CN203585341U

CN203585341U - Novel valve structure

Info

Publication number: CN203585341U
Application number: CN201320590975.5U
Authority: CN
Inventors: 彭华; 劳乔新
Original assignee: DONGGUAN HEJIN PLASTIC MACHINERY Co Ltd
Current assignee: DONGGUAN HEJIN PLASTIC MACHINERY Co Ltd
Priority date: 2013-09-24
Filing date: 2013-09-24
Publication date: 2014-05-07
Anticipated expiration: 2023-09-24

Abstract

The utility model discloses a novel valve structure. The novel valve structure comprises a valve body. A cylinder is mounted on the side wall of the valve body; a metal piston and a piston front guide plate arranged in front of the metal piston are fixed to a piston rod of the cylinder; the side wall of the valve body, which is opposite to the side wall mounted with the cylinder, is provided with a metal tube for the piston front guide plate to penetrate and a rubber valve seat for sealing and blocking a metal pipe by matching with the metal piston; a feed outlet end of the metal tube extends into the valve body as long as passing the rubber valve seat. According to the novel valve structure, the abrasion resistant metal piston is used, and the piston front guide plate can block raw materials in the metal tube in advance before the metal piston is used for sealing, so that the service life is prolonged, and the problem of feed blocking can be eliminated completely; meanwhile, the feed outlet end of the metal tube extends as long as passing the rubber valve seat, so that the friction with the rubber valve seat of plastic materials in discharging can be avoided, the abrasion of the rubber valve seat can be prevented, the sealing performance can be improved greatly, and the failure rate can be reduced.

Description

A kind of Novel valve body structure

Technical field

The utility model relates to a kind of Novel valve body structure.

Background technique

Valve body structure is mainly comprised of one group of pneumatic actuator and seal valve seat, be a kind of pressurized air that utilizes as power source, by the reciprocating action driven plunger of electromagnetic valve cylinder, thereby block or open the device of pipeline.Valve body structure is due to simple in structure, easy to operate, and energy flexible adaptation is in the pipe-line system of various calibers, such as being widely used in mass transport and the vacuum pipe of plastic injection-moulded industry.

Existing valve body structure comprises two kinds, be to utilize the direct shutoff supply pipe of rubber piston, but when shutoff, rubber piston is under the continuous shock and friction of plastic material, be very easy to wearing and tearing, thereby affect sealability, and plastic material is more easily stuck between rubber piston and valve body lumen wall, thereby can not seals, cause valve body structure disabler, thereby this valve body structure is short working life, poor sealing performance, rate of fault is high, another kind is, on the discharge end of supply pipe, rubber valve seat is installed, utilize rubber valve seat to coordinate to come blocking pipe with metallic piston, this kind of structure is not prone to the problem getting stuck, but the rubber valve seat of this valve body structure directly contacts with the rubber raw materials flowing out from supply pipe, under the flowage friction of plastic material, rubber valve seat inwall downside is inevitably worn, thereby affect sealability, and this valve body structure is to be sealed by the inclined-plane of metallic piston and the interior side contacts of rubber valve seat, when metallic piston compresses, rubber valve seat is stressed from inner side, easily ftracture, often need to change rubber valve seat, therefore this valve body structure exists working life short equally, poor sealing performance, the problem that rate of fault is high.

Summary of the invention

For the deficiencies in the prior art, the purpose of this utility model is intended to provide a kind of long service life, sealability is splendid, rate of fault is extremely low can thoroughly stop the Novel valve body structure that gets stuck.

For achieving the above object, the utility model adopts following technological scheme:

A kind of Novel valve body structure, comprise valve body main body, on the sidewall of described valve body main body, cylinder is installed, on the piston rod of this cylinder, be fixed with metallic piston and the piston front guide that is positioned at metallic piston front side, described valve body main body is provided with the metal tube and the rubber valve seat with shutoff metal tube for complexed metal piston that can stretch into for piston front guide on another sidewall relative with cylinder place sidewall, and the discharge end of metal tube stretches into valve body main body and exceeds rubber valve seat.

As a kind of preferred version, described cylinder is aluminum alloy double action type cylinder.

As a kind of preferred version, described metallic piston is stainless steel piston.

As a kind of preferred version, described metal tube is Stainless Steel Tube.

As a kind of preferred version, the discharge end of described metal tube exceeds rubber valve seat 0.3-0.8mm.

As a kind of preferred version, the discharge end of described metal tube exceeds rubber valve seat 0.5mm.

As a kind of preferred version, the top of described valve body main body is fixed with lid by screw.

As a kind of preferred version, between described lid and valve body main body, be provided with silica gel sealing ring.

A kind of Novel valve body structure that the utility model is set forth, its beneficial effect is: compared with prior art, valve body structure of the present utility model adopts nonabradable metallic piston, and utilize piston front guide raw material in barrier metal pipe in advance before metallic piston sealing, thereby extended working life, stopped the generation of the problem that gets stuck completely, and because the discharge end of metal tube exceeds rubber valve seat, in the time of avoiding plastic material discharging and rubber valve seat friction, thereby prevent that rubber valve seat is worn, thereby greatly improved sealability, reduced rate of fault; In addition, it is removable that the lid at this valve body structure top only need unload screw, thereby favorable expandability, in the short time, a plurality of valve body structures can be fitted together in upper and lower overlapping mode.

Accompanying drawing explanation

Fig. 1 is the utility model embodiment's configuration diagram.

Description of reference numerals:

10, valve body main body; 20, cylinder; 21, metallic piston; 22, piston front guide; 30, metal tube; 40, rubber valve seat; 50, lid; 60, silica gel sealing ring.

Embodiment

Below in conjunction with accompanying drawing and specific embodiment, the utility model is further described.

Please refer to shown in Fig. 1, it has demonstrated the concrete structure of the utility model preferred embodiment, a kind of Novel valve body structure, comprise valve body main body 10, cylinder 20 is installed on the sidewall of described valve body main body 10, on the piston rod of this cylinder 20, be fixed with metallic piston 21 and the piston front guide 22 that is positioned at metallic piston 21 front sides, described valve body main body 10 is provided with the metal tube 30 and the rubber valve seat 40 with shutoff metal tube 30 for complexed metal piston 21 that can stretch into for piston front guide 22 on another sidewall relative with cylinder 20 place sidewalls, the discharge end 3 of metal tube 30 stretches into valve body main body 10 and exceeds rubber valve seat 40.

Because aluminum alloy double action type cylinder has excellent stable performance, cylinder 20 in the present embodiment adopts aluminum alloy double action type cylinder, because stainless steel has good physical stability and chemical stability, metallic piston 21 in the present embodiment adopts stainless steel piston, metal tube 30 adopts Stainless Steel Tube, and the discharge end of metal tube 30 exceeds rubber valve seat 0.5mm, to prevent the raw material rubber valve seat 40 that rubs when metal tube 30 flows out, certainly, this distance value is a preferably value, through test of many times, draw, when the discharge end of metal tube 30 exceeds rubber valve seat 0.3-0.8mm, all very good to preventing the effect of raw material friction rubber valve seat 40.

For improving the expansivity of this valve body structure, the top of described valve body main body 10 is fixed with lid 50 by screw, between lid 50 and valve body main body 10, is provided with silica gel sealing ring 60.

Valve body structure of the present utility model adopts nonabradable metallic piston 21, and utilize piston front guide 22 raw material in barrier metal pipe 30 in advance before metallic piston 21 sealing, thereby extended working life, stopped the generation of the problem that gets stuck completely, and because the discharge end of metal tube 30 exceeds rubber valve seat 40, in the time of avoiding plastic material discharging and rubber valve seat 40 friction, thereby prevent that rubber valve seat 40 is worn, thereby greatly improved sealability, reduced rate of fault; In addition, it is removable that 50 need of the lid at this valve body structure top unload screw, thereby favorable expandability, in the short time, a plurality of valve body structures can be fitted together in upper and lower overlapping mode.

The above, it is only the utility model preferred embodiment, not technical scope of the present utility model is imposed any restrictions, therefore any trickle modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all still belong in the scope of technical solutions of the utility model.

Claims

1. a Novel valve body structure, it is characterized in that: comprise valve body main body, on the sidewall of described valve body main body, cylinder is installed, on the piston rod of this cylinder, be fixed with metallic piston and the piston front guide that is positioned at metallic piston front side, described valve body main body is provided with the metal tube and the rubber valve seat with shutoff metal tube for complexed metal piston that can stretch into for piston front guide on another sidewall relative with cylinder place sidewall, and the discharge end of metal tube stretches into valve body main body and exceeds rubber valve seat.

2. a kind of Novel valve body structure according to claim 1, is characterized in that: described cylinder is aluminum alloy double action type cylinder.

3. a kind of Novel valve body structure according to claim 1, is characterized in that: described metallic piston is stainless steel piston.

4. a kind of Novel valve body structure according to claim 1, is characterized in that: described metal tube is Stainless Steel Tube.

5. a kind of Novel valve body structure according to claim 1, is characterized in that: the discharge end of described metal tube exceeds rubber valve seat 0.3-0.8mm.

6. a kind of Novel valve body structure according to claim 5, is characterized in that: the discharge end of described metal tube exceeds rubber valve seat 0.5mm.

7. a kind of Novel valve body structure according to claim 1, is characterized in that: the top of described valve body main body is fixed with lid by screw.

8. a kind of Novel valve body structure according to claim 7, is characterized in that: between described lid and valve body main body, be provided with silica gel sealing ring.