阅读说明：本技术 一种连杆式高效密封闸阀 (Connecting rod type efficient sealing gate valve ) 是由 贾光辉 于 2019-12-09 设计创作，主要内容包括：本发明公开了一种连杆式高效密封闸阀,包括活塞缸、连接管、接口、上封盖、传动缸、右封盖和转盘,所述活塞缸左右两侧均设置有连接管,连接管与活塞缸固定连接,连接管上固定设置有接口,所述传动缸固定连接在活塞缸的右上侧,所述上封盖设置在活塞缸顶部且通过第一螺钉固定连接,所述右封盖设置在传动缸右侧且通过第二螺钉固定连接,所述右封盖右侧中部设置有丝母,与现有技术相比,本发明的有益效果是：在进行关闭阀门时,通过丝杆推动右连杆向左侧移动,进而通过上连杆和下连杆向下推动活塞,此时通过连接管处的流量逐渐减小直到阀门完全关闭,达到关闭阀门或控制流量的作用,而通过上连杆和下连杆可降低丝杆的受力,增加使用寿命。(The invention discloses a connecting rod type efficient sealing gate valve, which comprises a piston cylinder, connecting pipes, a connector, an upper sealing cover, a transmission cylinder, a right sealing cover and a rotary table, wherein the connecting pipes are arranged on the left side and the right side of the piston cylinder and fixedly connected with the piston cylinder, the connector is fixedly arranged on the connecting pipes, the transmission cylinder is fixedly connected to the upper right side of the piston cylinder, the upper sealing cover is arranged at the top of the piston cylinder and fixedly connected with the piston cylinder through a first screw, the right sealing cover is arranged on the right side of the transmission cylinder and fixedly connected with the transmission cylinder through a second screw, and a nut is arranged in the middle of the right side of the right sealing cover. When closing the valve, promote right connecting rod through the lead screw and remove to the left side, and then promote the piston downwards through upper connecting rod and lower connecting rod, the flow through connecting pipe department reduces gradually this moment until the valve closes completely, reaches the effect of closing valve or control flow, and can reduce the atress of lead screw through upper connecting rod and lower connecting rod, increase life.)

1. A connecting rod type efficient sealing gate valve comprises a piston cylinder (1), connecting pipes (2), connectors (3), an upper sealing cover (4), a transmission cylinder (6), a right sealing cover (7) and a rotary table (11), and is characterized in that the left side and the right side of the piston cylinder (1) are respectively provided with the connecting pipes (2), the connecting pipes (2) are fixedly connected with the piston cylinder (1), the connectors (3) are fixedly arranged on the connecting pipes (2), the transmission cylinder (6) is fixedly connected to the right upper side of the piston cylinder (1), the upper sealing cover (4) is arranged at the top of the piston cylinder (1) and is fixedly connected with the piston cylinder through first screws (5), the right sealing cover (7) is arranged on the right side of the transmission cylinder (6) and is fixedly connected with the transmission cylinder through second screws (19), the middle part of the right side of the right sealing cover (7) is provided with a nut (8), a lead screw (10) is arranged in the nut (8), the rotary table, the inner side of the rotary table (11) is fixedly connected with a plurality of rotary table connecting rods (12), and the rotary table connecting rods (12) are fixedly connected with the screw rod (10).

2. The connecting rod type efficient sealing gate valve as claimed in claim 1, wherein the upper side and the lower side of the nut (8) are fixedly connected with a positioning block (9), the positioning block (9) and the nut (8) are inserted into the right sealing cover (7), and the positioning block (9) is fixedly connected with the right sealing cover (7) through a third screw (20).

3. The connecting rod type efficient sealing gate valve according to claim 2, wherein a right connecting rod (18) is arranged on the left side of the screw rod (10), the screw rod (10) is rotatably connected with the right connecting rod (18), an upper connecting rod (14) is arranged on the upper left side of the right connecting rod (18), the right connecting rod (18) is rotatably connected with the lower end of the upper connecting rod (14), a lower connecting rod (15) is arranged on the lower left side of the right connecting rod (18), and the right connecting rod (18) is rotatably connected with the upper end of the lower connecting rod (15).

4. The connecting rod type efficient sealing gate valve according to claim 3, characterized in that an upper connecting block (13) is arranged at the bottom of the upper sealing cover (4), the upper connecting block (13) is rotatably connected with the upper end of an upper connecting rod (14), a piston (17) is arranged in the piston cylinder (1), the piston (17) is slidably connected with the piston cylinder, a lower connecting block (16) is fixedly connected to the top of the piston (17), and the lower connecting block (16) is rotatably connected with the lower end of a lower connecting rod (15).

5. The connecting rod type efficient sealing gate valve according to claim 4, wherein the piston (17) comprises an upper plug body (21), a lower plug body (22), a sealing slider (23), a limiting boss (24), a spring (25) and an air hole (26), a plurality of air holes (26) are formed in the upper plug body (22), the limiting boss (24) is arranged below the air hole (26), the spring (25) is arranged between the top of the limiting boss (24) and the air hole (26), the lower plug body (21) is arranged below the upper plug body (21) and fixedly connected with the upper plug body, and a sealing block (23) is arranged in the lower plug body (22) corresponding to the limiting boss (24).

Technical Field

The invention relates to a gate valve, in particular to a connecting rod type efficient sealing gate valve.

Background

The gate valve is an opening and closing member gate plate, the movement direction of the gate plate is perpendicular to the fluid direction, the gate valve is sealed through the contact of a valve seat and the gate plate, the gate valve is common in the market, the gate valve can only be fully opened and fully closed, the adjustment and throttling can not be carried out, the sealing performance of the gate plate and the bottom of the valve seat is poor, metal materials can be usually welded on a sealing surface in a surfacing mode to increase the wear resistance, and the production cost is increased. Accordingly, those skilled in the art have provided a link type high efficiency sealing gate valve to solve the above problems in the background art.

Disclosure of Invention

The invention aims to provide a connecting rod type efficient sealing gate valve to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a high-efficient sealing gate valve of connecting rod formula, includes piston cylinder, connecting pipe, interface, goes up closing cap, driving cylinder, right closing cap and carousel, the piston cylinder left and right sides all is provided with the connecting pipe, connecting pipe and piston cylinder fixed connection, the fixed interface that is provided with on the connecting pipe, driving cylinder fixed connection is at the upper right side of piston cylinder, go up the closing cap setting at the piston cylinder top and through first screw fixed connection, right closing cap setting just passes through second screw fixed connection on the driving cylinder right side, right closing cap right side middle part is provided with the screw, is provided with the lead screw in the screw, the carousel sets up on the lead screw right side, and the inboard fixedly connected with a plurality of carousel connecting rod of carousel, carousel connecting rod and.

As a further scheme of the invention: the upper side and the lower side of the screw nut are fixedly connected with positioning blocks, the positioning blocks and the screw nut are inserted into the right sealing cover, and the positioning blocks are fixedly connected with the right sealing cover through third screws.

As a still further scheme of the invention: the lead screw left side is provided with the right connecting rod, and the lead screw rotates with the right connecting rod to be connected, the upper left side of right connecting rod is provided with the upper connecting rod, and the right connecting rod rotates with the lower extreme of upper connecting rod to be connected, right connecting rod left side below is provided with down under the connecting rod, and the right connecting rod rotates with the upper end of lower connecting rod to be connected.

As a still further scheme of the invention: the upper sealing cover is characterized in that an upper connecting block is arranged at the bottom of the upper sealing cover and is rotatably connected with the upper end of an upper connecting rod, a piston is arranged in the piston cylinder and is slidably connected with the piston cylinder, a lower connecting block is fixedly connected to the top of the piston, and the lower connecting block is rotatably connected with the lower end of the lower connecting rod.

As a still further scheme of the invention: the piston comprises an upper plug body, a lower plug body, a sealing slide block, a limiting boss, a spring and an air hole, wherein a plurality of air holes are formed in the upper plug body, the limiting boss is arranged below the air hole, the spring is arranged between the top of the limiting boss and the air hole, the lower plug body is arranged below the upper plug body and fixedly connected with the upper plug body, and a sealing block is arranged at the position, corresponding to the limiting boss, in the lower plug body.

Compared with the prior art, the invention has the beneficial effects that: when closing the valve, promote right connecting rod to the left side removal through the lead screw, and then promote the piston downwards through upper connecting rod and lower connecting rod, the flow through connecting pipe department reduces gradually until the valve closes completely this moment, reach the effect of closing valve or control flow, and can reduce the atress of lead screw through upper connecting rod and lower connecting rod, increase life, but the piston directly moves the bottom of piston cylinder, with the stability of better assurance piston and the leakproofness of valve, when the piston is close the piston cylinder bottom, hydraulic pressure increase in the space between piston and the piston cylinder bottom, liquid promotes the sealed piece rebound, the air of sealed piece top overflows through the gas pocket, thereby make the pressure in the space between piston and the piston cylinder bottom can release.

Drawings

Fig. 1 is a schematic structural diagram of a connecting rod type efficient sealing gate valve.

Fig. 2 is a sectional view of a link type high efficiency sealing gate valve.

Fig. 3 is a schematic structural diagram of a piston in a connecting rod type efficient sealing gate valve.

In the figure: 1-piston cylinder, 2-connecting pipe, 3-connector, 4-upper sealing cover, 5-first screw, 6-transmission cylinder, 7-right sealing cover, 8-nut, 9-positioning block, 10-screw rod, 11-rotary table, 12-rotary table connecting rod, 13-upper connecting block, 14-upper connecting rod, 15-lower connecting rod, 16-lower connecting block, 17-piston, 18-right connecting rod, 19-second screw, 20-third screw, 21-upper plug body, 22-lower plug body, 23-sealing slide block, 24-limiting boss, 25-spring and 26-air hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 3, in the embodiment of the present invention, a connecting rod type high efficiency sealing gate valve includes a piston cylinder 1, connecting pipes 2, a connector 3, an upper sealing cover 4, a transmission cylinder 6, a right sealing cover 7 and a rotating disk 11, the connecting pipes 2 are disposed on both left and right sides of the piston cylinder 1, the connecting pipes 2 are fixedly connected with the piston cylinder 1, the connector 3 is fixedly disposed on the connecting pipes 2, the transmission cylinder 6 is fixedly connected to the upper right side of the piston cylinder 1, the upper sealing cover 4 is disposed on the top of the piston cylinder 1 and is fixedly connected through a first screw 5, the right sealing cover 7 is disposed on the right side of the transmission cylinder 6 and is fixedly connected through a second screw 19, a screw nut 8 is disposed in the middle portion of the right side of the right sealing cover 7, a lead screw 10 is disposed in the screw nut 8, the rotating disk 11 is disposed on the right side of the lead screw 10, the upper side and the lower side of the screw 8 are fixedly connected with positioning blocks 9, the positioning blocks 9 and the screw 8 are inserted in the right sealing cover 7, the positioning blocks 9 are fixedly connected with the right sealing cover 7 through third screws 20, a right connecting rod 18 is arranged on the left side of the screw 10, the screw 10 is rotatably connected with the right connecting rod 18, an upper connecting rod 14 is arranged above the left side of the right connecting rod 18, the right connecting rod 18 is rotatably connected with the lower end of the upper connecting rod 14, a lower connecting rod 15 is arranged below the left side of the right connecting rod 18, the right connecting rod 18 is rotatably connected with the upper end of the lower connecting rod 15, the rotary table 11 is rotated, the right connecting rod 18 is pushed by the screw 10 to move towards the left side, the piston 17 is further pushed downwards through the upper connecting rod 14 and the lower connecting rod 15, the flow at the moment through the connecting pipe 2 is gradually reduced until the valve is completely closed.

The bottom of the upper sealing cover 4 is provided with an upper connecting block 13, the upper connecting block 13 is rotatably connected with the upper end of an upper connecting rod 14, a piston 17 is arranged in the piston cylinder 1, the piston 17 is slidably connected with the piston cylinder, the top of the piston 17 is fixedly connected with a lower connecting block 16, the lower connecting block 16 is rotatably connected with the lower end of a lower connecting rod 15, the piston 17 comprises an upper plug body 21, a lower plug body 22, a sealing slide block 23, a limiting boss 24, a spring 25 and an air hole 26, a plurality of air holes 26 are arranged in the upper plug body 22, the limiting boss 24 is arranged below the air hole 26, the spring 25 is arranged between the top of the limiting boss 24 and the air hole 26, the lower plug body 21 is arranged below the upper plug body 21 and is fixedly connected, the sealing block 23 is arranged in the lower plug body 22 corresponding to the limiting boss 24, and when the piston 17 is close to, at the moment, the piston 17 continues to descend, the hydraulic pressure in the space between the piston 17 and the bottom of the piston cylinder 1 is increased, the liquid pushes the sealing block 23 to move upwards, and air above the sealing block 23 overflows through the air hole 26, so that the pressure intensity of the space between the piston 17 and the bottom of the piston cylinder 1 is released, and the sealing performance of the valve is better ensured.

The working principle of the invention is as follows:

the invention relates to a connecting rod type high-efficiency sealing gate valve, in the using process, a rotary table 11 is rotated, a screw rod 10 rotates along with the rotary table 11, because the nut 8 is fixedly arranged in the right sealing cover 7, when the screw rod 10 rotates, the screw rod 10 moves towards the left side, thereby pushing the right connecting rod 18 to move towards the left side, and further pushes the piston 17 downwards through the upper connecting rod 14 and the lower connecting rod 15, at this time, the flow rate at the position of the connecting pipe 2 is gradually reduced until the valve is completely closed, when the piston 17 approaches the bottom of the piston cylinder 1, the piston 17 and the bottom of the piston cylinder 1 are in a sealed state, at the moment, the piston 17 continues to descend, the hydraulic pressure in the space between the piston 17 and the bottom of the piston cylinder 1 is increased, the liquid pushes the sealing block 23 to move upwards, the air above the sealing block 23 overflows through the air hole 26, so that the pressure in the space between the piston 17 and the bottom of the piston cylinder 1 is released, and the tightness of the valve is better ensured.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.