Multi-connected pneumatic valve group

Abstract

The utility model relates to a multi-gang pneumatic valve group, which comprises air valve components, threaded rods, shaft sleeves, adapter covers and end covers, more than two groups of air valve components are connected in series through the threaded rods, the shaft sleeves are hermetically connected to the joints of the adjacent air valve components, two ends of the threaded rods are in threaded connection with the adapter covers and the end covers, the adapter covers are provided with liquid inlets, and the end covers are provided with liquid outlets. The air valve assembly comprises a valve seat, a valve deck, a sealing sleeve and a valve element. The main purpose of the utility model is that a plurality of groups of air valve assemblies are connected in series through a threaded rod, a medium flows in from a liquid inlet, the valve seat is externally connected with an air source through an air hole, and the movement of the valve core is pneumatically controlled, so that the on-off of each group of air valve assemblies is automatically controlled, and the independent control of a plurality of groups of pneumatic valve groups is realized; the control assemblies are concentrated in one area, multiple sets of control valves do not need to be installed on pipeline branches, the pneumatic valves are managed and maintained in a centralized mode, and convenience is provided for follow-up maintenance of the hydraulic system.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic valves, and particularly relates to a multi-connected pneumatic valve group. Background Art

[0002] In a production line, in order to achieve multiple sets of actions such as clamping, rotating, and flipping at different production stations, corresponding pneumatic valves are usually installed at the pipeline branches of a hydraulic system. The flow direction of a liquid medium is controlled by the on-off state of the pneumatic valves, so as to achieve corresponding actions. Since the pneumatic valves are independently distributed on each main pipeline, when problems such as action jamming and liquid leakage occur in the pneumatic valves, the troubleshooting points are too scattered, which is not conducive to management and maintenance. Content of the Utility Model

[0003] In order to overcome the deficiencies of the background art, the technical solution adopted by the utility model is: a multi-connected pneumatic valve group, including a valve assembly, a threaded rod, a bushing, an adapter cover, and an end cover. Two or more groups of valve assemblies are connected in series through the threaded rod, and a bushing is hermetically connected at the connection of adjacent valve assemblies. The two ends of the threaded rod are threadedly connected with the adapter cover and the end cover. The adapter cover is provided with a liquid inlet. The valve assembly includes a valve seat, a valve cover, a sealing sleeve, and a valve core. The valve seat is fixedly connected with the sealing sleeve through the valve cover. An air chamber for slidably connecting the valve core is formed between the sealing sleeve and the valve seat. The valve seat is provided with air holes for controlling the up and down movement of the valve core. The two sides of the valve core are sleeved with the valve seat and the sealing sleeve. The bottom of the valve seat is provided with a tee chamber connected to the liquid inlet. The valve cover and the sealing sleeve are combined to form a liquid outlet. The valve core is provided with an inner cavity for communicating the tee chamber and the liquid outlet. And a sealing portion for blocking the valve core is provided between the inner cavity and the liquid outlet on the valve cover.

[0004] Adopting the above technical solution, five groups of valve assemblies are connected in series through the threaded rod. The medium flows in from the liquid inlet. The valve seat is externally connected to a gas source through the air holes, so as to control the up and down movement of the valve core relative to the valve seat. When the valve core leaves the sealing portion, the medium at the liquid inlet sequentially passes through the tee chamber and the inner cavity and flows out from the liquid outlet. When the valve core abuts against the sealing portion, the valve assembly is in an off state. The control components are concentrated in one area, realizing independent control of multiple groups of pneumatic valve groups. There is no need to install multiple groups of control valves on the pipeline branches, reducing the probability of liquid leakage and facilitating subsequent maintenance of the hydraulic pipeline.

[0005] The utility model is further arranged such that the valve core is provided with a piston portion. The air chamber is divided into an upper air chamber and a lower air chamber by the piston portion. The valve seat is provided with air holes for externally connecting to a gas source in both the upper air chamber and the lower air chamber. A spring is provided between the valve seat and the piston portion.

[0006] Furthermore, the valve seat is provided with a circular ring portion. The two ends of the valve core are respectively sleeved inside the circular ring portion and the sealing sleeve. And the circular ring portion / sealing sleeve is hermetically connected with the valve core through a sealing ring. The spring is sleeved outside the circular ring portion.

[0007] With the above technical solution, when the gas source is input into the upper air chamber, the air pressure on the upper side of the piston part increases, so as to control the valve core to move downward through the piston part. At this time, the spring is compressed and the valve core is in the open position. When the air pressure on the upper side of the piston part decreases, the valve core is automatically and quickly closed through the reset of the spring. Only one-way control of the gas source can achieve on-off, reducing the manufacturing cost.

[0008] The present utility model is further configured such that the valve seat is provided with a stepped portion and a threaded portion, the sealing sleeve is provided with an outer ring portion corresponding to the stepped portion, the valve cover is threadedly connected to the valve seat through the threaded portion, and the outer ring portion is clamped between the valve cover and the valve seat.

[0009] Furthermore, the valve cover is integrally cast with a sealing portion. The bottom of the sealing portion is provided with a rubber seat and a riveting member for riveting the rubber seat. One end of the valve core abuts against the rubber seat.

[0010] With the above technical solution, four connecting ribs distributed in a rectangular shape are provided between the valve cover and the sealing portion, so that the upper and lower sides of the valve cover are in a normally connected state. The sealing effect between the valve core and the valve cover is improved through the rubber seat, thereby avoiding the occurrence of liquid leakage.

[0011] The present utility model is further configured such that four groups of mounting blocks are provided on the outer side of the valve seat. The threaded rod passes through the valve seat through the mounting blocks. The adapter cover is provided with a threaded hole, and the end cover is provided with a through hole coaxially distributed with the threaded hole. One end of the threaded rod is threadedly connected to the threaded hole, and the other end is bolted to the through hole.

[0012] Furthermore, the valve seat is provided with clamping grooves at both ends of the three-way cavity. The shaft sleeve is embedded in the clamping grooves, and a sealing groove for installing a sealing ring is formed between the shaft sleeve and the clamping grooves.

[0013] Furthermore, a locking hole for installing a locking screw is provided on one side of the adapter cover / end cover at the threaded hole / through hole.

[0014] With the above technical solution, the inner diameter of the three-way cavity is the same as the inner diameter of the shaft sleeve, and the depth of the clamping groove is equal to half of the height of the shaft sleeve, so that the valve seats are symmetrically distributed at both ends of the shaft sleeve. The shaft sleeve is sealingly connected to the valve seat through a sealing ring, avoiding leakage at the connection of adjacent valve seats.

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

[0016] 1. A plurality of gas valve components are connected in series through a threaded rod. The medium flows in from the liquid inlet. The valve seat is externally connected to the gas source through an air hole. The movement of the valve core is controlled pneumatically, so as to meet the automatic control of the on-off of each gas valve component and realize the independent control of a plurality of pneumatic valve groups;

[0017] 2. The control components are concentrated in one area, eliminating the need to install multiple groups of control valves on the pipeline branches, enabling centralized maintenance and management of the pneumatic valves, and facilitating subsequent maintenance of the hydraulic system.

[0018] The following further describes the embodiments of the present invention with reference to the accompanying drawings. Description of the Drawings

[0019] Figure 1 is the front view of the present invention;

[0020] Figure 2 of the present invention Figure 1 is the cross-sectional view of the view from direction A in;

[0021] Figure 3 of the present invention Figure 2 is the enlarged partial view of the view from direction B in;

[0022] Figure 4 of the present invention Figure 2 is the enlarged partial view of the view from direction C in;

[0023] Figure 5 of the present invention Figure 1 is the enlarged partial view of the view from direction D in;

[0024] Figure 6 is the front view of the adapter cover of the present invention;

[0025] Wherein: 1 - pneumatic valve assembly, 2 - threaded rod, 3 - bushing, 4 - adapter cover, 5 - end cover, 6 - valve seat, 7 - valve cover, 8 - sealing sleeve, 9 - valve core, 10 - spring, 11 - sealing part, 12 - piston part, 13 - ring part, 14 - step part, 15 - threaded part, 16 - outer ring part, 17 - rubber seat, 18 - rivet, 19 - mounting block, 20 - threaded hole, 21 - through hole, 22 - clamping groove, 23 - sealing groove, 24 - locking hole, 100 - air chamber, 101 - air hole, 102 - upper air chamber, 103 - lower air chamber, 110 - liquid inlet, 120 - tee chamber, 130 - inner cavity, 140 - liquid outlet; Detailed Embodiments

[0026] As Figure 1 , 2As shown in the figure, this embodiment provides a multi-connected pneumatic valve group, which includes a pneumatic valve assembly 1, a threaded rod 2, a bushing 3, an adapter cover 4, and an end cover 5. Five groups of pneumatic valve assemblies 1 are connected in series through the threaded rod 2, and a bushing 3 is hermetically connected to the connection part between adjacent pneumatic valve assemblies 1. The two ends of the threaded rod 2 are threadedly connected with the adapter cover 4 and the end cover 5. The adapter cover 4 is provided with a liquid inlet 110. The pneumatic valve assembly 1 includes a valve seat 6, a valve cover 7, a sealing sleeve 8, and a valve core 9. The valve seat 6 is fixedly connected with a sealing sleeve 8 through the valve cover 7. An air chamber 100 for slidably connecting the valve core 9 is formed between the sealing sleeve 8 and the valve seat 6. The valve seat 6 is provided with air holes 101 for controlling the up and down movement of the valve core 9. The two sides of the valve core 9 are sleeved with the valve seat 6 and the sealing sleeve 8. The bottom of the valve seat 6 is provided with a tee chamber 120 connected to the liquid inlet 110. The valve cover 7 and the sealing sleeve 8 are combined to form a liquid outlet 140. The valve core 9 is provided with an inner cavity 130 for communicating the tee chamber 120 and the liquid outlet 140. And a sealing part 11 for blocking the valve core 9 is provided between the valve cover 7 and the liquid outlet 140 in the inner cavity 130.

[0027] Combined with Figure 3 As shown in the figure, in this embodiment, the valve core 9 is provided with a piston part 12. The air chamber 100 is divided into an upper air chamber 102 and a lower air chamber 103 through the piston part 12. The valve seat 6 is provided with air holes 101 for connecting to an external air source in both the upper air chamber 102 and the lower air chamber 103. A spring 10 is provided between the valve seat 6 and the piston part 12. The valve seat 6 is provided with a circular ring part 13. The two ends of the valve core 9 are respectively sleeved inside the circular ring part 13 and the sealing sleeve 8. And the circular ring part 13 / sealing sleeve 8 is hermetically connected to the valve core 9 through a sealing ring. The spring 10 is sleeved outside the circular ring part 13.

[0028] Combined with Figure 4 As shown in the figure, in this embodiment, the valve seat 6 is provided with a step part 14 and a threaded part 15. The sealing sleeve 8 is provided with an outer ring part 16 corresponding to the step part 14. The valve cover 7 is threadedly connected to the valve seat 6 through the threaded part 15. And the outer ring part 16 is clamped between the valve cover 7 and the valve seat 6. The valve cover 7 is integrally cast with a sealing part 11. A rubber seat 17 is provided at the bottom of the sealing part 11, and a riveting part 18 for riveting the rubber seat 17. One end of the valve core 9 abuts against the rubber seat 17.

[0029] In this embodiment, four groups of mounting blocks 19 are provided on the outside of the valve seat 6. The threaded rod 2 connects the valve seat 6 in series through the mounting blocks 19. The adapter cover 4 is provided with a threaded hole 20. The end cover 5 is provided with a through hole 21 coaxially distributed with the threaded hole 20. One end of the threaded rod 2 is threadedly connected to the threaded hole 20, and the other end is bolted to the through hole 21. The valve seat 6 is provided with clamping grooves 22 at both ends of the tee chamber 120. The bushing 3 is embedded in the clamping grooves 22. And a sealing groove 23 for installing a sealing ring is formed between the bushing 3 and the clamping grooves 22. The adapter cover 4 / end cover 5 is provided with a locking hole 24 for installing a locking screw on one side of the threaded hole 20 / through hole 21.

[0030] The working principle of the present utility model is that the medium flows into each valve seat 6 from the liquid inlet 110. The air pump is connected to the upper air chamber 102 through the air hole 101, so that the air pressure in the upper air chamber 102 increases. The piston part 12 drives the valve core 9 to move downward. At this time, the spring 10 is compressed. At this time, the air valve assembly 1 is in the open position, and the medium flows out from the liquid outlet 140 through the three-way cavity 120 and the inner cavity 130 in sequence; when the air source stops outputting, through the reset of the spring 10, the valve core 9 moves upward and abuts against the sealing seat, realizing independent control of multiple groups of air valve assemblies 1 to meet the control requirements of one input and multiple outputs in the hydraulic system.

[0031] The above are all the preferred embodiments of this application. The protection scope of this application is not limited hereby. Therefore, all equivalent changes made according to the structure, shape and principle of this application shall be covered within the protection scope of this application.

Claims

1. A multi-joint pneumatic valve group, characterized in that: The invention comprises an air valve assembly (1), a threaded rod (2), a shaft sleeve (3), a transfer cover (4) and an end cover (5), wherein two or more sets of air valve assemblies (1) are connected in series by means of the threaded rod (2), and the connection between adjacent air valve assemblies (1) is sealedly connected with the shaft sleeve (3), and the two ends of the threaded rod (2) are threadedly connected with the transfer cover (4) and the end cover (5), and the transfer cover (4) is provided with a liquid inlet (110), and the air valve assembly (1) comprises a valve seat (6), a valve cover (7), a sealing sleeve (8) and a valve core (9), and the valve seat (6) is fixedly connected with the sealing sleeve (8) through the valve cover (7), and a sliding joint is formed between the sealing sleeve (8) and the valve seat (6). The valve core (9) is provided with an air chamber (100) which is dynamically connected to the valve core (9), and the valve seat (6) is provided with an air hole (101) for controlling the upward and downward movement of the valve core (9). The valve seat (6) and the sealing sleeve (8) are sleeved on both sides of the valve core (9). The bottom of the valve seat (6) is provided with a three-way cavity (120) connected to the liquid inlet (110). The valve cover (7) and the sealing sleeve (8) are combined to form a liquid outlet (140). The valve core (9) is provided with an inner cavity (130) for connecting the three-way cavity (120) and the liquid outlet (140), and the valve cover (7) is provided with a sealing portion (11) for blocking the valve core (9) between the inner cavity (130) and the liquid outlet (140).

2. A multi-connection pneumatic valve group according to claim 1, characterized in that: The valve core (9) is provided with a piston portion (12), and the air chamber (100) is divided into an upper air chamber (102) and a lower air chamber (103) by the piston portion (12), and the valve seat (6) is located in the upper air chamber (102) and the lower air chamber (103) and is provided with air holes (101) for connecting to an external air source, and a spring (10) is provided between the valve seat (6) and the piston portion (12).

3. A multiple pneumatic valve group according to claim 2, characterized in that: The valve seat (6) is provided with a circular ring portion (13), and the two ends of the valve core (9) are respectively sleeved on the inner side of the circular ring portion (13) and the sealing sleeve (8), and the circular ring portion (13) / sealing sleeve (8) is sealed and connected to the valve core (9) via a sealing ring, and the spring (10) is sleeved on the outer side of the circular ring portion (13).

4. The multi-connection pneumatic valve group according to claim 1, characterized in that: The valve seat (6) is provided with a step portion (14) and a threaded portion (15); the sealing sleeve (8) is provided with an outer ring portion (16) corresponding to the step portion (14); the valve cover (7) is threadedly connected to the valve seat (6) via the threaded portion (15), and the outer ring portion (16) is clamped between the valve cover (7) and the valve seat (6).

5. A multiple pneumatic valve group according to claim 4, characterized in that: The valve cover (7) is integrally cast with a sealing portion (11), the bottom of the sealing portion (11) is provided with a rubber seat (17) and a rivet member (18) for riveting the rubber seat (17), and one end of the valve core (9) abuts against the rubber seat (17).

6. The multi-connection pneumatic valve group according to claim 1, characterized in that: Four groups of mounting blocks (19) are provided on the outside of the valve seat (6); the threaded rod (2) is connected in series to the valve seat (6) via the mounting blocks (19); the adapter cover (4) is provided with a threaded hole (20); the end cover (5) is provided with a through hole (21) coaxially distributed with the threaded hole (20); one end of the threaded rod (2) is threadedly connected to the threaded hole (20), and the other end is connected to the through hole (21) via a bolt.

7. A multiple pneumatic valve group according to claim 6, characterized in that: The valve seat (6) is provided with grooves (22) at both ends of the three-way cavity (120), the shaft sleeve (3) is embedded in the groove (22), and a sealing groove (23) for installing a sealing ring is formed between the shaft sleeve (3) and the groove (22).

8. The multi-connection pneumatic valve group according to claim 1, characterized in that: The adapter cover (4) / end cover (5) is provided with a locking hole (24) for installing a locking screw on one side of the threaded hole (20) / through hole (21).

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