CN113137490A - Automatic gate type material sealing valve for magnetic material slurry - Google Patents

Automatic gate type material sealing valve for magnetic material slurry Download PDF

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Publication number
CN113137490A
CN113137490A CN202110570701.9A CN202110570701A CN113137490A CN 113137490 A CN113137490 A CN 113137490A CN 202110570701 A CN202110570701 A CN 202110570701A CN 113137490 A CN113137490 A CN 113137490A
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China
Prior art keywords
valve
valve plate
static
plate
gate type
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Pending
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CN202110570701.9A
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Chinese (zh)
Inventor
罗晓峰
汪城
王国华
杨俊�
王文杰
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Maanshan Qili Electromechanical Equipment Co ltd
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Maanshan Qili Electromechanical Equipment Co ltd
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Priority to CN202110570701.9A priority Critical patent/CN113137490A/en
Publication of CN113137490A publication Critical patent/CN113137490A/en
Pending legal-status Critical Current

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    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0254—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor being operated by particular means
    • 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
    • F16K27/04—Construction of housing; Use of materials therefor of sliding valves
    • F16K27/044—Construction of housing; Use of materials therefor of sliding valves slide valves with flat obturating members
    • 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
    • F16K27/08—Guiding yokes for spindles; Means for closing housings; Dust caps, e.g. for tyre 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0263—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor using particular material or covering means
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
    • F16K3/0272—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor permitting easy assembly or disassembly
    • 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
    • F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
    • F16K3/30—Details
    • F16K3/314—Forms or constructions of slides; Attachment of the slide to the spindle
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
    • F16K31/1225—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston with a plurality of pistons
    • 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
    • F16K35/00—Means to prevent accidental or unauthorised actuation
    • F16K35/06—Means to prevent accidental or unauthorised actuation using a removable actuating or locking member, e.g. a key

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Valves (AREA)
  • Sliding Valves (AREA)

Abstract

The invention discloses an automatic gate type material sealing valve for magnetic material slurry, and belongs to the field of material sealing valves. The valve comprises a main valve body, wherein the main valve body comprises a shell and a valve core; the valve core comprises a first static valve plate, a second static valve plate and a dynamic valve plate which are parallel to each other, the dynamic valve plate is positioned between the first static valve plate and the second static valve plate, and the surfaces of the two sides of the dynamic valve plate are tightly attached to the first static valve plate and the second static valve plate respectively to form plane sealing; the shell is provided with a valve cavity penetrating through two ends, the valve core is arranged in the valve cavity, and the first static valve plate and the second static valve plate are respectively embedded and fixed on the inner wall of the valve cavity; the main valve body is provided with a material injection channel which penetrates through the shell, the first static valve plate, the second static valve plate and the dynamic valve plate, and the material injection channel is vertically intersected with the valve cavity; two ends of the main valve body are provided with valve core driving devices used for pushing the movable valve plates in opposite directions. The automatic gate type material sealing valve has the advantages of lasting good sealing effect, long service life, low damage frequency and low maintenance cost.

Description

Automatic gate type material sealing valve for magnetic material slurry
Technical Field
The invention relates to the field of material sealing valves, in particular to an automatic gate type material sealing valve for magnetic material slurry.
Background
In the forming process of ferrite magnetic material finished product production, normally, ferrite slurry with a certain concentration is injected into a die cavity of a forming die for hydraulic dehydration forming, in order to ensure good quality of the product after forming, the material injection pressure during material injection is generally up to 2-5 Mpa and even higher, so that the material injection quantity deviation can be reduced, and the consistency of the density and the weight of a finished product is higher. Therefore, in order to avoid the backflow of the ferrite slurry in the compression process, a sealing valve is required to be used for sealing the feeding hole of the die.
The existing full-automatic ferrite grouting mould generally adopts a steel ball check valve, a hydraulic check valve or an angle valve and the like to realize the processes of material injection and material sealing, and the material sealing valve can not solve the leakage problem in a high-pressure state because the reverse back pressure of high-pressure slurry in the hydraulic forming process can not be resisted although the leakage condition is improved in the product forming process, so that the material leakage is easy to occur under the high-pressure action, the damage is easy to occur, and the maintenance frequency of the mould is further increased.
In order to solve the problems, the company previously designs a hydraulic die sealing valve (No. CN210566579U, No. 2020.05.19), which comprises a hydraulic oil cylinder and a valve body, wherein the hydraulic oil cylinder is fixed at one end of the valve body, a valve cavity is arranged in the valve body, a piston rod of the hydraulic oil cylinder is axially inserted into the valve cavity to form a movable valve core, a feed port and a discharge port which are radially communicated into the valve cavity are arranged on the valve body, the discharge port is positioned at one end of the valve body close to the hydraulic oil cylinder, and the feed port is positioned at one end of the valve body far away from the hydraulic oil cylinder; a sealing ring is arranged in the valve cavity between the feeding hole and the discharging hole, a sealing piston is arranged at the end part of the piston rod, and the sealing piston and the sealing ring can be extruded mutually to form sealing by pushing the piston rod. The hydraulic die sealing valve can obtain better sealing effect by solving the problem of reverse back pressure; however, in the using process, the hard ferrite particles in the magnetic slurry can be clamped on the contact surface between the sealing piston and the sealing ring, and under the action of high pressure, the hard ferrite particles can damage the contact surface between the sealing piston and the sealing ring to generate small gaps, so that the sealing piston and the sealing ring are badly sealed and have material leakage after long-term use, and therefore the sealing piston and the sealing ring need to be replaced after a period of use, so that not only is the maintenance cost high, but also the production efficiency is influenced.
Disclosure of Invention
Technical problem to be solved by the invention
Aiming at the problems in the prior art, the invention provides the automatic gate type sealing valve for the magnetic material slurry, which can completely eliminate the influence of the reverse back pressure of the high-pressure slurry in the hydraulic forming process on the sealing effect of the valve core, can avoid the ferrite gas particles in the slurry from damaging the sealing surface of the valve core, has a lasting good sealing effect, and is long in service life, low in damage frequency and maintenance cost.
Technical scheme
In order to solve the problems, the technical scheme provided by the invention is as follows:
an automatic gate type material sealing valve for magnetic material slurry comprises a main valve body, wherein the main valve body comprises a shell and a valve core; the valve core comprises a first static valve plate, a second static valve plate and a dynamic valve plate which are parallel to each other, the dynamic valve plate is positioned between the first static valve plate and the second static valve plate, and the surfaces of the two sides of the dynamic valve plate are respectively tightly attached to the first static valve plate and the second static valve plate to form plane sealing; the shell is provided with a valve cavity penetrating through two ends, the valve core is arranged in the valve cavity, and the first static valve sheet and the second static valve sheet are respectively embedded and fixed on the inner wall of the valve cavity; the main valve body is provided with a material injection channel which penetrates through the shell, the first static valve plate, the second static valve plate and the dynamic valve plate, and the material injection channel is vertically intersected with the valve cavity; and valve core driving devices for pushing the movable valve plates in opposite directions are arranged at two ends of the main valve body.
Furthermore, the first static valve plate, the dynamic valve plate and the second static valve plate are all made of hard alloy, the hardness is more than HRC89, and the hardness of the first static valve plate and the second static valve plate is higher than that of the dynamic valve plate;
the surface roughness Ra of the contact surfaces among the first static valve plate, the movable valve plate and the second static valve plate is 1.6-0.8 mu m.
Further, the casing includes main casing body and casing gland, main casing body one side is seted up flutedly, casing gland demountable installation is in the recess.
Further, the first static valve plate is fixed on the main shell, and the second static valve plate is fixed on the shell pressure cover.
Further, the shell gland and the main shell are connected through fastening bolts.
Furthermore, a limiting bolt is arranged on the shell pressing cover and penetrates through the shell pressing cover to tightly abut against the bottom of the groove.
And furthermore, observation holes for observing whether leakage occurs are formed in the side faces close to the two ends of the shell, and the observation holes are communicated into the valve cavity along the radial direction of the shell.
Furthermore, a plurality of observation holes are arranged at two ends of the shell and distributed around the axis of the valve cavity.
Further, the valve core driving device is a hydraulic oil cylinder and is provided with a piston push rod axially extending into the valve cavity.
Furthermore, the piston push rod comprises a front section push rod and a rear section push rod, the outer diameter of the front section push rod is smaller than the distance between the first static valve plate and the second static valve plate, and the outer diameter of the rear section push rod is matched with the inner diameter of the valve cavity.
Advantageous effects
(1) According to the automatic gate type material sealing valve for the magnetic material slurry, the three valve plates of the valve core are in gate type matching, and plane contact sealing is adopted between every two valve plates, so that the influence of reverse back pressure of high-pressure slurry on the sealing effect of the valve core in the hydraulic forming process can be completely eliminated, and ferrite gas particles in the slurry before and after material injection are difficult to enter the sealing surfaces between the three valve plates, so that the sealing surface of the valve core cannot be damaged; therefore, the durable good sealing effect can be kept, the service life is greatly prolonged, the damage frequency and the maintenance cost are reduced, and the production efficiency is improved;
(2) according to the automatic gate type sealing valve for the magnetic material slurry, the two static valve plates are more difficult to wear compared with the dynamic valve plates, and can be reused only by replacing the dynamic valve plates after long-term use, so that the maintenance cost and the maintenance efficiency are reduced;
(3) according to the automatic gate type sealing valve for the magnetic material slurry, the surface roughness Ra of the contact surface among the first static valve plate, the movable valve plate and the second static valve plate is selected, the processing cost and the sealing performance are comprehensively considered, the good sealing effect can be ensured, and meanwhile, the sliding resistance of the movable valve plate is relatively small;
(4) according to the automatic gate type sealing valve for the magnetic material slurry, the sealing pressure between the movable valve plate and the static valve plate can be adjusted by changing the assembling tightness of the shell gland, the replacing frequency of the movable valve plate can be greatly reduced, and the service life is prolonged exponentially;
(5) according to the automatic gate type sealing valve for the magnetic material slurry, after the proper sealing pressure is obtained between the movable valve plate and the static valve plate by rotating the fastening bolt, the shell gland can be locked by screwing the limiting bolt, so that the phenomenon that the reverse back pressure of the slurry on the two static valve plates when the valve core is closed causes the looseness between the shell gland and the main shell to cause material leakage is avoided, and meanwhile, the phenomenon that the sealing failure of the valve core is caused by the looseness of the fastening bolt due to vibration or misoperation of personnel in the use process is avoided;
(6) according to the automatic gate type material sealing valve for the magnetic material slurry, disclosed by the invention, on the basis of adopting gate type valve plate sealing, the shell is provided with the observation hole for observing whether the valve core leaks, so that slight material leakage faults can be found in time, and serious consequences are avoided.
Drawings
FIG. 1 is a schematic view of the internal structure of the automatic gate type material sealing valve of the present invention;
FIG. 2 is a front view of the automatic gate-type sealing valve of the present invention;
FIG. 3 is a top view of the automatic gate-type sealing valve of the present invention;
in the drawings: 1. a main valve body; 100. a material injection channel; 101. a valve cavity; 11. a main housing; 111. an observation hole; 112. a groove; 12. a housing gland; 13. a valve core; 131. a first static valve plate; 132. a second static valve plate; 133. a movable valve plate; 14. fastening a bolt; 15. a limit bolt;
2. a valve element drive device; 200. a piston push rod; 201. a front section push rod; 202. a rear section push rod.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
Examples
Referring to fig. 1 to 3, in this embodiment, an automatic gate type material sealing valve for magnetic material slurry is provided, which includes a main valve body 1, where the main valve body 1 includes a housing and a valve core 13, the valve core 13 includes a first static valve plate 131, a second static valve plate 132, and a dynamic valve plate 133 that are parallel to each other, the dynamic valve plate 133 is located between the first static valve plate 131 and the second static valve plate 132, and two side surfaces of the dynamic valve plate 133 are respectively tightly attached to the first static valve plate 131 and the second static valve plate 132 to form a plane seal; the shell is provided with a valve cavity 101 penetrating through two ends, the valve core 13 is arranged in the valve cavity 101, and the first static valve plate 131 and the second static valve plate 132 are respectively embedded and fixed on the inner wall of the valve cavity 101; the main valve body 1 is provided with an injection channel 100 which penetrates through the shell, the first static valve plate 131, the second static valve plate 132 and the dynamic valve plate 133, and the injection channel 100 is vertically intersected with the valve cavity 101. Valve core driving devices 2 used for oppositely pushing the movable valve plates 133 are arranged at two ends of the main valve body 1, one of the two valve core driving devices 2 drives the movable valve plates 133 to perform dislocation motion relative to the two static valve plates, so that hole positions of the material injection channels 100 on the movable valve plates and the static valve plates are staggered, and valve closing is realized; when the valve needs to be opened, the other valve core driving device 2 drives the movable valve sheet 133 to reset, so that the material injection channel 100 is communicated.
Above-mentioned automatic floodgate formula material sealing valve, because adopt floodgate formula cooperation between three valve blocks of case 13, and be plane contact sealed between two liang, not only can eliminate the reverse backpressure of the high pressure ground paste in the hydroforming process completely to the influence of the sealed effect of case 13 to in the ferrite gas granule in the ground paste all is difficult to get into the sealing surface between three valve blocks around annotating the material, and then can't produce the destruction to the sealed face of case 13. Therefore, the sealing device can keep a good lasting sealing effect, greatly prolongs the service life, reduces the damage frequency and the maintenance cost, and improves the production efficiency.
In this embodiment, the first static valve plate 131, the dynamic valve plate 133 and the second static valve plate 132 are made of cemented carbide, and the hardness requirements are all above HRC89, so that the wear of ferrite particles can be resisted. Moreover, the hardness of the first and second static valve plates 131 and 132 is higher than that of the dynamic valve plate 133, so that the two static valve plates are more difficult to wear compared with the dynamic valve plate, and can be put into use again only by replacing the dynamic valve plate after long-term use, thereby reducing the maintenance cost and the maintenance efficiency. It should be noted here that, in the case where maintenance cost and maintenance efficiency are not considered, the three valve plates may be made of cemented carbide having the same hardness, and the worn or damaged three valve plates may be repaired or replaced together. The surface roughness Ra of the contact surface among the first static valve plate 131, the movable valve plate 133 and the second static valve plate 132 is preferably 1.6-0.8 mu m, so that a good sealing effect can be ensured, and the sliding resistance of the movable valve plate 133 is relatively small. Theoretically, the smaller the surface roughness Ra of the contact surface between the first static valve plate 131, the dynamic valve plate 133 and the second static valve plate 132, the better, but the research of the inventor finds that under the working pressure, when the surface roughness Ra is smaller than 0.8 μm, the surface roughness Ra is reduced, the sealing effect between the valve plates is not obviously improved, but the processing difficulty of the valve plates is greatly increased, so that the processing cost and the sealing performance are comprehensively considered, and the roughness range is preferably used as the processing standard of the processed valve plates in the scheme.
In this embodiment, the housing includes a main housing 11 and a housing cover 12, a groove 112 is formed on one side of the main housing 11, and the housing cover 12 is detachably mounted in the groove 112. The first static valve piece 131 is fixed on the main casing 11, and the second static valve piece 132 is fixed on the casing gland 12. Specifically, the housing cover 12 and the main housing 11 are connected by fastening bolts 14, and in this embodiment, the number of the fastening bolts 14 is four, and the four fastening bolts are symmetrically distributed on two sides of the housing cover 12 in a rectangular shape.
The shell with the structure is more convenient for assembling, disassembling and replacing the valve core 13, and when the movable valve sheet 133 needs to be maintained or replaced and repaired after long-term use, the shell gland 12 is directly disassembled to take out the movable valve sheet 133, so that the operation is very convenient; meanwhile, the sealing pressure between the movable valve plate and the static valve plate can be adjusted by changing the assembling tightness of the shell gland 12, namely, after the movable valve plate 133 is abraded to cause poor sealing, the fastening bolt 14 can be appropriately screwed, so that the sealing pressure between the movable valve plate and the static valve plate is increased, the good sealing effect is recovered, the replacement frequency of the movable valve plate 133 can be greatly reduced, and the service life is prolonged by times.
In this embodiment, the housing cover 12 is provided with a limiting bolt 15, and the limiting bolt 15 penetrates through the housing cover 12 and abuts against the bottom of the groove 112. Specifically, in the present embodiment, two limiting bolts 15 are symmetrically arranged between the fastening bolts 14 on both sides of the housing cover 12. After the fastening bolt 14 is rotated to enable the static valve plates to obtain proper sealing pressure, the shell pressing cover 12 can be locked by screwing the limiting bolt 15, so that the phenomenon that when the valve core is closed, slurry is reversely pressed on the two static valve plates to enable the shell pressing cover and the main shell to be loosened to cause material leakage is avoided, and meanwhile, sealing failure of the valve core 13 caused by the fact that the fastening bolt 14 is loosened due to vibration or misoperation of personnel in the using process is avoided.
In this embodiment, the side surfaces close to the two ends of the housing are provided with observation holes 111 for observing whether leakage occurs, and the observation holes 111 are introduced into the valve cavity 101 along the radial direction of the housing. The existing material sealing valve is limited by a self sealing structure and the characteristics of magnetic material slurry, if slight material leakage occurs, the material leakage is difficult to find, so that the material leakage condition is gradually worsened until the material sealing valve is seriously damaged. To solve the problem, in the embodiment, on the basis of adopting the gate valve plate for sealing, an observation hole 111 for observing whether the valve core 13 leaks or not is further arranged on the shell, and a slight leakage fault is discovered in time, so that a serious result is avoided. Each end of the housing is provided with a plurality of the observation holes 111, and the observation holes are distributed around the axis of the valve chamber 101, so that whether the leaked slurry exists in the valve chamber 101 can be observed conveniently from different positions.
In this embodiment, the valve core driving device 2 is a hydraulic oil cylinder, and has a piston push rod 200 axially extending into the valve cavity 101. When the material sealing valve operates, the piston push rod 200 is used for pushing the movable valve sheet 133 axially to open and close the material sealing valve. The driving force of the hydraulic oil cylinder can be adjusted steplessly along with the pressing force required by the sealing of the valve plate, so that the hydraulic oil cylinder can adapt to different sealing pressures. The piston rod 200 includes a front rod 201 and a rear rod 202. The outer diameter of the front section push rod 201 is smaller than the distance between the first static valve plate 131 and the second static valve plate 132, and the front section push rod can enter the space between the first static valve plate 131 and the second static valve plate 132 to push the movable valve plate 133. The outer diameter of the rear section push rod 202 is matched with the inner diameter of the valve cavity 101, namely the diameter of the rear section push rod 202 is larger than that of the front section push rod 201, so that the overall strength and rigidity of the piston push rod 200 are improved, and the piston push rod can adapt to higher pushing acting force.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims (10)

1. An automatic gate type material sealing valve for magnetic material slurry comprises a main valve body (1), wherein the main valve body (1) comprises a shell and a valve core (13); it is characterized in that the preparation method is characterized in that,
the valve core (13) comprises a first static valve plate (131), a second static valve plate (132) and a dynamic valve plate (133) which are parallel to each other, the dynamic valve plate (133) is located between the first static valve plate (131) and the second static valve plate (132), and the surfaces of the two sides of the dynamic valve plate (133) are tightly attached to the first static valve plate (131) and the second static valve plate (132) respectively to form plane sealing;
the shell is provided with a valve cavity (101) penetrating through two ends, the valve core (13) is arranged in the valve cavity (101), and the first static valve plate (131) and the second static valve plate (132) are respectively embedded and fixed on the inner wall of the valve cavity (101);
the main valve body (1) is provided with a material injection channel (100) which penetrates through the shell, the first static valve plate (131), the second static valve plate (132) and the dynamic valve plate (133), and the material injection channel (100) is vertically intersected with the valve cavity (101);
and valve core driving devices (2) used for pushing the movable valve plates (133) in opposite directions are arranged at two ends of the main valve body (1).
2. The magnetic material slurry automatic gate type seal valve according to claim 1,
the first static valve plate (131), the dynamic valve plate (133) and the second static valve plate (132) are all made of hard alloy, the hardness is above HRC89, and the hardness of the first static valve plate (131) and the second static valve plate (132) is higher than that of the dynamic valve plate (133);
the surface roughness Ra of the contact surface among the first static valve plate (131), the movable valve plate (133) and the second static valve plate (132) is 1.6-0.8 mu m.
3. The automatic gate type seal valve for magnetic material slurry according to claim 1 or 2, wherein the housing comprises a main housing (11) and a housing gland (12), a groove (112) is formed in one side of the main housing (11), and the housing gland (12) is detachably mounted in the groove (112).
4. The automatic gate type seal valve for magnetic material slurry according to claim 3, wherein the first static valve plate (131) is fixed on the main housing (11), and the second static valve plate (132) is fixed on the housing cover (12).
5. The automatic gate type seal valve for magnetic material slurry according to claim 3, wherein the housing gland (12) and the main housing (11) are connected by a fastening bolt (14).
6. The automatic gate type seal valve for magnetic material slurry according to claim 5, wherein a limit bolt (15) is arranged on the housing gland (12), and the limit bolt (15) penetrates through the housing gland (12) and abuts against the bottom of the groove (112).
7. The automatic gate type seal valve for magnetic material slurry according to claim 1 or 2, wherein the side surfaces close to the two ends of the shell are provided with observation holes (111) for observing whether the slurry leaks or not, and the observation holes (111) are communicated into the valve cavity (101) along the radial direction of the shell.
8. The automatic gate type seal valve for magnetic material slurry according to claim 7, wherein the observation holes (111) near the two ends of the housing are plural and distributed around the axis of the valve chamber (101).
9. The automatic gate type seal valve for magnetic material slurry according to claim 1 or 2, wherein the valve core driving device (2) is a hydraulic oil cylinder having a piston push rod (200) axially extending into the valve cavity (101).
10. The automatic gate type seal valve for magnetic material slurry according to claim 9, wherein the piston push rod (200) comprises a front section push rod (201) and a rear section push rod (202), the outer diameter of the front section push rod (201) is smaller than the distance between the first static valve plate (131) and the second static valve plate (132), and the outer diameter of the rear section push rod (202) is matched with the inner diameter of the valve cavity (101).
CN202110570701.9A 2021-05-25 2021-05-25 Automatic gate type material sealing valve for magnetic material slurry Pending CN113137490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110570701.9A CN113137490A (en) 2021-05-25 2021-05-25 Automatic gate type material sealing valve for magnetic material slurry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110570701.9A CN113137490A (en) 2021-05-25 2021-05-25 Automatic gate type material sealing valve for magnetic material slurry

Publications (1)

Publication Number Publication Date
CN113137490A true CN113137490A (en) 2021-07-20

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Application Number Title Priority Date Filing Date
CN202110570701.9A Pending CN113137490A (en) 2021-05-25 2021-05-25 Automatic gate type material sealing valve for magnetic material slurry

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