Guiding, positioning and sealing device for pilot-operated type electromagnetic valve

Abstract

The utility model relates to the technical field of electromagnetic valves, and discloses a pilot-operated type electromagnetic valve guiding, positioning and sealing device, which solves the problem that a main valve core does not have a better positioning and sealing effect under high water pressure, and comprises a main valve body, the upper surface of the main valve body is fixedly connected with an electromagnetic cover, and the upper surface of the main valve body is fixedly connected with the electromagnetic cover. A sealing assembly used for controlling water inlet and outlet is arranged in the main valve body and comprises a fixing ring, an upper cavity and a lower cavity are formed in the main valve body, the fixing ring is fixedly connected to the inner wall of the upper cavity, a main valve element is fixedly connected to the bottom face of the fixing ring, a connecting short rod is fixedly connected to the bottom face of the main valve element, and a limiting plate is fixedly connected to one side of the connecting short rod. A limiting groove is formed in the inner wall of the lower cavity, the limiting plate is slidably connected into the limiting groove, and the stable positioning and sealing effect is provided for the main valve element.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to a guiding, positioning and sealing device for a pilot electromagnetic valve. Background Art

[0002] A pilot solenoid valve is a hydraulic valve that uses a pilot hole to control the movement of the main valve core. It consists of a solenoid coil, a valve core, a valve seat, a valve body and other components. When working, the solenoid coil is energized to generate a magnetic field, which attracts the pilot valve core to move it, thereby changing the on-off state of the pilot hole and controlling the flow of hydraulic oil to both ends or one end of the main valve core, causing the main valve core to move accordingly, and ultimately achieving control of the fluid channel. The pilot solenoid valve has the characteristics of fast response speed and high control accuracy. However, when the solenoid valve is in use, the main valve core cannot be accurately positioned and sealed under the impact of strong water pressure, thereby affecting the water output effect when the valve is switched on and off, affecting normal use.

[0003] In view of the above problems, a pilot-operated solenoid valve guiding, positioning and sealing device is proposed to solve the above problems. Utility Model Content

[0004] The utility model aims to provide a pilot-operated electromagnetic valve guide positioning sealing device, which is used to work and solve the problem that the main valve core does not have a good positioning sealing effect under high water pressure.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pilot-operated solenoid valve guide positioning sealing device, comprising a main valve body, an electromagnetic cover is fixedly connected to the upper surface of the main valve body, and a sealing component for controlling water inlet and outlet is arranged inside the main valve body;

[0006] The sealing assembly includes a fixed ring, an upper chamber and a lower chamber are provided inside the main valve body, the fixed ring is fixedly connected to the inner wall of the upper chamber, the bottom surface of the fixed ring is movably connected to the main valve core, the upper chamber and the lower chamber are separated by the main valve core, a connecting short rod is fixedly connected to the bottom surface of the main valve core, one side of the connecting short rod is fixedly connected to a limit plate, a limit groove is provided on the inner wall of the lower chamber, and the limit plate is slidably connected to the inside of the limit groove.

[0007] Preferably, a mounting plate is fixedly connected to the inner wall of the upper chamber, an outer limit cylinder is fixedly connected to the bottom surface of the mounting plate, an inner limit cylinder is slidably connected to the bottom surface of the outer limit cylinder, an O-ring for sealing is arranged between the inner limit cylinder and the outer limit cylinder, a spring is fixedly connected to the bottom surface of the mounting plate, and one end of the spring is fixedly connected to the upper surface of the main valve core.

[0008] Preferably, a sealing ring is fixedly connected to the outer side of the main valve core, and the sealing ring fits against the inner wall of the lower chamber.

[0009] Preferably, the electromagnetic cover includes a valve stem connected to the upper surface of the main valve body, a pilot hole is opened inside the main valve body, a sealing disk is fixedly connected to the inner wall of the pilot hole, the valve stem and the sealing disk are arranged correspondingly, an electromagnetic coil is arranged on the inner wall of the electromagnetic cover, and the electromagnetic cover is connected to an external power supply.

[0010] Preferably, a rubber ring is fixedly connected to the inner wall of the sealing disk, a side groove is opened on the outer side of the valve stem, and the rubber ring is arranged corresponding to the side groove.

[0011] Preferably, a water inlet pipe is fixedly connected to the outside of the main valve body, and the water inlet pipe is communicated with the upper chamber. A water outlet pipe is also fixedly connected to the outside of the main valve body, and the water outlet pipe is communicated with the lower chamber and the pilot hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] The utility model proposes a pilot-operated solenoid valve guiding, positioning and sealing device. When the solenoid valve is in use, the main valve core cooperates with the lower chamber for sealing. When the valve is opened, the main valve core moves upward, and the connecting short rod drives the limit plate to allow the limit plate to slide inside the limit groove, which plays a guiding role in the movement of the main valve core and ensures the stability of the main valve core when moving. At the same time, when the valve is closed, the limit plate moves downward, which has a positioning effect on the main valve core seal. The spring plays an auxiliary effect for pressing the main valve core downward, and the outer limit cylinder cooperates with the inner limit cylinder to protect and guide the spring, thereby finally achieving the purpose of providing a stable positioning and sealing effect for the main valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the internal structure of the main valve body of the utility model;

[0016] Figure 3 This is a schematic diagram of the sealing assembly structure of the utility model;

[0017] Figure 4 For the utility model Figure 2 An enlarged schematic diagram of point A.

[0018] In the figure: 1. main valve body; 11. upper chamber; 12. lower chamber; 13. pilot hole; 14. outer limit cylinder; 15. inner limit cylinder; 16. spring; 17. mounting plate; 2. water inlet pipe; 3. water outlet pipe; 4. sealing assembly; 41. fixing ring; 42. main valve core; 421. sealing ring; 43. connecting short rod; 44. limit plate; 45. limit groove; 5. electromagnetic cover; 51. valve stem; 52. sealing plate; 53. rubber ring; 511. side groove. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0021] Combination Figure 1-Figure 2 A pilot solenoid valve guiding, positioning and sealing device comprises a main valve body 1, an electromagnetic cover 5 is fixedly connected to the upper surface of the main valve body 1, and a sealing component 4 for controlling water inlet and outlet is arranged inside the main valve body 1.

[0022] The utility model is further described below in conjunction with embodiments.

[0023] Combination Figure 2-Figure 4 The sealing assembly 4 includes a fixing ring 41. An upper chamber 11 and a lower chamber 12 are provided inside the main valve body 1. The fixing ring 41 is fixedly connected to the inner wall of the upper chamber 11. A main valve core 42 is movably connected to the bottom of the fixing ring 41. The upper chamber 11 and the lower chamber 12 are separated by the main valve core 42. A connecting short rod 43 is fixedly connected to the bottom of the main valve core 42. A limiting plate 44 is fixedly connected to one side of the connecting short rod 43. A limiting groove 45 is provided on the inner wall of the lower chamber 12. The limiting plate 44 is slidably connected to the inside of the limiting groove 45. 41. The main valve core 42, the connecting short rod 43, the limit plate 44 and the limit groove 45 are arranged. When the solenoid valve is in use, the main valve core 42 is used to cooperate with the lower chamber 12 for sealing. When the valve is opened, the main valve core 42 moves upward, and the connecting short rod 43 cooperates with the limit plate 44 to allow the limit plate 44 to slide inside the limit groove 45, which guides the movement of the main valve core 42 and ensures the stability of the main valve core 42 when moving. At the same time, when the valve is closed, the limit plate 44 moves downward to provide a positioning effect for the sealing of the main valve core 42.

[0024] An installation disk 17 is fixedly connected to the inner wall of the upper chamber 11, and an outer limit cylinder 14 is fixedly connected to the bottom surface of the installation disk 17. An inner limit cylinder 15 is slidably connected to the bottom surface of the outer limit cylinder 14. An O-ring for sealing is arranged between the inner limit cylinder 15 and the outer limit cylinder 14. A spring 16 is fixedly connected to the bottom surface of the installation disk 17, and one end of the spring 16 is fixedly connected to the upper surface of the main valve core 42. Through the arrangement of the outer limit cylinder 14, the inner limit cylinder 15, the spring 16 and the installation disk 17, during the up and down movement of the main valve core 42, the spring 16 plays an auxiliary effect in pressing down the main valve core 42, and the outer limit cylinder 14 cooperates with the inner limit cylinder 15 to protect the spring 16.

[0025] A sealing ring 421 is fixedly connected to the outer side of the main valve core 42 , and the sealing ring 421 is in contact with the inner wall of the lower chamber 12 . Through the arrangement of the sealing ring 421 , the sealing ring 421 is in contact with the lower chamber 12 to achieve a further sealing effect.

[0026] The electromagnetic cover 5 includes a valve stem 51 which is connected to the upper surface of the main valve body 1. A pilot hole 13 is opened inside the main valve body 1. A sealing disk 52 is fixedly connected to the inner wall of the pilot hole 13. The valve stem 51 and the sealing disk 52 are arranged correspondingly. An electromagnetic coil is arranged on the inner wall of the electromagnetic cover 5. The electromagnetic cover 5 is externally connected to a power source. Through the arrangement of the valve stem 51, the sealing disk 52 and the pilot hole 13, when controlling the switch valve, the valve stem 51 is controlled to rise and fall by the external power source, thereby connecting with the sealing disk 52, thereby sealing the pilot hole 13 and realizing the switch valve operation.

[0027] A rubber ring 53 is fixedly connected to the inner wall of the sealing disk 52, and a side groove 511 is opened on the outer side of the valve stem 51. The rubber ring 53 and the side groove 511 are arranged correspondingly. Through the arrangement of the rubber ring 53 and the side groove 511, when the valve stem 51 moves downward, the rubber ring 53 will fit the outer side of the valve stem 51 and deform downward until the rubber ring 53 is aligned with the side groove 511, and then the rubber ring 53 is stuck in the inside of the side groove 511, thereby achieving the effect of sealing and fixing.

[0028] An inlet pipe 2 is fixedly connected to the outside of the main valve body 1, and the inlet pipe 2 is connected to the upper chamber 11. An outlet pipe 3 is also fixedly connected to the outside of the main valve body 1, and the outlet pipe 3 is connected to the lower chamber 12 and the pilot hole 13. The setting of the inlet pipe 2 and the outlet pipe 3 achieves the effect of water inlet and water outlet.

[0029] Specifically, when the solenoid valve is in use, the main valve core 42 is used to cooperate with the lower chamber 12 for sealing. When the valve is opened, the main valve core 42 moves upward, and the connecting short rod 43 drives the limit plate 44 to move, allowing the limit plate 44 to slide inside the limit groove 45, which plays a guiding role in the movement of the main valve core 42 and ensures the stability of the main valve core 42 when moving. At the same time, when the valve is closed, the limit plate 44 moves downward, which has a positioning effect on the sealing of the main valve core 42, and the spring 16 plays an auxiliary effect in pressing down the main valve core 42. The outer limit cylinder 14 cooperates with the inner limit cylinder 15 to protect and guide the spring 16, and finally achieves the purpose of providing a stable positioning sealing effect for the main valve core 42.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pilot-operated electromagnetic valve guiding, positioning and sealing device, comprising a main valve body (1), an electromagnetic cover (5) being fixedly connected to the upper surface of the main valve body (1), characterized in that: A sealing component (4) for controlling water inflow and outflow is arranged inside the main valve body (1); The sealing assembly (4) comprises a fixing ring (41), an upper chamber (11) and a lower chamber (12) are provided inside the main valve body (1), the fixing ring (41) is fixedly connected to the inner wall of the upper chamber (11), the bottom surface of the fixing ring (41) is movably connected to the main valve core (42), the upper chamber (11) and the lower chamber (12) are separated by the main valve core (42), the bottom surface of the main valve core (42) is fixedly connected to a connecting short rod (43), one side of the connecting short rod (43) is fixedly connected to a limiting plate (44), the inner wall of the lower chamber (12) is provided with a limiting groove (45), and the limiting plate (44) is slidably connected to the inside of the limiting groove (45).

2. A pilot-operated solenoid valve guide, positioning and sealing device according to claim 1, characterized in that: The inner wall of the upper chamber (11) is fixedly connected to a mounting plate (17), the bottom surface of the mounting plate (17) is fixedly connected to an outer limiting cylinder (14), the bottom surface of the outer limiting cylinder (14) is slidably connected to an inner limiting cylinder (15), an O-ring for sealing is provided between the inner limiting cylinder (15) and the outer limiting cylinder (14), the bottom surface of the mounting plate (17) is fixedly connected to a spring (16), one end of the spring (16) is fixedly connected to the upper surface of the main valve core (42).

3. A pilot-operated solenoid valve guide, positioning and sealing device according to claim 1, characterized in that: A sealing ring (421) is fixedly connected to the outer side of the main valve core (42), and the sealing ring (421) is in contact with the inner wall of the lower chamber (12).

4. A pilot-operated solenoid valve guide, positioning and sealing device according to claim 1, characterized in that: The electromagnetic cover (5) comprises a valve stem (51) which penetrates and is connected to the upper surface of the main valve body (1); a pilot hole (13) is provided inside the main valve body (1); a sealing disk (52) is fixedly connected to the inner wall of the pilot hole (13); the valve stem (51) and the sealing disk (52) are arranged correspondingly; an electromagnetic coil is arranged on the inner wall of the electromagnetic cover (5); and the electromagnetic cover (5) is externally connected to a power source.

5. A pilot-operated solenoid valve guide, positioning and sealing device according to claim 4, characterized in that: A rubber ring (53) is fixedly connected to the inner wall of the sealing disk (52), a side groove (511) is opened on the outer side of the valve stem (51), and the rubber ring (53) and the side groove (511) are arranged correspondingly.

6. A pilot-operated solenoid valve guide, positioning and sealing device according to claim 3, characterized in that: The main valve body (1) is fixedly connected to an inlet pipe (2) on the outside, the inlet pipe (2) is in communication with the upper chamber (11), and the main valve body (1) is also fixedly connected to an outlet pipe (3) on the outside, the outlet pipe (3) is in communication with the lower chamber (12) and the pilot hole (13).

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