阅读说明：本技术 一种耐磨闸阀 (wear-resistant gate valve ) 是由 粟飞 张中良 骆群华 钟家富 李俊 张乙 张晖 于 2019-09-21 设计创作，主要内容包括：本发明提供了一种耐磨闸阀,其包括阀体、密封圈、上阀板机构、下阀板机构、复位机构以及驱动机构,其中阀体包括设置于中部的流道及分设于该流道竖直方向两侧的上阀腔及下阀腔,上阀板机构沿竖直方向升降移动设置于上阀腔内,下阀板机构沿竖直方向升降移动设置于下阀腔内,其通过利用将传统的一体式闸板进行分体设置,形成上、下阀板机构,利用上、下阀板机构的交错组合封堵流道,且通过设置滑动的上阀板与下活动阀板,使上、下阀板机构不会与阀体发生磨损,并且使密封圈向内抱紧,不会向外翻起,且避免了介质沉积,解决了传统闸阀易磨损的技术问题。(the invention provides a wear-resistant gate valve which comprises a valve body, a sealing ring, an upper valve plate mechanism, a lower valve plate mechanism, a reset mechanism and a driving mechanism, wherein the valve body comprises a flow channel arranged in the middle, and an upper valve cavity and a lower valve cavity which are respectively arranged on two sides of the flow channel in the vertical direction, the upper valve plate mechanism is arranged in the upper valve cavity in a lifting and moving manner along the vertical direction, the lower valve plate mechanism is arranged in the lower valve cavity in a lifting and moving manner along the vertical direction, the upper valve plate mechanism and the lower valve plate mechanism are formed by separately arranging a traditional integrated gate plate, the flow channel is blocked by utilizing the staggered combination of the upper valve plate mechanism and the lower valve plate mechanism, the upper valve plate mechanism and the lower valve plate mechanism cannot be worn with the valve body, the sealing ring is held tightly inwards, the sealing ring cannot be turned outwards, the medium deposition is avoided, and the technical problem that the.)

1. the utility model provides a wear-resisting gate valve, includes valve body (1), valve body (1) is including setting up in runner (11) at the middle part and dividing last valve pocket (12) and lower valve pocket (13) of locating this runner (11) vertical direction both sides, its characterized in that still includes:

The sealing rings (2) are arranged annularly, are respectively arranged on the valve body (1) at the inlet and the outlet of the flow channel (11), and are coaxially arranged with the flow channel (11);

The upper valve plate mechanism (3) is arranged in the upper valve cavity (12) in a lifting and moving mode along the vertical direction and comprises symmetrically arranged upper valve plates (31), the upper valve plates (31) are arranged in a moving mode along the horizontal radial direction of the flow channel (11), and the tips of the upper valve plates (31) are arranged in a downward wedge shape;

the lower valve plate mechanism (4) is arranged in the lower valve cavity (13) in a lifting and moving mode along the vertical direction, penetrates through and is matched with the upper valve plate mechanism (3) to block the flow channel (11), and comprises a lower fixed valve plate (41) fixedly arranged in the middle of the lower valve plate mechanism and lower movable valve plates (42) symmetrically arranged on two sides of the lower fixed valve plate (41), the lower fixed valve plate (41) is arranged in a wedge shape with the tip upwards, and the lower movable valve plates (42) are arranged in a right trapezoid mode along the horizontal radial direction of the flow channel (11) in a moving mode;

the resetting mechanism (5) is arranged on the valve body (1) and comprises upper resetting components (51) symmetrically arranged on the side walls of the two sides of the upper valve cavity (12) in the length direction and lower resetting components (52) symmetrically arranged on the side walls of the two sides of the lower valve cavity (13) in the length direction, the upper resetting components (51) elastically extrude and reset the upper valve plate (31), and the lower resetting components (52) elastically extrude and reset the lower movable valve plate (42); and

and the driving mechanism (6) is installed on the valve body (1), is respectively in transmission connection with the upper valve plate mechanism (3) and the lower valve plate mechanism (4), and synchronously drives the upper valve plate (31), the lower fixed valve plate (41) and the lower movable valve plate (42) to be in lifting, penetrating and matching to seal the flow channel (11).

2. a wear-resistant gate valve according to claim 1, characterized in that the upper valve plate (31), the lower fixed valve plate (41) and the lower movable valve plate (42) have a uniform thickness D, which is related to the distance L between the sealing rings (2): d ═ 1.05L.

3. The wear-resistant gate valve of claim 1, wherein the contact surfaces of the upper valve plate (31), the lower fixed valve plate (41) and the lower movable valve plate (42) which are mutually inserted and spliced are respectively provided with a tenon (30) and a mortise (40) which are mutually inserted and matched.

4. a wear-resistant gate valve according to claim 1, wherein the upper valve plate mechanism (3) further comprises an upper connecting plate (32), the upper connecting plate (32) is arranged in a fan shape and is slidably connected with the upper valve plate (31), a sliding groove (321) is arranged at the sliding connection position of the upper connecting plate and the upper valve plate (31), and a sliding block (311) which is slidably matched with the sliding groove (321) is arranged on the upper valve plate (31).

5. a wear-resistant gate valve according to claim 1, characterized in that the lower valve plate mechanism (4) further comprises a lower connecting plate (43), the lower connecting plate (43) is arranged in a fan shape, is fixedly connected with the lower fixed valve plate (41) and is slidably connected with the lower movable valve plate (42), a sliding groove (431) is arranged at the sliding connection position of the lower connecting plate (43) and the lower movable valve plate (42), and a sliding block (421) which is slidably matched with the sliding groove (431) is arranged on the lower movable valve plate (42).

6. A wear resistant gate valve in accordance with claim 1, characterized in that the upper reset assembly (51) and the lower reset assembly (52) each comprise:

the outer shell (511) is fixedly arranged on the upper valve body (1), penetrates through the side wall of the valve body (1), and is arranged in a hollow mode;

An elastic column (512), wherein the elastic column (512) is fixedly arranged in the shell (511); and

The resetting top block (513) is fixedly connected with the elastic column (512), and a triangular top head (534) is arranged at one end of the resetting top block (513) pointing to the inner side of the valve body (1).

7. a wear resistant gate valve according to claim 1, characterized in that the driving mechanism (6) comprises:

the upper screw rod component (61) is arranged right above the upper valve cavity (12) and connected with the upper valve plate mechanism (3);

The lower screw rod assembly (62), the said lower screw rod assembly (62) is set up under the said lower valve chamber (13), it is connected with said lower valve plate mechanism (4); and

And the electric driving assembly (63) is in transmission connection with the upper screw rod assembly (61) and the lower screw rod assembly (62) respectively, and synchronously drives the upper valve plate mechanism (3) and the lower valve plate mechanism (4) to lift through the upper screw rod assembly (61) and the lower screw rod assembly (62).

8. A wear resistant gate valve in accordance with claim 7, wherein the upper wire stem assembly (61) comprises:

The upper screw rod (611) is vertically arranged on the valve body (1), and the lower end part of the upper screw rod (611) is fixedly connected with the upper valve plate mechanism (3); and

the upper screw rod nut (612) is rotationally arranged on the valve body (1), sleeved on the upper screw rod (611) and driven to rotate by the electric driving assembly (63).

9. A wear resistant gate valve in accordance with claim 8 wherein the lower screw assembly (62) comprises:

the lower screw rod (621) is vertically arranged on the valve body (1), and the upper end of the lower screw rod (621) is fixedly connected with the lower valve plate mechanism (4); and

the lower screw rod nut (622) is rotationally arranged on the valve body (1), sleeved on the lower screw rod (621) and driven to rotate by the electric driving assembly (63).

10. A wear resistant gate valve according to claim 9, characterized in that the electric drive assembly (63) comprises:

A motor (631), the motor (631) being mounted on one side of the valve body (1);

the rotating shaft (632) is vertically arranged below the motor (631), and the top of the rotating shaft (632) is coaxially connected with the rotating shaft of the motor (631);

two groups of driven synchronous pulleys (633), wherein the two groups of driven synchronous pulleys (633) are respectively sleeved on the outer sides of the upper screw nut (612) and the lower screw nut (622);

The driving synchronous pulleys (634), the driving synchronous pulleys (634) and the driven synchronous pulleys (633) are arranged in a one-to-one correspondence manner, and are all sleeved on the rotating shaft (632); and

a synchronous belt (635), the synchronous belt (635) drivingly connects the driven synchronous pulley (633) and the driving synchronous pulley (634).

Technical Field

the invention relates to the technical field of gate valves, in particular to a wear-resistant gate valve.

background

The opening and closing piece of gate valve is the flashboard, the direction of motion of flashboard is mutually perpendicular with the fluid direction, the gate valve only can be made full open and close, can not do regulation and throttle, the flashboard of gate valve is along with the valve rod and is made rectilinear motion, called the lifter gate valve, and when making the flashboard and carry out the lift switch, relative movement takes place between flashboard and the valve body and wearing and tearing appear, after the valve uses a period, because wearing and tearing, can lead to the leakproofness of valve to go wrong, and because wearing and tearing appear simultaneously in valve body and the flashboard, the medium can enter into the dynamics that increases wearing and tearing in the gap, furthermore, at the in-process that the flashboard descends, the sealing washer outwards turns up, deposit in the gap that can make the medium get into the sealing washer, when the flashboard rises to open, the.

Patent document CN201610680001.4 discloses a plate gate valve, it includes valve body, valve rod, with the inside both sides passway mutually sealed setting of valve body disk seat, be located between the disk seat of both sides and set up valve plate on the valve rod and be used for driving the valve rod and rotate around self axis and make the actuating mechanism that the valve plate oscilaltion moved and intercept or open the passageway, wherein the disk seat has the seat body with the through-hole that is linked together with the passageway including inside, the valve rod constitutes the screw-nut structure with the valve plate, especially, the disk seat still including be located the inside mounting groove that sets up around its circumference of seat body, set up in the mounting groove make disk seat and passway mouth junction have the tension ring that rises trend.

although the sealing performance of the valve seat and the valve body is strong by arranging the tension ring in the patent, the following problems still exist in the using process:

1. when the flashboard is opened, media can be accumulated in the groove at the lower part to abrade the flashboard;

2. In the descending process of the flashboard, the sealing ring is subjected to outward turning force due to the friction between the flashboard and the sealing ring, so that the sealing property of the sealing ring is reduced;

3. In the process of opening the flashboard up and down, the flashboard and the valve body are abraded.

Disclosure of Invention

In order to solve the problems, the invention provides a wear-resistant gate valve, which is characterized in that a traditional integrated gate plate is arranged in a split manner to form an upper valve plate mechanism and a lower valve plate mechanism, a flow passage is blocked by the aid of staggered combination of the upper valve plate mechanism and the lower valve plate mechanism, the upper valve plate mechanism and the lower valve plate mechanism are prevented from being worn by a valve body by the aid of the sliding upper valve plate and the sliding lower movable valve plate, a sealing ring is held inwards and cannot be turned outwards, medium deposition is avoided, and the technical problem that the traditional gate valve is easy to wear is solved.

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

the utility model provides a wear-resisting gate valve, includes the valve body, the valve body still includes including setting up in the runner at middle part and dividing the last valve pocket and the lower valve pocket of locating the vertical direction both sides of this runner:

the sealing rings are arranged in an annular shape, are respectively arranged on the valve bodies at the inlet and the outlet of the flow passage and are coaxially arranged with the flow passage;

the upper valve plate mechanism is arranged in the upper valve cavity in a lifting and moving mode along the vertical direction and comprises symmetrically arranged upper valve plates, the upper valve plates are arranged in a moving mode along the horizontal radial direction of the flow channel, and the upper valve plates are arranged in a wedge shape with the pointed ends facing downwards;

the lower valve plate mechanism is arranged in the lower valve cavity in a lifting and moving mode along the vertical direction, penetrates through and is matched with the upper valve plate mechanism to block the flow channel correspondingly, the lower valve plate mechanism comprises a lower fixed valve plate fixedly arranged in the middle of the lower valve plate mechanism and lower movable valve plates symmetrically arranged on two sides of the lower fixed valve plate, the lower fixed valve plate is arranged in a wedge shape with the pointed end upwards, and the lower movable valve plate is arranged in a right trapezoid mode along the horizontal radial direction of the flow channel in a moving mode;

The resetting mechanism is arranged on the valve body and comprises upper resetting components symmetrically arranged on the side walls of the two sides of the upper valve cavity in the length direction and lower resetting components symmetrically arranged on the side walls of the two sides of the lower valve cavity in the length direction, the upper resetting components elastically extrude and reset the upper valve plate, and the lower resetting components elastically extrude and reset the lower movable valve plate; and

And the driving mechanism is arranged on the valve body, is respectively in transmission connection with the upper valve plate mechanism and the lower valve plate mechanism, synchronously drives the upper valve plate, the lower fixed valve plate and the lower movable valve plate to be in lifting, penetrating and matching, and blocks the flow channel.

as an improvement, the upper valve plate, the lower fixed valve plate and the lower movable valve plate have the same thickness, the thicknesses are all D, and a relationship exists between the thicknesses and a distance L between the sealing rings: d ═ 1.05L.

as an improvement, the contact surfaces of the upper valve plate, the lower fixed valve plate and the lower movable valve plate which are mutually inserted and spliced are respectively provided with a tenon and a mortise which are mutually inserted and matched.

as an improvement, the upper valve plate mechanism further comprises an upper connecting plate, the upper connecting plate is arranged in a fan shape and is in sliding connection with the upper valve plate, a sliding groove is formed in the sliding connection position of the upper connecting plate and the upper valve plate, and a sliding block in sliding fit with the sliding groove is arranged on the upper valve plate.

As an improvement, the lower valve plate mechanism further comprises a lower connecting plate, the lower connecting plate is arranged in a fan shape, fixedly connected with the lower fixed valve plate and slidably connected with the lower movable valve plate, a sliding groove is formed in the sliding connection position of the lower connecting plate and the lower movable valve plate, and a sliding block in sliding fit with the sliding groove is arranged on the lower movable valve plate.

As an improvement, the upper reset assembly and the lower reset assembly both comprise:

The shell is fixedly arranged on the upper valve body, penetrates through the side wall of the valve body and is arranged in a hollow mode;

The elastic column is fixedly arranged in the shell; and

The reset ejector block is fixedly connected with the elastic column and points to one end of the inner side of the valve body, and a triangular ejector head is arranged at one end of the inner side of the valve body.

As an improvement, the drive mechanism includes:

The upper screw rod component is arranged right above the upper valve cavity and is connected with the upper valve plate mechanism;

The lower screw rod assembly is arranged right below the lower valve cavity and is connected with the lower valve plate mechanism; and

And the electric driving assembly is in transmission connection with the upper screw rod assembly and the lower screw rod assembly respectively, and synchronously drives the upper valve plate mechanism and the lower valve plate mechanism to lift through the upper screw rod assembly and the lower screw rod assembly.

As an improvement, the upper screw rod assembly comprises:

the upper screw rod is vertically arranged on the valve body, and the lower end part of the upper screw rod is fixedly connected with the upper valve plate mechanism; and

the upper screw rod nut is rotatably arranged on the valve body, sleeved on the upper screw rod and driven to rotate by the electric drive assembly.

as an improvement, the lower screw assembly comprises:

The lower screw rod is vertically arranged on the valve body, and the upper end of the lower screw rod is fixedly connected with the lower valve plate mechanism; and

and the lower screw rod nut is rotatably arranged on the valve body, sleeved on the lower screw rod and driven to rotate by the electric drive assembly.

as an improvement, the electric drive assembly comprises:

The motor is arranged on one side of the valve body;

The rotating shaft is vertically arranged below the motor, and the top of the rotating shaft is coaxially connected with the rotating shaft of the motor;

Two groups of driven synchronous belt pulleys are arranged and are respectively sleeved on the outer sides of the upper screw rod nut and the lower screw rod nut;

the driving synchronous belt pulleys and the driven synchronous belt pulleys are arranged in a one-to-one correspondence manner and are all sleeved on the rotating shaft; and

and the synchronous belt is in transmission connection with the driven synchronous belt pulley and the driving synchronous belt pulley.

the system of the invention has the advantages that:

(1) According to the invention, the traditional integrated gate plate is arranged in a split manner to form the upper valve plate mechanism and the lower valve plate mechanism, the flow channel is blocked by utilizing the staggered combination of the upper valve plate mechanism and the lower valve plate mechanism, and the lower valve cavity is blocked in the lifting process of the lower valve plate mechanism, so that the valve plate can be effectively prevented from being abraded due to the deposition of a medium in the lower valve cavity, and the service life of the valve plate is effectively prolonged;

(2) According to the invention, the sealing ring is forced to two sides of the valve body by utilizing the sliding of the upper valve plate and the lower movable valve plate, so that the sealing ring inwards holds the corresponding upper valve plate mechanism and the lower valve plate mechanism, the sealing ring is prevented from being turned outwards, and simultaneously, a medium is deposited in a gap;

(3) the sliding of the upper valve plate and the lower movable valve plate is utilized, so that the upper valve plate and the lower movable valve plate are prevented from being directly in friction contact with the valve body in the lifting process, the abrasion among the valve body, the upper valve plate and the lower movable valve plate is avoided, and the service life of the whole valve can be prolonged;

(4) The upper valve plate, the lower fixed valve plate and the lower movable valve plate are connected in an inserting manner by the aid of the tenon and the mortise, so that the upper valve plate mechanism and the lower valve plate mechanism are higher in sealing performance when being spliced, and a medium is prevented from leaking from gaps among the valve plates;

(5) according to the invention, the upper valve plate mechanism and the lower valve plate mechanism are synchronously driven by the driving mechanism to be spliced in an inserting manner, so that the upper valve plate mechanism and the lower valve plate mechanism are better in synchronism, and the connection tightness during splicing between the upper valve plate mechanism and the lower valve plate mechanism can be improved;

(6) The invention utilizes the up-and-down lifting between the upper valve plate mechanism and the lower valve plate mechanism, compared with the integral lifting of the traditional valve plate, the pressure of the whole valve plate to a medium is smaller, the required power for starting the lifting is correspondingly reduced, the use requirement on a driving mechanism can be reduced, and the invention is suitable for more use environments.

In conclusion, the gate valve has the advantages of high sealing performance, wear resistance of the gate plate and the valve body, long service life and the like, and is particularly suitable for the technical field of gate valves.

drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a first schematic cross-sectional view of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

FIG. 4 is a third schematic sectional view of the present invention;

FIG. 5 is a partial schematic view of the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 2;

FIG. 7 is an enlarged view of the structure at B in FIG. 3;

FIG. 8 is a schematic view of the moving structure of the upper valve plate and the sealing ring according to the present invention;

FIG. 9 is a schematic view of the tightening structure of the upper valve plate and the sealing ring according to the present invention;

FIG. 10 is a schematic view of the moving structure of the lower movable valve plate and the sealing ring according to the present invention;

FIG. 11 is a schematic view of the clasping structure of the lower movable valve plate and the sealing ring according to the present invention;

FIG. 12 is a schematic perspective view of a lower movable valve plate according to the present invention;

FIG. 13 is a schematic perspective view of an upper valve plate according to the present invention;

FIG. 14 is a schematic cross-sectional view of an upper connecting plate according to the present invention;

fig. 15 is a schematic perspective view of the lower connecting plate of the present invention.

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.

in the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.