CN205298132U

CN205298132U - Safe valves

Info

Publication number: CN205298132U
Application number: CN201620043546.XU
Authority: CN
Inventors: 张生学
Original assignee: Dalian Yuandong Yongchang Automation Engineering Co Ltd
Current assignee: Dalian Yuandong Yongchang Automation Engineering Co Ltd
Priority date: 2016-01-18
Filing date: 2016-01-18
Publication date: 2016-06-08
Anticipated expiration: 2026-01-18

Abstract

The utility model provides a safe valves, includes that valve body, throttle stop valve, cartridge formula directly move overflow valve, tubular check valve. The throttle stop valve is connected with the valve body, and 4# and 5# hole on the valve body respectively should with the P hole and the T pore pair of throttle stop valve. The 6# threaded connection of overflow valve and valve body is directly moved to the cartridge formula, the second is taken over and valve body 7# hole threaded connection. The plug screw is the production technology hole with the 8# hole threaded connection, 8# hole of valve body for the intercommunication of 1# hole and overflow valve. The tubular check valve connects and first takeover threaded connection valve body 2# hole, tubular check valve lower extreme threaded connection in proper order through the silk, hydraulic oil in joint and the first takeover connection oil tank. The system pressure can be surveyd through pressure measuring connector to the 3# internal thread jogged joint of pressure measuring connector and valve body. The utility model discloses the collection by, overflow and one -way three function on a valves, compact structure, system's pipeline are less and simple.

Description

A kind of relief valve group

Technical field

This utility model relates to valve technology field, particularly relates to a kind of relief valve group.

Background technology

Relief valve group is the core assembled part that coal pulverizer loads hydraulic system, is realize loading hydraulic system counteracting force safeguard protection, the pile-up valve group of the functions such as system reverse repairing and off-load maintenance. It is widely used coal pulverizer hydraulic system in the market that medium-speed pulverizer loads hydraulic system, and the hydraulic principle that each manufacturer adopts is basically identical, but has nothing in common with each other in the design of valve block. Most producers are by three functions of relief valve group, are divided into two valve groups and realize, and integrated level is low, causes system pipeline many and complicated. This utility model three functions of relief valve group collection are in a valve group, and compact conformation, system pipeline is few and simple.

Utility model content

The technical problems to be solved in the utility model is to provide three functions of a kind of collection in a valve group, compact conformation, and system pipeline is few and simple relief valve group.

The technical scheme is that

A kind of relief valve group, including valve body, throttling stop valve, plug-in direct acting overflow valve, tubular type check valve, pressure measuring tie-in, plug screw, silk to, joint, the first adapter, the second adapter. Described valve body is the carrier of relief valve group, and throttling stop valve is connected with valve body by screw, and 4# and the 5# hole on valve body is corresponding with the P hole of throttling stop valve and T hole respectively, by the break-make between throttling stop valve application valve body 4# and 5# hole. Described plug-in direct acting overflow valve is connected with the 6# thread cartridge hole of valve body by the external screw thread of self; Described second adapter is threadeded with valve body 7# hole, plug-in direct acting overflow valve sets safe pressure value, when from the valve body 1# pressure the entered setting value more than plug-in direct acting overflow valve, plug-in direct acting overflow valve is opened greatly, pressure oil passes sequentially through plug-in direct acting overflow valve, valve body 7# hole, the second adapter returns to fuel tank. Described plug screw is threadeded with the 8# hole of valve body, and 8# hole is production technology hole, and for the connection in 1# hole Yu overflow valve, the effect of plug screw is closure 8# fabrication hole.Threaded valve body 2# hole, tubular type check valve lower end thread connecting joint successively and the first adapter, joint and the first adapter are connected hydraulic oil in fuel tank by silk by tubular type check valve, it is possible to be drawn onto in valve body by hydraulic oil in fuel tank by vacuum action. Described pressure measuring tie-in is connected with the 3# internal thread hole of valve body by the external screw thread of itself, can measure system pressure by pressure measuring tie-in.

Above-mentioned valve body surface is turned blue or Nickel Plating Treatment, rust resistance and corrosion resistance.

The hermetic unit of above-mentioned relief valve group completes to seal by O and combination mat.

The cut-off of this utility model collection, overflow and unidirectional three functions are in a valve group, and compact conformation, system pipeline is few and simple.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is the side view of 1.

Fig. 3 is operation principle schematic diagram of the present utility model.

Fig. 4 is this utility model valve body structure schematic diagram.

Fig. 5 is the side view of Fig. 4.

Fig. 6 is the A direction view of Fig. 4.

Fig. 7 is the B-B sectional view of Fig. 4.

Detailed description of the invention

A kind of relief valve group, including valve body 1, throttling stop valve 2, plug-in direct acting overflow valve 4, tubular type check valve 7, pressure measuring tie-in 3, plug screw 5, silk to 6, joint the 8, first adapter the I, second adapter. The described carrier (see Fig. 4, Fig. 5, Fig. 6, Fig. 7) that valve body 1 is relief valve group, other parts are directly or indirectly connected, and valve body surface is turned blue or Nickel Plating Treatment, rust resistance and corrosion resistance. Throttling stop valve 2 is connected with valve body 1 by screw, and 4# and the 5# hole on valve body 1 is corresponding with the P hole of throttling stop valve 2 and T hole respectively, by the break-make between throttling stop valve application valve body 4# and 5# hole. Described plug-in direct acting overflow valve 4 is connected with the 6# thread cartridge hole of valve body 1 by the external screw thread of self; Described second adapter 10 is threadeded with valve body 7# hole, plug-in direct acting overflow valve 4 sets safe pressure value, when the pressure entered from valve body 1# hole is more than the setting value of plug-in direct acting overflow valve, plug-in direct acting overflow valve is opened greatly, pressure oil passes sequentially through plug-in direct acting overflow valve, valve body 7# hole, the second adapter returns to fuel tank. Described plug screw 5 is threadeded with the 8# hole of valve body 1, and 8# hole is production technology hole, and for the connection in 1# hole Yu overflow valve, the effect of plug screw is closure 8# fabrication hole. Tubular type check valve 7 is by the silk 2# hole to 6 threaded valve bodies 1, and tubular type check valve 7 lower end is thread connecting joint 8 and the first adapter 9 successively, and joint and the first adapter connect hydraulic oil in fuel tank, it is possible to be drawn onto in valve body by hydraulic oil in fuel tank by vacuum action. Described pressure measuring tie-in 3 is connected with the 3# internal thread hole of valve body 1 by the external screw thread of itself, can measure system pressure by pressure measuring tie-in. The hermetic unit constituting relief valve group completes to seal by O and combination mat.

Operation principle, shown in Fig. 3:

1, when the counteracting force pressure entering valve group from P1 mouth is higher than the setting pressure of valve group overflow valve, overflow valve is opened, and returns to fuel tank by T1 mouth, to ensure that system pressure is in safety range.

2, when the system is operating, counteracting force occurs drawing empty on-the-spot, and when namely negative pressure occurs in system, valve group check valve is opened, by T2 mouth from fuel tank to system repairing, to ensure that system is properly functioning.

3, when system needs maintenance down, retaining back pressure for anti-locking system and cause fluid splash, opened by throttling stop valve, make system back pressure be discharged by throttling stop valve, system fluid returns to fuel tank.

4, this valve group can pass through pressure measuring tie-in, measures system pressure at any time.

Claims

1. a relief valve group, including valve body (1), throttling stop valve (2), plug-in direct acting overflow valve (4), tubular type check valve (7), pressure measuring tie-in (3), plug screw (5), silk is to (6), joint (8), first adapter (9), second adapter (10), it is characterized in that the carrier that described valve body (1) is relief valve group, throttling stop valve (2) is connected with valve body (1) by screw, 4# and 5# hole on valve body (1) is corresponding with the P hole of throttling stop valve (2) and T hole respectively, by the break-make between throttling stop valve application valve body 4# and 5# hole, described plug-in direct acting overflow valve (4) is connected with the 6# thread cartridge hole of valve body (1) by the external screw thread of self, described second adapter (10) is threadeded with the 7# hole of valve body (1), plug-in direct acting overflow valve sets safe pressure value, when the pressure entered from valve body 1# hole is more than the setting value of plug-in direct acting overflow valve, plug-in direct acting overflow valve is opened greatly, pressure oil passes sequentially through plug-in direct acting overflow valve, valve body 7# hole, the second adapter returns to fuel tank, described plug screw (5) is threadeded with the 8# hole of valve body (1), tubular type check valve (7) is by the silk 2# hole to (6) threaded valve body (1), tubular type check valve (7) lower end thread connecting joint successively (8) and the first adapter (9), joint and the first adapter connect hydraulic oil in fuel tank, described pressure measuring tie-in (3) is connected with the 3# internal thread hole of valve body (1) by the external screw thread of itself, can measure system pressure by pressure measuring tie-in.

2. a kind of relief valve group according to claim 1, it is characterised in that the hermetic unit of described relief valve group completes to seal by O and combination mat.