CN216666569U

CN216666569U - Ceramic sealing electromagnetic valve

Info

Publication number: CN216666569U
Application number: CN202122811221.5U
Authority: CN
Inventors: 毛信强; 张优波; 单位银; 王琼; 唐东; 竺超燕
Original assignee: Ningbo Sono Manufacturing Co ltd
Current assignee: Ningbo Sono Manufacturing Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-06-03
Anticipated expiration: 2031-11-17

Abstract

The utility model discloses a ceramic sealing electromagnetic valve, which comprises a valve body, a valve plate fixedly connected to the bottom of the valve body and a ceramic sliding plate fixedly connected to the inner side of the valve plate, wherein a valve cavity is arranged in the valve body, a valve rod is arranged in the valve cavity, one end of the valve rod is connected with a small piston, the other end of the valve rod is connected with a large piston, one side of the valve body corresponding to the large piston is fixedly connected with a pilot valve component, the bottom of the valve rod is fixedly connected with a sliding block in sliding fit with the ceramic sliding plate, one side of the valve rod corresponding to the small piston can be penetrated by the valve rod and the sliding block which are fixedly connected into a whole, one end of the valve body corresponding to the small piston is provided with a piston sleeve, the inner wall of the piston sleeve is in sliding fit with the small piston, the large piston is in sliding fit with the inner wall of the valve body, through the structural improvement of the valve body and the piston sleeve, the sliding block and the valve rod which are fixedly connected into a whole can be directly assembled into the valve cavity from the left side of the valve body, thereby greatly improving the assembly efficiency, meanwhile, a filter screen is arranged between the valve plate and the ceramic sliding plate to prevent foreign matters in the air cylinder and the connecting air pipe from entering the electromagnetic valve.

Description

Ceramic sealing electromagnetic valve

Technical Field

The utility model relates to the technical field of electromagnetic valves, in particular to a ceramic sealing 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-way solenoid valve on the market, usually with above-mentioned five gas ports setting on the different sides of valve body, lead to the whole valve when installation need with the help of a plurality of couplings, especially when cooperateing 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 No. 201510545795.9) also discloses a two-position five-way bottom connection type solenoid valve, which can directly assemble the valve body on the bus board or the base without connecting the pipe joint by arranging five gas ports on the same side wall of the valve body, thereby greatly reducing complex wiring work, making the assembly and disassembly more convenient, and improving the reliability of the system work.

However, the flat ring on the valve rod of the electromagnetic valve is easy to wear to cause air tightness reduction, and therefore, Chinese patent (with application number of CN 201720392461.7) 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 the bottom of the valve body is provided with a valve plate, a ceramic sliding plate is fixed on the inner side wall of the valve plate, the middle part of the valve rod is provided with a sliding block which is in sliding fit with the ceramic sliding plate, and the side surface of the sliding block, which is attached to the ceramic sliding plate, is provided with a first groove and a second groove; 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.

However, the two-position five-way ceramic sliding plate type electromagnetic valve has certain defects: 1. the valve rod and the sliding block arranged at the lower part of the valve rod are connected into a whole by gluing, compression joint or fasteners, and the valve rod needs to be installed in a valve cavity of the valve body firstly and then the sliding block is fixedly connected with the valve rod installed in the valve cavity due to the structural limitation of the valve body during assembly, so that the assembly is inconvenient; 2. foreign matters and dust in the cylinder or the pipeline easily enter the electromagnetic valve to cause the electromagnetic valve to be blocked.

Disclosure of Invention

The utility model aims to provide a ceramic sealing electromagnetic valve, which can directly assemble a slide block and a valve rod which are fixedly connected into a whole into a valve cavity by improving the structure of a valve body and a piston sleeve, thereby greatly improving the assembly efficiency, and simultaneously, a filter screen is arranged between a valve plate and a ceramic sliding plate to prevent foreign matters in a cylinder and a connecting air pipe from entering the electromagnetic valve.

The technical purpose of the utility model is realized by the following technical scheme: ceramic seal solenoid valve, including valve body, fixed connection in the valve plate of valve body bottom and fixed connection in the inboard ceramic slide of valve plate, be equipped with the valve pocket in the valve body, the valve rod has been put to the valve pocket contents, the one end of valve rod is connected with little piston, the other end of valve rod is connected with big piston, one side fixedly connected with pilot valve subassembly, its characterized in that the valve body corresponds big piston: the valve rod bottom fixedly connected with and the ceramic slide sliding fit's slider, one side that the valve rod corresponds little piston can supply to link firmly valve rod and slider as an organic whole to pass, the one end that the valve body corresponds little piston is equipped with the piston cover, the inner wall and the little piston sliding fit of piston cover, big piston and valve body inner wall sliding fit.

Furthermore, the inner wall of one side of the valve body, which corresponds to the small piston, is provided with a protruding part which is flush with the upper end face of the ceramic sliding plate, the sliding block can extend into the valve cavity along the protruding part and the valve rod together, and the inner end of the piston sleeve is provided with a step part which is in limit fit with the protruding part.

Further, the inner end of the piston sleeve extends to the ceramic sliding plate, and the inner end of the piston sleeve is in limit fit with the ceramic sliding plate.

Furthermore, the inner wall of the valve body, which corresponds to one side of the small piston, is provided with an inner convex part corresponding to the ceramic sliding plate, the upper end surface of the inner convex part is lower than the upper end surface of the ceramic sliding plate, and the inner end of the piston sleeve is provided with a step part in limit fit with the inner convex part.

Furthermore, the inner end of the piston sleeve is provided with a limiting step which is in limiting fit with the ceramic sliding plate.

Further, the valve plate is provided with gas vent R, gas outlet A, air inlet P, gas outlet B and gas vent S with the cooperation of ceramic slide from a left side to the right side, one side that the slider corresponds ceramic slide is equipped with first recess and the second recess that is used for carrying on the gas circuit and switches.

Furthermore, filter screens are respectively arranged between the valve plate and the ceramic sliding plate at positions corresponding to the exhaust port R, the air outlet A, the air inlet P, the air outlet B and the exhaust port S.

Further, the valve plate is provided with a mounting groove corresponding to the filter screen, the filter screen is arranged in the mounting groove, and a sealing gasket is clamped between the filter screen and the inner end of the mounting groove.

Further, the valve body includes valve body and left end lid and right-hand member lid fixed mounting in valve body both ends, be equipped with left cavity between left end lid and the little piston, be equipped with right cavity between right end lid and the big piston, the one end fixedly connected with fixed block that the valve body corresponds little piston, the fixed block is equipped with the first air flue of intercommunication left cavity and valve pocket with the valve body, the valve body is equipped with the second air flue of intercommunication valve pocket and pilot valve subassembly and the third air flue of intercommunication pilot valve subassembly and right cavity, the pilot valve subassembly is used for switching on and cuts off second air flue and third air flue.

Further, the bottom of valve body is equipped with the base, the base is equipped with a plurality of gas pockets, and a plurality of the gas pocket sets up with gas vent R, gas outlet A, air inlet P, gas outlet B and gas vent S one-to-one respectively.

In conclusion, the utility model has the following beneficial effects:

through the structural improvement to valve body and piston bush, can directly assemble slider as an organic whole with the valve rod from the valve body left side (the one side that corresponds little piston) to the valve pocket with rigid coupling in, and then improved assembly efficiency greatly, set up the filter screen simultaneously between valve plate and ceramic slide in order to avoid the cylinder, connect the interior foreign matter of trachea and enter into the solenoid valve, and then improve the life of this solenoid valve.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is an enlarged view of the present invention at a.

Fig. 3 is an enlarged view of the present invention at B.

Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 5 is an enlarged view of the utility model at C.

In the figure: 1. a valve body; 11. a valve cavity; 12. a valve stem; 121. a small piston; 122. a large piston; 13. a piston sleeve; 131. a step portion; 132. a limiting step; 14. a boss portion; 15. an inner convex portion; 16. a left chamber; 161. a first air passage; 17. a right chamber; 171. a second air passage; 172. a third air passage; 2. a valve plate; 21. an exhaust port R; 22. an air outlet A; 23. an air inlet P; 24. an air outlet B; 25. an exhaust port S; 26. a filter screen; 27. a gasket; 3. a ceramic slide plate; 4. a pilot valve assembly; 5. a slider; 51. a first groove; 52. a second groove; 6. a fixed block; 7. a base.

Detailed Description

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

As shown in fig. 1-5, the ceramic sealing electromagnetic valve includes a valve body 1, a valve plate 2 fixedly connected to the bottom of the valve body 1, and a ceramic sliding plate 3 fixedly connected to the inner side of the valve plate 2, a valve cavity 11 is provided in the valve body 1, a valve rod 12 is accommodated in the valve cavity 11, one end of the valve rod 12 is connected to a small piston 121, the other end of the valve rod 12 is connected to a large piston 122, one side of the valve body 1 corresponding to the large piston 122 is fixedly connected to a pilot valve assembly 4, and the structure of the pilot valve assembly 4 can refer to a chinese patent (application number CN 201720392461.7).

Valve body 1 includes valve body and fixed mounting in the left end lid and the right-hand member lid at valve body both ends, be equipped with left cavity 16 between left end lid and the little piston 121, be equipped with right cavity 17 between right end lid and the big piston 122, the one end fixedly connected with fixed block 6 of valve body 1 correspondence little piston 121, fixed block 6 is equipped with the first air flue 161 of intercommunication left cavity 16 and valve pocket 11 with valve body 1, valve body 1 is equipped with the second air flue 171 of intercommunication valve pocket 11 and pilot valve subassembly 4 and the third air flue 172 of intercommunication pilot valve subassembly 4 and right cavity 17, pilot valve subassembly 4 is used for switching on and cuts off second air flue 171 and third air flue 172.

Valve plate 2 is provided with gas vent R21, gas outlet A22, air inlet P23, gas outlet B24 and gas vent S25 with ceramic slide 3 from a left side to the right side cooperation, one side that slider 5 corresponds ceramic slide 3 is equipped with first recess 51 and second recess 52 that are used for carrying on the gas circuit and switch, the bottom of valve body 1 is equipped with base 7, base 7 is equipped with a plurality of gas pockets, and is a plurality of the gas pocket sets up with gas vent R21, gas outlet A22, air inlet P23, gas outlet B24 and gas vent S25 one-to-one respectively.

The bottom of the valve rod 12 is fixedly connected with a sliding block 5 which is matched with the ceramic sliding plate 3 in a sliding manner, one side of the valve rod 12, corresponding to the small piston 121, can be used for fixedly connecting the valve rod 12 and the sliding block 5 into a whole to penetrate through, one end of the valve body 1, corresponding to the small piston 121, is provided with a piston sleeve 13, the inner wall of the piston sleeve 13 is matched with the small piston 121 in a sliding manner, and the large piston 122 is matched with the inner wall of the valve body 1 in a sliding manner.

The first embodiment is as follows: the inner wall of the valve body 1 corresponding to one side of the small piston 121 is provided with a protruding portion 14 which is flush with the upper end face of the ceramic sliding plate 3, the sliding block 5 can extend into the valve cavity 11 together with the valve rod 12 along the protruding portion 14, the inner end of the piston sleeve 13 is provided with a step portion 131 which is in limit fit with the protruding portion 14, the valve rod 12 and the sliding block 5 which are fixedly connected into a whole are inserted into the valve cavity 11, the piston sleeve 13 is inserted into the valve body 1, or the piston sleeve 13 and the valve rod 12 are assembled with the sliding block 5 together into the valve cavity 11 after being assembled, and the piston sleeve 13 is fixed through the protruding portion 14 and the left end cover of the valve body 1.

The inner of piston bush 13 extends to ceramic slide 3, and the inner of piston bush 13 and the spacing cooperation of ceramic slide 3 are used for spacing ceramic slide 3 through this setting.

The second embodiment: the inner wall of the valve body 1 corresponding to one side of the small piston 121 is provided with an inner convex portion 15 corresponding to the ceramic sliding plate 3, the upper end surface of the inner convex portion 15 is lower than the upper end surface of the ceramic sliding plate 3, the inner end of the piston sleeve 13 is provided with a step portion 131 in limit fit with the inner convex portion 15, and the installation process of the piston sleeve can refer to the first embodiment.

The inner end of the piston sleeve 13 is provided with a limiting step 132 in limiting fit with the ceramic sliding plate 3, and the limiting step 132 is used for limiting the ceramic sliding plate 3.

Through the structural improvement of the valve body 1 and the piston sleeve 13, the slider 5 and the valve rod 12 which are fixedly connected into a whole can be directly assembled into the valve cavity 11 from the left side (corresponding to one side of the small piston 121) of the valve body 1, and the assembly efficiency is further greatly improved.

The position that corresponds exhaust port R21, gas outlet A22, air inlet P23, gas outlet B24 and gas outlet S25 between valve plate 2 and the ceramic slide 3 is equipped with filter screen 26 respectively, valve plate 2 corresponds filter screen 26' S position and is equipped with the mounting groove, be equipped with filter screen 26 in the mounting groove, the clamp has sealed the pad 27 between the inner of filter screen 26 and mounting groove, sets up filter screen 26 between valve plate 2 and ceramic slide 3 in order to avoid the cylinder, connect the interior foreign matter of trachea and enter into the solenoid valve, and then improve the life of this solenoid valve.

The basic working principle of the utility model is as follows:

in an initial state, the pilot valve assembly 4 is not energized, at this time, compressed gas is introduced into the gas inlet P23, part of the compressed gas in the gas inlet P23 flows into the valve cavity 11 and flows into the left chamber 16 through the first gas passage 161, so that the pressure of the left chamber 16 is increased, the small piston 121 is pressed and drives the valve rod 12 to move rightwards, the slider 5 also moves synchronously with the valve rod 12, at this time, the gas inlet P23 is communicated with the gas outlet a22, the gas outlet B24 is communicated with the gas outlet S25, and the gas outlet R21 is closed; when the pilot valve assembly 4 is powered on, the movable iron core of the pilot valve assembly 4 is attracted by the static iron core, so that the second air passage 171 and the third air passage 172 are communicated, the gas in the valve cavity 11 flows into the right chamber 17 through the second air passage 171 and the third air passage 172, the pressure of the right chamber 17 is increased, because the pressure area of the large piston 122 is larger than the pressure area of the small piston 121, the large piston 122 can push the valve rod 12 to move leftwards under the action of pressure difference, the sliding block 5 also synchronously moves leftwards, at the moment, the gas inlet P23 is communicated with the gas outlet B24, the gas outlet R21 is communicated with the gas outlet A22, and the gas outlet S25 is closed, so that gas circuit switching is realized; when the pilot valve assembly 4 is powered off again, the movable iron core of the pilot valve assembly 4 resets to separate the second air passage 171 from the third air passage 172, the gas in the right chamber 17 is discharged through the exhaust passage of the pilot valve assembly 4, the pressure in the right chamber 17 is reduced, the small piston 121 pushes the valve rod 12 to move rightwards again, and therefore gas path switching is achieved again.

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 patent application are included in the present patent application.

Claims

1. Ceramic seal solenoid valve, including valve body (1), fixed connection in valve plate (2) and the ceramic slide (3) of fixed connection in valve plate (2) inboard of valve body (1) bottom, be equipped with valve pocket (11) in valve body (1), valve rod (12) have been put in valve pocket (11), the one end of valve rod (12) is connected with little piston (121), the other end of valve rod (12) is connected with big piston (122), one side fixedly connected with pilot valve subassembly (4), its characterized in that of big piston (122) are corresponded in valve body (1): valve rod (12) bottom fixedly connected with and ceramic slide (3) complex slider (5) that slides, one side that valve rod (12) correspond little piston (121) can supply to link firmly valve rod (12) and slider (5) as an organic whole and pass, the one end that valve body (1) corresponds little piston (121) is equipped with piston sleeve (13), the inner wall and little piston (121) sliding fit of piston sleeve (13), big piston (122) and valve body (1) inner wall sliding fit.

2. The ceramic seal solenoid valve of claim 1, wherein: the inner wall of one side, corresponding to the small piston (121), of the valve body (1) is provided with a protruding portion (14) which is flush with the upper end face of the ceramic sliding plate (3), the sliding block (5) can stretch into the valve cavity (11) along the protruding portion (14) and the valve rod (12), and the inner end of the piston sleeve (13) is provided with a step portion (131) which is in limit fit with the protruding portion (14).

3. The ceramic seal solenoid valve of claim 2, wherein: the inner end of the piston sleeve (13) extends to the ceramic sliding plate (3), and the inner end of the piston sleeve (13) is in limit fit with the ceramic sliding plate (3).

4. The ceramic seal solenoid valve of claim 1, wherein: the inner wall of one side of the valve body (1) corresponding to the small piston (121) is provided with an inner convex part (15) corresponding to the ceramic sliding plate (3), the upper end face of the inner convex part (15) is lower than the upper end face of the ceramic sliding plate (3), and the inner end of the piston sleeve (13) is provided with a step part (131) in limit fit with the inner convex part (15).

5. The ceramic seal solenoid valve of claim 4, wherein: the inner end of the piston sleeve (13) is provided with a limiting step (132) which is in limiting fit with the ceramic sliding plate (3).

6. The ceramic seal solenoid valve of any one of claims 1 to 5, wherein: valve plate (2) and ceramic slide (3) are provided with gas vent R (21), gas outlet A, air inlet P, gas outlet B (24) and gas vent S (25) from a left side to the right side cooperation, one side that slider (5) correspond ceramic slide (3) is equipped with first recess (51) and second recess (52) that are used for carrying on the gas circuit and switch.

7. The ceramic seal solenoid valve of claim 6, wherein: and filter screens (26) are respectively arranged between the valve plate (2) and the ceramic sliding plate (3) at positions corresponding to the exhaust port R (21), the air outlet A (22), the air inlet P (23), the air outlet B (24) and the exhaust port S (25).

8. The ceramic seal solenoid valve of claim 7, wherein: the valve plate (2) is equipped with the mounting groove corresponding to the position of filter screen (26), be equipped with filter screen (26) in the mounting groove, the clamp is put sealed pad (27) between the inner of filter screen (26) and mounting groove.

9. The ceramic seal solenoid valve of claim 8, wherein: valve body (1) includes valve body and fixed mounting in left end lid and the right-hand member lid at valve body both ends, be equipped with left cavity (16) between left end lid and little piston (121), be equipped with right cavity (17) between right end lid and big piston (122), the one end fixedly connected with fixed block (6) of valve body (1) correspondence little piston (121), fixed block (6) are equipped with first air flue (161) of intercommunication left cavity (16) and valve pocket (11) with valve body (1), valve body (1) are equipped with second air flue (171) and the third air flue (172) of intercommunication pilot valve subassembly (4) and right cavity (17) of intercommunication valve pocket (11) and pilot valve subassembly (4), pilot valve subassembly (4) are used for switching on and cut off second air flue (171) and third air flue (172).

10. The ceramic seal solenoid valve of claim 9, wherein: the bottom of valve body (1) is equipped with base (7), base (7) are equipped with a plurality of gas pockets, and is a plurality of the gas pocket sets up with gas vent R (21), gas outlet A (22), air inlet P (23), gas outlet B (24) and gas vent S (25) one-to-one respectively.