CN2584901Y

CN2584901Y - Adjustable change valve

Info

Publication number: CN2584901Y
Application number: CN 02277696
Authority: CN
Inventors: 李志鹏; 王贵生
Original assignee: Hunan Pump Valve Manufactory Co ltd
Current assignee: Hunan Pump Valve Manufactory Co ltd
Priority date: 2002-11-18
Filing date: 2002-11-18
Publication date: 2003-11-05
Anticipated expiration: 2012-11-18

Abstract

The utility model relates to a reversing valve which controls the flowing direction of fluid. The utility model is composed of a front cover plate, a front reversing valve core, a back reversing valve core, a valve rod, a valve body, a valve body inner sleeve, a tail seat, a membrane, a membrane upper pressing plate, a membrane lower pressing plate, a membrane seat, a thrust plate, a spring, a bolt, a nut, a rubber sealing ring, etc. The utility model uses the membrane as a driving element, and uses the spring as an adjustable pressure element. A moveable element and a fixed element are sealed into an end face sealing structure, and a sealing element uses a rubber ring. Zero wear is arranged between the moveable element and the fixed element. Thus, the sensitivity of the operation is high, and the operational reliability of a fluid control apparatus system can be effectively raised.

Description

Regulate selector valve

Technical field: the utility model relates to a kind of selector valve of controlling fluid flow direction, belongs to a kind of pressure flow body that utilizes and drives the also valve of can regulate driving pressure flow direction.

Background technique: in fluid control apparatus system, the general device that the control flows direction of flow all will be arranged, all be to adopt slide-valve structure and piston cylinder operator at present, cut off by control slider or position of piston, to connect different fluid passages, reach the purpose that makes fluid change flow direction, the sealing position of these devices is to reach sealing by the fluid resistance that the micro-gap between movement parts and fixed block produces, thereby there is a clearance leakage, moving surface wearing and tearing mutually, problems such as the sensitive reversing degree is not high will influence the working efficiency and the reliability of whole fluid control apparatus system like this.

Summary of the invention: technical problem to be solved in the utility model is to provide a kind of adjusting selector valve, and it adopts diaphragm to make actuator, and spring is done to regulate pressure piece, is sealed into end face seal structure between movement parts and fixed block, and Sealing adopts rubber ring.Because nothing is worn and torn between its moving element and the fixed block, thereby the action sensitivity height, can effectively improve the functional reliability of fluid control apparatus system.

The utility model technical solution problem adopts following technological scheme:

The utility model is by front shroud, preceding changeover valve core, back changeover valve core, valve rod, valve body, cover in the valve body, tailstock, diaphragm, the diaphragm top board, the diaphragm press table, the diaphragm seat, thrust plate, spring, bolt, nut, compositions such as rubber seal, in preceding changeover valve core both ends of the surface and axis hole, rubber seal is housed respectively, and be fixed on the valve rod underpart with nut, the valve body cavity of resorption of packing into, with bolt front shroud is connected with valve body, the valve rod end is stretched in the front shroud guide hole, back changeover valve core both ends of the surface are equipped with rubber seal and with the drive fit mode back changeover valve core are fixed in the valve rod on the position, cover passes valve rod and is fixed on valve body top with the drive fit mode in the valve body, the diaphragm seat passes valve rod and connects with valve body top with bolt, on valve rod top the diaphragm press table is housed, diaphragm, the diaphragm top board, and with nut with the diaphragm press table, diaphragm, the diaphragm top board is fixed on the valve rod, with tailstock with pressing diaphragm on the diaphragm seat, and with bolt with tailstock, diaphragm and diaphragm seat are connected and fixed, spring is housed in tailstock, thrust plate, spring is between thrust plate and diaphragm top board, open tapped hole at the tailstock top, the adjusting bolt is housed in the tapped hole, regulating the bolt end is pressed on the thrust plate, contacting point in front shroud and valve body lower portion, the contacting point of cover in valve body top and the valve body, rubber seal all is equipped with in the contacting point of valve body top and diaphragm seat, on valve body, have 4 through holes, have a through hole in the front shroud bottom, on the diaphragm seat, have a through hole.

During work, the utility model is introduced each through hole on valve body, front shroud, the diaphragm seat by pipeline with pressure fluid, can realize its effect.

The driving pressure of the pressure fluid of introducing when the through hole on the diaphragm seat is during less than the pressure of tailstock inner spring, the rubber seal of back changeover valve core is close on the front-end face of valve body, the rubber seal of preceding changeover valve core is close on the seal face of front shroud, this moment the through hole on the front shroud with valve body on the through hole partition (not communicating) of foot, two through holes at valve body middle part cut off (not communicating), and in 4 through holes on the valve body, two through holes on top are interconnected, two through holes of bottom also are interconnected, thereby realize driving pressure fluid flowing between through hole.

The driving pressure of the pressure fluid of introducing when the through hole on the diaphragm seat is during greater than the pressure of tailstock inner spring, diaphragm moves upward, before the drive, latter two changeover valve core moves upward, make the rubber seal on the changeover valve core of back be close to cover in the valve body, two through holes on valve body top become partition by original connection, two through holes of valve body lower portion also become the partition state by original connected state, thereby make two through holes at original valve body 8 middle parts become connected state by original partition state, the through hole and the through hole on the front shroud of valve body foot also become connected state by original isolation, but driving pressure fluid flowing between through hole like this, promptly regulate the pressure of tailstock inner spring, thereby change the flow direction of fluid by the regulating action of regulating bolt.

The utility model with said structure, introduce the pressure of through hole press water on the diaphragm seat by control, get final product the connected state in each hole on control valve body, the front shroud, the various flows that realizes regulated fluid is to the purpose that promptly reaches commutation, and owing to there are not wearing and tearing between the utility model moving element and fixed block, thereby its action sensitivity height, can have and hand over the functional reliability that improves fluid control apparatus system.

Description of drawings:

Fig. 1 is overall structure figure of the present utility model.

Embodiment: as shown in Figure 1, the utility model is by front shroud 2, preceding changeover valve core 7, back changeover valve core 13, valve rod 14, valve body 8, cover 12 in the valve body, tailstock 18, diaphragm 24, diaphragm top board 23, diaphragm press table 25, diaphragm seat 15, thrust plate 20, spring 21,

bolt

1,17,19,34,

nut

4,22,

rubber seal

3,5,9,11,16,27,28,30,31 compositions such as grade, in preceding changeover valve core 7 both ends of the surface and axis hole, rubber seal 5 is housed respectively, 30,31, and be fixed on valve rod 14 underparts with nut 4, valve body 8 cavity of resorptions of packing into, with bolt 1 front shroud 2 is connected with valve body 8, valve rod 14 ends are stretched in front shroud 2 guide holes, back changeover valve core 13 both ends of the surface are equipped with

rubber seal

9,28 usefulness drive fit modes are fixed on back changeover valve core 13 in the valve rod 14 on the position, cover 12 passes valve rod 14 usefulness drive fit modes and is fixed on valve body 8 tops in the valve body, diaphragm seat 15 passes valve rod 14 usefulness bolts 28 and connects with valve body 8 tops, on valve rod 14 tops diaphragm press table 25 is housed, diaphragm 24, diaphragm top board 23, and with nut 22 with diaphragm press table 25, diaphragm 24, diaphragm top board 23 is fixed on the valve rod 14, with tailstock 18 diaphragm 24 is pressed on the diaphragm seat 15, and with bolt 17 with tailstock 18, diaphragm 24 is connected and fixed with diaphragm seat 15, spring 21 is housed in tailstock 18, thrust plate 20, have tapped hole at tailstock 18 tops, be equipped with in the tapped hole and regulate bolt 19, regulating bolt 19 ends is pressed on the thrust plate 20, spring 21 is between thrust plate 20 and diaphragm top board 23, in the contacting point of front shroud 2 with valve body 8 bottoms, the contacting point of cover 12 in valve body 8 tops and the valve body, rubber seal all is equipped with in the contacting point of valve body 8 tops and diaphragm seat 15, on valve body 8, have 4 through

holes

6,10,29,32, have a through hole 33 in front shroud 2 bottoms, on diaphragm seat 15, have a through hole 26.

The driving pressure of the pressure fluid of introducing when the through hole on the diaphragm seat 15 26 is during less than spring 21 pressure, the rubber seal 9 of back changeover valve core 13 is close on the front-end face of valve body 8, the rubber seal 31 of preceding changeover valve core 7 is close on the seal face of front shroud 2, this moment the through hole 33 on the front shroud 2 with valve body 8 on through hole 32 partitions (not communicating) of foot, two through holes 6 at valve body 8 middle parts and 29 cut off (not communicating), and in 4 through holes on the valve body 8, two through holes 10 on top, 29 are interconnected, two through holes 6 of bottom, 32 also are interconnected, thereby realize that the driving pressure fluid is at through hole 10, reach 6 between 29, flowing between 32.

The driving pressure of the pressure fluid of introducing when the through hole on the diaphragm seat 15 26 is during greater than the pressure of spring 21, diaphragm 24 moves upward, before the drive, latter two

changeover valve core

7,13 move upward, make the rubber seal 28 on the changeover valve core 13 of back be close to cover 12 in the valve body, two through holes 10 on valve body 8 tops, 24 become partition by original connection, valve body 8 bottoms are two through holes 6 really, 32 also become the partition state by original connected state, thereby make two through holes 6 at original valve body 8 middle parts, 29 become connected state by original partition state, the through hole 32 of valve body 8 foots also becomes connected state by original isolation with the through hole 33 on the front shroud 2, can make the driving pressure fluid at through hole 6 like this, reach 32 between 29, flowing between 33, promptly regulate the pressure of tailstock 18 inner springs 21, thereby change the flow direction of fluid by the regulating action of regulating bolt 19.

Claims

1, a kind of adjusting selector valve is by front shroud (2), preceding changeover valve core (7), back changeover valve core (13), valve rod (14), valve body (8), cover (12) in the valve body, tailstock (18), diaphragm (24), diaphragm top board (23), diaphragm press table (25), diaphragm seat (15), thrust plate (20), spring (21), bolt (1), (17), (19), (34), nut (4), (22), rubber seal (3), (5), (9), (11), (16), (27), (28), (30), (31) composition such as, it is characterized in that in preceding changeover valve core (7) both ends of the surface and axis hole, being equipped with respectively rubber seal (5), (30), (31), and be fixed on valve rod (14) underpart with nut (4), valve body (8) cavity of resorption of packing into, with bolt (1) front shroud (2) is connected with valve body (8), valve rod (14) end is stretched in front shroud (2) guide hole, back changeover valve core (13) both ends of the surface are equipped with rubber seal (9), (28) with the drive fit mode back changeover valve core (13) is fixed on the middle position of valve rod (14), cover (12) passes valve rod (14) and is fixed on valve body (8) top with the drive fit mode in the valve body, diaphragm seat (15) passes valve rod (14) and connects with valve body (8) top with bolt (28), on valve rod (14) top diaphragm press table (25) is housed, diaphragm (24), diaphragm top board (23), and with nut (22) with diaphragm press table (25), diaphragm (24), diaphragm top board (23) is fixed on the valve rod (14), with tailstock (18) diaphragm (24) is pressed on the diaphragm seat (15), and with bolt (17) with tailstock (18), diaphragm (24) is connected and fixed with diaphragm seat (15), spring (21) is housed in tailstock (18), thrust plate (20), have tapped hole at tailstock (18) top, be equipped with in the tapped hole and regulate bolt (19), regulating bolt (19) end is pressed on the thrust plate (20), spring (21) is positioned between thrust plate (20) and the diaphragm top board (23), in the contacting point of front shroud (2) with valve body (8) bottom, the contacting point of cover (12) in valve body (8) top and the valve body, rubber seal all is equipped with in the contacting point of valve body (8) top and diaphragm seat (15), on valve body (8), have 4 through holes (6), (10), (29), (32), have a through hole (33) in front shroud (2) bottom, on diaphragm seat (15), have a through hole (26).