CN214743682U

CN214743682U - Knife switch type high-temperature high-pressure zero-leakage electromagnetic valve

Info

Publication number: CN214743682U
Application number: CN202121266044.0U
Authority: CN
Inventors: 李冬
Original assignee: Hebei Permanent Magnet Electronic Technology Co ltd
Current assignee: Hebei Permanent Magnet Electronic Technology Co ltd
Priority date: 2021-06-07
Filing date: 2021-06-07
Publication date: 2021-11-16
Anticipated expiration: 2031-06-07

Abstract

The utility model discloses a zero leakage solenoid valve of knife-switch formula high temperature high pressure, including connecting pipe and valve body, the up end at the connecting pipe is installed to the valve body, the center of valve body is provided with the valve groove, the bottom of connecting pipe is provided with the disk seat, the outer end parcel of valve groove has solenoid, solenoid's outer end is provided with the heat insulating mattress, sliding connection has the case in the valve groove, the up end of case is provided with the spring, the case passes through spring elastic connection with the valve body, the outer terminal surface of case is provided with sealed lid, the top of connecting pipe and the bottom of valve body are provided with the connecting plate, the outer terminal surface of connecting plate is provided with the clamp, connecting pipe and valve body pass through connecting plate and clamp cooperation fixed connection. The utility model discloses a set up the heat insulating mattress in solenoid's outer end, avoid solenoid to receive the high temperature liquid influence in the connecting tube to burn out, thereby through connecting plate and clamp cooperation, make valve body and connecting pipe install fast and dismantle the convenience and overhaul the solenoid valve and change with the part.

Description

Knife switch type high-temperature high-pressure zero-leakage electromagnetic valve

Technical Field

The utility model belongs to the technical field of the solenoid valve, specifically be a zero leakage solenoid valve of switch formula high temperature high pressure.

Background

In the development of the present stage, high-pressure solenoid valves are used in various industries, and in the preferred products of automation control engineering, project modification and equipment matching, the high-pressure solenoid valves have wide range of general media, can be respectively used for fluids such as water, light oil, heavy oil, non-corrosive gas and steam, and the like, such as a drainage system of an air exhaust pipeline of a power station and an exhaust system of an evaporator, and mainly perform double-position automatic adjustment on media in the pipeline.

An authorized notice number CN210003905U discloses a high-temperature and high-pressure resistant electromagnetic valve, which comprises a valve body, the left side of the inner cavity of the valve body is provided with a medium inlet, the right side of the inner cavity of the valve body is provided with a medium outlet, the medium inlet is communicated with the medium outlet through a communication hole, the top of the valve body is fixedly connected with a sealing chamber, the top of the sealing chamber is provided with a coil, the inner cavity of the coil is provided with a movable iron core, the top of the coil is fixedly provided with a sealing cover, the top of the movable iron core is fixedly connected with a fixed plate which is arranged in the sealing cover, the top of the fixed plate is fixedly connected with the top of the inner cavity of the sealing cover through a first return spring, the sealing chamber inner chamber has been seted up flexible groove, the flexible groove outside is provided with the heat dissipation guide pin bushing, be provided with the push rod in the flexible inslot, the push rod top with move iron core fixed connection, push rod bottom fixedly connected with valve plug.

Above-mentioned a high temperature and high pressure resistant solenoid valve that discloses, this solenoid valve passes through the fin and derives the heat, but high temperature liquid source constantly flows in the solenoid valve, and the fin radiating effect is relatively poor, and solenoid breaks down because of high temperature easily, and the solenoid valve need transport high temperature high pressure fluid, therefore the sealing washer in the solenoid valve is ageing easily to need often overhaul the change to the inside sealing washer of solenoid valve, current solenoid valve dismantles the difficulty, overhauls the change process loaded down with trivial details.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a zero leakage solenoid valve of switch formula high temperature high pressure to solve among the prior art the solenoid valve thermal-insulated relatively poor, the comparatively loaded down with trivial details problem of solenoid valve maintenance in-process dismouting.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a zero leakage solenoid valve of switch formula high temperature high pressure, includes connecting pipe and valve body, the up end at the connecting pipe is installed to the valve body, the center of valve body is provided with the valve groove, the bottom of connecting pipe is provided with the disk seat, the outer end parcel of valve groove has solenoid, solenoid's outer end is provided with the heat insulating mattress, sliding connection has the case in the valve groove, the up end of case is provided with the spring, the case passes through spring elastic connection with the valve body, the outer terminal surface of case is provided with sealed lid, the top of connecting pipe and the bottom of valve body are provided with the connecting plate, the outer terminal surface of connecting plate is provided with the clamp, connecting pipe and valve body pass through connecting plate and clamp cooperation fixed connection.

Preferably, the heat insulating pad is made of glass fiber, wraps the electromagnetic coil and avoids the coil from being burnt out due to high temperature.

Preferably, the overlooking diameter of the valve core is smaller than the overlooking inner diameter of the valve groove, the overlooking diameter of the sealing cover is equal to the overlooking inner diameter of the valve groove, the valve groove is isolated from the connecting pipe through the sealing cover, high-temperature liquid is prevented from entering the valve groove, an air heat insulation layer is formed between the valve core and the electromagnetic coil, and the high temperature of the valve core is prevented from being transmitted to a battery coil.

Preferably, the outer end face of the sealing cover is provided with a first sealing ring, the bottom of the valve core is provided with a second sealing ring, a third sealing ring is arranged between the valve body and the connecting pipe, and the sealing performance of the electromagnetic valve is enhanced by adding the sealing rings at all connecting positions.

Preferably, first sealing washer, second sealing washer and third sealing washer adopt high temperature resistant silica gel to make, and the high temperature silica gel that alarms can delay the sealing washer ageing, extension sealing washer life.

Preferably, the up end of connecting plate is the inclined plane structure, the thickness of connecting plate reduces to the edge by the center gradually, through clamp chucking connecting plate, along with the clamp contracts gradually, and connecting pipe and valve body extrude each other sealedly.

Preferably, the clamp is two groups of rotationally connected elliptical stainless steel rings, a butterfly bolt is arranged on the clamp, a notch with a trapezoidal section is formed in the inner end face of the clamp, the clamp is locked through the butterfly bolt, and the inner end face of the clamp is clamped on the outer end face of the connecting plate to lock the connecting plate.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a set up the heat insulating mattress in solenoid's outer end, avoid solenoid to receive the high temperature liquid influence in the connecting tube to burn out, thereby through connecting plate and clamp cooperation, make valve body and connecting pipe install fast and dismantle the convenience and overhaul the solenoid valve and change with the part.

Drawings

FIG. 1 is a front sectional view of the overall structure of the present invention;

fig. 2 is a top view of the clamp of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 1 according to the present invention.

In the figure: 1 connecting pipe, 11 valve seats, 12 third sealing rings, 13 connecting plates, 2 valve bodies, 21 valve grooves, 22 electromagnetic coils, 23 heat insulation pads, 24 valve cores, 241 sealing covers, 242 first sealing rings, 243 second sealing rings, 25 springs, 3 clamps and 31 butterfly bolts.

Detailed Description

Referring to fig. 1, a knife-switch type high-temperature high-pressure zero-leakage electromagnetic valve comprises a connecting pipe 1 and a valve body 2, wherein the valve body 2 is installed on the upper end face of the connecting pipe 1, a valve groove 21 is formed in the center of the valve body 2, a valve seat 11 is welded at the bottom of the connecting pipe 1, an electromagnetic coil 22 wraps the outer end of the valve groove 21, a heat insulation pad 23 is glued to the outer end of the electromagnetic coil 22, a valve core 24 is connected in the valve groove 21 in a sliding mode, a spring 25 is welded to the upper end face of the valve core 24, the valve core 24 is elastically connected with the valve body 2 through the spring 25, a sealing cover 241 is welded to the outer end face of the valve core 24, a connecting plate 13 is welded to the top of the connecting pipe 1 and the bottom of the valve body 2, a hoop 3 is sleeved on the outer end face of the connecting plate 13, and the connecting pipe 1 and the valve body 2 are fixedly connected with the hoop 3 through the connecting plate 13 in a matching mode.

Referring to fig. 1, the heat insulation pad 23 is made of glass fiber, the heat insulation pad 23 wraps the electromagnetic coil 22 to prevent the coil from being burned out due to high temperature, the overlooking diameter of the valve core 24 is smaller than the overlooking inner diameter of the valve groove 21, the overlooking diameter of the sealing cover 241 is equal to the overlooking inner diameter of the valve groove 21, the sealing cover 241 isolates the valve groove 21 from the connecting pipe 1 to prevent high-temperature liquid from entering the valve groove 21, and meanwhile, an air heat insulation layer is formed between the valve core 24 and the electromagnetic coil 22 to prevent the high temperature of the valve core 24 from being transmitted to the battery coil.

Referring to fig. 1, a first sealing ring 242 is disposed on an outer end surface of a sealing cover 241, a second sealing ring 243 is disposed at a bottom of a valve core 24, a third sealing ring 12 is disposed between a valve body 2 and a connecting pipe 1, sealing performance of the solenoid valve is enhanced by adding a sealing ring at each joint, the first sealing ring 242, the second sealing ring 243 and the third sealing ring 12 are made of high temperature resistant silica gel, aging of the sealing rings can be delayed by the high temperature resistant silica gel, and service life of the sealing rings is prolonged.

Referring to fig. 2 and 3, the upper end surface of the connecting plate 13 is an inclined plane structure, the thickness of the connecting plate 13 gradually decreases from the center to the edge, the connecting plate 13 is clamped by the hoop 3, the connecting pipe 1 and the valve body 2 are mutually extruded and sealed along with the gradual shrinkage of the hoop 3, the hoop 3 is two groups of rotationally connected oval stainless steel rings, the hoop 3 is connected with a butterfly bolt 31 through a thread, a notch with a trapezoidal section is formed in the inner end surface of the hoop 3, the hoop 3 is locked through the butterfly bolt 31, and the inner end surface of the hoop 3 is clamped on the outer end surface of the connecting plate 13 to lock the hoop.

The working principle of the scheme is as follows: the utility model discloses when overhauing, at first close the main valve of pipeline, anticlockwise rotation butterfly bolt 31, then take off clamp 3, make disk seat 11 and the separation of connecting pipe 1, take case 24 out, whether ageing damage is gone out to first sealing washer 242, second sealing washer 243 and third sealing washer 12 and relevant accessory of inspection.

The utility model discloses a set up heat insulating mattress 23 in solenoid 22's outer end, avoid solenoid 22 to receive the high temperature liquid influence in connecting pipe 1 to burn out, thereby through connecting plate 13 and the cooperation of clamp 3, make valve body 2 and connecting pipe 1 install fast and dismantle the convenience and overhaul the solenoid valve and the part is changed.

Claims

1. The utility model provides a zero leakage solenoid valve of switch formula high temperature high pressure, includes connecting pipe (1) and valve body (2), its characterized in that: the valve body (2) is arranged on the upper end surface of the connecting pipe (1), a valve groove (21) is arranged in the center of the valve body (2), the bottom of the connecting pipe (1) is provided with a valve seat (11), the outer end of the valve groove (21) is wrapped with an electromagnetic coil (22), the outer end of the electromagnetic coil (22) is provided with a heat insulation pad (23), the valve groove (21) is connected with a valve core (24) in a sliding way, a spring (25) is arranged on the upper end surface of the valve core (24), the valve core (24) is elastically connected with the valve body (2) through the spring (25), a sealing cover (241) is arranged on the outer end face of the valve core (24), a connecting plate (13) is arranged on the top of the connecting pipe (1) and the bottom of the valve body (2), the outer end face of connecting plate (13) is provided with clamp (3), connecting pipe (1) and valve body (2) pass through connecting plate (13) and clamp (3) cooperation fixed connection.

2. The knife-switch type high-temperature high-pressure zero-leakage electromagnetic valve according to claim 1, characterized in that: the heat insulation pad (23) is made of glass fiber.

3. The knife-switch type high-temperature high-pressure zero-leakage electromagnetic valve according to claim 1, characterized in that: the diameter of the valve element (24) in plan view is smaller than the inner diameter of the valve groove (21) in plan view, and the diameter of the seal cover (241) in plan view is equal to the inner diameter of the valve groove (21) in plan view.

4. The knife-switch type high-temperature high-pressure zero-leakage electromagnetic valve according to claim 1, characterized in that: the outer end face of the sealing cover (241) is provided with a first sealing ring (242), the bottom of the valve core (24) is provided with a second sealing ring (243), and a third sealing ring (12) is arranged between the valve body (2) and the connecting pipe (1).

5. The knife-switch type high-temperature high-pressure zero-leakage electromagnetic valve according to claim 4, characterized in that: the first sealing ring (242), the second sealing ring (243) and the third sealing ring (12) are made of high-temperature-resistant silica gel.

6. The knife-switch type high-temperature high-pressure zero-leakage electromagnetic valve according to claim 1, characterized in that: the upper end face of the connecting plate (13) is of an inclined plane structure, and the thickness of the connecting plate (13) is gradually reduced from the center to the edge.

7. The knife-switch type high-temperature high-pressure zero-leakage electromagnetic valve according to claim 1, characterized in that: the clamp (3) is two sets of oval stainless steel rings which are connected in a rotating mode, butterfly bolts (31) are arranged on the clamp (3), and notches with trapezoidal sections are formed in the inner end faces of the clamp (3).