CN2649882Y

CN2649882Y - Dual-arc-piece sluice valve

Info

Publication number: CN2649882Y
Application number: CN 200320106723
Authority: CN
Inventors: 刘树宇
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-10-31
Filing date: 2003-10-31
Publication date: 2004-10-20
Anticipated expiration: 2013-10-31

Abstract

A two-arc sheet gate valve belongs to the valve technology. The utility model comprises a valve body, a valve cap, a packing plate, a locking ring, a controlling shaft arranged on the valve cap and the valve cavity, a hand knob and an anchor gate. The anchor gate at least comprises a horizontal shaft tube, two valve plates and two springs. The horizontal shaft tube is fixed on two ends of the controlling shaft. Two valve plates with small shaft are plugged in two ends of the horizontal shaft tube. The springs are arranged between two valve plates and the controlling shaft, as well as covered on the horizontal shaft tube. Valve plates are arc shapes, which are embedded in the inlet and outlet of the valve body respectively. The valve cap is provided with a controlling shaft hole. A countersunk seat is arranged inside the shaft hole. A positioning sheet and a rubber bowl are arranged above the controlling shaft, which are arranged in the countersunk seat. A positioned aperture is a blind hole and arranged at the bottom of the valve body. The lower part of the controlling shaft is transfixed in the positioned aperture. The utility model is simple in structure, low in cost, durable in application, long in service life and reliable in airtight performance. The utility model can compensate automatically after worn off and prevent leakage effectively. The utility model can be used in various fluidic pipelines.

Description

Two arc sheet gate valves

Technical field

The utility model belongs to valve technology field, more particularly relates to the improvement of gate valve, that is the design of two arc sheet gate valves.

Background technique

Valve commonly used mainly contains two kinds---ball valve and gate valve.The common drawback of these two kinds of valves be structure and manufacturing process complexity, cost of production higher, fragile be not durable, operate convenient inadequately, ball valve especially.In addition, then be the common fault of conventional valves because of the relatively poor seepage of sealability.The ceramic valve resistance to high temperature that occurs is good recently, and has prolonged working life greatly.But, still exist because of can not effectively compensating the disadvantage of seepage after the wearing and tearing.

The purpose of this utility model, just be to overcome above-mentioned shortcoming and defect, provide that a kind of structure and manufacturing process are simple, cost of production is lower, not fragile, long service life, good seal performance, thus can effectively compensate the two arc sheet gate valves that effectively prevent seepage after the wearing and tearing automatically.

Summary of the invention

In order to achieve the above object, the utility model comprises having and imports and exports and the valve body of valve pocket, be installed in seal washer between valve body and valve gap of valve gap on the valve body, liner, the retaining ring that valve body and valve gap tightened together with screw thread, be installed in the Control Shaft in valve gap and the valve pocket, the handle that is fixed on the Control Shaft upper end and the gate that is fixed on the Control Shaft bottom.Gate comprises the transverse axis that is fixed on the Control Shaft two ends at least, have little axle with two valve blocks being inserted into two transverse axis pipe two ends respectively, be installed between two valve blocks and the Control Shaft and be sleeved on two springs on the transverse axis pipe.Two valve blocks are arc, are fastened on respectively in the import and export of valve body.Pull handle and make it rotation, just can drive Control Shaft, transverse axis pipe and two valve blocks, make it to open or close import and export, that is open or close this gate valve.The arc valve block is identical identical with the radian of cylindrical shape valve pocket, import and export can be opened or is closely closed.The switch of valve block is regulated automatically because of the fluid pressure differential of valve block both sides.After valve block was closed, the pressure big because of the pressure in the valve pocket, that outlet is outer was little, and the valve block in outlet port tightly is pressed in the outlet, makes closes well, avoids leaking.The seal degree of arc valve block and import and export does not rely on the pressure of spring, and therefore, the elasticity coefficient of spring is less to get final product.The effect of spring mainly is when preventing that the pressure of entrance point is too small, and the fluid that might take place flows backwards.

After the wearing and tearing, still can not influence the sealability of this gate valve between arc valve block and the cylindrical shape valve pocket.The fluid pressure differential of valve block both sides can tightly be pressed in valve block in the outlet all the time, plays compensating action automatically, and gate valve is closed well, avoids leaking.The working life of this gate valve is very long, can be worn and torn fully until valve block.

Have the control axis hole on the valve gap, have countersunk seat in the control axis hole.Control Shaft top is fixed with location piece and suit rubber ring, and location piece and rubber ring are arranged in countersunk seat.The effect of location piece is the positioning control axle, avoids moving up and down of Control Shaft.The effect of rubber ring is sealing, prevents to leak the slit of fluid between valve gap and Control Shaft.When being fixed on rubber ring on the Control Shaft and being inverted rubber bowl, under the pressure of internal flow, the rubber bowl tensioner is in the countersunk seat of valve gap, and sealing effect is better.

Valve pocket is cylindrical, and its bottom that is the bottom of valve body have the location use hole slot, positioning hole groove be blind hole, and the lower end of Control Shaft is inserted in the usefulness hole slot of location.This structure is the positioning control axle better, avoids the swing of its lower end.

Valve body and retaining ring can be with being threaded.This structure is fixed on valve gap and seal washer on the valve body with retaining ring.

The import and export of valve body can all have to connect uses screw thread, and this is a kind of structure of throughway valve.

Task of the present utility model comes to this and finishes.

A kind of structure is provided the utility model and manufacturing process is simple, cost of production is lower, not fragile, long service life, and good seal performance, thus can effectively compensate the two arc sheet gate valves that effectively prevent seepage after the wearing and tearing automatically.It can be widely used in the various fluid circuits.

Description of drawings

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

Fig. 2 is its explosive decomposition figure.

Embodiment

Embodiment 1.A kind of pair of arc sheet gate valve is as Fig. 1～shown in Figure 2.It comprises having imports and exports and the valve body 1 of valve pocket 2, is installed in seal washer 4 between valve body 1 and valve gap 3 of valve gap 3 on the valve body 1, liner, retaining ring 5 that valve body 1 and valve gap 3 are tightened together, is installed in Control Shaft 6 in valve gap 3 and the valve pocket 2, is fixed on the handle 7 of Control Shaft 6 upper ends and the gate that is fixed on Control Shaft 6 bottoms.Gate comprises the transverse axis 8 that is fixed on Control Shaft 6 two ends at least, have little axle 14 with two valve blocks 9 being inserted into two transverse axis pipe 8 two ends respectively, be installed between two valve blocks 9 and the Control Shaft 6 and be sleeved on two springs 10 on the transverse axis pipe 8.Two valve blocks 9 are arc, are fastened on respectively in the import and export of valve body 1.Have control axis hole 11 on the valve gap 3, have countersunk seat in the control axis hole 11.Location piece 15 and rubber bowl 12 are fixed respectively, are sleeved on the Control Shaft 6, and are arranged in countersunk seat.Valve pocket 2 is cylindrical, and arc valve block 9 is identical with the radian of cylindrical shape valve pocket 2.

The bottom of valve body 1 has location hole slot 13, and positioning hole groove 13 is a blind hole.The lower end of Control Shaft 6 is inserted into the location with in the hole slot 13.

The import and export of valve body 1 all have to connect uses screw thread.This is a kind of throughway valve.

Embodiment is 1 simple in structure, cost is low, not fragile, long service life, and good seal performance can effectively compensate after the wearing and tearing automatically, can effectively prevent seepage.It can be widely used in the various fluid circuits.

Claims

1. two arc sheet gate valve, it comprises the valve body that has import and export and valve pocket, be installed in the valve gap on the valve body, the seal washer of liner between valve body and valve gap, the retaining ring that valve body and valve gap is tightened together with screw thread, be installed in the Control Shaft in valve gap and the valve pocket, be fixed on the handle of Control Shaft upper end and the gate that is fixed on the Control Shaft bottom, it is characterized in that said gate comprises the transverse axis pipe that is fixed on the Control Shaft two ends at least, have little axle to be inserted into two valve blocks at transverse axis pipe two ends, be installed between two valve blocks and the Control Shaft and be sleeved on two springs on the transverse axis pipe, two valve blocks are arc, be fastened on respectively in the import and export of valve body, have the control axis hole on the valve gap, have countersunk seat in the control axis hole, Control Shaft top is fixed with location piece, be set with rubber ring, location piece and rubber ring are arranged in countersunk seat, valve pocket is cylindrical, and the arc valve block is identical with the radian of cylindrical shape valve pocket.

2. according to described pair of arc sheet of claim 1 gate valve, it is characterized in that the said rubber ring that is fixed on the Control Shaft is inverted rubber bowl.

3. according to claim 1 or 2 described pairs of arc sheet gate valves, the bottom that it is characterized in that said valve body has the location, and use hole slot, positioning hole groove be blind hole, and the lower end of Control Shaft is inserted in the usefulness hole slot of location.

4. according to claim 1 or 2 described pairs of arc sheet gate valves, it is characterized in that the import and export of said valve body all have the connection screw thread.