A two-position five-way pneumatic directional control valve

Abstract

The application provides a two-position five-way pneumatic reversing valve, and relates to the technical field of hydraulic control valves.The valve body is provided with a first air outlet hole, an air hole and a second air outlet hole from left to right on the lower side, and the inner cavity of the valve body is provided with a valve core.The left end of the valve body is provided with a front baffle, and the right side of the valve body is provided with a piston assembly, which is in contact with the right end surface of the valve core.The valve body is provided with a first annular protrusion, a second annular protrusion, a third annular protrusion, a fourth annular protrusion and a fifth annular protrusion corresponding to each hole.The outer side of the air hole is provided with a plug A, and the air hole is connected with the piston assembly through a pipeline arranged in the valve body.The pipeline is internally provided with a plug B.The electromagnetic structure of the application is integrated, and the parts have better coaxiality during production and assembly, effectively ensuring the service life of the product and the extremely low product failure rate.Compared with the existing split structure, the application has higher electromagnetic conversion efficiency and can effectively reduce the power consumption of the product.

Description

Technical Field

[0001] This invention relates to the field of hydraulic control valve technology, and in particular to a two-position five-way pneumatic directional valve. Background Technology

[0002] Solenoid valves are a type of commonly used hydraulic control valve. They control the movement of the valve core by the attraction and release of an electromagnet, thereby controlling the direction of fluid flow.

[0003] The existing pneumatic directional valves use a split electromagnetic structure. This split structure makes it easier for parts to have poor coaxiality during production and assembly, which can greatly affect the product's lifespan and failure rate.

[0004] Therefore, it is essential to design a two-position five-way pneumatic directional valve. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of this invention is to provide a two-position five-way pneumatic directional valve.

[0006] To achieve the above objectives, the present invention provides the following solution:

[0007] This invention provides a two-position five-way pneumatic directional valve, comprising: a valve body, a valve core, and a piston assembly. The upper side of the valve body is provided with a first silencing hole, an air inlet, and a second silencing hole sequentially from left to right. The lower side of the valve body is provided with a first air outlet, a vent hole, and a second air outlet sequentially from left to right. The valve core is housed within the inner cavity of the valve body. A front baffle is provided at the left end of the valve body. The piston assembly is located on the right side of the valve body, and the piston assembly contacts the right end face of the valve core, driving the valve core to move along the inner cavity of the valve body. A first annular protrusion, a second annular protrusion, a third annular protrusion, a fourth annular protrusion, and a fifth annular protrusion are provided on the valve body corresponding to the first silencing hole, the air inlet, the second silencing hole, the first air outlet, and the second air outlet, respectively, for establishing a sealing condition through the annular protrusions fitting against the valve body. A plug A is provided on the outer side of the vent hole. The vent hole is connected to the piston assembly through a pipe provided inside the valve body, and a plug B is provided inside the pipe.

[0008] Preferably, the right end face of the valve body is connected to the front baffle by screw A and elastic washer, and a rectangular groove is provided between the right end face of the valve body and the front baffle, and an O-ring is provided inside the rectangular groove.

[0009] Preferably, a conical spring is provided on the left side of the valve body, and the left side of the conical spring abuts against the inside of the circular countersunk hole provided on the right side of the front baffle, while the right side of the conical spring abuts against the left end face of the valve core.

[0010] Preferably, the piston assembly includes a piston cylinder, a piston, an armature, a stop, and a coil assembly. The piston cylinder has countersunk holes on both sides. The left countersunk hole of the piston cylinder is connected to the valve body via screw B and an elastic washer. The right countersunk hole of the piston cylinder is connected to the stop. The piston is fitted inside the piston cylinder. The left end face of the piston abuts against the right end face of the valve core, and the right end face of the piston abuts against the piston cylinder. The piston has a stepped surface and a Y-shaped sealing ring. The armature is fitted inside the stop. The armature has a transverse through hole on its left side, which is connected to the vent hole via a pipe inside the valve body. The armature has a countersunk hole on its right side. A spring is positioned between the countersunk hole on the right side of the armature and the inner end face of the stop. The coil assembly is fitted outside the stop, and a yoke is located inside the coil assembly.

[0011] Preferably, the stop, armature, and yoke are all made of magnetic metal material, and the surfaces of the stop, armature, and yoke are coated with a wear-resistant and corrosion-resistant coating. The valve body, valve core, piston cylinder, front baffle, and spring are all made of non-magnetic material.

[0012] According to specific embodiments provided by the present invention, the present invention discloses the following technical effects:

[0013] This invention provides a two-position five-way pneumatic directional valve, including a valve body, a valve core, and a piston assembly. The upper side of the valve body has a first silencing hole, an air inlet, and a second silencing hole arranged sequentially from left to right. The lower side of the valve body has a first air outlet, a vent hole, and a second air outlet arranged sequentially from left to right. The valve core is housed within the inner cavity of the valve body. A front baffle is located at the left end of the valve body. The piston assembly is located on the right side of the valve body, and the piston assembly contacts the right end face of the valve core, driving the valve core to move along the inner cavity of the valve body. A first annular protrusion, a second annular protrusion, a third annular protrusion, a fourth annular protrusion, and a fifth annular protrusion are provided on the valve body corresponding to the first silencing hole, the air inlet, the second silencing hole, the first air outlet, and the second air outlet. These annular protrusions are used to fit against the valve body and establish a sealing condition. A plug A is provided on the outer side of the vent hole. The vent hole is connected to the piston assembly through a pipe arranged inside the valve body, and a plug B is provided inside the pipe. The electromagnetic structure of this invention is integrated, resulting in better coaxiality of the parts during production and assembly, effectively ensuring product lifespan and an extremely low product failure rate. Compared to existing split structures, the integrated structure of this invention offers higher electromagnetic conversion efficiency, effectively reducing product power consumption. The electromagnetic structure of this invention also has a shorter excitation time, allowing the solenoid valve body to open faster under the same operating conditions, meeting the requirements of high-response applications. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the overall structure of a two-position five-way pneumatic directional valve according to an embodiment of the present invention;

[0016] Figure 2 This is a schematic diagram of the gas flow direction of a two-position five-way pneumatic reversing valve according to an embodiment of the present invention.

[0017] Reference numerals: 1-Valve body, 2-Valve core, 3-Piston cylinder, 4-Plug pin B, 5-Front baffle, 6-Conical spring, 7-Armature, 8-O-ring, 9-Piston, 10-Y-type sealing ring, 11-Elastic washer, 12-Screw A, 13-Screw B, 14-Plug pin A, 15-Spring, 16-Block, 17-Coil assembly, 18-Outer shell, 19-First silencer hole, 20-Air inlet, 21-Second silencer hole, 22-First air outlet, 23-Ventilation hole, 24-Second air outlet, 25-Pipeline. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] The purpose of this invention is to provide a two-position five-way pneumatic directional valve. The electromagnetic structure of this invention is integrated, which ensures better coaxiality of the parts during production and assembly, effectively guaranteeing product lifespan and extremely low product failure rate. Compared with the existing split structure, it has higher electromagnetic conversion efficiency and can effectively reduce the power consumption of the product.

[0020] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1As shown, the present invention provides a two-position five-way pneumatic reversing valve, comprising: a valve body 1, a valve core 2, and a piston assembly. The upper side of the valve body 1 is provided with a first silencing hole 19, an air inlet 20, and a second silencing hole 21 sequentially arranged from left to right. The lower side of the valve body 1 is provided with a first air outlet 22, a vent hole 23, and a second air outlet 24 sequentially arranged from left to right. The valve core 2 is disposed within the inner cavity of the valve body 1. A front baffle 5 is disposed at the left end of the valve body 1. The piston assembly is disposed on the right side of the valve body 1, and the piston assembly contacts the right end face of the valve core 2 for driving the valve... The core 2 moves along the inner cavity of the valve body 1. The valve body 1 is provided with a first annular protrusion, a second annular protrusion, a third annular protrusion, a fourth annular protrusion and a fifth annular protrusion corresponding to the first silencer hole 19, the air inlet hole 20, the second silencer hole 21, the first air outlet hole 22 and the second air outlet hole 24. The annular protrusions are used to fit against the valve body 1 to establish a sealing condition. A plug A14 is provided on the outside of the vent hole 23. The vent hole 23 is connected to the piston assembly through a pipe 25 provided inside the valve body 1. A plug B4 is provided inside the pipe 25.

[0022] The right end face of the valve body 1 is connected to the front baffle 5 by screw A12 and elastic washer 11. A rectangular groove is provided between the right end face of the valve body 1 and the front baffle, and an O-ring 8 is provided inside the rectangular groove.

[0023] A conical spring 6 is provided on the left side of the valve body 1, and the left side of the conical spring 6 abuts against the inside of the circular countersunk hole provided on the right side of the front baffle 5, while the right side of the conical spring 6 abuts against the left end face of the valve core 2.

[0024] The piston assembly includes a piston cylinder 3, a piston 9, an armature 7, a stop 16, and a coil assembly 17. The piston cylinder 3 has countersunk holes on both sides. The left countersunk hole of the piston cylinder 3 is connected to the valve body 1 via a screw B13 and an elastic washer 11. The right countersunk hole of the piston cylinder 3 is connected to the stop 16. The piston 9 is fitted inside the piston cylinder 3. The left end face of the piston 9 abuts against the right end face of the valve core 2, and the right end face of the piston 9 abuts against the piston cylinder 3. The piston 9 has a stepped surface. A Y-shaped sealing ring 10 is provided on the upper part. The armature 7 is sleeved inside the stop 16. The left side of the armature 7 is provided with a transverse through hole, and the through hole is connected to the vent hole 23 through the pipe 25 provided inside the valve body 1. The right side of the armature 7 is provided with a countersunk hole. The spring 15 is provided between the countersunk hole on the right side of the armature 7 and the inner end face of the stop 16. The outer side of the stop 16 is sleeved with a coil assembly 17. The coil assembly 17 is provided with a yoke, which is a component that constitutes the magnetic circuit and is encased in plastic inside the coil.

[0025] The stop iron 16, armature 7, and yoke are all made of magnetic metal material, and the surfaces of the stop iron 16, armature 7, and yoke are all coated with wear-resistant and corrosion-resistant coatings. The valve body 1, valve core 2, piston cylinder 3, front baffle 5, and spring 15 are all made of non-magnetic material.

[0026] like Figure 2 As shown, during use, when the coil assembly 17 is de-energized, the air inlet 20 communicates with the first air outlet 22 through the gap between the transverse inner cavity of the valve body 1 and the second annular protrusion of the valve core 2, allowing air to flow; when the coil assembly 17 is energized, the armature 7 moves to the right to compress the spring 15, the upper hole of the piston cylinder 3 opens, the air inlet 20 applies pressure to the piston 9 through the vent 23, pushing the valve core 2 to move to the left, the second annular protrusion of the valve core 2 fits against the valve body 1, establishing a seal, and the air inlet 20 and the first air outlet 22 are disconnected; the third annular protrusion of the valve core 2 moves to the air inlet 20, and the air inlet 20 connects with the second air outlet 24, allowing air to flow.

[0027] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0028] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. Furthermore, those skilled in the art will recognize that, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A two-position five-way pneumatic directional valve, characterized in that, include: The valve body comprises a valve body, a valve core, and a piston assembly. The upper side of the valve body has a first silencing hole, an air inlet, and a second silencing hole arranged sequentially from left to right. The lower side of the valve body has a first air outlet, a vent hole, and a second air outlet arranged sequentially from left to right. The valve core is housed within the inner cavity of the valve body. A front baffle is located at the left end of the valve body. The piston assembly is located on the right side of the valve body, and the piston assembly contacts the right end face of the valve core, driving the valve core to move along the inner cavity of the valve body. A first annular protrusion, a second annular protrusion, a third annular protrusion, a fourth annular protrusion, and a fifth annular protrusion are provided on the valve body corresponding to the first silencing hole, air inlet, second silencing hole, first air outlet, and second air outlet. These annular protrusions are used to fit against the valve body and establish a sealing condition. A plug A is provided on the outer side of the vent hole. The vent hole is connected to the piston assembly through a pipe arranged inside the valve body, and a plug B is provided inside the pipe. The piston assembly includes a piston cylinder, a piston, an armature, a stop, and a coil assembly. The piston cylinder has countersunk holes on both sides. The left countersunk hole of the piston cylinder is connected to the valve body via screw B and an elastic washer. The right countersunk hole of the piston cylinder is connected to the stop. The piston is fitted inside the piston cylinder. The left end face of the piston abuts against the right end face of the valve core, and the right end face of the piston abuts against the piston cylinder. The piston has a stepped surface and a Y-shaped sealing ring. The armature is fitted inside the stop. The armature has a transverse through hole on its left side, which is connected to the vent hole via a pipe inside the valve body. The armature has a countersunk hole on its right side. A spring is installed between the countersunk hole on the right side of the armature and the inner end face of the stop. The coil assembly is fitted outside the stop, and a yoke is installed inside the coil assembly.

2. The two-position five-way pneumatic directional valve according to claim 1, characterized in that, The right end face of the valve body is connected to the front baffle by screw A and elastic washer. A rectangular groove is provided between the right end face of the valve body and the front baffle, and an O-ring is provided inside the rectangular groove.

3. The two-position five-way pneumatic directional valve according to claim 2, characterized in that, A conical spring is provided on the left side of the valve body, and the left side of the conical spring abuts against the inside of the circular countersunk hole provided on the right side of the front baffle, while the right side of the conical spring abuts against the left end face of the valve core.

4. The two-position five-way pneumatic directional valve according to claim 3, characterized in that, The stop, armature, and yoke are all made of magnetic metal, and the surfaces of the stop, armature, and yoke are coated with a wear-resistant and corrosion-resistant coating. The valve body, valve core, piston cylinder, front baffle, and spring are all made of non-magnetic materials.

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