealing layer is coated on the second inclined surface; a third inclined surface and a sharp corner are formed on the inner wall of the cavity; the first sealing layer and the first sealing ring both squeeze the third inclined surface, and the second sealing layer squeezes the sharp corner to achieve isolation between the first section and the second section.

[0006] In some embodiments, the first and third bevels have the same bevel angle, both of which are 30°-60°, and the second bevel angle is 45°-80°.

[0007] In some embodiments, the inner wall of the cavity is further provided with a second slot, a second sealing ring is provided in the second slot, and the second sealing ring is squeezed by the switch pin shaft.

[0008] In some embodiments, the cavity includes a first cavity and a second cavity, the first cavity is connected to the first section, the second cavity is connected to the second section, and the switch pin shaft rises and falls in the first cavity.

[0009] In some embodiments, the first section is a liquid inlet section, and the second section is a liquid outlet section.

[0010] In some embodiments, the liquid channel is further connected to a pressure gauge.

[0011] In some embodiments, it also includes a second cylinder and a switching pin connected to the piston rod of the second cylinder; the valve body is provided with a switching channel, an air intake channel and two air outlet channels, the switching pin is provided with a gas transmission channel for connecting the air intake channel and the air outlet channel, and the second cylinder drives the switching pin to move in the switching channel to control the connection between the air intake channel and any one of the air outlet channels.

[0012] In some embodiments, the gas delivery channel includes a gas chamber, two air inlet holes connected to the gas chamber, and two air outlet holes connected to the gas chamber; the air inlet holes are connected to the air inlet channel, and the air outlet holes are connected to the air outlet channel.

[0013] In some embodiments, a third slot is provided on the switching pin shaft, a third sealing ring is provided in the third slot, and the third sealing ring is squeezed by the inner wall of the switching channel.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the pneumatic multi-way valve provided by the utility model integrates the control of liquid inlet and outlet and gas inlet and outlet, and can control the connection or isolation of the liquid channel through the first cylinder, and is provided with triple seals with good sealing effect, and can control the connection of the air inlet channel and different air outlet channels through the second cylinder, so it has strong practicality and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a top view of the pneumatic multi-way valve shown in the utility model;

[0016] Figure 2 It is a front view of the pneumatic multi-way valve shown in the utility model;

[0017] Figure 3 for Figure 2 Middle AA section view;

[0018] Figure 4 for Figure 2 Middle BB section view;

[0019] Figure 5 for Figure 3 Enlarged view of the center labeled C. DETAILED DESCRIPTION

[0020] The present invention is described in detail below in conjunction with the various embodiments shown in the accompanying drawings, but it should be noted that these embodiments are not limitations of the present invention, and any equivalent transformations or substitutions in functions, methods, or structures made by ordinary technicians in the field based on these embodiments are all within the scope of protection of the present invention.

[0021] like Figure 1-5 The pneumatic multi-way valve shown comprises a valve body 1, three first cylinders 22, and a switch pin 24 connected to the piston rods 23 of the first cylinders 22. The first cylinders 22 are connected to the valve body 1 through a bracket 21.

[0022] The valve body 1 is provided with three liquid channels 10, and the liquid channels 10 are also connected to a pressure gauge 5 for displaying water pressure. A partition 8 is provided in the liquid channel 10 to divide the liquid channel 10 into an independent first section 11 and a second section 12. The first section 11 is a liquid inlet section, and the second section 12 is a liquid outlet section. The first section 11 is connected to a liquid inlet joint 111, and the second section 12 is connected to a liquid outlet joint 121.

[0023] The valve body 1 is provided with a cavity, which is connected to the first section 11 and the second section 12. Specifically, the cavity includes a first cavity 41 and a second cavity 42, the first cavity 41 is connected to the first section 11, the second cavity 42 is connected to the second section 12, and the switch pin shaft 24 rises and falls in the first cavity 41.

[0024] The bottom of the switch pin 24 is formed with a first inclined surface 13 and a second inclined surface 15, a first slot 14 is provided between the first inclined surface 13 and the second inclined surface 15, a first sealing ring 61 is provided in the first slot 14, a first sealing layer 131 is coated on the first inclined surface 13, and a second sealing layer 151 is coated on the second inclined surface 15. A third inclined surface 81 and a sharp corner 82 are formed on the inner wall of the first cavity 41.

[0025] The first sealing layer 131 squeezes the third inclined surface 81 to play a sealing role, preventing the liquid from flowing from the first section 11 into the second cavity 42. The first inclined surface 13 and the third inclined surface 81 have the same angle of 45°, so that the first sealing layer 131 can be closely attached to the third inclined surface 81, the sealing surface is evenly stressed, and the sealing effect is good. In addition, the third inclined surface 81 has an upward pressing effect on the first sealing layer 131, which can prevent the first sealing layer 131 from loosening on the first inclined surface 13, and tighten the position of the first sealing layer 131.

[0026] The first sealing ring 61 squeezes the third inclined surface 81, playing a double sealing role, which can prevent liquid from flowing from the first section 11 into the second cavity 42. The angle of the second inclined surface 15 is 60°, and the second sealing layer 151 squeezes the sharp corner 82, playing a point sealing role, which can prevent liquid from flowing from the first section 11 into the second cavity 42. In addition, the sharp corner 82 has an upward pressing effect on the second sealing layer 151, which can prevent the second sealing layer 151 from loosening on the second inclined surface 15, and tighten the position of the second sealing layer 151. The triple sealing setting can ensure the sealing effect of the switch pin 24.

[0027] The inner wall of the cavity is further provided with a second groove, in which a second sealing ring 62 is provided. The second sealing ring 62 is squeezed by the switch pin shaft 24 to play a sealing role.

[0028] The first cylinder 22 drives the switch pin 24 to rise and fall in the first cavity 41 to control the connection or isolation of the first section 11 and the second section 12. Specifically, the first cylinder 22 drives the piston rod 23 to extend, the switch pin 24 to descend, the first sealing layer 131 and the first sealing ring 61 of the switch pin 24 squeeze the third inclined surface 81, and the second sealing layer 151 squeezes the sharp corner 82, so that the first section 11 and the second cavity 42 are isolated, and the liquid in the first section 11 does not flow into the second section 12. The first cylinder 22 drives the switch pin 24 to retract, the switch pin 24 to rise, the first sealing layer 131 and the first sealing ring 61 of the switch pin 24 are separated from the third inclined surface 81, and the second sealing layer 151 is separated from the sharp corner 82, so that the first section 11, the first cavity 41, the second cavity 42, and the second section 12 are connected in sequence, and the liquid in the first section 11 can flow into the second section 12.

[0029] The valve body 1 further comprises a second cylinder 32 and a switching pin 33 connected to a piston rod 321 of the second cylinder 32. The second cylinder 32 is connected to the valve body 1 through a bracket 31. The valve body 1 is provided with a switching channel (not shown), an air inlet channel 71 and two air outlet channels 72. The air inlet channel 71 is connected to an air inlet connector 711, and the air outlet channel 72 is connected to an air outlet connector 721.

[0030] The switching pin shaft 32 is provided with a gas transmission channel for connecting the air inlet channel 71 and the air outlet channel 72. The gas transmission channel includes a gas chamber 34, two air inlet holes 35 connected to the gas chamber 34, and two air outlet holes 36 connected to the gas chamber 34. The air inlet holes 35 are connected to the air inlet channel 71, and the air outlet holes 36 are connected to the air outlet channel 72.

[0031] The second cylinder 32 drives the switching pin 33 to move in the switching channel to control the connection between the intake channel 71 and any one of the outlet channels 72. Figure 4As shown, the second cylinder 32 drives the piston rod 321 to extend, the switch pin 33 to extend, one air inlet 35 is connected to the air inlet channel 71, and one air outlet 36 is connected to the air outlet channel 72. The second cylinder 32 drives the piston rod 321 to retract, the switch pin 33 is reset, another air inlet 35 is connected to the air inlet channel 71, and another air outlet 36 is connected to another air outlet channel 72.

[0032] The switching pin shaft 33 is provided with a third clamping groove, and a third sealing ring 63 is provided in the third clamping groove. The third sealing ring 63 is squeezed by the inner wall of the switching channel to play a sealing role.

[0033] The series of detailed descriptions listed above are only specific descriptions of feasible implementation methods of the utility model. They are not intended to limit the protection scope of the utility model. Any equivalent implementation methods or changes that do not deviate from the technical spirit of the utility model should be included in the protection scope of the utility model.

[0034] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. Pneumatic multi-way valve, characterized in that: The invention comprises a valve body (1), a plurality of first cylinders (22), and a switch pin shaft (24) connected to a piston rod (23) of the first cylinder (22); the valve body (1) is provided with a plurality of liquid channels (10), the liquid channels (10) are provided with a partition plate (8) to divide the liquid channels (10) into independent first sections (11) and second sections (12); the valve body (1) is provided with a cavity, the cavity is connected to the first section (11) and the second section (12), and the first cylinder (22) drives the switch pin shaft (24) to rise and fall in the cavity to control the connection or isolation between the first section (11) and the second section (12).

2. The pneumatic multi-way valve according to claim 1, characterized in that: A first inclined surface (13) and a second inclined surface (15) are formed at the bottom of the switch pin shaft (24); a first slot (14) is provided between the first inclined surface (13) and the second inclined surface (15); a first sealing ring (61) is provided in the first slot (14); a first sealing layer (131) is coated on the first inclined surface (13); and a second sealing layer (151) is coated on the second inclined surface (15); a third inclined surface (81) and a sharp corner (82) are formed on the inner wall of the cavity; the first sealing layer (131) and the first sealing ring (61) both squeeze the third inclined surface (81), and the second sealing layer (151) squeezes the sharp corner (82) to achieve isolation between the first section (11) and the second section (12).

3. The pneumatic multi-way valve according to claim 2, characterized in that: The first inclined plane (13) and the third inclined plane (81) have the same angle, both of which are 30°-60°, and the angle of the second inclined plane (15) is 45°-80°.

4. The pneumatic multi-way valve according to claim 2, characterized in that: The inner wall of the cavity is also provided with a second slot, in which a second sealing ring (62) is provided, and the second sealing ring (62) is squeezed by the switch pin shaft (24).

5. The pneumatic multi-way valve according to claim 1, characterized in that: The cavity comprises a first cavity (41) and a second cavity (42); the first cavity (41) is connected to the first section (11); the second cavity (42) is connected to the second section (12); and the switch pin shaft (24) rises and falls in the first cavity (41).

6. The pneumatic multi-way valve according to claim 5, characterized in that: The first section (11) is a liquid inlet section, and the second section (12) is a liquid outlet section.

7. The pneumatic multi-way valve according to claim 1, characterized in that: The liquid channel (10) is also connected to a pressure gauge (5).

8. The pneumatic multi-way valve according to claim 1, characterized in that: The valve body (1) further comprises a second cylinder (32) and a switching pin (33) connected to a piston rod (321) of the second cylinder (32); the valve body (1) is provided with a switching channel, an air intake channel (71) and two air outlet channels (72); the switching pin (33) is provided with a gas transmission channel for connecting the air intake channel (71) and the air outlet channel (72); the second cylinder (32) drives the switching pin (33) to move in the switching channel to control the connection between the air intake channel (71) and any one of the air outlet channels (72).

9. The pneumatic multi-way valve according to claim 8, characterized in that: The gas transfer channel comprises a gas chamber (34), two gas inlet holes (35) connected to the gas chamber (34), and two gas outlet holes (36) connected to the gas chamber (34); the gas inlet holes (35) are connected to the gas inlet channel (71), and the gas outlet holes (36) are connected to the gas outlet channel (72).

10. The pneumatic multi-way valve according to claim 8, characterized in that: The switching pin shaft (33) is provided with a third clamping groove, a third sealing ring (63) is provided in the third clamping groove, and the third sealing ring (63) is squeezed by the inner wall of the switching channel.

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