阅读说明：本技术 导轨、阀芯组件及滑阀 (Guide rail, valve core assembly and sliding valve ) 是由 程向锋 武立国 杨芳 于 2021-09-10 设计创作，主要内容包括：本发明公开一种导轨,用于滑阀,包括：引导部,包括细长延伸主体,和从细长延伸主体垂直于其延伸方向和竖直方向伸出的支撑底部,所述延伸主体和支撑底部形成卡槽；装配部,从所述引导部的细长延伸主体顶部伸出,在所述引导部的延伸方向上延伸,所述装配部的横截面具有上端增大的卡榫形状,用于将所述导轨装配在位。本发明还公开了一种阀芯组件和滑阀。根据本发明的导轨、阀芯组件及滑阀采用具有卡榫形状的装配部的导轨及具有与所述装配部配合结构的节流锥,能够避免使用导轨螺栓,即使使用导轨螺栓,也能够避免导轨螺栓承受过大的拉伸应力而断裂,使得导轨螺栓仅起定位的作用,而且所述结构的导轨自身的安装、拆卸或更换更方便。(The invention discloses a guide rail for a slide valve, comprising: the guide part comprises an elongated extension body and a support bottom part, wherein the support bottom part extends out of the elongated extension body perpendicular to the extension direction and the vertical direction of the elongated extension body; and a fitting part protruding from a top of the elongated extension body of the guide part, extending in an extension direction of the guide part, the fitting part having a cross section in a shape of a tenon with an increased upper end for fitting the guide rail in place. The invention also discloses a valve core assembly and a slide valve. According to the guide rail, the valve core assembly and the slide valve, the guide rail with the tenon-shaped assembling part and the throttling cone with the structure matched with the assembling part are adopted, so that guide rail bolts can be avoided, even if the guide rail bolts are used, the guide rail bolts can be prevented from being broken due to overlarge tensile stress, the guide rail bolts only have the positioning function, and the guide rail with the structure is more convenient to mount, dismount or replace.)

1. A guide rail for a slide valve, comprising:

the guide part comprises an elongated extension body and a support bottom part, wherein the support bottom part extends out of the elongated extension body perpendicular to the extension direction and the vertical direction of the elongated extension body;

and a fitting part protruding from a top of the elongated extension body of the guide part, extending in an extension direction of the guide part, the fitting part having a cross section in a shape of a tenon with an increased upper end for fitting the guide rail in place.

2. Guide rail according to claim 1, wherein the guide rail is made of a non-metallic wear resistant material, preferably a ceramic material.

3. The guide rail according to claim 1 or 2, wherein the guide rail further comprises a guide rail through hole penetrating in a vertical direction for penetrating a fastener to position the guide rail.

4. The guide rail of claim 3, wherein the lower surface of the guide rail corresponding to the location of the guide rail through hole further comprises a recess having a size larger than the guide rail through hole for receiving an end of the fastener or for receiving a pallet and an end of the fastener passing through the pallet, the recess further for receiving a wear liner to prevent scouring by the solid phase medium flow after the end of the fastener and/or the end of the pallet and fastener are received in the recess.

5. The guide rail according to claim 1 or 2, wherein the shape of the tenon of the cross section of the fitting portion is a T shape, a Y shape, an isosceles trapezoid or a half thereof, and the shape of the cross section of the slot of the guide portion is an L shape or a U shape.

6. A valve cartridge assembly comprising:

the throttling cone comprises a throttling cone bottom part with a valve port and a hollow conical side part; and

two guide rails according to any one of claims 1-5,

two sides of the valve port at the bottom of the throttling cone comprise two assembling grooves for receiving the assembling parts of the guide rails, and the cross section of each assembling groove is in a shape corresponding to the tenon shape of each assembling part.

7. The valve core assembly of claim 6, wherein the guide rail is the guide rail of claim 3 or 4, and the position of the fitting groove of the throttling cone corresponding to the guide rail through hole comprises a through throttling cone through hole.

8. The valve core assembly of claim 7, wherein a heat insulation lining and a wear-resistant lining are sequentially arranged on the inner surface of the tapered side portion of the throttling cone from outside to inside, the throttling cone through hole extends through the heat insulation lining to reach the wear-resistant lining or penetrates through the wear-resistant lining, and when the throttling cone through hole penetrates through the wear-resistant lining, the throttling cone through hole opening at the wear-resistant lining further comprises a wear-resistant lining patch for blocking the throttling cone through hole opening.

9. A valve core assembly according to claim 8, wherein the guide and the choke cone are fitted in place by a fitting and a fitting groove, the fasteners being positioned relative to each other by fasteners passing through the choke cone through-holes and guide through-holes and spaced a distance from the wear liner towards the end of the wear liner, the fasteners preferably comprising bolts, a spacing barrel and nuts, the bolts and spacing barrel of the fasteners being removable from the heat and wear liner sides of the choke cone, the nuts being removable from the guide side.

10. The valve cartridge assembly of claim 6, further comprising a valve plate including a valve plate body, both side portions of the valve plate body being received in the catching grooves of the two guide rails to be reciprocally moved in the extending direction of the guide rail guide portions, so that the valve port of the throttle cone bottom can be maintained in any state between a fully closed state and a fully open state with the movement of the valve plate.

11. A valve cartridge assembly according to claim 10, wherein the valve plate body is a straight plate of rectangular, T-shaped, inverted T-shaped or "concavo-convex" shape on the sides in cross-section, the valve plate body being made of a non-metallic wear resistant material, preferably ceramic.

12. A valve cartridge assembly according to claim 11, wherein the valve plate further comprises a valve stem connected to the valve plate body, one end of the valve stem being driven by a drive means and the other end being connected to the valve plate body, the end connected to the valve plate body comprising a valve stem through bore perpendicular to its axis, or the end comprising at least two branches, each branch being provided with a through bore, the valve stem being connected to a blind bore in the valve plate body by a fastener passing through the through bores of the branches.

13. A spool valve comprising a valve housing, and a spool assembly according to any of claims 6-12 disposed within the valve housing.

14. The slide valve according to claim 13, wherein the valve plate is a single valve plate, the valve housing is a T-shaped three-way pipe body including a main pipe and a branch pipe extending from a middle portion of the main pipe, the throttle cone is disposed in the main pipe, a bottom portion of the throttle cone is located at an intersection of the main pipe and the branch pipe, and the valve rod is disposed in the branch pipe in parallel with the branch pipe, and the valve plate is reciprocated along the branch pipe by being driven by a driving device.

15. The slide valve according to claim 13, wherein the valve plate is two split valve plates, the valve housing is a cross-shaped four-way tube body including a first tube and a second tube intersecting each other, the throttle cone is disposed in the first tube, a bottom portion of the throttle cone is located at an intersection of the first tube and the second tube, and the valve rod is disposed in the second tube in parallel with the second tube, and the valve plate is reciprocated along the second tube by driving of a driving device.

Technical Field

The invention relates to the field of petrochemical industry, in particular to a guide rail of a slide valve for catalytic cracking. The invention also relates to a valve core assembly of the slide valve for catalytic cracking and the slide valve, which comprise the guide rail.

Background

The catalytic cracking slide valve is mainly used on a catalyst circulating pipeline or a flue gas pipeline, and a medium passing through the catalytic cracking slide valve is a high-temperature catalyst or high-temperature flue gas with catalyst particles. Due to special use position, complex medium passing through the device and severe working environment, main parts in the catalytic cracking slide valve, such as guide rails and the like, are easy to damage, and potential safety hazards are often caused to the stable operation of the device.

In order to facilitate installation and replacement of the guide rail, the guide rail is detachably connected with the throttle cone by arranging a guide rail bolt between the throttle cone and the guide rail in the prior art. However, in the structure, the guide rail and the throttling cone are completely connected by the guide rail bolt, and under the high-temperature working condition, the tensile stress borne by the guide rail bolt is increased sharply due to the expansion deformation of the guide rail, so that the tensile stress borne by the guide rail bolt is increased to exceed the maximum yield stress, and finally the conditions of guide rail bolt fracture and valve plate falling occur. The erosion of the catalyst can also cause abrasion and corrosion of the guide rail bolt, and the fracture of the guide rail bolt is accelerated. In order to prevent the guide rail bolt from being broken under the high-temperature working condition and the catalyst washing, the prior art generally adopts methods of thickening the diameter of the guide rail bolt, increasing the number of the guide rail bolts, replacing the material of the guide rail bolt, integrally assembling the guide rail bolt, spot welding, manufacturing the guide rail bolt by a rolling process and the like. Although the method improves the problem of fracture of the guide rail bolt, the method also has the problems of complex processing technology and increased cost, and the problem of fracture of the guide rail bolt is not fundamentally solved.

Disclosure of Invention

It is an object of the present invention to provide a guide rail, a valve core assembly and a spool valve comprising the guide rail that at least ameliorate the above problems.

According to an aspect of the present invention, there is provided a guide rail for a slide valve, comprising:

the guide part comprises an elongated extension body and a support bottom part, wherein the support bottom part extends out of the elongated extension body perpendicular to the extension direction and the vertical direction of the elongated extension body;

and a fitting part protruding from a top of the elongated extension body of the guide part, extending in an extension direction of the guide part, the fitting part having a cross section in a shape of a tenon with an increased upper end for fitting the guide rail in place.

According to the invention, through the guide rail tenon-shaped assembling part, the use of a guide rail bolt can be avoided, and even if the guide rail bolt is used, the guide rail bolt can be prevented from being broken due to the overlarge tensile stress, so that the guide rail bolt only plays a role in positioning, and the guide rail with the structure is more convenient to mount, dismount or replace.

Preferably, the guide rail is made of a non-metallic wear resistant material, preferably a ceramic material.

The guide rail can be integrally formed by a non-metal wear-resistant material, so that the wear resistance and the catalyst erosion resistance of the guide rail are improved.

Preferably, the guide rail further comprises a guide rail through hole penetrating in the vertical direction for penetrating a fastener to position the guide rail.

Preferably, the lower surface of the guide rail corresponding to the through hole of the guide rail further comprises a recess with a size larger than that of the through hole of the guide rail for accommodating the end part of the fastener or for accommodating the end part of the support plate and the fastener penetrating through the support plate, and the recess is also used for accommodating a wear-resistant lining so as to avoid being washed by the solid medium flow after the end part of the fastener and/or the end parts of the support plate and the fastener are accommodated in the recess.

The guide rail according to the invention preferably uses a fastening element comprising a carrier plate for positioning the guide rail, which carrier plate also serves to reinforce the guide rail according to the invention, which guide rail is preferably manufactured from a non-metallic wear-resistant material.

Preferably, the shape of the tenon of the cross section of the assembling part is a T shape, a Y shape, an isosceles trapezoid or a half shape thereof, and the shape of the cross section of the clamping groove of the guiding part is an L shape or a U shape.

According to another aspect of the present invention there is provided a valve cartridge assembly comprising:

the throttling cone comprises a throttling cone bottom part with a valve port and a hollow conical side part; and

two guide rails according to the preceding, wherein,

two sides of the valve port at the bottom of the throttling cone comprise two assembling grooves for receiving the assembling parts of the guide rails, and the cross section of each assembling groove is in a shape corresponding to the tenon shape of each assembling part.

Preferably, the guide rail further comprises a guide rail through hole penetrating in the vertical direction for penetrating a fastener to position the guide rail, the lower surface of the guide rail further comprises a recess with a size larger than that of the guide rail through hole for accommodating an end of the fastener or accommodating a supporting plate and an end of the fastener penetrating through the supporting plate, the recess is further used for accommodating a wear-resistant lining to prevent the end of the fastener and/or the ends of the supporting plate and the fastener from being washed by solid phase medium flow after being accommodated in the recess, and the assembling groove of the throttling cone comprises a through throttling cone through hole penetrating in a position corresponding to the guide rail through hole.

The guide rail of the valve core assembly according to the invention is preferably positioned using a fastener comprising a backing plate, which also serves to reinforce the guide rail of the invention, which is preferably made of a non-metallic wear-resistant material. In addition, as the throttling cone is provided with the through throttling cone through hole, the guide rail bolt can be detached or replaced through the upper opening of the throttling cone through hole, so that the guide rail bolt is more convenient to detach or replace.

Preferably, still set gradually thermal-insulated lining and wear-resisting lining from outside to inside on the toper lateral part internal surface of choke cone, the choke cone through-hole extends to run through thermal-insulated lining and reaches wear-resisting lining department or pass wear-resisting lining when the choke cone through-hole passes wear-resisting lining, the choke cone through-hole opening of wear-resisting lining department still includes wear-resisting lining filling block, is used for the shutoff the choke cone through-hole opening.

According to the valve core assembly, the wear-resistant lining patch is arranged at the opening of the throttling cone through hole in the wear-resistant lining, so that a guide rail bolt arranged in the throttling cone through hole can be protected, the position of the guide rail bolt can be indicated, and the follow-up detachment or replacement of the guide rail bolt is facilitated.

Preferably, the guide rail and the throttle cone are fitted in place by a fitting portion and a fitting groove, the fastener is positioned relative to each other by a fastener passing through the throttle cone through-hole and the guide rail through-hole, and the fastener is spaced apart from the wear-resistant lining toward an end of the wear-resistant lining by a distance, the fastener preferably includes a bolt shank, a restraining barrel, and a nut, the bolt shank and the restraining barrel of the fastener are attachable and detachable from the heat-insulating lining and wear-resistant lining sides of the throttle cone, and the nut is attachable and detachable from the guide rail side.

Preferably, the valve core assembly further comprises a valve plate, wherein the valve plate comprises a valve plate main body, two side parts of the valve plate main body are received in the clamping grooves of the two guide rails to move back and forth along the extending direction of the guide rail guide parts, so that the valve port at the bottom of the throttling cone can be kept in any state between a fully closed state and a fully opened state along with the movement of the valve plate.

Preferably, the valve plate main body is a straight plate with a rectangular, T-shaped, inverted T-shaped or concave-convex-concave-shaped side part, and is made of a non-metal wear-resistant material, preferably ceramic.

Preferably, the valve core further comprises a valve rod connected with the valve plate main body, one end of the valve rod is driven by a driving device, the other end of the valve rod is connected with the valve plate main body, the end connected with the valve plate main body comprises a valve rod through hole perpendicular to the axis of the valve rod through hole, or the end comprises at least two branches, each branch is provided with a through hole, and the valve rod is connected with the blind hole on the valve plate main body through the through holes of the branches by a fastener.

The valve plate main body and the valve rod in the valve core assembly can effectively connect the valve plate main body and the valve rod which are made of different materials, such as a nonmetal wear-resistant valve plate main body and a metal valve rod.

According to yet another aspect of the present invention, there is provided a spool valve comprising a valve housing, and the aforementioned spool assembly disposed within the valve housing.

Preferably, the valve plate is a single valve plate, the valve housing is a T-shaped three-way pipe body, the three-way pipe body comprises a main pipe and a branch pipe extending from the middle of the main pipe, the throttling cone is arranged in the main pipe, the bottom of the throttling cone is positioned at the intersection of the main pipe and the branch pipe, the valve rod is arranged in the branch pipe in parallel with the branch pipe, and the valve plate is driven by a driving device to move back and forth along the branch pipe.

Preferably, the valve plate is two valve plates of run from opposite directions, the valve case is the cross-shaped cross-pipe body, cross-pipe body is including crossing first pipe and second pipe, the throttle awl sets up in the first pipe, throttle awl bottom is located the intersection of first pipe and second pipe, the valve rod is on a parallel with the second pipe sets up in the second pipe, drive by drive arrangement makes the valve plate follow the second pipe reciprocating motion.

According to the guide rail, the valve core assembly and the slide valve, the guide rail with the tenon-shaped assembling part and the throttling cone with the structure matched with the assembling part are adopted, so that guide rail bolts can be avoided, even if the guide rail bolts are used, the guide rail bolts can be prevented from being broken due to overlarge tensile stress, the guide rail bolts only have the positioning function, and the guide rail with the structure is more convenient to mount, dismount or replace.

Drawings

Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:

FIG. 1 is a perspective view from the top and side of a first embodiment of a guide rail according to the present invention;

FIG. 2 is a perspective view of the first embodiment of the guide rail shown in FIG. 1 from the bottom and side;

FIG. 3 is a top view of the first embodiment of the guide rail shown in FIG. 1;

FIG. 4 is a front view of the first embodiment of the guide rail shown in FIG. 1;

FIG. 5 is a cross-sectional view, taken through section A-A, of the first embodiment of the guide rail shown in FIG. 3;

FIG. 6 is a front view of a second embodiment of a guide rail according to the present invention;

FIG. 7 is a cross-sectional view of a second embodiment of the guide rail shown in FIG. 6 taken at the same location as the first embodiment;

FIG. 8 is a perspective view of a first embodiment of a choke cone according to the present invention;

FIG. 9 is a front view of the first embodiment of the choke cone shown in FIG. 8 as seen in the direction of extension of the guide rails;

FIG. 10 is a cross-sectional view of the first embodiment of the choke cone shown in FIG. 8 taken in a section perpendicular to the direction of extension of the rails;

FIG. 11 is a front view of a second embodiment of a choke cone according to the invention, seen in the direction of extension of the guide rails;

FIG. 12 is a front view of a third embodiment of a choke cone according to the invention, seen in the direction of extension of the guide rails;

FIG. 13 is a front view of a fourth embodiment of a choke cone according to the invention, seen in the direction of extension of the guide rails;

FIG. 14 is a perspective view of a first embodiment of a valve plate according to the present invention;

FIG. 15 is a top plan view of the first embodiment of the valve plate illustrated in FIG. 14;

FIG. 16 is an enlarged partial cross-sectional view of the first embodiment of the valve plate illustrated in FIG. 14 as assembled in position and taken in cross-section perpendicular to the direction of extension of the guide rails;

FIG. 17 is a cross-sectional view taken at section B-B shown in FIG. 15;

FIG. 18 is an enlarged partial view of the circle segment of FIG. 17;

FIG. 19 is a partial cross-sectional view of a second embodiment of a valve plate according to the present invention assembled in place taken in cross-section perpendicular to the direction of extension of the guide rails;

FIG. 20 is a partial cross-sectional view of a third embodiment of a valve plate according to the present invention assembled in place taken in cross-section perpendicular to the direction of extension of the guide rails;

FIG. 21 is a partial cross-sectional view of a fourth embodiment of a valve plate according to the present invention assembled in place taken in cross-section perpendicular to the direction of extension of the guide rails;

FIG. 22 is a perspective view of a first embodiment of a spool valve according to the present invention;

FIG. 23 is a top plan view of the first embodiment of the spool valve shown in FIG. 22;

FIG. 24 is a front cross-sectional view of the first embodiment of the spool valve shown in FIG. 22 taken in a cross-section perpendicular to the direction of rail extension;

FIG. 25 is a side cross-sectional view of the first embodiment of the spool valve shown in FIG. 22 taken in a vertical section parallel to the direction of rail extension and through the valve stem;

FIG. 26 is an enlarged partial view of the cartridge portion of FIG. 24;

fig. 27 is a side sectional view of a second embodiment of a spool valve according to the present invention, taken in a vertical section parallel to the direction of extension of the guide rails and through the valve stem.

Detailed Description

The present application is described in further detail below. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not restrictive of the invention. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

According to the guide rail, the structure of the guide rail in the prior art is improved, and meanwhile, the assembly structure corresponding to the improved structure of the guide rail is arranged at the bottom of the throttling cone, so that the guide rail can be assembled on the throttling cone without guide rail bolts, and even if the guide rail bolts are used, the guide rail bolts only play a role in positioning and do not need to bear overlarge stress.

For clarity of description, in the present specification and drawings, the directional terms "top", "side", "bottom" and "vertical" used are all directional descriptions with respect to the direction in which the guide rail is horizontally placed and shown in the drawings, and the terms are used only for the purpose of explanation and not limitation of the structure, and the structure is not limited to use in other directions.

FIG. 1 is a perspective view from the top and side of a first embodiment of a guide rail according to the present invention; FIG. 2 is a perspective view of the first embodiment of the guide rail shown in FIG. 1 from the bottom and side;

fig. 3 is a top view of the first embodiment of the guide rail shown in fig. 1. Referring to fig. 1 to 3 together, the guide rail is generally designated by reference numeral 110 and includes a guide portion 111 and a fitting portion 112. The guide portion 111 includes an elongated extension body 1111, and a support bottom 1112 protruding from the elongated extension body 1111 perpendicularly to an extension direction and a vertical direction thereof, the extension body 1111 and the support bottom 1112 forming a catch 1113. The fitting part 112 protrudes from the top of the elongated extension body 1111 of the guide part 111 to extend in the extending direction of the guide part 111.

FIG. 4 is a front view of the embodiment of the guide rail shown in FIG. 1; fig. 5 is a cross-sectional view, taken through section a-a, of the first embodiment of the guide rail shown in fig. 3. As can be seen from fig. 4 and 5, the fitting portion 112 has a tenon shape with an increased upper end in cross section, in this embodiment, the tenon shape is Y-shaped, and the fitting portion 112 is used to fit the guide rail 110 in place. The catching groove 1113 of the guide portion 111 has a U-shaped cross-sectional shape.

The tenon-shaped fitting portion 112 can be engaged with the throttle cone after being fitted in place on the throttle cone to be fitted, and can be fastened in place without a guide bolt. Even if a guide bolt is used, a small number of guide bolts can be used to position the guide 110 in the extension direction, and the guide bolt does not need to bear the weight of the guide 110 and a large tensile stress during thermal expansion.

As can also be seen in fig. 1, 3, 5 and 7, the guide rail 110 is further provided with at least one guide rail bolt hole 113, which is a guide rail through hole penetrating through the guide rail in the vertical direction. It can also be seen in conjunction with fig. 2 and 5 that the lower surface of the rail 110 at locations corresponding to the rail through-holes 113 also includes recesses 114 sized larger than the rail through-holes 113 for receiving the ends of the fasteners, or for receiving the pallet and the ends of the fasteners passing through the pallet, the recesses 114 also serving to receive a wear liner to prevent washout by the flow of solid phase medium, such as the flow of catalyst medium, after the ends of the fasteners and/or the ends of the pallet and the fasteners are received within the recesses 114.

The structure of the guide rail 110 as described above is preferably applicable to a guide rail made of a non-metallic wear-resistant, high-temperature-resistant material, and more preferably made of a ceramic material. The guide rail made of the nonmetal wear-resistant and high-temperature-resistant material has better wear resistance, high temperature resistance and corrosion resistance compared with the traditional metal guide rail. By providing the recess 114 in the lower surface of the rail 110, the metal pallet and fastener can reinforce the rail 110 when the rail 110 is assembled in place using the metal pallet and fastener, so that the rail 110 can provide sufficient strength comparable to conditions for a metal rail even if made of a wear-resistant non-metallic material.

FIG. 6 is a front view of a second embodiment of a guide rail according to the present invention; fig. 7 is a cross-sectional view of the second embodiment of the guide rail shown in fig. 6, taken at the same location as the first embodiment. Like parts in the second embodiment of the guide rail according to the invention are given the same reference numerals as in the first embodiment, but only the second digit is increased by 1 for the sake of distinction.

As can be seen by referring to fig. 6 and 7 together, in the second embodiment of the guide rail according to the present invention, the fitting portion 122 is still Y-shaped in cross section, but the catching groove 1213 of the guide portion 121 is L-shaped in cross section.

The fitting portion of the guide rail according to the present invention is not limited to the Y-shape shown in the first embodiment of the guide rail and the second embodiment of the guide rail, but may be a T-shape, an isosceles trapezoid or a half Y-shape, a half T-shape or a half isosceles trapezoid, etc., as long as the guide rail can snap itself onto the choke cone when fitted in place in the choke cone, and can be fixed in place in the vertical direction.

FIG. 8 is a perspective view of a first embodiment of a choke cone according to the present invention; fig. 9 is a front view of the first embodiment of the choke cone shown in fig. 8, seen in the direction of extension of the guide rails. Referring to fig. 8 and 9 together, the choke cone is generally designated by reference numeral 210, and the choke cone 210 includes a choke cone bottom 211 having a valve port 2112, and a hollow cone side 212, and two fitting grooves 2111 for receiving the fitting portions 112, 122 of the guide rails 110, 120 are further included on both sides of the valve port 2112 of the choke cone bottom 211. The cross-sectional shape of the fitting groove 2111 corresponds to the Y-shaped tenon shape of the fitting portions 112, 122.

Fig. 10 is a sectional view of the throttle cone embodiment shown in fig. 8, taken in a section perpendicular to the direction of extension of the guide rail. It can also be seen from fig. 10 that the position of the fitting groove 2111 of the throttle cone 210 corresponding to the guide rail through hole 113 includes a throttle cone through hole 2113 therethrough.

Fig. 11 is a front view of a second embodiment of a choke cone according to the invention, seen in the direction of extension of the guide rails. The same components in the second embodiment of the choke cone according to the invention are given the same reference numerals as in the first embodiment, but only the second digit is incremented by 1 for the sake of distinction.

Referring to fig. 11, it can be seen that the fitting groove 2211 is half Y-shaped in cross-section in the second embodiment of the choke cone according to the present invention.

Fig. 12 is a front view of a third embodiment of a choke cone according to the invention, seen in the direction of extension of the guide rails. The same components in the third embodiment of the choke cone according to the invention are given the same reference numerals as in the first embodiment, but only the second digit is incremented by 2 for the sake of distinction.

Referring to fig. 12, it can be seen that the fitting groove 2311 has a half T-shaped cross-section in the third embodiment of the choke cone according to the present invention.

Fig. 13 is a front view of a fourth embodiment of a choke cone according to the invention, seen in the direction of extension of the guide rails. The same parts in the fourth embodiment of the choke cone according to the invention are given the same reference numerals as in the first embodiment, but only the second digit is incremented by 3 for the sake of distinction.

Referring to fig. 13, it can be seen that in the fourth embodiment of the choke cone according to the present invention, the fitting groove 2411 has a half trapezoidal cross-section.

The cross-sectional shape of the fitting groove of the present invention is not limited to the shape shown in fig. 8, 11 to 13, and the cross-sectional shape of the fitting groove corresponds to the cross-sectional shape of the guide rail according to the present invention, and may be Y-shaped, T-shaped, isosceles trapezoid or half Y-shaped, half T-shaped or half isosceles trapezoid, etc., as long as the guide rail can snap itself onto the throttle cone when fitted in place in the throttle cone, and can be fixed in place in the vertical direction.

FIG. 14 is a perspective view of a first embodiment of a valve plate according to the present invention; FIG. 15 is a top view of the valve plate embodiment shown in FIG. 14. Referring to fig. 14 and 15 together, the valve plate is generally designated by reference numeral 310, and the valve plate 310 includes a valve plate body 311 and a valve stem 312 connected to the valve plate body 311. One end of the valve rod 312 is connected to the valve plate body 311, and the other end is driven by a driving device to reciprocate the valve plate body in the guide extending direction. Both side portions 3111 of the valve plate body 311 are adapted to be received in the catching grooves 1113, 1213 of the two guide rails 110, 120 shown in fig. 1 to 7, and reciprocate in the extending direction of the guide portions 111, 121 of the guide rails 110, 120 when the guide rails 110, 120 are fitted in place on the respective throttle cones shown in fig. 8 to 13, so that the valve ports 2112 of the throttle cone bottom portion 211 of the first embodiment of the throttle cone and the valve ports (not shown in the drawings) of the throttle cone bottom portions 221, 231, 241 of the second to fourth embodiments of the throttle cone can be maintained in any state between the fully closed state and the fully open state with the movement of the valve plate 310.

Fig. 16 is a partially enlarged sectional view of the first embodiment of the valve plate shown in fig. 14 taken in place by a section perpendicular to the extending direction of the guide rail, which corresponds to the portion I shown in fig. 24. Referring to fig. 16, which shows the valve plate main body 311 and the side portion 3111 thereof, in the first embodiment of the valve plate, the valve plate main body 311 is a straight plate having a cross section in a shape of "concave-convex".

FIG. 17 is a cross-sectional view taken at section B-B shown in FIG. 15; fig. 18 is an enlarged partial cross-sectional view of the circled portion in fig. 17. Referring to fig. 14, 15, 17 and 18 together, it can be seen that one end of the valve stem 312 is connected to the valve plate body 311, the end of the valve stem 312 connected to the valve plate body 311 includes a valve stem through hole (not labeled) perpendicular to its axis, and the valve stem 312 is connected to a blind hole (seen in fig. 18) on the valve plate body 311 by a fastener 3112 through the valve stem through hole.

With further reference to fig. 14, it can also be seen that to increase the strength of the connection of the valve plate body 311 to the valve stem 312, the valve plate body 311 may be locally thickened at the connection.

The valve plate body of the valve plate according to the present invention is generally made of a non-metallic wear-resistant, high-temperature resistant material, preferably ceramic, and the valve stem is generally made of metal, so that it is necessary to use a unique coupling structure between the valve plate body and the valve stem as shown in fig. 14, 17 and 18.

Fig. 19 is an enlarged partial sectional view of a second embodiment of the valve plate according to the present invention, taken in place by a section perpendicular to the direction of extension of the guide rails, which corresponds to section I shown in fig. 24. The same parts of the second embodiment of the valve plate according to the invention are given the same reference numerals as in the first embodiment, with the number 1 being added only in the second position for the sake of distinction.

Referring to fig. 19, there is shown a valve plate body 321 and its side portion 3211. in this second embodiment, the valve plate body 321 is a straight plate with an inverted T-shaped cross-section.

Fig. 20 is an enlarged partial sectional view of a third embodiment of a valve plate according to the present invention, taken in place by a section perpendicular to the direction of extension of the guide rails, which corresponds to section I shown in fig. 24. The same parts of the valve plate according to the invention in the third embodiment are given the same reference numerals as in the first embodiment, but only the second digit is incremented by 2 for the sake of distinction.

Referring to FIG. 20, there is shown a valve plate body 331 and a side portion 3311 thereof, in a third embodiment of the valve plate, the valve plate body 331 is a straight plate having a T-shaped cross-section.

Fig. 21 is an enlarged partial cross-sectional view of a fourth embodiment of a valve plate according to the present invention assembled in place taken perpendicular to the cross-section of the guide rails, the enlarged partial cross-sectional view corresponding to section I shown in fig. 24. The same parts in the fourth embodiment of the valve plate according to the invention are given the same reference numerals as in the first embodiment, but only the second digit is increased by 3 for the sake of distinction.

Referring to fig. 21, there is shown a valve plate main body 341 and a side portion 3411 thereof, in the fourth embodiment of the valve plate, the valve plate main body 341 is a straight plate having a rectangular cross section.

The connection structure of the valve plate body and the valve stem of the valve plate according to the present invention may also have various alternative forms. For example, the end of the valve stem connected to the valve plate body may also comprise at least two branches, each provided with a through hole, the valve stem being connected to the valve plate body by a blind hole corresponding to the number of branches, passing through the through holes of the branches by fasteners.

FIG. 22 is a perspective view of a first embodiment of a spool valve according to the present invention; FIG. 23 is a top plan view of the first embodiment of the spool valve shown in FIG. 22; FIG. 24 is a front cross-sectional view of the first embodiment of the spool valve shown in FIG. 22 taken in a cross-section perpendicular to the direction of rail extension; fig. 25 is a side cross-sectional view of the first embodiment of the spool valve shown in fig. 22 taken in a vertical section parallel to the direction of rail extension and through the valve stem.

With reference to fig. 22 and 23, it can be seen that a first embodiment of a slide valve according to the present invention, generally designated by the reference numeral 10, comprises a valve housing (not designated in its entirety) which is a T-shaped three-way tubular body comprising a main tube 101 and a branch tube 102 extending from the middle of the main tube 101, and a spool assembly (not designated in its entirety) disposed within the valve housing.

A valve core assembly provided in a valve housing according to the present invention will now be described with reference to fig. 22 to 25, together with reference to the views of the choke cone shown in fig. 8 to 13, the guide rail shown in fig. 1 to 7, and the valve plate shown in fig. 14 to 21.

The valve core assembly according to the present invention includes a throttle cone 210, two guide rails 110 and a single valve plate 310, the throttle cone 210 in the valve core assembly can be any one of the throttle cones according to the embodiments of the present invention, the guide rail 110 can be any one of the guide rails according to the embodiments of the present invention matched with the throttle cone, the valve plate 310 can be any one of the guide rails according to the embodiments of the present invention matched with the guide rail, and the description will be given only by taking the throttle cone 210 shown in the first embodiment of the throttle cone and the guide rail 110 shown in the first embodiment of the guide rail and the valve plate 310 shown in the first embodiment of the valve plate as examples.

With further reference to fig. 24 and 25, the guide rail 110 and the choke cone 210 are shown assembled in place by the assembly portion 112 of the guide rail 110 and the assembly slot 2111 of the choke cone base 211, with both side portions of the valve plate 310 received in the pockets 1113 (see fig. 1 and 2) of the two guide rails 110. Due to the Y-shaped tenon shape of the mounting portion 112 of the guide rail 110, the guide rail 110 itself can be integrated into the choke cone 210, and the guide rail can be fastened in place without using a guide rail bolt, which only plays a positioning role even if a guide rail bolt is used, and does not bear the weight of the guide rail and the tensile stress generated by thermal expansion in use of the spool valve.

The position of the assembling groove 2111 (see fig. 10) of the throttling cone 210 corresponding to the guide rail through hole 113 (see fig. 3) comprises a through throttling cone through hole 2113, the inner surface of the conical side part 212 of the throttling cone 210 is also provided with a heat insulation lining 213 and a wear-resistant lining 214 from outside to inside, the throttling cone through hole 2113 extends through the heat insulation lining 213 to reach the wear-resistant lining or passes through the wear-resistant lining, and when the throttling cone through hole 2113 passes through the wear-resistant lining 214, the opening of the throttling cone through hole 2113 at the wear-resistant lining 214 also comprises a wear-resistant lining patch 216 (see fig. 25) for plugging the opening of the throttling cone through hole 2113.

Fig. 26 is a partially enlarged view of a portion of the restraining barrel in fig. 24, which corresponds to the portion II shown in fig. 24. The portion of the choke cone 210 of fig. 24 extending into the choke cone through hole 2113 in the thermal liner 213 is shown, as well as the retention barrel 412 disposed in the choke cone through hole 2113 of that portion and the portion of the guide bolt 413 assembled with the retention barrel 412. In this embodiment, the nut of the guide bolt 413 can be mounted and dismounted on the side of the guide rail (not shown in the figure) of the bottom 211 of the throttle cone 210, the bolt rod of the guide bolt 413 can be mounted and dismounted on the heat-insulating lining 213 or the wear-resistant lining 214 of the throttle cone 210, and the use of the limiting cylinder 412 shortens the distance for taking out the bolt rod of the guide bolt 413 from the side of the heat-insulating lining 213, so that the operation is convenient, and the mounting and dismounting of the guide rail is more convenient. The use of the spacing cylinder 412 is not required and the spacing cylinder 412 may not be used.

The installation direction of the guide bolt 413 may also be opposite to the direction shown in fig. 26, that is, the nut of the guide bolt 413 and the limiting cylinder 412 may be installed and removed at the heat insulation lining 213 or the wear-resistant lining 214 of the throttle cone 210, and the bolt shaft of the guide bolt 413 may be installed and removed at the guide rail (not shown) side of the throttle cone bottom 211 of the throttle cone 210.

The throttle cone 210 is disposed in the main pipe 101, the throttle cone base 211 of the throttle cone 210 is located at the intersection of the main pipe 101 and the branch pipe 102, and the valve rod 312 is disposed in the branch pipe 102 in parallel with the branch pipe 102, and is driven by a driving device (not shown) to reciprocate the valve plate 310 along the branch pipe 102.

Fig. 27 is a side sectional view of a second embodiment of a spool valve according to the present invention, taken in a vertical section parallel to the direction of extension of the guide rails and through the valve stem. The same reference numerals are used for the same components in the second embodiment of the slide valve according to the invention as in the first embodiment, and for the sake of distinction only the first digit of the reference numerals of the slide valve as a whole, the first and second tubes is incremented by 1, and the remaining components are incremented by 1 in the second digit.

In a spool valve according to a second embodiment of the present invention, the spool valve is generally designated 20, and the spool valve 20 includes a valve housing having a cross-shaped four-way pipe body including a first pipe 201 and a second pipe 202 intersecting each other, a choke cone 220 is disposed in the first pipe 201, and a choke cone bottom 221 is located at an intersection of the first pipe 201 and the second pipe 202. The slide valve 20 further includes first and second valve plates 320 and 320' which are opened in a half and are symmetrically disposed on the guide rail 120 installed on the throttle cone bottom 221. The first shutter 320 and the second shutter 320 'are respectively driven by the corresponding driving means such that the first shutter 320 and the second shutter 320' reciprocate along the second pipe 202 in the opposite direction or the reverse direction, when the first shutter 320 and the second shutter 320 'move to abut against each other in the opposite direction, the valve port 2212 is closed, the slide valve 20 is in the closed state, and when the first shutter 320 and the second shutter 320' move in the reverse direction from the abutting position, the valve port 2212 is gradually opened, and the slide valve 20 is in the open state.

The slide valve according to the invention is not limited to the embodiments described above but can also be realized in a number of ways, for example the first and second ducts of the slide valve housing may be arranged at an angle in different planes, or the first and second valve plates may not be actuated in conjunction, for example only one of them may be actuated to open the slide valve.

In summary, the guide rail, the valve core assembly and the slide valve provided by the invention adopt the guide rail with the tenon-shaped assembling part and the throttling cone with the structure matched with the assembling part, so that the guide rail bolt can be avoided from being used, even if the guide rail bolt is used, the guide rail bolt can be avoided from being broken due to overlarge tensile stress, the guide rail bolt only plays a role in positioning, and the guide rail with the structure is more convenient to mount, dismount or replace.

The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.