CN116241706A

CN116241706A - Reversible electromagnetic valve

Info

Publication number: CN116241706A
Application number: CN202111489240.9A
Authority: CN
Inventors: 熊匀均; 张克鹏
Original assignee: Zhejiang Dunan Artificial Environment Co Ltd
Current assignee: Zhejiang Dunan Artificial Environment Co Ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2023-06-09

Abstract

The present invention provides a reversible electromagnetic valve, comprising: the valve seat is arranged in the valve body, the valve seat is provided with a valve port, the valve core is slidably arranged in the valve seat to close or open the valve port, and the driving rod is in driving connection with the valve core; the first sealing seat is arranged in the valve body, the first sealing seat is provided with a mounting groove, an opening of the mounting groove is away from the valve seat, and the second sealing seat is arranged in the mounting groove; the first sealing ring and the second sealing ring are arranged in the first sealing seat, and the second sealing ring is arranged in the second sealing seat, wherein the driving rod penetrates through the first sealing ring and the second sealing ring. By the technical scheme provided by the invention, the problem that the sealing ring in the reversible electromagnetic valve is difficult to assemble in the prior art can be solved.

Description

Reversible electromagnetic valve

Technical Field

The invention relates to the technical field of electromagnetic valves, in particular to a reversible electromagnetic valve.

Background

At present, the solenoid valve mainly comprises structures such as a valve body, a valve seat, a valve core part, a sealing seat and the like, wherein the sealing seat, the valve seat and the valve core part are arranged in the valve body, and the valve port is closed or opened through the reciprocating motion of a valve core part. In the prior art, the sealing seat is generally welded with the valve body integrally, and the sealing ring is assembled in the sealing seat after the welding is finished, but the sealing ring is assembled in the sealing seat in the valve body, so that the problem of difficult assembly exists.

Disclosure of Invention

The invention provides a reversible electromagnetic valve, which solves the problem that a sealing ring in the reversible electromagnetic valve in the prior art is difficult to assemble.

In order to solve the above problems, the present invention provides a reversible electromagnetic valve comprising: the valve seat is arranged in the valve body, the valve seat is provided with a valve port, the valve core is slidably arranged in the valve seat to close or open the valve port, and the driving rod is in driving connection with the valve core; the first sealing seat is arranged in the valve body, the first sealing seat is provided with a mounting groove, an opening of the mounting groove is away from the valve seat, and the second sealing seat is arranged in the mounting groove; the first sealing ring and the second sealing ring are arranged in the first sealing seat, and the second sealing ring is arranged in the second sealing seat, wherein the driving rod penetrates through the first sealing ring and the second sealing ring.

Further, the first sealing seat is also provided with a first through hole and a sealing hole, the first through hole, the sealing hole and the mounting groove are sequentially communicated, the diameters of the first through hole, the sealing hole and the mounting groove are sequentially increased, and the first sealing ring is arranged in the sealing hole; the second sealing seat is provided with a second through hole, the inner wall of the second through hole is provided with a first sealing groove, the diameter of the second through hole is smaller than that of the sealing hole, and the second sealing ring is arranged in the first sealing groove.

Further, the axial dimension of the sealing hole is larger than that of the first sealing ring, the diameters of the first through hole and the second through hole are equal, and the dimensions of the first sealing ring and the second sealing ring are the same.

Further, the inner wall of the mounting groove is in threaded connection with the outer wall of the second sealing seat, or the inner wall of the mounting groove is in laser welding with the outer wall of the second sealing seat.

Further, the periphery of the opening of the mounting groove is provided with an annular flanging, the second sealing seat is pressed into the mounting groove from the opening of the mounting groove, and the annular flanging is riveted with the second sealing seat.

Further, before riveting, the annular flanging is L1 in depth of the mounting groove; the outer wall of the second sealing seat is cylindrical, the axial length of the second sealing seat is L2, L1 is more than L2, and the annular flanging is riveted with the end face of the second sealing seat.

Further, before riveting, the annular flanging is L1 in depth of the mounting groove; the outer wall of the second sealing seat is provided with a first circumferential surface, a stepped surface and a second circumferential surface which are sequentially arranged, the diameter of the first circumferential surface is larger than that of the second circumferential surface, the axial length of the first circumferential surface is L2, L1 is larger than L2, the first circumferential surface is matched with the inner wall of the mounting groove, and the annular flanging is riveted with the stepped surface.

Further, the bottom wall of the mounting groove is provided with a second sealing groove, the second sealing groove is arranged around the first sealing ring, the reversible electromagnetic valve further comprises a third sealing ring, the third sealing ring is arranged in the second sealing groove, and the end faces of the third sealing ring and the second sealing seat are in butt joint.

Further, a welding groove is formed in the outer wall of the first sealing seat, and the outer wall of the first sealing seat is welded with the inner wall of the valve body.

Further, the reversible electromagnetic valve further comprises a first end cover, a second end cover, a piston part, a first capillary tube and a second capillary tube, wherein the first end cover and the second end cover respectively block two ends of the valve body; the area between the first end cover, the first sealing seat and the valve body is a first cavity, the area between the first sealing seat, the piston part and the valve body is a second cavity, and the area between the piston part, the second end cover and the valve body is a third cavity, wherein the first capillary tube is communicated with the second cavity, and the second capillary tube is communicated with the third cavity.

By applying the technical scheme of the invention, a reversible electromagnetic valve is provided, which comprises the following components: the valve seat is arranged in the valve body, the valve seat is provided with a valve port, the valve core is slidably arranged in the valve seat to close or open the valve port, and the driving rod is in driving connection with the valve core; the first sealing seat is arranged in the valve body, the first sealing seat is provided with a mounting groove, an opening of the mounting groove is away from the valve seat, and the second sealing seat is arranged in the mounting groove; the first sealing ring and the second sealing ring are arranged in the first sealing seat, and the second sealing ring is arranged in the second sealing seat, wherein the driving rod penetrates through the first sealing ring and the second sealing ring. By adopting the scheme, the first sealing seat and the second sealing seat are arranged, the second sealing seat is arranged in the mounting groove, and the arrangement is that when the sealing device is assembled, the first sealing ring is firstly arranged in the first sealing seat, then the second sealing ring is arranged in the second sealing seat, and finally the second sealing seat with the second sealing ring is arranged in the mounting groove together. The valve core is slidably arranged in the valve seat, so that the valve port can be closed or opened, and the on-off function of the reversible electromagnetic valve is realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:

FIG. 1 shows a cross-sectional view of a reversible solenoid valve provided in accordance with a first embodiment of the present invention;

FIG. 2 shows an enlarged view of a portion of the structure of the reversible solenoid valve of FIG. 1;

FIG. 3 shows a cross-sectional view of the first seal housing of FIG. 1;

FIG. 4 shows a cross-sectional view of the second seal housing of FIG. 1;

FIG. 5 shows a cross-sectional view of a second seal seat in a reversible solenoid valve provided by a second embodiment of the invention;

fig. 6 shows a partial cross-sectional view of a reversible solenoid valve provided by a third embodiment of the invention.

Wherein the above figures include the following reference numerals:

10. a valve body;

20. a valve seat;

30. a valve core;

40. a driving rod;

50. a first seal seat; 51. a mounting groove; 511. annular flanging; 512. a second seal groove; 52. a first through hole; 53. sealing the hole; 54. a weld groove;

60. a second seal seat; 61. a second through hole; 611. a first seal groove; 62. a first circumferential surface; 63. a step surface; 64. a second circumferential surface;

70. a first seal ring;

80. a second seal ring;

91. a third seal ring; 92. a first end cap; 93. a second end cap; 94. a piston section; 95. a first capillary; 96. and a second capillary.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

As shown in fig. 1 to 4, according to a first embodiment of the present invention, there is provided a reversible electromagnetic valve including: the valve comprises a valve body 10, a valve seat 20, a valve core part 30 and a driving rod 40, wherein the valve seat 20 is arranged in the valve body 10, the valve seat 20 is provided with a valve port, the valve core part 30 is slidably arranged in the valve seat 20 so as to close or open the valve port, and the driving rod 40 is in driving connection with the valve core part 30; a first seal seat 50 and a second seal seat 60, the first seal seat 50 being disposed within the valve body 10, the first seal seat 50 having a mounting groove 51, an opening of the mounting groove 51 facing away from the valve seat 20, the second seal seat 60 being disposed within the mounting groove 51; a first seal ring 70 and a second seal ring 80, the first seal ring 70 being disposed in the first seal seat 50, the second seal ring 80 being disposed in the second seal seat 60, wherein the driving rod 40 passes through the first seal ring 70 and the second seal ring 80.

By adopting the scheme, the first sealing seat 50 and the second sealing seat 60 are arranged, the second sealing seat 60 is arranged in the mounting groove 51, and when the assembly is carried out, the first sealing ring 70 is firstly arranged in the first sealing seat 50, then the second sealing ring 80 is arranged in the second sealing seat 60, and finally the second sealing seat 60 with the second sealing ring 80 is arranged in the mounting groove 51 together. Wherein, the valve core 30 is slidably disposed in the valve seat 20, so that the valve port can be closed or opened, thereby realizing the on-off function of the reversible solenoid valve.

The first sealing seat 50 further has a first through hole 52 and a sealing hole 53, the first through hole 52, the sealing hole 53 and the mounting groove 51 are sequentially communicated, the diameters of the first through hole 52, the sealing hole 53 and the mounting groove 51 are sequentially increased, and the first sealing ring 70 is arranged in the sealing hole 53; the second seal seat 60 has a second through hole 61, an inner wall of the second through hole 61 has a first seal groove 611, a diameter of the second through hole 61 is smaller than a diameter of the seal hole 53, and the second seal ring 80 is disposed in the first seal groove 611. The first through hole 52, the sealing hole 53 and the mounting groove 51 are sequentially communicated, so that the driving rod 40 can conveniently pass through; the sealing hole 53 is arranged, so that the first sealing ring 70 can be conveniently placed; the second through hole 61 is arranged, and the diameter of the second through hole 61 is smaller than that of the sealing hole 53, so that the driving rod 40 can pass smoothly, the first sealing ring 70 can be limited, and the first sealing ring 70 is prevented from entering the second through hole 61; a first seal groove 611 is provided for placement of the second seal ring 80.

Further, the axial dimension of the seal hole 53 is larger than the axial dimension of the first seal ring 70, the diameters of the first through hole 52 and the second through hole 61 are equal, and the dimensions of the first seal ring 70 and the second seal ring 80 are the same. Through setting the axial dimension of the seal hole 53 to be greater than the axial dimension of the first seal ring 70, the first seal ring 70 can move in the seal hole 53, and because the pressure of one end of the first seal seat 50 towards the valve seat 20 is greater than that of the other end, a thrust deviating from one end of the valve seat 20 can be generated, so that the first seal ring 70 can be pushed to move towards the second seal seat 60, the tightness is ensured, the acting surface of the second seal seat 60 under the thrust can be reduced, the second seal seat 60 is prevented from being separated from the first seal seat 50 under the greater thrust, and the stability of the second seal seat 60 during operation is further improved.

Specifically, the opening periphery of the mounting groove 51 has an annular flange 511, and the second seal 60 is pressed into the mounting groove 51 from the opening of the mounting groove 51, and the annular flange 511 and the second seal 60 are riveted. By providing the annular flange 511 at the periphery of the opening of the mounting groove 51, the second sealing seat 60 is conveniently riveted, and the connection is more stable and reliable by adopting the riveting connection mode. Wherein the annular flange 511 is part of the first sealing seat 50.

Wherein, the annular flange 511 has a depth L1 of the mounting groove 51 before riveting; the outer wall of the second sealing seat 60 is cylindrical, the axial length of the second sealing seat 60 is L2, L1 is more than L2, and the annular flange 511 is riveted with the end face of the second sealing seat 60. The dimensions of the depth L1 of the mounting groove 51 and the axial length L2 of the second seal seat 60 are limited to the above ranges, and it is possible to ensure that the caulking of the annular flange 511 and the end face of the second seal seat 60 is smoothly completed.

As shown in fig. 5, according to the second embodiment of the present invention, the annular flange 511 is provided with a depth L1 of the installation groove 51 before caulking; unlike the above embodiment, the outer wall of the second seal 60 has a first circumferential surface 62, a stepped surface 63 and a second circumferential surface 64 which are sequentially provided, the diameter of the first circumferential surface 62 is larger than that of the second circumferential surface 64, the axial length of the first circumferential surface 62 is L2, L1 > L2, wherein the first circumferential surface 62 is fitted with the inner wall of the mounting groove 51, and the annular flange 511 and the stepped surface 63 are riveted. The first circumferential surface 62, the step surface 63 and the second circumferential surface 64 are provided, and the axial length L2 of the first circumferential surface 62 and the depth L1 of the mounting groove 51 are limited to the above ranges, so that the annular flange 511 can be smoothly riveted with the step surface 63, and the connection stability of the first seal seat 50 and the second seal seat 60 is ensured. Wherein the difference between L1 and L2 is about 0.5 mm.

As shown in fig. 6, according to the third embodiment of the present invention, in the first embodiment, the bottom wall of the mounting groove 51 has a second seal groove 512, the second seal groove 512 is provided around the first seal ring 70, the reversible solenoid valve further includes a third seal ring 91, the third seal ring 91 is provided in the second seal groove 512, and the third seal ring 91 abuts against an end face of the second seal seat 60. Through set up second seal groove 512 on the diapire of mounting groove 51 to with the terminal surface butt of third sealing washer 91 and second sealing seat 60, so set up, improved the sealed effect between first sealing seat 50 and the second sealing seat 60, and can reduce the thrust that second sealing seat 60 received because of the high pressure effect, thereby improved the stability of second sealing seat 60 during operation, simultaneously, prevent to influence the sealed effect between first sealing seat 50 and the second sealing seat 60 after first sealing washer 70 became invalid.

In the fourth embodiment not shown in the drawings, the inner wall of the mounting groove 51 and the outer wall of the second seal holder 60 are screw-coupled, and the mounting and dismounting are facilitated by screw-coupling.

Alternatively, in the fifth embodiment not shown in the drawings, the inner wall of the mounting groove 51 and the outer wall of the second seal holder 60 are laser welded. By adopting laser welding, the stability and reliability of the connection between the inner wall of the mounting groove 51 and the outer wall of the second seal holder 60 are improved.

Further, in the above embodiment, the weld groove 54 is provided on the outer wall of the first seal holder 50, and the outer wall of the first seal holder 50 and the inner wall of the valve body 10 are welded. By providing the weld groove 54 on the outer wall of the first seal seat 50, welding with the inner wall of the valve body 10 is facilitated.

Specifically, the reversible electromagnetic valve further includes a first end cap 92, a second end cap 93, a piston portion 94, a first capillary tube 95, and a second capillary tube 96, wherein the first end cap 92 and the second end cap 93 respectively block two ends of the valve body 10, the valve seat 20 is located between the first end cap 92 and the first sealing seat 50, the piston portion 94 is located between the first sealing seat 50 and the second end cap 93, and the piston portion 94 is connected with the driving rod 40; the area between the first end cap 92, the first seal seat 50 and the valve body 10 is a first cavity, the area between the first seal seat 50, the piston portion 94 and the valve body 10 is a second cavity, and the area between the piston portion 94, the second end cap 93 and the valve body 10 is a third cavity, wherein the first capillary 95 is communicated with the second cavity, and the second capillary 96 is communicated with the third cavity. The first end cover 92 and the second end cover 93 are arranged, so that the two ends of the valve body 10 can be plugged; a first capillary tube 95 is arranged to facilitate communication between the pilot valve and the second cavity; a second capillary tube 96 is provided to facilitate communication between the pilot valve and the third chamber. With the above connection mode, under the action of the pressure difference between the second cavity and the third cavity, the piston portion 94 can reciprocate in the valve body 10 to drive the driving rod 40 to move, so as to drive the valve core 30 to move, thereby closing or opening the valve port and realizing the on-off function of the reversible electromagnetic valve.

Optionally, the valve seat 20 has a slide, the valve core portion 30 is slidably disposed in the slide, and two valve ports are disposed opposite to each other, and both valve ports are in communication with the slide.

Optionally, the reversible solenoid valve further comprises two connecting pipes, wherein the two connecting pipes are welded with the valve seat 20, the two connecting pipes are coaxially arranged, and the two connecting pipes are respectively communicated with the two valve ports.

Optionally, the piston portion 94 includes a sealing plate, a first cone, a second cone, elastic members, a first plate and a second plate, where the first cone and the second cone are connected to the sealing plate at their small ends, and the outer wall of the first cone and the second cone at their large ends is in sealing fit with the inner wall of the valve body 10, and the two elastic members are in abutting connection with the inner walls of the cavities of the first cone and the second cone, and the first plate is connected to the inner wall of the cavity of the first cone, and the second plate is connected to the inner wall of the cavity of the second cone. The connecting mode adopts riveting, so that the connecting mode is more stable and reliable.

Optionally, the piston portion 94 has a third through hole through which the drive rod 40 passes.

The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A reversible solenoid valve, comprising:

a valve body (10), a valve seat (20), a valve core part (30) and a driving rod (40), wherein the valve seat (20) is arranged in the valve body (10), the valve seat (20) is provided with a valve port, the valve core part (30) is slidably arranged in the valve seat (20) so as to close or open the valve port, and the driving rod (40) is in driving connection with the valve core part (30);

a first sealing seat (50) and a second sealing seat (60), wherein the first sealing seat (50) is arranged in the valve body (10), the first sealing seat (50) is provided with a mounting groove (51), an opening of the mounting groove (51) is away from the valve seat (20), and the second sealing seat (60) is arranged in the mounting groove (51);

the device comprises a first sealing ring (70) and a second sealing ring (80), wherein the first sealing ring (70) is arranged in the first sealing seat (50), the second sealing ring (80) is arranged in the second sealing seat (60), and the driving rod (40) penetrates through the first sealing ring (70) and the second sealing ring (80).

2. The reversible solenoid valve according to claim 1, wherein,

the first sealing seat (50) is further provided with a first through hole (52) and a sealing hole (53), the first through hole (52), the sealing hole (53) and the mounting groove (51) are sequentially communicated, the diameters of the first through hole (52), the sealing hole (53) and the mounting groove (51) are sequentially increased, and the first sealing ring (70) is arranged in the sealing hole (53);

the second sealing seat (60) is provided with a second through hole (61), the inner wall of the second through hole (61) is provided with a first sealing groove (611), the diameter of the second through hole (61) is smaller than that of the sealing hole (53), and the second sealing ring (80) is arranged in the first sealing groove (611).

3. The reversible solenoid valve according to claim 2, characterized in that the axial dimension of the sealing hole (53) is greater than the axial dimension of the first sealing ring (70), the diameters of the first through hole (52) and the second through hole (61) are equal, and the dimensions of the first sealing ring (70) and the second sealing ring (80) are the same.

4. Reversible solenoid valve according to claim 1, characterized in that the inner wall of the mounting groove (51) and the outer wall of the second sealing seat (60) are screwed or the inner wall of the mounting groove (51) and the outer wall of the second sealing seat (60) are laser welded.

5. The reversible solenoid valve according to claim 1, characterized in that the opening periphery of the mounting groove (51) has an annular flange (511), the second sealing seat (60) being pressed into the mounting groove (51) from the opening of the mounting groove (51), the annular flange (511) and the second sealing seat (60) being riveted.

6. The reversible solenoid valve according to claim 5, characterized in that said annular flange (511) has a depth L1 of said mounting groove (51) before riveting; the outer wall of the second sealing seat (60) is cylindrical, the axial length of the second sealing seat (60) is L2, L1 is more than L2, and the annular flanging (511) is riveted with the end face of the second sealing seat (60).

7. The reversible solenoid valve according to claim 5, characterized in that said annular flange (511) has a depth L1 of said mounting groove (51) before riveting; the outer wall of the second sealing seat (60) is provided with a first circumferential surface (62), a step surface (63) and a second circumferential surface (64) which are sequentially arranged, the diameter of the first circumferential surface (62) is larger than that of the second circumferential surface (64), the axial length of the first circumferential surface (62) is L2, L1 is larger than L2, the first circumferential surface (62) is matched with the inner wall of the mounting groove (51), and the annular flanging (511) is riveted with the step surface (63).

8. The reversible solenoid valve according to claim 1, characterized in that the bottom wall of the mounting groove (51) is provided with a second sealing groove (512), the second sealing groove (512) is arranged around the first sealing ring (70), the reversible solenoid valve further comprises a third sealing ring (91), the third sealing ring (91) is arranged in the second sealing groove (512), and the end face of the third sealing ring (91) is abutted with the end face of the second sealing seat (60).

9. Reversible solenoid valve according to claim 1, characterized in that the outer wall of the first sealing seat (50) is provided with a weld groove (54), the outer wall of the first sealing seat (50) being welded to the inner wall of the valve body (10).

10. The reversible solenoid valve according to claim 1, further comprising a first end cap (92), a second end cap (93), a piston portion (94), a first capillary tube (95) and a second capillary tube (96), the first end cap (92) and the second end cap (93) respectively closing both ends of the valve body (10), the valve seat (20) being located between the first end cap (92) and the first sealing seat (50), the piston portion (94) being located between the first sealing seat (50) and the second end cap (93), the piston portion (94) being connected to the driving rod (40); the first end cover (92), the first sealing seat (50) and the area between the valve bodies (10) are first cavities, the first sealing seat (50), the piston portion (94) and the area between the valve bodies (10) are second cavities, the piston portion (94), the second end cover (93) and the area between the valve bodies (10) are third cavities, wherein the first capillary tube (95) is communicated with the second cavities, and the second capillary tube (96) is communicated with the third cavities.