CN210623628U

CN210623628U - Split knife gate valve

Info

Publication number: CN210623628U
Application number: CN201921519189.XU
Authority: CN
Inventors: 王帅
Original assignee: Zhengzhou Ludu Valve Co ltd
Current assignee: Zhengzhou Ludu Valve Co ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-05-26
Anticipated expiration: 2029-09-12

Abstract

The utility model discloses a split type knife gate valve, including valve body, lift unit and damming unit, the upper end of valve body is equipped with the installation cavity with inside intercommunication, and the top of installation cavity is equipped with the end cover, and the installation cavity is installed and is dammed the unit, the lift unit is installed on the upper portion of valve body, the lift unit contains rolling wheel, antifriction bearing, installation axle, lifting gear and hand wheel, the both ends of installation axle are fixed with antifriction bearing respectively, antifriction bearing passes and rotates and connects in the both sides wall of valve body upper end, the middle part fixedly connected with lifting gear of installation axle, one end of installation axle passes one of them antifriction bearing and fixedly connected with rolling wheel, rotate on the rotation plane of rolling wheel and be connected with hand wheel; the hand-operated wheel can be rotated by hand to drive the rotating wheel to rotate along the plane where the hand-operated wheel is located, and the split knife-type gate valve is good in sealing effect, long in service life, convenient to overhaul and low in cost.

Description

Split knife gate valve

Technical Field

The utility model relates to a valve technical field specifically is a split type sword type gate valve.

Background

At present, the valve bodies of knife gate valves in pipelines for conveying viscous liquid in industries such as papermaking and sewage treatment are traditional valve bodies, the knife gate valves have the advantages of simple and compact structure, reasonable design, light material saving, reliable sealing, light and flexible operation, small volume, smooth channel, small flow resistance, light weight, easy installation, easy disassembly and the like, and can normally work under the working pressure of 1.0-2.5 MPa and the use temperature of-29-650 ℃; the gate plate of the knife gate valve has a shearing function, can scrape off adhesive on a sealing surface and automatically remove sundries, and the stainless steel gate plate can prevent sealing leakage caused by corrosion. According to application number 201420816021.6's a split type knife gate valve, including the valve body, install the flashboard in the valve body, all be provided with on the inner wall of import in the valve body and export with flashboard complex disk seat, the flashboard top is fixed with the valve rod, is provided with the packing cover above the valve body, and the packing cover top is fixed with the support, and the hand wheel mechanism of control valve rod up-and-down motion is installed to the support top, and the valve rod upper end is connected with hand wheel mechanism, the packing cover sets up with the valve body components of a whole that can function independently, and it has the filler to fill between packing cover and the valve rod, and the. The split knife gate valve is easy to block and has poor sealing effect, short service life, inconvenient maintenance and higher cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome current defect, provide a split type sword type gate valve, it is sealed effectual, longe-lived, convenient the maintenance, with low costs, can effectively solve the problem in the background art.

In order to achieve the above object, the utility model provides a following technical scheme: a split knife gate valve comprises a valve body, a lifting unit and a closure unit, wherein an installation cavity communicated with the inside is formed in the upper end of the valve body, an end cover is arranged at the top of the installation cavity, the closure unit is installed in the installation cavity, and the lifting unit is installed on the upper portion of the valve body; the lifting unit comprises a rotating wheel, a rolling bearing, an installation shaft, a lifting gear and a hand-operated wheel, wherein the rolling bearing is fixedly sleeved at two ends of the installation shaft respectively, the rolling bearing penetrates through and is connected to two side walls of the upper end of the valve body in a rotating mode, the lifting gear is fixedly connected to the middle of the installation shaft, one end of the installation shaft penetrates through one rolling bearing and is fixedly connected with the rotating wheel, and the rotating wheel is rotatably connected to a rotating plane of the rotating wheel; the hand-operated wheel can be rotated by hands to drive the rotating wheel to rotate along the plane where the hand-operated wheel is located, so that the mounting shaft is driven to rotate, the lifting gear is further driven to rotate, and the rotating wheel can also be directly operated by hands; the shutoff unit comprises a lifting rack, a shutoff baffle and a flat plate, the lifting rack is meshed with the lifting gear, the lower end of the lifting rack is fixedly connected with the shutoff baffle, the shutoff baffle is slidably connected in a longitudinal chute in the valve body, the upper end of the lifting gear penetrates through the middle part of the end cover and is slidably connected with the end cover, the flat plate is fixedly connected to the lower surface in the valve body, and the upper surface of the flat plate is arranged corresponding to the lower surface of the shutoff baffle; the lifting gear is driven to rotate through the lifting gear to move up and down, the lifting gear drives the closure baffle to open and close in the up-down direction, and the flat plate arranged on the lower surface inside the valve body can enable the valve body to be opened and closed more tightly.

The valve body is provided with a valve body, a valve body is arranged in the valve body, the valve body is provided with a valve seat, the valve seat is provided with a valve seat, the valve body is provided with a valve seat, the valve seat is provided with a valve body, the valve body is provided with a valve body; the communicating part of the low-position pipe and the high-position pipe forms a certain height difference, so that the condition that the valve is not closed tightly due to the accumulation of sediments in long-term use can be prevented.

The sealing device further comprises two sealing rubber rings which are respectively arranged on the end surfaces of the high-position pipe and the low-position pipe; the butted pipelines can form a tighter environment through the sealing rubber rings, and the liquid leakage condition caused under high pressure is reduced.

The screw holes are distributed in an annular array and respectively penetrate through the end faces of the two ends of the high-position pipe and the low-position pipe; the knife gate valve can be fixedly connected on different pipelines through screw holes.

Further, still include bottom sealing strip and upper portion sealing strip, the bottom sealing strip is equipped with one, and fixed connection can increase sealed effect effectively in the drop face department that high-order pipe and low level pipe are connected, increase of service life, the upper portion sealing strip is equipped with two, and fixed connection is at the internal surface on installation cavity upper portion respectively, and the upper portion sealing strip can prevent effectively that the liquid of circulation upwards flows in the pipeline when the valve is opened, causes the corruption of liquid to lifting gear and lifting rack, and the emergence of the corruption condition can be avoided in the setting of upper portion sealing strip.

Compared with the prior art, the beneficial effects of the utility model are that: this split type sword type gate valve has following benefit:

1. this split type sword type gate valve through the setting of high-order pipe, low order pipe, upper portion sealing strip and lower part sealing strip, forms dual seal effect, both can prevent that the sealed not tight condition that debris deposit caused from taking place, also can prevent liquid in the pipeline to the corruption of lifting unit, further life that has prolonged use.

2. Through the setting of lift unit and end cover, on the one hand carry out the switching operation in the side, on the other hand end cover sets up to the form that can, can overhaul inside like this, makes the convenient practicality of operation higher more.

3. This split type sword type gate valve has realized through mutually supporting of structure that it is easier to overhaul, and it is more convenient to maintain to greatly reduced use cost is favorable to wideling popularize and use.

Drawings

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

fig. 2 is a schematic view of the back sectional structure of the present invention.

In the figure: the device comprises a valve body 1, a lifting unit 2, a rotating wheel 21, a rolling bearing 22, a mounting shaft 23, a lifting gear 24, a hand wheel 25, a closure unit 3, a lifting rack 31, a closure baffle 32, a flat plate 33, a sealing rubber ring 4, a sealing strip at the bottom 5, a screw hole 6, a sealing strip at the upper part 7, an end cover 8, a high-level pipe 9 and a low-level pipe 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a split knife gate valve comprises a valve body 1, a lifting unit 2 and a cut-off unit 3, wherein an installation cavity communicated with the inside is formed in the upper end of the valve body 1, an end cover 8 is arranged at the top of the installation cavity, the cut-off unit 3 is installed in the installation cavity, the lifting unit 2 is installed on the upper portion of the valve body 1, the split knife gate valve also comprises a low-position pipe 10 and a high-position pipe 9, the low-position pipe 10 and the high-position pipe 9 are located at ports at two ends of the valve body 1, the low-position pipe 10 is communicated and connected with the high-position pipe 9, and the lower surface of the inner side of the high-position pipe 9; the valve also comprises a sealing rubber ring 4, wherein the sealing rubber ring 4 comprises two sealing rubber rings which are respectively arranged on the end surfaces of the high-position pipe 9 and the low-position pipe 10; the butted pipelines can form a tighter environment through the sealing rubber ring 4, the liquid leakage condition caused under high pressure is reduced, the sealing rubber ring also comprises screw holes 6, the screw holes 6 are distributed in an annular array and respectively penetrate through the end faces of two ends of the high-position pipe 9 and the low-position pipe 10; the knife gate valve can be fixedly connected on different pipelines through screw holes.

The lifting unit 2 comprises a rotating wheel 21, a rolling bearing 22, a mounting shaft 23, a lifting gear 24 and a hand-operated wheel 25, wherein the rolling bearing 22 is fixedly sleeved at two ends of the mounting shaft 23 respectively, the rolling bearing 22 penetrates through and is rotatably connected into two side walls at the upper end of the valve body 1, the lifting gear 24 is fixedly connected to the middle part of the mounting shaft 23, one end of the mounting shaft 23 penetrates through one rolling bearing 22 and is fixedly connected with the rotating wheel 21, and the hand-operated wheel 25 is rotatably connected to a rotating plane of the rotating wheel 21; the hand-operated wheel 25 can be rotated by hand to drive the rotating wheel 21 to rotate along the plane, so as to drive the mounting shaft 23 to rotate, further drive the lifting gear 24 to rotate, and also can be directly operated by hand to operate the rotating wheel 21.

The intercepting unit 3 comprises a lifting rack 31, an intercepting baffle 32 and a flat plate 33, the lifting rack 31 is meshed with the lifting gear 24, the lower end of the lifting rack 31 is fixedly connected with the intercepting baffle 32, the intercepting baffle 32 is slidably connected in a longitudinal chute in the valve body 1, the upper end of the lifting gear 24 penetrates through the middle part of the end cover 8 and is slidably connected with the end cover 8, the flat plate 33 is fixedly connected with the lower surface in the valve body 1, and the upper surface of the flat plate 33 corresponds to the lower surface of the intercepting baffle 32; the rotation through the lifting gear 24 drives the lifting rack 31 to reciprocate, the lifting rack 31 drives the closure baffle 32 to open and close in the up-and-down direction, the flat plate 33 arranged on the lower surface in the valve body 1 can be opened and closed more tightly, the valve further comprises a bottom sealing strip 5 and an upper sealing strip 7, the bottom sealing strip 5 is provided with one sealing strip, the fixed connection is arranged at the position of a drop surface where the high-position pipe 9 and the low-position pipe 10 are connected, the sealing effect can be effectively improved, the service life is prolonged, the upper sealing strip 7 is provided with two sealing strips, the two sealing strips are respectively and fixedly connected to the inner surface of the upper part of the installation cavity, the upper sealing strip 7 can effectively prevent liquid circulating in the pipeline from flowing upwards when the valve is opened, the liquid corrodes the lifting gear 24.

When in use:

the external pipeline is connected with the knife gate valve through the screw hole 6, the high-level pipe 9 and the low-level pipe 10 are respectively provided with the sealing rubber ring 4 on the connecting surface of the external pipeline, the sealing rubber ring 4 plays an important role in sealing the pipeline, the hand-operated wheel 25 can be rotated by hands to drive the rotating wheel 21 to rotate along the plane, so as to drive the mounting shaft 23 to rotate, further drive the lifting gear 24 to rotate, the rotating wheel 21 can be directly operated by hands, the lifting rack 31 is driven to move up and down through the rotation of the lifting gear 24, the lifting rack 31 drives the cut-off baffle 32 to open and close in the up and down direction, the flat plate 33 arranged on the lower surface inside the valve body 1 can be opened and closed more tightly by matching with the flat plate 33, and the bottom sealing strip 5 is also arranged on the drop surface connecting the high-level pipe 9 and the low-level pipe 10, so that, be equipped with two sealing strips 7 on the upper portion of installation cavity, and fixed connection is at the internal surface on installation cavity upper portion respectively, and upper portion sealing strip 7 can prevent effectively that the liquid of circulation from upwards flowing in the pipeline when the valve is opened, causes the corruption of liquid to lifting gear 24 and lifting rack 31, and the upper end that takes place valve body 1 that the setting up of upper portion sealing strip 7 can avoid the corruption condition is equipped with end cover 8 for daily maintenance and detection convenience more.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a split type sword type gate valve which characterized in that: the method comprises the following steps: the valve comprises a valve body (1), wherein the upper end of the valve body (1) is provided with an installation cavity communicated with the inside, the top of the installation cavity is provided with an end cover (8), the installation cavity is provided with a closure unit (3), and the upper part of the valve body (1) is provided with a lifting unit (2);

the lifting unit (2) comprises a rotating wheel (21), rolling bearings (22), an installation shaft (23), a lifting gear (24) and a hand-operated wheel (25), the rolling bearings (22) are fixedly sleeved at two ends of the installation shaft (23) respectively, the rolling bearings (22) penetrate through and are rotatably connected into two side walls at the upper end of the valve body (1), the lifting gear (24) is fixedly connected to the middle of the installation shaft (23), one end of the installation shaft (23) penetrates through one of the rolling bearings (22) and is fixedly connected with the rotating wheel (21), and the hand-operated wheel (25) is rotatably connected to a rotating plane of the rotating wheel (21);

unit (3) dams, unit (3) dams contains lifting rack (31), baffle (32) and flat board (33) dams, lifting rack (31) are connected with lifting gear (24) meshing, the lower extreme fixedly connected with baffle (32) dams of lifting rack (31), baffle (32) sliding connection dams in the vertical spout in valve body (1), the middle part of end cover (8) is passed and with end cover (8) sliding connection in the upper end of lifting gear (24), flat board (33) fixed connection is at the inside lower surface of valve body (1), and the upper surface of this flat board (33) corresponds the setting with the lower surface of baffle (32) dams.

2. The split knife gate valve of claim 1, wherein: still include low order pipe (10) and high order pipe (9), low order pipe (10) and high order pipe (9) all are located the both ends port of valve body (1), and low order pipe (10) and high order pipe (9) communicate with each other and connect, the lower surface of high order pipe (9) inboard is higher than the lower surface of low order pipe (10) inboard.

3. The split knife gate valve of claim 1, wherein: the sealing device is characterized by further comprising two sealing rubber rings (4), wherein the two sealing rubber rings (4) are arranged on the end faces of the high-position pipe (9) and the low-position pipe (10) respectively.

4. The split knife gate valve of claim 1, wherein: the screw holes (6) are distributed in an annular array and penetrate through the end faces of two ends of the high-position pipe (9) and the low-position pipe (10) respectively.

5. The split knife gate valve of claim 1, wherein: still include bottom sealing strip (5) and upper portion sealing strip (7), bottom sealing strip (5) are equipped with one, and fixed connection is in the drop face department that high-order pipe (9) and low level pipe (10) are connected, upper portion sealing strip (7) are equipped with two, and fixed connection is at the internal surface on installation cavity upper portion respectively.