CN218780833U

CN218780833U - Pilot-operated type piston electromagnetic valve

Info

Publication number: CN218780833U
Application number: CN202221939291.7U
Authority: CN
Inventors: 幸桦; 王波; 王雄; 徐敏; 俞振宏
Original assignee: Ossur Hydraulics Ningbo Co ltd
Current assignee: Ossur Hydraulics Ningbo Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2023-03-31
Anticipated expiration: 2032-07-26

Abstract

The utility model discloses a guide's formula piston solenoid valve, concretely relates to solenoid valve technical field, which comprises a valve body, the top surface of valve body is equipped with and is used for inclosed valve gap, valve gap top surface one side is equipped with the coil box that provides the electromagnetism, coil box surface one side is equipped with the power supply box that is used for providing power, valve body inner arm middle part is equipped with and is used for fixed mount. A guide's formula piston solenoid valve, in the actual work, when liquid pressure is not enough to promote the piston, alright through the inside third spring of pressure-increasing pole and transfer line cooperation, supplementary liquid promotes the piston, the effectual condition of unable promotion piston when having avoided because the pressure of liquid is not enough, during the power failure, can insert the top surface of piston with the opening part that the rotary rod was equipped with through the valve gap top surface, be equipped with the thread through the rotary rod surface, make the staff rotate the rotary rod alright drive the piston and go up and down, thereby effectively avoided because the process of power failure influence work.

Description

Pilot-operated type piston electromagnetic valve

Technical Field

The utility model relates to a solenoid valve technical field, in particular to guide's formula piston solenoid valve.

Background

The electromagnetic valve is an automatic basic element for controlling the flow of fluid or gas by utilizing an electromagnetic principle, belongs to an actuator, is mainly used in an industrial control system for adjusting the direction, flow, speed and other parameters of a medium, and is divided into three types, namely a direct-acting type, a step-by-step direct-acting type and a pilot type according to the working principle, wherein when the pilot type electromagnetic valve is electrified, an electromagnetic coil generates electromagnetic force to lift a closing part from a valve seat, a pilot valve opening is opened, at the moment, a low-upper pressure difference and a high-lower pressure difference are formed around a main valve core, and under the action of the pressure difference, the fluid pressure pushes the main valve core to move upwards to open the main valve opening; when the power is cut off, the electromagnetic force disappears, and the closing member is pressed to close the main valve port under the action of self gravity.

The existing pilot-operated solenoid valve needs liquid to have certain pressure when liquid pressure pushes a main valve core, if the liquid pressure is not enough to push the main valve core, the liquid cannot normally circulate, and when the solenoid valve is powered off, a worker is required to connect a manual valve, so that the working process is influenced.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide a pilot operated piston solenoid valve, which can effectively solve the problem that the hydraulic pressure is not enough to push away the main valve core and the power failure affects the working process.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a pilot piston electromagnetic valve comprises a valve body, wherein a valve cover for sealing is arranged on the top surface of the valve body, a coil box for providing electromagnetism is arranged on one side of the top surface of the valve cover, and a power supply box for providing power is arranged on one side of the outer surface of the coil box;

a fixing frame for fixing is arranged in the middle of the inner arm of the valve body, a partition plate for separating the barriers is arranged on one side of the inner wall of the valve body, which is far away from the fixing frame, a rotating rod for manual rotation is arranged on the outer top surface of the valve cover, a main cavity is arranged in the valve cover, the top surface fixed mounting has first spring in the main cavity, the one end fixed mounting that the top surface was kept away from in the main cavity to first spring has the piston, and bottom surface one side of piston is equipped with first passageway, the bottom surface center fixed mounting of piston has the pressure boost pole.

Preferably, the inside of valve gap is equipped with the subchamber, the inside movable mounting of subchamber has the movable rod, and the bottom surface of subchamber is equipped with the second passageway that extends to the valve body, one side inner wall of subchamber is equipped with the opening of connecting the main cavity room, the inside fixed mounting of coil box has the core head of deciding, the one end fixed mounting of deciding the core head has the second spring, and second spring and movable rod fixed connection, the outside of coil box when the other end of deciding the core head extends, and the outer fixed mounting that the core head extends the coil box has the set screw.

Preferably, a rubber layer covering the second channel is fixedly mounted on the bottom surface of the movable rod.

Preferably, the pressure increasing rod comprises a shell, a third spring and a transmission rod, the shell is fixedly connected with the center of the bottom surface of the piston, the third spring is fixedly connected with the inner top surface of the shell, and one end, far away from the inner top surface of the shell, of the third spring is fixedly connected with the transmission rod.

Preferably, a fourth spring is fixedly mounted on the inner side of the bottom of the rotating rod, and limiting balls are fixedly mounted at two ends of the fourth spring.

Preferably, the middle part of the outer surface of the piston is sleeved with a rubber ring, and the top surface of the piston is provided with a limiting hole with the same size as the limiting ball.

Preferably, an opening is formed in the outer top surface of the valve cover, which is located in the main chamber, and a sealing cover is fixedly mounted at the opening of the outer top surface of the valve cover.

Preferably, a rubber ring is fixedly installed at a contact position of the core fixing head and the coil box.

Compared with the prior art, the utility model discloses following beneficial effect has:

the utility model discloses a guide's formula piston solenoid valve, bottom surface center fixed mounting pressure boost pole through the piston, in actual work, when liquid pressure is not enough to promote the piston, alright through the inside third spring and the transfer line cooperation of pressure boost pole, the auxiliary liquid promotes the piston, the effectual condition of unable piston that promotes when the pressure of having avoided because of liquid is not enough, simultaneously when having a power failure, can insert the top surface of piston with the opening part that the rotary rod passes through the valve gap top surface and is equipped with, be equipped with the thread through the rotary rod surface, make the staff rotate the rotary rod alright drive the piston and go up and down, thereby effectively avoided because the process of having a power failure influence work.

Drawings

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

fig. 2 is a schematic diagram of the overall structure of the present invention;

FIG. 3 is a schematic overall sectional view of the present invention;

fig. 4 is a schematic sectional view of the pressure increasing rod of the present invention;

fig. 5 is a schematic view of the structure of the rotating rod of the present invention.

In the figure: 1. a valve body; 2. a valve cover; 3. a coil box; 4. a power supply box; 5. a piston; 6. a first spring; 7. rotating the rod; 8. a movable rod; 9. a second spring; 10. core setting; 11. fixing screws; 101. a fixed mount; 102. a partition plate; 103. a second channel; 104. a first channel; 105. a main chamber; 106. a secondary chamber; 501. a pressure increasing lever; 5011. a housing; 5012. a third spring; 5013. a transmission rod; 701. a fourth spring; 702. and a limiting ball.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

The utility model discloses a guide's formula piston 5 solenoid valve, as shown in fig. 1-3, including valve body 1, valve body 1's top surface is equipped with and is used for inclosed valve gap 2, valve body 1's top surface four corners all has the same screw hole of size with valve gap 2's bottom surface four corners, thereby be convenient for valve body 1 and valve gap 2 carry out fixed connection through the screw, thereby also be convenient for maintain and maintain the solenoid valve, valve gap 2 top surface one side is equipped with coil box 3 that provides the electromagnetism, coil box 3's inside has solenoid, provide power for the operation of solenoid valve, coil box 3 surface one side is equipped with power supply box 4 that is used for providing power, power supply box 4 can provide power for solenoid's operation, external power supply is connected to power supply box 4 also can the electrical system simultaneously, thereby be convenient for the continuous operation of solenoid valve.

The middle part of the inner arm of the valve body 1 is provided with a fixed frame 101 for fixing, one side of the inner wall of the valve body 1, which is far away from the fixed frame 101, is provided with a partition plate 102 for separating the shelves, the partition plate 102 is used for limiting the liquid flow in the valve body 1, the inside of the valve cover 2 is provided with a main chamber 105, the inner top surface of the main chamber 105 is fixedly provided with a first spring 6, the first spring 6 is far away from one end of the inner top surface of the main chamber 105 and is fixedly provided with a piston 5, the piston 5 can extrude the first spring 6 due to the pressure of the liquid, so that the piston 5 can move, one side of the bottom surface of the piston 5 is provided with a first channel 104, the center of the bottom surface of the piston 5 is fixedly provided with a pressure increasing rod 501, when the pressure of the pressure increasing rod 501 makes the pressure of the liquid insufficient, the piston 5 can be pushed, and the liquid can be circulated.

It should be noted that the pressurizing rod 501 is inserted into the fixing frame 101 when descending, and the fixing frame 101 can effectively prevent the first spring 6 fixedly connected with the piston 5 from being deformed due to the impact force of the liquid, thereby prolonging the service life of the first spring 6.

Following closely above-mentioned practical example, the inside of valve gap 2 is equipped with sub-chamber 106, sub-chamber 106's inside movable mounting has movable rod 8, and sub-chamber 106's bottom surface is equipped with the second passageway 103 that extends to valve body 1, movable rod 8 can cover the entry of second passageway 103, movable rod 8's bottom surface fixed mounting has the rubber layer that covers second passageway 103, the rubber layer can be effectual prevent when movable rod 8 covers second passageway 103, liquid flows out from the gap, one side inner wall of sub-chamber 106 is equipped with the opening of connecting main cavity 105, liquid can flow into sub-chamber 106 by main cavity 105, make the upper and lower part of piston 5 have certain pressure differential, thereby be convenient for remove piston 5.

The inside fixed mounting of coil box 3 has the core head 10, the one end fixed mounting of core head 10 has second spring 9, and second spring 9 and movable rod 8 fixed connection, the outside of coil box 3 when the other end of core head 10 extends, and the outer fixed surface that core head 10 extends coil box 3 installs fixed screw 11, be convenient for through fixed screw 11 core head 10 and coil box 3 dismantlement and installation, and then be convenient for to its subsequent maintenance and maintenance, thereby the cost of maintenance has been reduced, and through the inside solenoid of coil box 3, produce magnetic force and make second spring 9 flexible, and then drive movable rod 8 entry lift, just can drive movable rod 8 when second spring 9 shortens and rise, when cutting off the power supply, movable rod 8 just can descend because the elasticity of second spring 9 and self weight, cooperation rubber circle, thereby cover second passageway 103.

It should be noted that, a rubber ring is fixedly installed at the contact position of the fixed core head 10 and the coil box 3, and the rubber ring can effectively prevent moisture from entering the coil box 3, so that the coil box 3 is prevented from being damaged due to moisture, the possibility of short circuit of the coil is reduced, and the service life of the coil box 3 is further prolonged.

When the pressure of the fluid is not enough to push the piston 5, the fluid cannot normally circulate, and for this reason, as shown in fig. 4, the pressure-increasing rod 501 includes a housing 5011, a third spring 5012, and a transmission rod 5013, the housing 5011 is fixedly connected to the center of the bottom surface of the piston 5, the third spring 5012 is fixedly connected to the inner top surface of the housing 5011, one end of the third spring 5012, which is far from the inner top surface of the housing 5011, is fixedly connected to the transmission rod 5013, the third spring 5012 may drive the transmission rod 5013 to ascend and descend inside the housing 5011 by elasticity, and when the pressure of the fluid is not enough to push the piston 5, the pressure of the fluid cooperates with the elasticity of the third spring 5012 to push the piston 5.

It should be noted that the elastic force of the first spring 6 is larger than that of the third spring 5012, and the third spring 5012 is in a compressed state by the elastic force of the first spring 6 every time the pressure increasing lever 501 is inserted into the holder 101.

When having a power failure, the unable normal operating of solenoid valve, just can need staff's cooperation manual valve, thereby influence the efficiency of work, for this reason, as shown in fig. 5, the inboard fixed mounting in bottom of rotary rod 7 has fourth spring 701, the equal fixed mounting in both ends of fourth spring 701 has spacing ball 702, and, piston 5's top surface is equipped with the opening, and piston 5's opening part inside is equipped with the spacing hole the same with spacing ball 702 size, when having a power failure, alright insert rotary rod 7 the opening part of piston 5, and spacing ball 702 just can block because the elasticity of fourth spring 701 and spacing hole, through rotating rotary rod 7, just can drive piston 5 and rise, make the circulation that liquid can be normal.

It should be noted that the valve cover 2 is provided with an opening on the outer top surface of the main chamber 105, and a sealing cover is fixedly mounted on the opening on the outer top surface of the valve cover 2, a threaded groove is arranged inside the opening on the top surface of the valve cover 2, and a thread is arranged on the outer surface of the rotating rod 7, and the rotating rod 7 can be lifted or lowered by rotating the rotating rod 7 through the engagement of the threaded groove and the thread, and the sealing cover is in a closed state when the electromagnetic valve normally operates, and when power is off, the sealing cover can be opened, and the rotating rod 7 is inserted into the opening on the top surface of the piston 5 through the opening on the top surface of the valve cover 2.

The utility model discloses a theory of operation does: when the electromagnetic valve needs to be opened, after the coil in the coil box 3 is powered on, the second spring 9 is shortened, so that the movable rod 8 is driven to leave the second channel 103, liquid flows into the first channel 104 from the water inlet inside the valve body 1 and then flows into the auxiliary chamber 106 through the first channel 104, and then flows into the second channel 103, so that pressure difference exists between the upper part and the lower part of the main chamber 105, if the pressure of the liquid is insufficient, the liquid is matched with the third spring 5012 inside the pressure increasing rod 501 to further push the piston 5 to open the valve, when the electromagnetic valve needs to be closed, the power is cut off, the movable rod 8 has the elasticity of the second spring 9 and the self weight to cover the pressure increasing rod 501 again, so that the pressure difference of the main chamber 105 disappears, the piston 5 is pressed down to the partition plate 102 by virtue of the elasticity of the first spring 6, and the pressure increasing rod 501 is inserted into the fixed frame 101, so that the circulation of the liquid is blocked.

The foregoing shows and describes the basic principles and principal features of the invention, together with the advantages thereof. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A pilot operated piston solenoid valve, includes valve body (1), its characterized in that: the top surface of the valve body (1) is provided with a valve cover (2) for sealing, one side of the top surface of the valve cover (2) is provided with a coil box (3) for providing electromagnetism, and one side of the outer surface of the coil box (3) is provided with a power supply box (4) for providing power;

valve body (1) inner arm middle part is equipped with and is used for fixed mount (101), one side that mount (101) were kept away from to valve body (1) inner wall is equipped with baffle (102) that are used for separating the shelves, the outer top surface of valve gap (2) is equipped with and is used for manual pivoted rotary rod (7), valve gap (2) inside is equipped with main cavity room (105), main cavity room (105) inner top surface fixed mounting has first spring (6), the one end fixed mounting that main cavity room (105) inner top surface was kept away from in first spring (6) has piston (5), and is equipped with first passageway (104) on one side of the bottom surface of piston (5), the bottom surface center fixed mounting of piston (5) has pressure boost pole (501).

2. A pilot operated piston solenoid valve as claimed in claim 1 wherein: the inside of valve gap (2) is equipped with subchamber (106), the inside movable mounting of subchamber (106) has movable rod (8), and the bottom surface of subchamber (106) is equipped with second passageway (103) that extend to valve body (1), one side inner wall of subchamber (106) is equipped with the opening of connecting main cavity room (105), coil box (3) inside fixed mounting has decides core head (10), the one end fixed mounting who decides core head (10) has second spring (9), and second spring (9) and movable rod (8) fixed connection, the outside of coil box (3) when the other end of deciding core head (10) extends, and the outer fixed surface that decides core head (10) and extend coil box (3) installs fixed screw (11).

3. A pilot operated piston solenoid valve as claimed in claim 2 wherein: and a rubber layer covering the second channel (103) is fixedly arranged on the bottom surface of the movable rod (8).

4. A pilot operated piston solenoid valve as claimed in claim 1 wherein: the booster rod (501) comprises a housing (5011), a third spring (5012) and a transmission rod (5013), the housing (5011) is fixedly connected with the center of the bottom surface of the piston (5), the third spring (5012) is fixedly connected with the inner top surface of the housing (5011), and one end, far away from the inner top surface of the housing (5011), of the third spring (5012) is fixedly connected with the transmission rod (5013).

5. A pilot operated piston solenoid valve as claimed in claim 1 wherein: the inboard fixed mounting in bottom of rotary rod (7) has fourth spring (701), the equal fixed mounting in both ends of fourth spring (701) has spacing ball (702).

6. A pilot operated piston solenoid valve as described in claim 1 wherein: the middle part of the outer surface of the piston (5) is sleeved with a rubber ring, and the top surface of the piston (5) is provided with a limiting hole with the same size as the limiting ball (702).

7. A pilot operated piston solenoid valve as described in claim 1 wherein: the outer top surface that valve gap (2) is located main cavity (105) is equipped with the opening, and the opening part fixed mounting of the outer top surface of valve gap (2) has sealed lid.

8. A pilot operated piston solenoid valve as claimed in claim 2 wherein: and a rubber ring is fixedly arranged at the contact part of the core fixing head (10) and the coil box (3).