CN106895176B

CN106895176B - Two-position five-way ceramic sliding plate type electromagnetic valve

Info

Publication number: CN106895176B
Application number: CN201710245033.6A
Authority: CN
Inventors: 毛秉
Original assignee: Ningbo Sono Manufacturing Co ltd
Current assignee: Ningbo Sono Manufacturing Co ltd
Priority date: 2017-04-14
Filing date: 2017-04-14
Publication date: 2022-11-25
Anticipated expiration: 2037-04-14
Also published as: CN106895176A

Abstract

The invention discloses a two-position five-way ceramic sliding plate type electromagnetic valve which comprises a valve body, a valve rod, a left end cover and a right end cover, wherein a valve plate is arranged at the bottom of the valve body; the left end of valve rod is equipped with little piston assembly, and the right-hand member of valve rod is equipped with big piston, is formed with left cavity between little piston assembly and the left end lid, is formed with right cavity between big piston and the right end lid, and the valve pocket communicates with left cavity, communicates with right cavity through second gas passage through first gas passage respectively, still is provided with the guide's subassembly that is used for controlling second gas passage to switch on or cut off on the valve body. The invention has the advantages of simple and reasonable structure, convenient installation and use, good air tightness, high sensitivity, difficult abrasion, stable and reliable working performance and long service life.

Description

Two-position five-way ceramic sliding plate type electromagnetic valve

Technical Field

The invention relates to the technical field of valves, in particular to a two-position five-way ceramic sliding plate type electromagnetic valve.

Background

Valve products are widely applied to fluid control in various technical fields, and a two-position five-way electromagnetic valve is one of the fluid control products and is well known. The two-position five-way electromagnetic valve is characterized in that the valve body is provided with five air ports (namely one air inlet, two air outlets and two air outlets), the valve rod can reciprocate at two positions, and the air channels are switched by axial movement of the valve rod during operation. Common two five solenoid valves on the market usually set up above-mentioned five gas ports on the different sides of valve body, lead to the whole valve when installation with the help of a plurality of couplings, especially when cooperating with other solenoid valves, can cause the comparatively complicated defect of pipeline setting, both increased the assembly degree of difficulty, also can influence the reliability of system work simultaneously.

Therefore, the chinese patent (application number 201510545795.9) also discloses a two-position five-way bottom connection type electromagnetic valve, which can directly assemble the valve body on the bus board or the base without connecting a pipe joint when in use by arranging five gas ports on the same side wall of the valve body, thereby greatly reducing complicated wiring work, leading the assembly and disassembly to be more convenient and improving the reliability of the system work.

However, the above two-position five-way bottom-connected solenoid valve also has certain disadvantages: this solenoid valve is through setting up a plurality of flat rings in the outside of valve rod, utilizes the sealed contact of flat ring and valve body inner wall or breaks away from during valve rod axial displacement, and then realizes the switching of gas circuit, because the flat ring is rubber materials usually and makes, not only can increase frictional resistance for sensitivity is lower, and when the valve rod frequently moved, the wearing and tearing appeared easily in the flat ring moreover, makes the gas tightness reduce, leads to the gas leakage phenomenon to appear in the valve body, has influenced the working property and the life of valve.

Disclosure of Invention

The invention aims to provide a two-position five-way ceramic sliding plate type electromagnetic valve aiming at the defects and shortcomings of the prior art, which has the advantages of simple and reasonable structure, convenience in installation and use, better air tightness, higher sensitivity, difficulty in abrasion, stable and reliable working performance and longer service life.

In order to achieve the purpose, the invention adopts the following technical scheme.

The two-position five-way ceramic sliding plate type electromagnetic valve comprises a valve body, a valve rod movably arranged in a valve cavity of the valve body, a left end cover and a right end cover respectively arranged at two ends of the valve body, wherein a valve plate is arranged at the bottom of the valve body, a ceramic sliding plate is fixed on the inner side wall of the valve plate, the valve plate and the ceramic sliding plate are sequentially provided with a first exhaust port, a first air outlet, an air inlet, a second air outlet and a second exhaust port in a matched mode from left to right, a sliding block in sliding fit with the ceramic sliding plate is arranged in the middle of the valve rod, and a first groove and a second groove for air circuit switching are formed in the side face, attached to the ceramic sliding plate, of the sliding block; the left end of valve rod is equipped with little piston assembly, the right-hand member of valve rod is equipped with big piston, the pressurized area of little piston assembly is less than the pressurized area of big piston, little piston assembly with be formed with left cavity between the left end lid, big piston with be formed with right cavity between the right end lid, the valve pocket respectively through first gas passage with left cavity intercommunication, through second gas passage with right cavity intercommunication, still be provided with on the valve body and be used for control the guide's subassembly that second gas passage switched on or cut off.

Furthermore, the small piston assembly comprises a piston sleeve and a small piston, the piston sleeve is axially limited between the valve body and the left end cover, and the small piston is movably sleeved in the piston sleeve.

Further, the maximum diameter of the piston sleeve is equal to the maximum diameter of the large piston.

Furthermore, the left end outer wall of the valve body is provided with a fixed seat, and the valve body is matched with the fixed seat to form the first gas channel.

Furthermore, the first gas passage comprises a first passage and a second passage which are arranged at the left end of the valve body and a third passage which is arranged in the fixed seat, and the valve cavity, the first passage, the third passage, the second passage and the left cavity are communicated in sequence.

Further, a first sealing gasket is arranged between the fixing seat and the valve body.

Furthermore, the pilot assembly comprises a pilot seat, a sleeve, a movable iron core, a static iron core and a coil assembly, the pilot seat is fixedly connected with the valve body, one end of the sleeve is fixedly connected with the pilot seat, the movable iron core is movably arranged in the sleeve, the static iron core is fixedly arranged in the sleeve, a movable iron core spring is arranged between the movable iron core and the sleeve, and the coil assembly is arranged outside the sleeve;

the second gas passage is including locating respectively the fourth passageway and the fifth passageway of valve body right-hand member, locating respectively sixth passageway and seventh passageway in the guide holder, the fourth passageway with sixth passageway intercommunication, the seventh passageway the fifth passageway reaches right side cavity communicates in proper order, it keeps away from to move the iron core the one end of quiet iron core is provided with first sealing member, first sealing member is used for control the sixth passageway with the seventh passageway switches on or cuts off, be equipped with exhaust passage in the quiet iron core, it is close to move the iron core the one end of quiet iron core is provided with the second sealing member, the second sealing member is used for control exhaust passage switches on or cuts off.

Further, a second sealing gasket is arranged between the guide seat and the valve body.

Furthermore, the two ends of the valve body are symmetrically arranged, and the left end cover and the right end cover are symmetrically arranged relative to the valve body.

Further, the bottom of valve body is provided with the base, be equipped with a plurality of gas pockets on the base, and a plurality of the gas pocket respectively with first gas vent, first gas outlet, air inlet, second gas outlet and second gas vent one-to-one setting.

The invention has the beneficial effects that: according to the two-position five-way electromagnetic valve, the five gas ports are arranged on the same side of the valve body, so that the valve body can be directly assembled on the base when the two-position five-way electromagnetic valve is used without connecting pipe joints, complex wiring work is greatly reduced, the two-position five-way electromagnetic valve is fast and convenient to assemble and disassemble, and the reliability of system work is improved; the valve plate is arranged at the bottom of the valve body, the ceramic sliding plate is arranged on the inner side of the valve plate, the sliding block which is in sliding fit with the ceramic sliding plate is arranged in the middle of the valve rod, the first groove and the second groove are arranged on the surface, attached to the ceramic sliding plate, of the sliding block, when the valve rod axially moves under the action of pressure difference, the sliding block also moves relative to the ceramic sliding plate along with the valve rod, and the switching of gas circuits is realized under the matching action of the first groove and the second groove. The invention has simple and reasonable structure and convenient and quick installation.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In FIGS. 1-2: 1. a valve body; 2. a valve cavity; 3. a valve stem; 4. a left end cap; 5. a right end cap; 6. a valve plate; 61. a first exhaust port; 62. a first air outlet; 63. an air inlet; 64. a second air outlet; 65. a second exhaust port; 66. sealing the combined ring; 7. a ceramic slide plate; 8. a base; 81. air holes; 9. a slider; 91. a first groove; 92. a second groove; 101. a piston sleeve; 102. a small piston; 11. a large piston; 12. a left chamber; 13. a right chamber; 141. a first channel; 142. a second channel; 151. a fourth channel; 152. a fifth channel; 153. a sixth channel; 154. a seventh channel; 17. a fixed seat; 171. a first gasket; 181. a pilot base; 182. a sleeve; 183. a movable iron core; 184. a stationary iron core; 185. a coil assembly; 186. a movable iron core spring; 187. a first seal member; 188. a second seal member; 189. an exhaust passage; 190. a second gasket.

Detailed Description

The invention will be further described with reference to the accompanying drawings.

Two five-way ceramic slide formula solenoid valves as shown in fig. 1 and fig. 2, including valve body 1, movably set up the valve rod 3 in the valve chamber 2 of valve body 1, set up respectively in the left end lid 4 and the right-hand member lid 5 at valve body 1 both ends, in this embodiment, the both ends of valve body 1 are the symmetry and set up, left end lid 4 is the symmetry with right-hand member lid 5 for valve body 1 and sets up, can be so that each inside component of valve body 1 can be according to actual demand interchange mounted position, thereby the convenience in use degree has been improved, the commonality is better.

The bottom of valve body 1 is provided with valve plate 6, the inside wall of valve plate 6 is fixed with ceramic slide 7, valve plate 6 and ceramic slide 7 cooperate from a left side to the right side in proper order and are provided with first gas vent 61, first gas outlet 62, the air inlet 63, second gas outlet 64 and second gas vent 65, for simple to operate, the bottom of valve body 1 is provided with base 8, be equipped with a plurality of gas pockets 81 on base 8, and a plurality of gas pockets 81 respectively with first gas vent 61, first gas outlet 62, the air inlet 63, second gas outlet 64 and second gas vent 65 one-to-one setting. In this embodiment, a sealing combination ring 66 is arranged between the valve plate 6 and the ceramic sliding plate 7 and between the valve plate 6 and the base 8 to improve the air tightness. The middle part of valve rod 3 is provided with the slider 9 that slides the complex with ceramic slide 7, and the side of slider 9 and the laminating of ceramic slide 7 is equipped with first recess 91 and second recess 92 that are used for carrying on the gas circuit and switch.

The left end of valve rod 3 is equipped with little piston assembly, and the right-hand member of valve rod 3 is equipped with big piston 11, and little piston assembly's pressurized area is less than the pressurized area of big piston 11, is formed with left cavity 12 between little piston assembly and the left end lid 4, is formed with right cavity 13 between big piston 11 and the right-hand member lid 5. In this embodiment, in order to improve the assembly precision and make the installation more convenient, the small piston assembly includes piston sleeve 101 and small piston 102, and piston sleeve 101 is axially limited between valve body 1 and left end cover 4, and small piston 102 movable sleeve is located in piston sleeve 101. Specifically, the maximum diameter of the piston sleeve 101 is equal to the maximum diameter of the large piston 11, so that the installation positions of the small piston assembly and the large piston 11 can be interchanged according to actual requirements, and the use convenience is improved.

The valve cavity 2 is communicated with the left chamber 12 through a first gas passage and communicated with the right chamber 13 through a second gas passage, and the valve body 1 is also provided with a pilot assembly for controlling the conduction or the cut-off of the second gas passage.

The outer wall of the left end of the valve body 1 is provided with a fixed seat 17, the valve body 1 is matched with the fixed seat 17 to form a first gas channel, specifically, the first gas channel comprises a first channel 141 and a second channel 142 which are arranged at the left end of the valve body 1, and a third channel which is arranged in the fixed seat 17, and the valve cavity 2, the first channel 141, the third channel, the second channel 142 and the left cavity 12 are sequentially communicated. In order to improve the air tightness, a first gasket 171 is disposed between the fixing seat 17 and the valve body 1.

The pilot assembly comprises a pilot base 181, a sleeve 182, a movable iron core 183, a static iron core 184 and a coil assembly 185, the pilot base 181 is fixedly connected with the valve body 1, one end of the sleeve 182 is fixedly connected with the pilot base 181, the movable iron core 183 and the static iron core 184 are movably arranged in the sleeve 182, a movable iron core spring 186 is arranged between the movable iron core 183 and the sleeve 182, and the coil assembly 185 is arranged outside the sleeve 182.

The second gas channel comprises a fourth channel 151 and a fifth channel 152 which are respectively arranged at the right end of the valve body 1, a sixth channel 153 and a seventh channel 154 which are respectively arranged in the guide seat 181, the fourth channel 151 is communicated with the sixth channel 153, the seventh channel 154, the fifth channel 152 and the right chamber 13 are sequentially communicated, a first sealing element 187 is arranged at one end, away from the static iron core 184, of the movable iron core 183, the first sealing element 187 is used for controlling the conduction or the disconnection of the sixth channel 153 and the seventh channel 154, an exhaust channel 189 is arranged in the static iron core 184, a second sealing element 188 is arranged at one end, close to the static iron core 184, of the movable iron core 183, and the second sealing element 188 is used for controlling the conduction or the disconnection of the exhaust channel 189. In order to improve the airtightness, a second gasket 190 is provided between the pilot seat 181 and the valve body 1.

The working principle of the invention is as follows: in an initial state, the pilot assembly is not electrified, at this time, compressed gas is introduced into the gas inlet 63, part of the compressed gas in the gas inlet 63 flows into the valve cavity 2 and flows into the left chamber 12 through the first gas passage, so that the pressure of the left chamber 12 is increased, the small piston 102 is pressed and drives the valve rod 3 to move rightwards, the slide block 9 also moves synchronously with the valve rod 3, at this time, the gas inlet 63 is communicated with the first gas outlet 62, the second gas outlet 64 is communicated with the second gas outlet 65, and the first gas outlet 61 is closed; when the pilot assembly is powered on, the movable iron core 183 is far away from the pilot seat 181 under the action of electromagnetic suction, so that the sixth channel 153 is communicated with the seventh channel 154, gas in the valve cavity 2 flows into the right chamber 13 through the second gas channel, the pressure in the right chamber 13 is increased, because the pressure-bearing area of the large piston 11 is larger than that of the small piston 102, under the action of pressure difference, the large piston 11 can push the valve rod 3 to move leftwards, the slide block 9 also moves leftwards synchronously, at this time, the gas inlet 63 is communicated with the second gas outlet 64, the first gas outlet 62 is communicated with the first gas outlet 61, and the second gas outlet 65 is closed; when the pilot assembly is powered off again, the movable iron core 183 closes the sixth channel 153 again, the gas in the right chamber 13 is exhausted through the exhaust channel 189 of the fixed iron core 184, the pressure of the right chamber 13 is reduced, the small piston 102 pushes the valve rod 3 to move rightwards again, and therefore gas path switching is achieved again.

According to the two-position five-way electromagnetic valve, the five air ports are arranged on the same side of the valve body 1, so that the valve body 1 can be directly assembled on the base 8 when the two-position five-way electromagnetic valve is used, a pipe joint is not required to be connected, complex wiring work is greatly reduced, the assembly and disassembly are rapid and convenient, and the reliability of system work is improved; the valve plate 6 is arranged at the bottom of the valve body 1, the ceramic sliding plate 7 is arranged on the inner side of the valve plate 6, the sliding block 9 which is matched with the ceramic sliding plate 7 in a sliding mode is arranged in the middle of the valve rod 3, the first groove 91 and the second groove 92 are arranged on the surface, attached to the ceramic sliding plate 7, of the sliding block 9, when the valve rod 3 moves axially under the action of pressure difference, the sliding block 9 moves relative to the ceramic sliding plate 7 along with the valve rod 3, and the switching of air passages is achieved under the matching action of the first groove 91 and the second groove 92.

The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present invention are included in the scope of the present invention.

Claims

1. Two five-way ceramic slide formula solenoid valves, including the valve body, movably set up in valve rod in the valve pocket of valve body, set up respectively in the left end lid and the right-hand member lid at valve body both ends, its characterized in that: the bottom of the valve body is provided with a valve plate, the inner side wall of the valve plate is fixed with a ceramic sliding plate, the valve plate and the ceramic sliding plate are sequentially provided with a first exhaust port, a first air outlet, an air inlet, a second air outlet and a second exhaust port from left to right in a matching way, a sliding block which is matched with the ceramic sliding plate in a sliding mode is arranged in the middle of the valve rod, and a first groove and a second groove which are used for switching gas paths are formed in the side face, attached to the ceramic sliding plate, of the sliding block; the left end of valve rod is equipped with little piston assembly, the right-hand member of valve rod is equipped with big piston, little piston assembly's pressurized area is less than big piston's pressurized area, little piston assembly with be formed with left cavity between the left end lid, big piston with be formed with right cavity between the right end lid, the valve pocket respectively through first gas passage with left cavity intercommunication, through second gas passage with right cavity intercommunication, still be provided with on the valve body and be used for controlling the guide subassembly that second gas passage switched on or cut off.

2. The two-position five-way ceramic slide type electromagnetic valve according to claim 1, characterized in that: the small piston assembly comprises a piston sleeve and a small piston, the piston sleeve is axially limited between the valve body and the left end cover, and the small piston is movably sleeved in the piston sleeve.

3. The two-position five-way ceramic slide type electromagnetic valve according to claim 2, characterized in that: the maximum diameter of the piston sleeve is equal to the maximum diameter of the large piston.

4. The two-position five-way ceramic slide type electromagnetic valve according to claim 1, characterized in that: the left end outer wall of valve body is provided with the fixing base, the valve body with the fixing base cooperation is formed with first gas channel.

5. The two-position five-way ceramic slide type electromagnetic valve according to claim 4, characterized in that: the first gas channel comprises a first channel and a second channel which are arranged at the left end of the valve body, and a third channel which is arranged in the fixed seat, and the valve cavity, the first channel, the third channel, the second channel and the left cavity are communicated in sequence.

6. The two-position five-way ceramic slide type electromagnetic valve according to claim 4 or 5, characterized in that: a first sealing gasket is arranged between the fixed seat and the valve body.

7. The two-position five-way ceramic slide type electromagnetic valve according to claim 1, characterized in that: the guide assembly comprises a guide seat, a sleeve, a movable iron core, a static iron core and a coil assembly, the guide seat is fixedly connected with the valve body, one end of the sleeve is fixedly connected with the guide seat, the movable iron core and the static iron core are movably arranged in the sleeve, a movable iron core spring is arranged between the movable iron core and the sleeve, and the coil assembly is arranged outside the sleeve;

8. The two-position five-way ceramic slide type solenoid valve of claim 7, wherein: and a second sealing gasket is arranged between the guide seat and the valve body.

9. The two-position five-way ceramic slide type electromagnetic valve according to claim 1, characterized in that: the two ends of the valve body are symmetrically arranged, and the left end cover and the right end cover are symmetrically arranged relative to the valve body.

10. The two-position five-way ceramic slide type electromagnetic valve according to claim 1, characterized in that: the bottom of valve body is provided with the base, be equipped with a plurality of gas pockets on the base, and a plurality of the gas pocket respectively with first gas vent, first gas outlet, air inlet, second gas outlet and second gas vent one-to-one setting.