CN110145612B - Plug valve with split type plug core structure - Google Patents

Plug valve with split type plug core structure Download PDF

Info

Publication number
CN110145612B
CN110145612B CN201910509289.2A CN201910509289A CN110145612B CN 110145612 B CN110145612 B CN 110145612B CN 201910509289 A CN201910509289 A CN 201910509289A CN 110145612 B CN110145612 B CN 110145612B
Authority
CN
China
Prior art keywords
valve body
plug
plug core
valve
core
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910509289.2A
Other languages
Chinese (zh)
Other versions
CN110145612A (en
Inventor
严涛
丁超
果春焕
史可任
王金鹤
郁勇
李伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Sny Valve Co ltd
Original Assignee
Jiangsu Sny Valve Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Sny Valve Co ltd filed Critical Jiangsu Sny Valve Co ltd
Priority to CN202010351596.5A priority Critical patent/CN111520483B/en
Priority to CN201910509289.2A priority patent/CN110145612B/en
Publication of CN110145612A publication Critical patent/CN110145612A/en
Application granted granted Critical
Publication of CN110145612B publication Critical patent/CN110145612B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/222—Shaping of the valve member
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/04—Plug, tap, or cock filters filtering elements mounted in or on a faucet
    • B01D35/046—Plug, tap, or cock filters filtering elements mounted in or on a faucet the filtering element being mounted in the faucet plug
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/224—Details of bearings for the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226—Shaping or arrangements of the sealing
    • F16K1/2268—Sealing means for the axis of rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/02—Construction of housing; Use of materials therefor of lift valves
    • F16K27/0209—Check valves or pivoted valves
    • F16K27/0218—Butterfly valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/44—Mechanical actuating means
    • F16K31/60—Handles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
    • F17D1/17—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by mixing with another liquid, i.e. diluting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/08—Pipe-line systems for liquids or viscous products
    • F17D1/16—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity
    • F17D1/18—Facilitating the conveyance of liquids or effecting the conveyance of viscous products by modification of their viscosity by heating

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Details Of Valves (AREA)

Abstract

The invention discloses a plug valve with a split plug core structure, which comprises a valve body and a plug core arranged in the valve body, wherein the plug core comprises an upper plug core and a lower plug core; the end face of the upper plug core, which is contacted with the valve body channel, is provided with a rotating plate slot, and the rotating plate slot penetrates and is distributed along the diameter of the end face of the upper plug core; the end face of the lower plug core, which is contacted with the valve body channel, is provided with a rotary closing straight plate, and the rotary closing straight plate is inserted into the rotary plate slot. Replace traditional whole case for split type structure to through the straight board of turning off on the lower core realize opening and closing of valve body, when the plug valve leads to wearing and tearing serious and when inefficacy because of long-time the use, needn't change whole plug valve, only need through the end cover of valve body bottom will turn off the straight board and more change and fall and can use as the plug valve that trades newly, prolonged the life of plug valve greatly, improve the performance of plug valve, reduce the production and maintenance cost.

Description

Plug valve with split type plug core structure
Technical Field
The invention relates to a valve, in particular to a plug valve with a split plug core structure.
Background
The plug valve is a rotary valve in the shape of a closing member or a plunger, and is opened or closed by rotating 90 degrees to make a passage port on the plug communicate with or separate from a passage port on the valve body. The plug valve is a fast-switching straight-through valve, which uses a plug body with a through hole in the middle as a valve of a starting and closing piece, and the plug body rotates along with a valve rod to realize the starting and closing actions.
The plug valve is mainly sealed by means of direct contact between a metal plug body subjected to finish machining and an inner cavity of a valve body, the plug valve is extremely easy to wear, and the plug body cannot be effectively sealed with a complex inner cavity after being worn, so that the whole plug valve is out of work and cannot be used. The service life of the plug valve is shortened, and the production and maintenance cost is increased.
Disclosure of Invention
The invention aims to solve the problems and provides a plug valve with a split plug core structure, wherein the plug core is arranged into the split structure, and when the sealing performance of the plug valve is reduced, the worn part can be directly replaced for continuous use.
In order to achieve the purpose, the method adopted by the invention is as follows: a plug valve with a split plug core structure comprises a valve body and a plug core arranged in the valve body, wherein the plug core comprises an upper plug core and a lower plug core; the end face of the upper plug core, which is contacted with the valve body channel, is provided with a rotating plate slot, and the rotating plate slot penetrates and is distributed along the diameter of the end face of the upper plug core; the end face of the lower plug core, which is contacted with the valve body channel, is provided with a rotary closing straight plate, and the rotary closing straight plate is inserted into the rotary plate slot.
As an improvement of the invention, the upper plug core and the lower plug core are both cylindrical, and the distance between the upper plug core and the lower plug core is equal to the diameter of the channel in the valve body.
As an improvement of the invention, the section of the rotary plate slot is in an isosceles trapezoid shape, and the width of the slot opening of the rotary plate slot is larger than that of the inner slot.
As an improvement of the invention, opposite clamping plates are arranged on the end surface of the upper plug core, which is in contact with the valve body channel, and positioned on two sides of the rotating plate slot, and the distance between the clamping plates is equal to the thickness of the rotating closing straight plate.
As an improvement of the invention, the end surface of the upper plug core, which is contacted with the valve body channel, is also provided with a square slot for inserting and connecting a filter plate arranged on the lower plug core, and the square slot penetrates through the diameter of the end surface of the upper plug core and is vertical to the rotary plate slot.
As an improvement of the invention, the filter plate is fixedly connected on the end surface of the lower plug core contacted with the valve body channel, and the filter plate is provided with two identical filter plates which are symmetrically distributed on two sides of the rotary closing straight plate.
As an improvement of the invention, one end of the upper plug core, which is far away from the valve body channel, is provided with a rotary block, and the rotary block is connected with a handle positioned outside the valve body through a first pin shaft.
As an improvement of the invention, one end of the lower plug core, which is far away from the valve body channel, is provided with a positioning block, the positioning block is connected with a bottom cover through a second pin shaft, and the bottom cover is in threaded connection with the valve body.
As an improvement of the invention, sealing rings are sleeved between the upper plug core, the lower plug core and the valve body.
As an improvement of the present invention, an anti-blocking device is disposed at an inlet end of the valve body, and the anti-blocking device includes:
one side of the L-shaped supporting plate is fixedly arranged on the valve body through a screw, and the end surface of the L-shaped supporting plate, which is in contact with the valve body (1), is an arc surface and is tightly attached to the outer wall of the valve body;
the air pump is fixedly arranged on the other side of the L-shaped supporting plate, and an air nozzle seat sleeve is sleeved at an air outlet of the air pump;
the glue blowing nozzle is embedded in the inner cavity of the air nozzle seat sleeve, and a ventilation pipeline for communicating the air outlet of the air pump with the glue blowing nozzle is also arranged in the air nozzle seat sleeve;
one end of the air blowing pipe is hermetically connected with the glue blowing nozzle, and the other end of the air blowing pipe is communicated with the inner cavity of the valve body through a circular through hole formed in the valve body;
the sealing positioning sleeve is sleeved on the air blowing pipe and is arranged in the circular through hole, so that the air blowing pipe is in sealing connection with the valve body;
and the heating connecting pipe is connected with the air blowing pipe in series, and a plurality of annular resistance wires are arranged on the heating connecting pipe.
Has the advantages that:
1. according to the plug valve with the split type plug core structure, the traditional integral valve core is replaced by the split type structure, the opening and closing of the valve body are realized through the spin-on straight plate on the lower plug core, when the plug valve is worn seriously and fails due to long-time use, the whole plug valve does not need to be replaced, the plug valve can be used as a newly replaced plug valve only by replacing the spin-on straight plate through the end cover at the bottom of the valve body, the service life of the plug valve is greatly prolonged, the service performance of the plug valve is improved, and the production and maintenance cost is reduced;
2. in order to ensure the sealing performance between the rotary closing straight plate and the upper plug core, the rotary closing straight plate slot is designed to be of an isosceles trapezoid structure, so that when the rotary closing straight plate is inserted into the rotary closing straight plate slot, the rotary closing straight plate is closer to the slot wall of the slot as the rotary closing straight plate goes upwards, and the sealing performance is better.
3. In order to avoid the deformation of the rotary closing straight plate under the action of overlarge opening and closing force during working and ensure that the rotary closing straight plate does not deform and displace, the upper plug core is provided with clamping plates to be clamped at two sides of the rotary closing straight plate.
Drawings
FIG. 1 is an elevational, cross-sectional view of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic view of an alternate aspect of the plug of the present invention;
FIG. 4 is a schematic structural view of an upper plug core of the present invention;
FIG. 5 is a front view of the upper plug core of the present invention;
FIG. 6 is a bottom view of the upper plug of the present invention;
FIG. 7 is an enlarged schematic view of FIG. 1 at A;
fig. 8 is an enlarged schematic view at B of fig. 1.
The components in the figure are:
1-valve body, 2-upper plug core, 3-lower plug core, 4-rotating plate slot, 5-rotating closing straight plate, 6-clamping plate, 7-filter plate, 8-square slot, 9-rotating block, 10-first pin shaft, 11-handle, 12-positioning block, 13-second pin shaft, 14-bottom cover, 15-sealing ring, 16-L-shaped supporting plate, 17-air pump, 18-air nozzle seat sleeve, 19-glue blowing nozzle, 20-air blowing pipe, 21-round through hole, 22-sealing positioning sleeve and 23-heating connecting pipe.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.
The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.
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 should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The invention provides a plug valve with a split plug core structure, which comprises a valve body 1 and a plug core arranged in the valve body, wherein in the figures 2 and 3, the plug core comprises an upper plug core 2 and a lower plug core 3; the end face of the upper plug core 2, which is contacted with the valve body channel, is provided with a rotating plate slot 4, and the rotating plate slot 4 is distributed along the diameter of the end face of the upper plug core 2 in a penetrating way; the end face of the lower plug core 3, which is contacted with the valve body channel, is provided with a rotary closing straight plate 5, and the rotary closing straight plate 5 is inserted in the rotary plate slot 4.
The traditional plug valve is generally provided with a through hole communicated with a pipeline in the middle of a cylindrical or conical plug, and when the plug valve needs to be opened, a handle is rotated to ensure that the through hole on a plug core is just communicated with the pipeline to form a flow channel; when the plug valve needs to be closed, the plug core is rotated by 90 degrees by rotating the handle, and the fluid medium cannot pass through the plug valve. The conventional plug valve fails when the plug core is worn and cannot form a sealing state with the valve body.
The plug valve provided by the invention divides the plug core into an upper part and a lower part, and a rotary closing straight plate is arranged between the upper part and the lower part; when the plug valve needs to be closed, the handle is rotated to enable the vertical state to be supported between the rotary closing straight plate and the flowing direction of the fluid medium, so that the rotary closing straight plate is tightly attached to the inner wall of the valve body to form a closed space with the valve body, and the fluid medium cannot flow. When the rotary closing straight plate is seriously worn and cannot form effective sealing with the inner wall of the valve body, the plug valve can be continuously used only by replacing the rotary closing straight plate.
In one embodiment of the invention, the upper plug core 2 and the lower plug core 3 are both cylindrical, and the distance between the upper plug core 2 and the lower plug core 3 is equal to the diameter of the channel in the valve body 1. The cylindrical split plug core is simple in structure and good in rotation reliability. In order to ensure that the fluid medium does not have a protruding structure when flowing through the plug core, the distance between the upper plug core 2 and the lower plug core 3 is equal to the diameter of the channel in the valve body 1, so that the whole valve body channel is in a smooth structure.
In one embodiment of the present invention, the cross section of the swing plate insertion slot 4 is in an isosceles trapezoid shape, and the width of the slot opening of the swing plate insertion slot 4 is greater than the width of the inner slot.
When the rotary closing straight plate is inserted into the rotary plate slot, the rotary closing straight plate is closer to the inner slot, and the rotary closing straight plate and the upper valve element can be more hermetically connected due to the existence of the inclined contact surface, so that the phenomenon that fluid media flows out through a gap of the rotary plate slot to cause the failure of the whole plug valve is avoided.
In one embodiment of the invention, opposite clamping plates 6 are further arranged on the end surface of the upper plug core 2, which is in contact with the valve body channel, on two sides of the rotary plate inserting groove 4, and the distance between the clamping plates 6 is the thickness of the rotary closing straight plate 5.
In the opening and closing process of the plug valve, the rotary closing straight plate bears hydraulic pressure from a fluid medium and torque during rotation, and long-time stress can cause the rotary closing straight plate to be bent, deformed or displaced, so that effective sealing cannot be formed between the rotary closing straight plate and a valve body, and therefore opposite clamping plates are arranged on two sides of the rotary closing straight plate to clamp the rotary closing straight plate, and partial pressure borne by the rotary closing straight plate is shared.
In an embodiment of the invention, the end surface of the upper plug core 3 contacting the valve body channel is further provided with a square slot 8 for inserting a filter plate 7 arranged on the lower plug core 3, and the square slot 8 penetrates through the diameter of the end surface of the upper plug core 2 and is perpendicular to the spiral plate slot 4. The filter plate 7 is fixedly connected to the end face of the lower plug core 3 contacting with the valve body channel, and the filter plate 7 is provided with two identical filter plates which are symmetrically distributed on two sides of the rotary closing straight plate 5.
The filter plate is used for filtering the liquid flowing through and preventing impurities in the liquid from blocking the pipeline. The filter plate and the rotary closing straight plate are vertically and fixedly connected to the lower plug core, and the contact part of the filter plate and the rotary closing straight plate has no gap.
In one embodiment of the invention, the end of the upper plug core 2 away from the valve body channel is provided with a rotary block 9, and the rotary block 9 is connected with a handle 11 positioned outside the valve body 1 through a first pin shaft 10.
When the plug valve needs to be opened or closed, the handle is rotated, the handle drives the upper plug core to rotate through the rotating block, and the rotating and closing straight plate inserted on the upper plug core can rotate along with the upper plug core. When the rotary closing straight plate is vertical to the flowing direction of the fluid, a sealing state is formed between the rotary closing straight plate and the inner wall of the valve body, and the plug valve is closed at the moment; when the rotary closing straight plate is parallel to the flowing direction of the fluid, the fluid flows through the space between the two sides of the rotary closing straight plate, and the cock valve is opened.
In one embodiment of the invention, a positioning block 12 is arranged at one end of the lower plug core 3 away from the valve body channel, the positioning block 12 is connected with a bottom cover 14 through a second pin shaft 13, and the bottom cover 14 is in threaded connection with the valve body 1.
When the rotary closing straight plate is seriously abraded and needs to be replaced, the bottom cover is detached from the valve body, the lower plug core is taken out from the valve body, a new lower valve core or a new rotary closing straight plate is replaced, the lower valve core is connected to the bottom cover through the matching of the second pin shaft and the positioning block, and the bottom cover is connected to the valve body in a threaded mode after the corresponding position between the lower valve core and the upper valve core is well positioned, so that the process is completed.
In one embodiment of the invention, in order to further ensure the sealing performance of the valve body, sealing rings 15 are sleeved between the upper plug core 2, the lower plug core 3 and the valve body 1.
In one embodiment of the present invention, an anti-blocking device is disposed at one end of the valve body 1 where water enters, and the anti-blocking device includes:
one side of the L-shaped supporting plate 16 is fixedly arranged on the valve body 1 through a screw, and the end surface of the L-shaped supporting plate 16, which is contacted with the valve body 1, is an arc surface and is tightly attached to the outer wall of the valve body 1;
the air pump 17 is fixedly arranged on the other side of the L-shaped supporting plate 16, and an air nozzle seat sleeve 18 is sleeved at an air outlet of the air pump 17;
the glue blowing nozzle 19 is embedded in the inner cavity of the air nozzle seat sleeve 18, and a ventilation pipeline for communicating the air outlet of the air pump 17 with the glue blowing nozzle 19 is further arranged inside the air nozzle seat sleeve 18;
one end of the air blowing pipe 20 is hermetically connected with the glue blowing nozzle 19, and the other end of the air blowing pipe is communicated with the inner cavity of the valve body 1 through a circular through hole 21 formed in the valve body 1;
the sealing positioning sleeve 22 is sleeved on the air blowing pipe 20 and is arranged in the circular through hole 21, so that the air blowing pipe 20 is connected with the valve body 1 in a sealing manner;
and the heating connecting pipe 23 is connected with the air blowing pipe 20 in series, and a plurality of annular resistance wires are arranged on the heating connecting pipe 23.
The plug valve mainly is the valve of opening and close in the liquid pipeline in the pipeline, if the liquid viscosity in the transmission pipeline is than higher, because the structural component in the plug valve is comparatively complicated: the split valve core, the gap between the upper valve core and the valve body and the gap between the lower valve core and the valve body, the blockage of the spin-off straight plate and the filter plate and the like can cause the liquid to flow in the plug valve unsmoothly or even block. The anti-blocking device is mainly characterized in that a proper amount of high-temperature gas is filled into one end of the valve body, and the high-temperature gas is filled before liquid enters the center of the plug valve, so that the throughput of the liquid flowing through the plug valve in unit time can be reduced by the gas, and the total flow rate of the plug valve in unit time is fixed, and one part of the total flow rate is the gas, so the throughput of the liquid in unit time is correspondingly reduced; in addition, the pressure in the pipeline at the water inlet end of the valve body can be far higher than that at the water outlet end of the valve body all the time by filling gas, so that the liquid can be ensured to pass through the plug valve more smoothly by improving the pressure difference; and the heat of the high-temperature gas can improve the solubility of substances in the liquid and can slowly release the solution concentration of the liquid to a certain degree. An air outlet valve can be arranged on a pipeline at the downstream of the plug valve to discharge air filled by the air pump, so that the liquid quality of the liquid outlet is improved.
This embodiment can ensure that the plug valve is used in the liquid transmission of high viscosity also can be smoothly unobstructed the circulation, avoids the plug valve to take place blocking phenomenon in the use, ensures whole flow pipeline's normal, steady operation, improves the operating efficiency.
According to the plug valve with the split type plug core structure, the traditional integral valve core is replaced by the split type structure, the opening and closing of the valve body are realized through the rotary closing straight plate on the lower plug core, when the plug valve is worn seriously and fails due to long-time use, the whole plug valve does not need to be replaced, the rotary closing straight plate is replaced through the end cover at the bottom of the valve body, the plug valve can be used as a newly replaced plug valve, the service life of the plug valve is greatly prolonged, the service performance of the plug valve is improved, and the production and maintenance cost is reduced.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, but any modifications or equivalent variations made according to the technical spirit of the present invention are within the scope of the present invention as claimed.

Claims (9)

1. The utility model provides a plug valve with split type stopper core structure, includes valve body (1) and sets up the stopper core in the valve body, its characterized in that:
the plug core comprises an upper plug core (2) and a lower plug core (3);
the end face of the upper plug core (2) contacting with the valve body channel is provided with a rotating plate slot (4), and the rotating plate slot (4) penetrates through the end face of the upper plug core (2) along the diameter;
the end face of the lower plug core (3) contacting with the valve body channel is provided with a rotary closing straight plate (5), and the rotary closing straight plate (5) is inserted into the rotary plate slot (4);
the plug is characterized in that the end face of the upper plug core (2) contacting with the valve body channel is provided with opposite clamping plates (6) on two sides of the rotary plate slot (4), and the distance between the clamping plates (6) is equal to the thickness of the rotary closing straight plate (5).
2. The plug valve with the split plug core structure according to claim 1, wherein: the upper plug core (2) and the lower plug core (3) are both cylindrical, and the distance between the upper plug core (2) and the lower plug core (3) is equal to the diameter of a channel in the valve body (1).
3. The plug valve with the split plug core structure according to claim 1, wherein: the cross section of the rotary plate slot (4) is in an isosceles trapezoid shape, and the width of the notch of the rotary plate slot (4) is larger than that of the inner groove.
4. The plug valve with the split plug core structure according to claim 1, wherein: the end face, contacted with the valve body channel, of the upper plug core (2) is also provided with a square slot (8) for inserting a filter plate (7) arranged on the lower plug core (3), and the square slot (8) penetrates through the end face diameter of the upper plug core (2) and is distributed and perpendicular to the rotary plate slots (4).
5. The plug valve with the split plug core structure according to claim 4, wherein: the filter plate (7) is fixedly connected to the end face of the lower plug core (3) contacted with the valve body channel, and the filter plate (7) is provided with two identical pieces which are symmetrically distributed on two sides of the rotary closing straight plate (5).
6. The plug valve with the split plug core structure according to claim 1, wherein: go up stopper core (2) and keep away from the one end of valve body passageway and be provided with and revolve piece (9), revolve piece (9) and be connected with handle (11) that are located valve body (1) outside through first round pin axle (10).
7. The plug valve with the split plug core structure according to claim 1, wherein: one end, far away from the valve body channel, of the lower plug core (3) is provided with a positioning block (12), the positioning block (12) is connected with a bottom cover (14) through a second pin shaft (13), and the bottom cover (14) is in threaded connection with the valve body (1).
8. The plug valve with the split plug core structure according to claim 6, wherein:
and a sealing ring (15) is sleeved between the upper plug core (2), the lower plug core (3) and the valve body (1).
9. The plug valve with the split plug core structure according to claim 4, wherein:
the one end of intaking of valve body (1) is provided with prevents stifled device, prevent stifled device and include:
the valve body (1) is fixedly arranged on the valve body (1) through a screw, and the end face of the L-shaped supporting plate (16), which is in contact with the valve body (1), is an arc surface and is tightly attached to the outer wall of the valve body (1);
the air pump (17) is fixedly arranged on the other side of the L-shaped supporting plate (16), and an air nozzle seat sleeve (18) is sleeved at an air outlet of the air pump (17);
the glue blowing nozzle (19) is embedded in the inner cavity of the air nozzle seat sleeve (18), and a ventilation pipeline for communicating the air outlet of the air pump (17) with the glue blowing nozzle (19) is further arranged inside the air nozzle seat sleeve (18);
one end of the air blowing pipe (20) is hermetically connected with the glue blowing nozzle (19), and the other end of the air blowing pipe is communicated with the inner cavity of the valve body (1) through a circular through hole (21) formed in the valve body (1);
the sealing positioning sleeve (22) is sleeved on the air blowing pipe (20) and is arranged in the circular through hole (21), so that the air blowing pipe (20) is in sealing connection with the valve body (1);
the heating connecting pipe (23) is connected with the air blowing pipe (20) in series, and a plurality of annular resistance wires are arranged on the heating connecting pipe (23).
CN201910509289.2A 2019-06-13 2019-06-13 Plug valve with split type plug core structure Active CN110145612B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202010351596.5A CN111520483B (en) 2019-06-13 2019-06-13 Plug valve with split type plug core structure
CN201910509289.2A CN110145612B (en) 2019-06-13 2019-06-13 Plug valve with split type plug core structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910509289.2A CN110145612B (en) 2019-06-13 2019-06-13 Plug valve with split type plug core structure

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CN202010351596.5A Division CN111520483B (en) 2019-06-13 2019-06-13 Plug valve with split type plug core structure

Publications (2)

Publication Number Publication Date
CN110145612A CN110145612A (en) 2019-08-20
CN110145612B true CN110145612B (en) 2020-06-02

Family

ID=67591136

Family Applications (2)

Application Number Title Priority Date Filing Date
CN202010351596.5A Active CN111520483B (en) 2019-06-13 2019-06-13 Plug valve with split type plug core structure
CN201910509289.2A Active CN110145612B (en) 2019-06-13 2019-06-13 Plug valve with split type plug core structure

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CN202010351596.5A Active CN111520483B (en) 2019-06-13 2019-06-13 Plug valve with split type plug core structure

Country Status (1)

Country Link
CN (2) CN111520483B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111006061A (en) * 2019-12-31 2020-04-14 江苏高中压阀门有限公司 Bypass quick-opening valve for water pipe
CN112032318B (en) * 2020-07-17 2022-04-22 良工阀门集团有限公司 Fluorine-lined butterfly valve

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3341170A (en) * 1964-03-25 1967-09-12 Fmc Corp Valve
US4056474A (en) * 1976-04-19 1977-11-01 Snouffer William N Straining valves
US4722794A (en) * 1985-04-05 1988-02-02 Remco Research And Development, Inc. Straining and stop valve
FR2642498B1 (en) * 1989-01-31 1991-05-10 Solex METHOD OF MOUNTING THREADED BUTTERFLY ON A SLOTTED AXIS
AU736833B3 (en) * 2001-03-30 2001-08-02 Charles Frederick Thomas Shuter Valve locking device
CN203023515U (en) * 2012-12-26 2013-06-26 浙江工贸职业技术学院 Split-type butterfly valve
CN203656248U (en) * 2014-01-08 2014-06-18 长春工程学院 Ball valve with filtering function
CN104930202A (en) * 2014-03-18 2015-09-23 天津市精沃阀门科技有限公司 Novel cross-shaped butterfly valve
US11131404B2 (en) * 2015-11-16 2021-09-28 Hayward Industries, Inc. Ball valve
EA201990485A1 (en) * 2016-10-12 2019-10-31 ROTARY VALVE DEVICE AND LIFT LIFTING DEVICE CONTAINING A ROTARY VALVE DEVICE
CN207261679U (en) * 2017-09-05 2018-04-20 世通金属制品（天津）股份有限公司 A kind of high stability butterfly valve
CN207500526U (en) * 2017-10-24 2018-06-15 梁建强 A kind of HVAC control valve
CN207814456U (en) * 2017-12-05 2018-09-04 上海埃维玛阀门有限公司 The multistage filtering butterfly valve of changeable type
CN207929699U (en) * 2017-12-29 2018-10-02 广东骏驰科技股份有限公司 A kind of device using high-pressure rotary airflow cleans automobile pipe-shaped parts
CN208089956U (en) * 2018-02-05 2018-11-13 瑞安市南星机械有限公司 It is a kind of can self-locking sealed butterfly valve
CN208535211U (en) * 2018-03-20 2019-02-22 瑞安市南星机械有限公司 Ductile cast iron valve
CN108515316A (en) * 2018-03-21 2018-09-11 天津市塘沽天顺阀门实业有限公司 A kind of penstock and its processing technology of separate structure
CN108386568B (en) * 2018-04-12 2019-02-22 江苏圣泰阀门有限公司 Superhigh temperature plug valve
CN208381365U (en) * 2018-07-02 2019-01-15 台州和洛宝铜业有限公司 A kind of ball valve
CN109163114A (en) * 2018-11-13 2019-01-08 雷纳德流体智能科技江苏股份有限公司 A kind of medium-sized ball valve
CN109488780B (en) * 2019-01-01 2023-11-07 广州市昊封流体工程技术有限公司 Abrasion-free anti-erosion clutch valve

Also Published As

Publication number Publication date
CN111520483B (en) 2021-09-17
CN110145612A (en) 2019-08-20
CN111520483A (en) 2020-08-11

Similar Documents

Publication Publication Date Title
CN110145612B (en) Plug valve with split type plug core structure
CN105080191A (en) Filter element device and filter element seat
WO2021023006A1 (en) Water segregator
CN111115869A (en) Composite filter element assembly
CN112161081A (en) Anti-scouring ball valve
CN104895842A (en) Spiral flow constant pressure pump
CN112197034A (en) One-way throttle valve
CN214946536U (en) Ultra-low temperature ball valve
CN201934705U (en) High-pressure shutoff/blowoff ball core valve
CN213808979U (en) Integrated intelligent electric valve
CN213088801U (en) Novel ball valve with filtering mechanism
CN206637082U (en) The single-seat adjusting valve of high reliability
CN113606367A (en) Integrated form check valves
CN210566607U (en) Fixed forged steel ball valve capable of preventing mistaken opening
CN110274029B (en) Control valve for adding refrigerant
CN209781768U (en) Multifunctional check valve for oil extraction
CN206439451U (en) A kind of horizontal check valve
CN213776405U (en) Cavitation-resistant noise-reducing butterfly valve
CN218000463U (en) Ceramic adjusting ball valve
CN211315248U (en) Energy-saving silencing check ball valve
CN205170411U (en) Filter core and filter core device
CN116006738A (en) Multifunctional gate valve
CN215568225U (en) Proportional pressure reducing valve
CN210623751U (en) Ball valve handle
CN214889024U (en) Ball valve with impurity filtering function

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant