CN201672082U

CN201672082U - Multistage friction free parallel gate valve

Info

Publication number: CN201672082U
Application number: CN2010202214093U
Authority: CN
Inventors: 潘成涨; 张清明
Original assignee: LIANGGONG VALVE CO Ltd
Current assignee: LIANGGONG VALVE CO Ltd
Priority date: 2010-06-07
Filing date: 2010-06-07
Publication date: 2010-12-15
Anticipated expiration: 2020-06-07

Abstract

The utility model relates to a multistage friction free parallel gate valve, which comprises a valve body having a water inlet cavity and a water outlet cavity, a valve cover disposed on one end of the valve body, a valve seat disposed between the water inlet cavity and the water outlet cavity of the valve body, two damper plates in sliding fit with the valve seat to conduct and close the water inlet cavity and the water outlet cavity, and a damper plate control mechanism; the valve cover and the valve body defines a control cavity of accommodating control mechanism; the control mechanism comprises a handwheel disposed on the outer end of the valve cover; a first stage screw with one end disposed in the control cavity and the other end in circumferential linkage with the handwheel; a linkage block with the outer side in circumferential linkage fit with the end of the first stage screw disposed in the control cavity, a second stage screw in circumferential linkage fit with the inner side of the linkage block, and a third stage screw with one end in circumferential linkage fit with the second stage screw and the other end in linkage fit with the screw thread on the inner side of the damper plate to compose a damper plate for opening and closing the third stage screw; an inner cavity is disposed in the third stage screw; the end of the second stage screw matching with the third stage screw is inserted into the inner cavity while in screw thread fit with the inner cavity wall. The valve of the utility model overcomes the defects in prior arts, and achieves the purposes of small volume and rapid opening-closing.

Description

The multistage nothing parallel gate valve that rubs

Technical field

The utility model relates to gate valve, the particularly multistage nothing parallel gate valve that rubs.

Background technique

The open-shut device of gate valve is a flashboard, the moving direction and the flow direction of flashboard are perpendicular, gate valve can only be done standard-sized sheet and full cut-off operation, can not make the usefulness of adjusting and throttling, gate valve is most widely used in the industry pipeline of valve, but more existing gate valves all have long, the complex structure and other problems of opening and closing time, and reason is exactly that the operating device structure of its switching is loaded down with trivial details.

Summary of the invention

Be to solve the deficiencies in the prior art, the utility model provides a kind of volume multistage nothing little, can fast opening and closing parallel gate valve that rubs.

For achieving the above object, the multistage nothing that the utility model the provides parallel gate valve that rubs, comprise the valve body of bringing water cavity and water chamber into, be located at the valve gap of valve body one end, be located at the valve seat between valve inleting water chamber and the water chamber, be the control mechanism that slippage cooperates and constitute water-inlet cavity and water chamber conducting or two flashboards of closing and flashboard with valve seat, described valve gap and valve body form the control chamber of ccontaining control mechanism, be characterized in that described control mechanism comprises the handwheel that places the valve gap outer end, one end places the circumferentially one-level screw rod of interlock of the control chamber and the other end and handwheel, the outside places the interlock piece of the circumferential interlock of an end of control chamber with the one-level screw rod, circumferentially link three grades of screw rods of the other end and interlock of flashboard respective inner screw thread and the keying of formation flashboard of a secondary screw rod that is linked with interlock piece inner circumferential and an end and secondary screw rod, described three grades of screw rods are provided with inner chamber, the end that the secondary screw rod cooperates with three grades of screw rods be inserted in this inner chamber and with the internal chamber wall screw-thread fit.

Multistage nothing with the above-mentioned setting parallel gate valve that rubs, just can drive the one-level screw rod by the rotation of handwheel circumferentially rotates, then drive the interlock piece and circumferentially rotate, drive the secondary screw rod then and circumferentially rotate, last secondary screw rod drives three grades of screw rods and rotates, so just realized that handwheel controls to flashboard, the transmission of its power is all linked with one another, moves smooth and easyly, and the opening and closing of valve can both be very rapid, each parts of control mechanism all are to place control chamber simultaneously, therefore can realize the miniaturization of valve.Wherein, water-inlet cavity is relative address with water chamber.

The utility model further is set to: described one-level screw rod is provided with square block with the end that the interlock piece cooperates, the outside that described interlock piece cooperates with the one-level screw rod is provided with first cavity adaptive with this square block, and described square block places this first cavity and constitutes the one-level screw rod and the interlock of interlock piece.

Multistage nothing with the above-mentioned setting parallel gate valve that rubs, square block places cavity, and when the one-level screw rod rotated, because be the square block that is square, so square block can drive the rotation of the piece that links, and it designs very advantages of simple practicality.

The utility model further is set to again: the inboard that described interlock piece cooperates with the secondary screw rod is provided with some convex tendons, described secondary screw rod is provided with second cavity adaptive with described convex tendon with the end that the interlock piece cooperates, and described convex tendon places second cavity and constitutes the interlock of interlock piece and secondary screw rod.

Multistage nothing with the above-mentioned setting parallel gate valve that rubs, the synchronization motion between piece and the secondary screw rod of just well realizing linking designs same advantages of simple practicality.

The utility model further is set to again: described flashboard comprises the mainboard body that cooperates with the valve seat slippage and places on the mainboard body inner side surface and the control panel that cooperates with three grades of screw flights, the inner side surface of described mainboard body is at the hinged snap close that is provided with of the side of control panel, the below that control panel is positioned at the hinged place is provided with the groove of side direction, snap close is provided with adaptive with this groove and pegs graft with groove or separate cooperation to constitute control panel and mainboard body vertically interlock or the folding hook that moves respectively, the both sides that snap close is positioned at the hinged place also are respectively equipped with outer projection and projection, control panel is provided with the control shoulder rank of conflicting and cooperating and constitute snap close folding hook to cooperate with the grafting of control panel groove with interior projection at the side of interior projection, described valve body is provided with the limited shoulder rank in the corresponding position with snap close, the cooperation of conflicting and cooperate and constitute snap close folding hook and control panel groove in the limited shoulder rank of described outer projection and valve body that separates, the mainboard body inner side surface of wherein said flashboard is the hypotenuse setting, control panel and mainboard are shown consideration for the outer side surface that closes and are the hypotenuse setting adaptive with mainboard body inner side surface, and wherein the mainboard body is thinner near an end of valve gap.

Multistage nothing with the above-mentioned setting parallel gate valve that rubs, when opening, control panel moves at first, can drive the mainboard body and do the axial travelling backwards of turnover water cavity, has also just realized contactless, zero friction of mainboard body and valve seat; When closing, the mainboard body also can fall to spacing place at contactless state, promotes the mainboard body by control panel and moves axially along the turnover water cavity, realizes that the horizontal moving type of flashboard and valve seat contacts.The conflict on wherein outer projection and limited shoulder rank forms the range of flashboard when descending, and simultaneously above-mentioned the setting can guarantee double-flashboard at first obtain to link moment and obtained interlock moment at last when closing when opening, better realize both actions.

The utility model further is set to again: the joint of described valve gap and valve body is respectively equipped with the boss of band hypotenuse, and described gate valve is provided with and closely is set on the boss and fastening mutually two cutting ferrules that are connected with formation valve gap and valve body.

Multistage nothing with the above-mentioned setting parallel gate valve that rubs, it is installed and connects just more conveniently, also can reduce its cost simultaneously.

The utility model further is set to again: between described secondary screw rod and the three grades of screw rods and the screw thread between three grades of screw rods and the control panel be the bull trapezoidal thread.

Multistage nothing with the above-mentioned setting parallel gate valve that rubs, by the bull trapezoidal thread, its transmission better effects if reduces the starting torque of handwheel simultaneously.

The utility model beneficial effect is: by the conduction of multi-stage screw, realized rapidization of the flashboard keying of gate valve, realized that simultaneously the frictionless flashboard opens and closes the contact keying form of form and horizontal moving type, whole gate valve structure is reasonable, cost is low, can stable operation.

Below in conjunction with the drawings and specific embodiments the utility model is done further introduction.

Description of drawings

Fig. 1 is the utility model example structure schematic representation.

Fig. 2 is the utility model embodiment secondary screw-rod structure schematic representation.

Fig. 3 is three grades of screw-rod structure schematic representation of the utility model embodiment.

Flashboard structure schematic representation when Fig. 4 is the utility model embodiment valve closes.

Flashboard structure schematic representation when Fig. 5 is the utility model embodiment valve opening.

Fig. 6 is the utility model embodiment valve limited shoulder stage structure schematic representation.

Fig. 7 is the utility model embodiment cutting ferrule structural representation.

Embodiment

As Fig. 1-shown in Figure 7, the utility model embodiment, be a kind of multistage nothing parallel gate valve that rubs, comprise the valve body 1 of bringing water cavity 11 and water chamber 12 into, be located at the valve gap 2 of valve body 1 one ends, be located at the valve seat 3 between valve body 1 water-inlet cavity 11 and the water chamber 12, be the control mechanism that slippage cooperates and constitute water-inlet cavity 11 and water chamber 12 conductings or two flashboards 4 of closing and flashboard 4 with valve seat 3, described valve gap 2 and valve body 1 form the control chamber 13 of ccontaining control mechanism, described control mechanism comprises the handwheel 5 that places valve gap 2 outer ends, one end places the circumferentially one-level screw rod 14 of interlock of the control chamber 13 and the other end and handwheel 5, the outside places the interlock piece 15 of the circumferential interlock of an end of control chamber 13 with one-level screw rod 14, a secondary screw rod 16 that is linked with interlock piece 15 inner circumferential and an end and secondary screw rod 16 be three grades of screw rods 17 of the interlock the other ends and interlock of flashboard 4 respective inner screw threads and 4 keyings of formation flashboard circumferentially, described three grades of screw rods 17 are provided with inner chamber 171, the end that secondary screw rod 16 cooperates with three grades of screw rods 17 be inserted in this inner chamber 171 and with the internal chamber wall screw-thread fit.

In the present embodiment, described one-level screw rod 14 is provided with square block 141 with the end that interlock piece 15 cooperates, the outside that described interlock piece 15 cooperates with one-level screw rod 14 is provided with first cavity 151 adaptive with this square block 141, and described square block 141 places this first cavity 151 and constitutes the interlock of one-level screw rod 14 and interlock piece 15.Equally, the inboard that described interlock piece 15 cooperates with secondary screw rod 16 is provided with some convex tendons 152, described secondary screw rod 16 and the end that cooperates of interlock piece 15 are provided with second cavity 161 adaptive with described convex tendon 152, and described convex tendon 152 places second cavity 161 and constitutes the interlock of interlock piece 15 and secondary screw rod 16.

In the present embodiment, described flashboard 4 comprise the mainboard body 41 that cooperates with valve seat 3 slippages and place on mainboard body 41 inner side surfaces and with the control panel 42 of three grades of screw rod 17 screw-thread fit, the inner side surface of described mainboard body 41 is at the hinged snap close 43 that is provided with of the side of control panel 42, the below that control panel 42 is positioned at the hinged place is provided with the groove 421 of side direction, snap close 43 is provided with adaptive with this groove 421 and pegs graft with groove 421 or separate cooperation to constitute control panel 42 and mainboard the body 41 vertically interlock or the folding hooks 431 of action respectively, the both sides that snap close 43 is positioned at the hinged place also are respectively equipped with outer projection 432 and projection 433, control panel 42 is provided with to conflict to cooperate and constitutes snap close 43 folding hooks 431 with interior projection 433 at the side of interior projection 433 takes on rank 422 with the control that 421 grafting of control panel 42 grooves cooperate, described valve body 1 is provided with limited shoulder rank 18 in the corresponding position with snap close 43, the cooperation of conflicting and cooperate and constitute snap close 43 folding hooks 431 and control panel 42 grooves 421 in the limited shoulder rank of described outer projection 432 and valve body 1 that separates, mainboard body 41 inner side surfaces of wherein said flashboard 4 are the hypotenuse setting, control panel 42 is the hypotenuse setting adaptive with mainboard body 41 inner side surfaces with the outer side surface that mainboard body 41 is fitted, and wherein mainboard body 41 is thinner near an end of valve gap 2.

In the present embodiment, described valve gap 2 is respectively equipped with the boss 21 of being with hypotenuse with the joint of valve body 1, described gate valve is provided with and closely is set on the boss 21 and fastening mutually two cutting ferrules 19 that are connected with formation valve gap 2 and valve body 1, and sealing is realized by a capping 22 in the upper end portion of valve gap 2, and one-level screw rod 14 runs through capping 22.

In the present embodiment, between described secondary screw rod 16 and the three grades of screw rods 17 and the screw thread between three grades of screw rods 17 and the control panel 42 be the bull trapezoidal thread.

Claims

1. a multistage nothing parallel gate valve that rubs, comprise the valve body of bringing water cavity and water chamber into, be located at the valve gap of valve body one end, be located at the valve seat between valve inleting water chamber and the water chamber, be the control mechanism that slippage cooperates and constitute water-inlet cavity and water chamber conducting or two flashboards of closing and flashboard with valve seat, described valve gap and valve body form the control chamber of ccontaining control mechanism, it is characterized in that: described control mechanism comprises the handwheel that places the valve gap outer end, one end places the circumferentially one-level screw rod of interlock of the control chamber and the other end and handwheel, the outside places the interlock piece of the circumferential interlock of an end of control chamber with the one-level screw rod, circumferentially link three grades of screw rods of the other end and interlock of flashboard respective inner screw thread and the keying of formation flashboard of a secondary screw rod that is linked with interlock piece inner circumferential and an end and secondary screw rod, described three grades of screw rods are provided with inner chamber, the end that the secondary screw rod cooperates with three grades of screw rods be inserted in this inner chamber and with the internal chamber wall screw-thread fit.

2. the multistage nothing according to claim 1 parallel gate valve that rubs, it is characterized in that: described one-level screw rod is provided with square block with the end that the interlock piece cooperates, the outside that described interlock piece cooperates with the one-level screw rod is provided with first cavity adaptive with this square block, and described square block places this first cavity and constitutes the one-level screw rod and the interlock of interlock piece.

3. the multistage nothing according to claim 1 parallel gate valve that rubs, it is characterized in that: the inboard that described interlock piece cooperates with the secondary screw rod is provided with some convex tendons, described secondary screw rod is provided with second cavity adaptive with described convex tendon with the end that the interlock piece cooperates, and described convex tendon places second cavity and constitutes the interlock of interlock piece and secondary screw rod.

4. according to claim 1 or the 2 or 3 described multistage nothings parallel gate valve that rubs, it is characterized in that: described flashboard comprises the mainboard body that cooperates with the valve seat slippage and places on the mainboard body inner side surface and the control panel that cooperates with three grades of screw flights, the inner side surface of described mainboard body is at the hinged snap close that is provided with of the side of control panel, the below that control panel is positioned at the hinged place is provided with the groove of side direction, snap close is provided with adaptive with this groove and pegs graft with groove or separate cooperation to constitute control panel and mainboard body vertically interlock or the folding hook that moves respectively, the both sides that snap close is positioned at the hinged place also are respectively equipped with outer projection and projection, control panel is provided with the control shoulder rank of conflicting and cooperating and constitute snap close folding hook to cooperate with the grafting of control panel groove with interior projection at the side of interior projection, described valve body is provided with the limited shoulder rank in the corresponding position with snap close, the cooperation of conflicting and cooperate and constitute snap close folding hook and control panel groove in the limited shoulder rank of described outer projection and valve body that separates, the mainboard body inner side surface of wherein said flashboard is the hypotenuse setting, control panel and mainboard are shown consideration for the outer side surface that closes and are the hypotenuse setting adaptive with mainboard body inner side surface, and wherein the mainboard body is thinner near an end of valve gap.

5. the multistage nothing according to claim 4 parallel gate valve that rubs, it is characterized in that: the joint of described valve gap and valve body is respectively equipped with the boss of band hypotenuse, and described gate valve is provided with and closely is set on the boss and fastening mutually two cutting ferrules that are connected with formation valve gap and valve body.

6. the multistage nothing according to claim 5 parallel gate valve that rubs is characterized in that: between described secondary screw rod and the three grades of screw rods and the screw thread between three grades of screw rods and the control panel be the bull trapezoidal thread.