Universal main switch valve of pneumatic and hydraulic system

Abstract

The utility model relates to the technical field of switch valves, in particular to a general type main switch valve of a pneumatic and hydraulic system. A general type main switch valve of a pneumatic and hydraulic system comprises a valve body, a valve plate, a first sealing ring and the like, the valve plate is fixedly arranged on the left side of the valve body through screws, the right side of the valve plate is a spigot end, the first sealing ring is arranged at the spigot end, and a cylindrical installation groove is formed in the middle of the valve body. A valve seat, a valve ball and another valve seat are sequentially arranged in the cylindrical mounting groove from right to left. The valve ball and the valve rod are stably matched through accurate assembly of all parts, operation is convenient and fast, installation is flexible, the valve is suitable for different media, air media, a silencer, oil liquid and other connectable storage containers can be contained, the state of the valve is controlled through the angle of the handle, air supply and residual pressure discharging can be achieved when the valve is used for a pneumatic system, oil inlet and oil return can be achieved when the valve is used for a hydraulic system, and the valve has multiple functions; pneumatic and hydraulic systems are widely compatible.

Description

TECHNICAL FIELD

[0001] The utility model relates to switch valve technical field especially relates to a general type master switch valve of pneumatic and hydraulic system. BACKGROUND

[0002] Switch valve is a kind of valve device specially used to control the on-off of fluid (including gas and liquid). Its core function is to realize the rapid start or stop of fluid flow by completely opening or closing the valve, rather than fine adjustment of fluid flow.

[0003] At present, the master switch valve in pneumatic system mainly adopts the form of hand slide valve. Hand slide valve has the characteristic of simple structure, and its working principle is to change the position of fluid inlet and outlet passage by the sliding of valve core on valve body sealing surface, to control the flow direction of fluid. Specifically, when the operator opens the hand slide valve, the system starts to supply air;When closing the hand slide valve, not only can cut off the air supply, but also can discharge the residual pressure in the air path, to provide strong guarantee for system safety.

[0004] However, the structural design of slide valve also has certain limitations. When closing the valve, the medium on the other end may leak to the atmosphere, which not only may cause waste of medium, but also may have certain influence on the surrounding environment. In addition, hand slide valve is usually only suitable for the working condition of using compressed air as medium, which limits its application range to some extent. UTILITY MODEL CONTENTS

[0005] In order to overcome the above-mentioned shortcomings in the prior art, the technical problem is to provide a general type master switch valve of pneumatic and hydraulic system.

[0006] The technical scheme is as follows: a general type master switch valve of pneumatic and hydraulic system, comprising a valve body, a valve plate, a first sealing ring, a valve seat, a valve ball, a valve rod, a second sealing ring, a nut and a handle, the valve plate is fixedly arranged on the left side of the valve body by screws, the right side of the valve plate is a stop end, the stop end is provided with a first sealing ring, a cylindrical mounting groove is formed in the middle of the valve body, a valve seat, a valve ball and another valve seat are sequentially arranged in the cylindrical mounting groove from right to left, arc-shaped openings are formed on the side of the valve seat close to the valve ball, the two valve seats are attached to the surface of the valve ball through the arc-shaped openings, the valve rod is slidably arranged through the upper part of the valve body, the lower end of the valve rod can be connected with the valve ball, two second sealing rings are arranged at intervals on the lower part of the valve rod, the nut is threadedly connected to the upper end of the valve rod, the handle is connected to the upper part of the valve rod, the surface of the valve ball is provided with a flow guide groove, the length of the flow guide groove is greater than the outer diameter of the valve seat, and the bottom of the valve body is provided with a mounting hole, which is communicated with the cylindrical mounting groove in the middle of the valve body.

[0007] Preferably, the lower end of the valve rod is provided with a flat position, and the top of the valve ball is provided with a clamping groove corresponding to the flat position.

[0008] Preferably, the first sealing ring and the second sealing ring are made of polytetrafluoroethylene.

[0009] Preferably, the first sealing ring, the second sealing ring and the rest of the valve seat are made of high-strength metal.

[0010] Preferably, a limiting seat is further included, the handle is fixedly connected with the limiting seat, a limiting hole is formed in the limiting seat, and a limiting hole is also formed in the front side of the top of the valve body.

[0011] Preferably, a mounting clamping position is formed in the right side of the valve body, a mounting clamping position is also formed in the left side of the valve plate, and the mounting clamping positions are provided with internal threads.

[0012] Preferably, the surface of the handle is provided with anti-skid lines.

[0013] Preferably, the outer surfaces of the valve body, the valve plate and the handle are plated with a corrosion-resistant plating layer.

[0014] Preferably, four countersunk grooves for accommodating screw heads are formed in the left side of the valve plate in a spaced manner.

[0015] Preferably, the handle and the limiting seat are integrally formed by an integrated forming process.

[0016] The utility model discloses the beneficial effect is: the utility model discloses through accurate assembly each part, realize valve ball and valve rod stable cooperation, convenient operation, its installation is flexible, adapts to different medium, air medium can install silencer, oil liquid etc. can connect storage container, handle angle control valve state, for pneumatic system can supply gas and discharge residual pressure, for hydraulic system can enter oil and return oil, has multiple functions, and widely compatible pneumatic and hydraulic system. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the three-dimensional structure schematic diagram of the utility model.

[0018] Figure 2 It is the left view of the utility model.

[0019] Figure 3 It is the plan view of the utility model.

[0020] Figure 4 It is the three-dimensional structure explosion schematic diagram of the utility model.

[0021] Figure 5 It is the three-dimensional structure sectional view of the utility model.

[0022] Mark 1_valve body, 2_valve plate, 21_first sealing ring, 3_valve seat, 4_valve ball, 5_valve rod, 6_second sealing ring, 7_nut, 8_handle, 9_diversion groove, 61_flat position, 62_clamping groove, 10_limiting seat, 101_limiting hole, 11_mounting clamping position. Detailed Implementation

[0023] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.

[0024] Example: A universal master switch valve for pneumatic and hydraulic systems, such as Figures 1-5 As shown, the valve includes a valve body 1, a valve plate 2, a first sealing ring 21, a valve seat 3, a valve ball 4, a valve stem 5, a second sealing ring 6, a nut 7, and a handle 8. The valve plate 2 is fixed to the left side of the valve body 1 by screws. The right side of the valve plate 2 has a stop end, on which the first sealing ring 21 is installed. A cylindrical mounting groove is formed in the middle of the valve body 1. From right to left, a valve seat 3, a valve ball 4, and another valve seat 3 are sequentially arranged in the cylindrical mounting groove. Each valve seat 3 has an arc-shaped opening on the side near the valve ball 4. The two valve seats 3 fit against the surface of the valve ball 4 through these arc-shaped openings. A valve stem 5 is slidably mounted through the upper part of the valve body 1. The lower end of the valve stem 5 can engage with the valve ball 4. Two second sealing rings 6 are spaced apart at the lower part of the valve stem 5. A nut 7 is threadedly connected to the upper end of the valve stem 5. The upper part of the valve body 1 is fitted with a handle 8. The valve ball 4 has a guide groove 9 on its surface. The length of the guide groove 9 is greater than the outer diameter of the valve seat 3. The bottom of the valve body 1 has a mounting hole that communicates with the cylindrical mounting groove in the middle of the valve body 1. When the valve ball 4 is rotated so that the valve body 1 and the valve plate 2 are no longer connected, the guide groove 9 is aligned with the valve seat 3 near the valve plate 2. Since the length of the guide groove 9 is greater than the outer diameter of the valve seat 3, the gas or hydraulic oil in the connecting pipe of the valve plate 2 will flow into the cylindrical mounting groove in the middle of the valve body 1 through the guide groove 9, and finally flow out through the mounting hole at the bottom of the valve body 1. The lower end of the valve stem 5 is provided with a flat part 61. The top of the valve ball 4 is provided with a corresponding snap-fit ​​groove 62. The flat part 61 at the lower end of the valve stem 5 can snap into the snap-fit ​​groove 62 on the top of the valve ball 4.

[0025] First, a valve seat 3 is placed in the valve body 1, then the valve ball 4 is placed in the valve body 1 with the clamping groove 62 facing up, tightly against the previously placed valve seat 3, then another valve seat 3 is placed, with the side of the two valve seats 3 with the arc-shaped opening tightly against the valve ball 4, then the stop end of the valve plate 2 with the first sealing ring 21 pre-fitted is pressed into the valve body 1, and the valve body 1 and the valve plate 2 are fixed together using screws, then the valve stem 5 with the second sealing ring 6 pre-fitted is pressed into the valve body 1, with the flat side 61 of the valve stem 5 aligned with the clamping groove 62 of the valve ball 4, ensuring that the flat side 61 of the valve stem 5 tightly fits the clamping groove 62 of the valve ball 4, then the handle 8 is inserted through the upper end of the valve stem 5, tightly against the upper end of the valve stem 5, and the nut 7 is tightened on the upper end of the valve stem 5 and tightly pressed on the handle 8, during installation, one end of the valve body 1 is installed in the flow channel that needs to be blocked, and one end of the valve plate 2 is installed in the flow channel that needs to release residual pressure, for the installation hole at the bottom of the valve body 1, if air medium is used, a silencer is installed, if oil or other fluids that need to be recovered are used, a pipeline is connected to a storage container, when the handle 8 is parallel to the direction of the valve body, the valve is in a flow-through state, when the handle 8 is perpendicular to the direction of the valve body, the valve is in a blocking / residual pressure releasing state, when the switch valve is used in a pneumatic system, a silencer can be connected, rotating the valve ball 4 opens it, which can supply air, rotating the valve ball 4 closes it, which cuts off the air supply and releases residual pressure, when the switch valve is used in a hydraulic system, an oil return pipe can be connected, rotating the valve ball 4 opens it, which can supply oil, rotating the valve ball 4 closes it, which cuts off the oil supply and directs the hydraulic oil back to the oil tank, in summary, the switch valve can be used in both pneumatic systems and hydraulic systems, with wider compatibility.

[0026] The first sealing ring 21 and the second sealing ring 6 are made of polytetrafluoroethylene, which has excellent corrosion resistance, wear resistance, sealing performance and high temperature resistance, the use of polytetrafluoroethylene for the first sealing ring 21 and the second sealing ring 6 can effectively prevent medium leakage, improve sealing performance, prolong service life, and is suitable for high temperature environments.

[0027] Except for the first sealing ring 21, the second sealing ring 6 and the valve seat 3, all other parts are made of high-strength metal material, which has high strength and hardness, can withstand large pressure and impact force, and can ensure the normal operation of the switch valve under high pressure and harsh conditions.

[0028] As shown in Figure 1 and Figure 3 , it also includes a limit seat 10, the handle 8 is fixedly connected with the limit seat 10, the limit seat 10 is provided with a limit hole 101, and the top front side of the valve body 1 is also provided with a limit hole 101.

[0029] For a system that is operating stably, the operator can lock the handle 8 between the two mounting holes on the valve body 1 and the limit seat 10 to prevent accidental contact by non-professionals and thus avoid safety accidents.

[0030] like Figure 4 and Figure 5 As shown, a mounting slot 11 is provided on the right side of the valve body 1, and a mounting slot 11 is also provided on the left side of the valve plate 2, and both mounting slots 11 are provided with internal threads.

[0031] After aligning the mounting slot 11 of this switch valve with the mounting slot 11 of the target part, the two can be quickly connected using a connector. The connector has internal threads for various connection options, achieving quick installation and allowing for multiple installation methods.

[0032] The handle 8 has anti-slip textures on its surface, which increase the friction of the handle 8 surface, making it easier and more stable for the operator to turn the handle 8, avoiding operational errors caused by slipping, and improving the safety and convenience of valve operation.

[0033] The outer surfaces of the valve body 1, valve plate 2, and handle 8 are all coated with an anti-corrosion coating. This coating can effectively prevent the valve body 1, valve plate 2, and handle 8 from being corroded by the external environment, thus extending the service life of this switch valve.

[0034] The valve plate 2 has four countersunk grooves on the left side at intervals to accommodate screw heads. The countersunk groove design allows the screw head to be fully embedded in the valve plate 2, preventing the screw head from protruding from the surface of the valve plate 2. This reduces the possibility of interference between the valve and other components during installation and use, making the installation of the valve flatter and more aesthetically pleasing, while also improving the safety of the valve.

[0035] The handle 8 and the limit seat 10 are made by a one-piece molding process. The one-piece molding process can make the handle 8 and the limit seat 10 form a whole, making the structure more robust and the connection tighter. It avoids problems such as loosening and falling off caused by weak welding or assembly, and improves the reliability and stability of this switch valve.

[0036] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A general-purpose master switch valve for pneumatic and hydraulic systems, characterized by, Include: Valve body (1); Valve plate (2), the left side of the valve body (1) is provided with the valve plate (2) by screwing; First sealing ring (21), the right side of the valve plate (2) is a stop end, and the stop end is provided with the first sealing ring (21); Valve seat (3) and valve ball (4), a cylindrical mounting groove is formed in the middle of the valve body (1), and the valve seat (3), the valve ball (4) and another valve seat (3) are sequentially arranged from right to left in the cylindrical mounting groove, arc-shaped openings are formed on the side of the valve seat (3) close to the valve ball (4), the two valve seats (3) are attached to the surface of the valve ball (4) through the arc-shaped openings, and a flow guide groove (9) is formed on the surface of the valve ball (4), the length of the flow guide groove (9) is greater than the outer diameter of the valve seat (3); Valve rod (5), the valve rod (5) is slidably arranged through the upper part of the valve body (1), and the lower end of the valve rod (5) can be connected with the valve ball (4); Second sealing ring (6), two second sealing rings (6) are arranged at intervals on the lower part of the valve rod (5); Nut (7), the upper end of the valve rod (5) is threadedly connected with the nut (7); and handle (8), the upper part of the valve rod (5) is connected with the handle (8).

2. A general-purpose master switch valve for pneumatic and hydraulic systems according to claim 1, characterized in that, The lower end of the valve rod (5) is provided with a flat position (61), and the top of the valve ball (4) is correspondingly provided with a clamping groove (62).

3. A general-purpose master switch valve for pneumatic and hydraulic systems according to claim 2, characterized in that, The first sealing ring (21) and the second sealing ring (6) are made of polytetrafluoroethylene material.

4. A general-purpose master switch valve for pneumatic and hydraulic systems according to claim 3, characterized in that, Except that the first sealing ring (21), the second sealing ring (6) and the valve seat (3) are made of high-strength metal material.

5. A general purpose master switch valve for pneumatic and hydraulic systems according to claim 4, characterized in that Also include: Limiting seat (10), the handle (8) is fixedly connected with the limiting seat (10), and the limiting seat (10) is provided with a limiting hole (101), and the top front side of the valve body (1) is also provided with the limiting hole (101).

6. A general purpose master switch valve for pneumatic and hydraulic systems according to claim 5, characterized in that The right side of the valve body (1) is provided with a mounting clamping position (11), and the left side of the valve plate (2) is also provided with the mounting clamping position (11), and the mounting clamping positions (11) at two places are all provided with internal threads.

7. A general purpose master switch valve for pneumatic and hydraulic systems according to claim 6, characterized in that The surface of the handle (8) is provided with anti-skid lines.

8. A general purpose master switch valve for pneumatic and hydraulic systems according to claim 7, characterized in that The outer surfaces of the valve body (1), the valve plate (2) and the handle (8) are all plated with a corrosion-resistant plating layer.

9. A general-purpose master switch valve for pneumatic and hydraulic systems according to claim 8, characterized in that, Four counter-sunk grooves for accommodating screw heads are arranged at intervals on the left side of the valve plate (2).

10. A general-purpose master switch valve for pneumatic and hydraulic systems according to claim 9, characterized in that, The handle (8) and the limiting seat (10) are made of one-piece forming process.

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