Ceramic valve core structure of regulating valve

Abstract

The utility model discloses a ceramic valve core structure of a regulating valve, which relates to the technical field of valve processing and manufacturing and comprises a supporting assembly, a positioning guide assembly, a pressing guide assembly, first valve core ceramic, second valve core ceramic and ceramic glue, wherein a positioning guide assembly is arranged on the supporting assembly, a first valve element ceramic and a second valve element ceramic are arranged between the positioning guide assembly and the supporting assembly, and a pressing guide assembly is arranged at the end, away from the supporting assembly, of the positioning guide assembly; the outer wall of the first valve element ceramic and the outer wall of the second valve element ceramic are connected with the positioning guide assembly through ceramic glue, and the first valve element ceramic and the second valve element ceramic are connected in a matched mode. According to the invention, ceramic is selected to replace a steel internal part, and the ceramic adhesive is adopted for bonding, so that other combination modes of the ceramic and the steel part, such as hot inlaying and the like, are replaced. The device is simple in structure, convenient to operate, capable of achieving bonding connection targets of different specifications and different sizes, easy to operate and good in overall connection rigidity.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve processing and manufacturing technical field, concretely relates to a ceramic valve core structure of regulating valve. BACKGROUND

[0002] The regulating valve has wide application in petroleum chemical industry and metal smelting industry, and is mainly used for adjusting the flow, flow rate and temperature of medium. The working conditions faced by the regulating valve are different, and the material selection of the valve core inner part is also different. The material quality and service life of the regulating valve inner part should be evaluated from the aspects of working condition, maintenance frequency of chemical pipeline, pipeline service life and the like.

[0003] At present, in the field of petroleum chemical industry and the like, the regulating valve inner part is mostly made of steel, and a corresponding hardening scheme is used to improve the service life of the valve. However, in the field of metallurgical industry and the like, due to the high-temperature working condition and the high-flow-speed medium scouring, the service life of the ordinary steel inner part of the regulating valve is extremely short, and cannot meet the normal operation and production capacity of the pipeline.

[0004] Therefore, a ceramic valve core structure of regulating valve is needed to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme, a ceramic valve core structure of regulating valve, comprising: a support assembly, a positioning guide assembly, a compression guide assembly, a first valve core ceramic, a second valve core ceramic and a ceramic adhesive;

[0006] The positioning guide assembly is arranged on the support assembly, the first valve core ceramic and the second valve core ceramic are arranged between the positioning guide assembly and the support assembly respectively, and the compression guide assembly is arranged at the end of the positioning guide assembly away from the support assembly.

[0007] The outer walls of the first valve core ceramic and the second valve core ceramic are connected with the positioning guide assembly through the ceramic adhesive, and the first valve core ceramic and the second valve core ceramic are connected in cooperation.

[0008] The first valve core ceramic comprises a conical ceramic body and a protruding block.

[0009] The first valve core ceramic is the conical ceramic body, and the conical ceramic body is provided with the protruding block at the end close to the second valve core ceramic.

[0010] The second valve core ceramic comprises a cylindrical ceramic body, a recessed block and a clamping end.

[0011] The second valve core ceramic is the cylindrical ceramic body, the cylindrical ceramic body is provided with the recessed block near one end of the first valve core ceramic, and the cylindrical ceramic body is provided with the clamping end away from one end of the first valve core ceramic.

[0012] Further, as a preferred, the convex block and the recessed block are connected in a stop opening manner.

[0013] Further, as a preferred, the support assembly comprises a base, a seat hole, a stop opening part and a connecting shaft.

[0014] The seat hole is arranged on the base, the stop opening part is arranged on the seat hole, and the connecting shaft is threadedly connected with the seat hole.

[0015] Further, as a preferred, the connecting shaft comprises a first mounting head, a second mounting head, a connecting part, a guide part and a shaft shoulder.

[0016] The first mounting head is threadedly connected with the seat hole, the first mounting head is connected with the guide part through the connecting part away from one end of the seat hole, the guide part is provided with the second mounting head away from one end of the connecting part, and the shaft shoulder is arranged at the connecting part and the guide part.

[0017] Further, as a preferred, the positioning and guiding assembly comprises a guide sleeve, a conical sleeve and a steel outer sleeve.

[0018] The steel outer sleeve is arranged on the base and sleeves the connecting shaft inside, the guide sleeve is sleeved on the outer wall of the guide part, one end of the guide sleeve is connected with the shaft shoulder, and the other end is connected with the conical sleeve sleeved on the outer wall of the guide part.

[0019] Further, as a preferred, the pressing and guiding assembly comprises a cushion block, a pressing plate and a pressing nut.

[0020] The cushion block is sleeved on the outer wall of the second mounting head and connected with one end of the conical sleeve away from the guide sleeve, the pressing plate is sleeved on the outer wall of the second mounting head and connected with one end of the cushion block away from the conical sleeve, and one end of the pressing plate away from the cushion block is abutted with the pressing nut arranged on the outer wall of the second mounting head.

[0021] Further, as a preferred, the steel outer sleeve comprises a second mounting position, a first mounting position and a clamping shoulder.

[0022] The first mounting position is arranged at the top end inside the steel outer sleeve, the second mounting position is communicated with one end of the first mounting position away from the top end of the steel outer sleeve, and the clamping shoulder is arranged at one end of the second mounting position away from the first mounting position.

[0023] The inner wall of the first mounting position is matched with the outer wall of the conical ceramic body, and the inner wall of the second mounting position is matched with the outer wall of the cylindrical ceramic body.

[0024] The clamping shoulder is matched with the clamping end.

[0025] Further, as a preferred, the conical sleeve comprises: a cylindrical part, a conical part and a mounting hole;

[0026] One end of the conical part is connected with the guide sleeve, and the other end is connected with the cylindrical part, the mounting hole is arranged in the conical part and the cylindrical part, and the conical sleeve is sleeved on the outer wall of the guide part through the mounting hole;

[0027] The outer wall of the conical part is matched with the inner wall of the conical ceramic body.

[0028] Further, as a preferred, the guide sleeve comprises: a sleeve body, an empty block ring groove and a sleeve hole;

[0029] The sleeve hole is arranged in the sleeve body, the sleeve body is sleeved on the outer wall of the guide part through the sleeve hole, the outer wall of the sleeve body is provided with the empty block ring groove, and the guide member is arranged in the empty block ring groove;

[0030] The connecting position of the first valve core ceramic and the second valve core ceramic is matched with the position of the empty block ring groove.

[0031] Further, as a preferred, the guide member comprises: a block ring, a containing cavity, a guide ring, a mounting plate and an aggregation strip;

[0032] The block ring is arranged at the bottom end of the empty block ring groove and forms the containing cavity with the sleeve body, the top end of the empty block ring groove is provided with the guide ring with a curved surface, a plurality of arc-shaped mounting plates are circumferentially arranged on the curved surface of the guide ring, and the aggregation strip is arranged on the side of each mounting plate away from the guide ring;

[0033] One end of the aggregation strip is flush with the end of the mounting plate close to the block ring, and the other end is located at the middle position of the mounting plate.

[0034] The aggregation strip is provided with an aggregation tip.

[0035] Compared with the prior art, the adjusting valve ceramic valve core structure has the following beneficial effects:

[0036] The advantage one is that the ceramic is selected to replace the steel inner part, ceramic glue is adopted for adhesion, and other combination modes of ceramic and steel parts, such as hot embedding, are replaced.

[0037] The advantage two is that the positioning and guiding assembly is combined with the two installation position limit of the steel part sleeve through the precise cooperation of the guiding sleeve, the conical sleeve and the connecting shaft, a multiple coaxial positioning system is formed, the stop opening cooperation of the first valve core ceramic and the second valve core ceramic further strengthens the positioning precision, the axial line of the steel part sleeve is always coincident, the ceramic glue adhesion layer thickness is uniformly avoided in the adhesion process due to the part deviation, and the stability of adhesion is guaranteed from the root.

[0038] The advantage three is that the pressure transmission path is used for the pressure tight guiding assembly to apply uniform axial pressure to the first valve core ceramic and the second valve core ceramic, the adhesion layer is twice strengthened and homogenized.

[0039] The advantage four is that the guiding of different flow paths is adopted for the ceramic glue overflowed in different flow modes, the overflowed ceramic glue can be ensured to enter the containing cavity for temporary storage, and the remaining parts are not interfered. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 It is a structure schematic view of a ceramic valve core of a regulating valve;

[0041] Figure 2 It is a structure schematic view of a ceramic valve core of a regulating valve;

[0042] Figure 3 It is a structure schematic view of a ceramic valve core of a regulating valve;

[0043] Figure 4 It is a structure schematic view of a ceramic valve core of a regulating valve;

[0044] Figure 5 It is a structure schematic view of a ceramic valve core of a regulating valve;

[0045] Figure 6 It is a structure schematic view of a ceramic valve core of a regulating valve;

[0046] Figure 7 It is a kind of adjusting valve ceramic valve core structure pressure nut structure schematic view;

[0047] Figure 8 It is a kind of adjusting valve ceramic valve core structure steel piece cover structure schematic view;

[0048] Figure 9 It is a kind of adjusting valve ceramic valve core structure conical cover structure schematic view;

[0049] Figure 10 It is a kind of adjusting valve ceramic valve core structure guide cover structure schematic view;

[0050] Figure 11 It is a kind of adjusting valve ceramic valve core structure guide structure schematic view;

[0051] Figure 12 It is a kind of adjusting valve ceramic valve core structure aggregation strip structure schematic view;

[0052] In the figure: 1, support assembly;11, base;12, seat hole;13, stop mouth part;14, connecting shaft;141, first mounting head;142, second mounting head;143, connecting part;144, guide part;145, shaft shoulder;2, positioning guide assembly;21, guide cover;211, cover body;212, empty notch;213, cover hole;22, conical cover;221, cylindrical part;222, conical part;223, mounting hole;23, steel piece cover;231, second mounting position;232, first mounting position;233, clamping shoulder;3, compression guide assembly;31, cushion block;32, pressing plate;33, compression nut;4, first valve core ceramic;41, conical ceramic body;42, protruding block;5, second valve core ceramic;51, cylindrical ceramic body;52, recessed block;53, clamping end;6, ceramic glue;7, guide;71, stop ring;72, containing cavity;73, guide ring;74, mounting plate;75, aggregation strip;751, aggregation tip. DETAILED DESCRIPTION

[0053] Please refer to Figures 1-12 The utility model provides a kind of adjusting valve ceramic valve core structure, it include: support assembly 1, positioning guide assembly 2, compression guide assembly 3, first valve core ceramic 4, second valve core ceramic 5 and ceramic glue 6;

[0054] Among them, positioning guide assembly 2 is provided on support assembly 1, first valve core ceramic 4 and second valve core ceramic 5 are respectively provided between positioning guide assembly 2 and support assembly 1, and compression guide assembly 3 is provided at the end of positioning guide assembly 2 away from support assembly 1;

[0055] The outer wall of the first valve core ceramic 4 and the outer wall of the second valve core ceramic 5 are connected with the positioning and guiding assembly 2 through the ceramic glue 6.

[0056] In the embodiment, the metal parts of the supporting assembly 1, the positioning and guiding assembly 2 and the pressing and guiding assembly 3 need to be quenched and tempered, and the surface rust treatment is performed to ensure that the assembly surface of each part is free of impurities.

[0057] The first valve core ceramic 4 comprises a conical ceramic body 41 and a protruding block 42.

[0058] The first valve core ceramic 4 is the conical ceramic body 41, and the conical ceramic body 41 is provided with the protruding block 42 at one end close to the second valve core ceramic 5.

[0059] The second valve core ceramic 5 comprises a cylindrical ceramic body 51, a recessed block 52 and a clamping end 53.

[0060] The second valve core ceramic 5 is the cylindrical ceramic body 51, the cylindrical ceramic body 51 is provided with the recessed block 52 at one end close to the first valve core ceramic 4, and the cylindrical ceramic body 51 is provided with the clamping end 53 at one end away from the first valve core ceramic 4.

[0061] As a preferred embodiment, please refer to Figure 1 As shown in the figure, the ceramic glue 6 needs to be selected as a high-temperature ceramic glue 6 meeting the requirements. In order to ensure the bonding strength of the ceramic glue 6, the components need to be weighed and mixed according to the mixing ratio in the product instruction manual. After mixing, the mixture is filled in a clean container and fully stirred with a stirring rod. When applying, less is taken and used. A scraper is used to dip the ceramic glue 6, and a continuous coating layer is applied to the outer wall of the conical ceramic body 41 and the cylindrical ceramic body 51 to form a bonding layer. Then, the bonding layer is trimmed to make the surface basically flat, and the first valve core ceramic 4 and the second valve core ceramic 5 are installed in place. Finally, the first valve core ceramic 4 and the second valve core ceramic 5 are secondarily bonded by the positioning and guiding assembly 2 and the pressing and guiding assembly 3, so that the bonding layer is stable, reliable and uniform.

[0062] Further, the protruding block 42 and the recessed block 52 are connected in a stop opening manner.

[0063] In the embodiment, please refer to Figure 2 As shown in the figure, the protruding block 42 is a stepped stop opening, the recessed block 52 is a stop opening groove matched with the protruding block 42, and the two are connected in a stop opening manner.

[0064] Further, the supporting assembly 1 comprises a base 11, a seat hole 12, a stop opening part 13 and a connecting shaft 14.

[0065] The base 11 is provided with the seat hole 12, the seat hole 12 is provided with the stop opening part 13, and the connecting shaft 14 is threadedly connected with the seat hole 12.

[0066] Further, the connecting shaft 14 comprises a first mounting head 141, a second mounting head 142, a connecting part 143, a guide part 144 and a shaft shoulder 145;

[0067] The first mounting head 141 is threadedly connected with the seat hole 12, the end of the first mounting head 141 away from the seat hole 12 is connected with the guide part 144 through the connecting part 143, the end of the guide part 144 away from the connecting part 143 is provided with the second mounting head 142, and the connecting part 143 is provided with the shaft shoulder 145 at the connection with the guide part 144.

[0068] In the embodiment, as shown in Figure 1 、 Figure 3 and Figure 4 , the inner wall of the seat hole 12 is provided with internal threads, and the outer walls of the first mounting head 141 and the second mounting head 142 are provided with external threads. After the threads are machined, the thread accuracy needs to be detected by using a thread ring gauge to ensure that the requirements are met.

[0069] As a preferred embodiment, the staff needs to fix the base 11 on a horizontal work platform, ensure that the base 11 completely matches the tabletop of the horizontal work platform, and correct whether the levelness of the base 11 meets the requirements by using a level. If the requirements are met, a small amount of high-temperature lubricating grease is applied to the external threads of the first mounting head 141 of the connecting shaft 14 to reduce the friction when the threads are connected. Then, the first mounting head 141 of the connecting shaft 14 is screwed into the seat hole 12 on the base 11 by using a torque wrench, and the installation of the connecting shaft 14 is completed. After the connecting shaft 14 is tightened, whether the radial runout of the connecting shaft 14 meets the requirements needs to be detected by using a dial indicator, and if the requirements are not met, the connecting shaft 14 needs to be removed and reinstalled.

[0070] It should be noted that the connecting shaft 14 is a rigid integrated structure composed of the first mounting head 141, the connecting part 143, the guide part 144 and the second mounting head 142, and the shaft shoulder 145 is machined thereon.

[0071] As a preferred embodiment, the connecting shaft 14 is threadedly connected with the base 11 and cooperates with the auxiliary function of the stop part 13, which can not only ensure good integrity but also realize quick disassembly, and is convenient and fast to use. A larger size base 11 is selected to enhance the rigidity of the overall structure to ensure the reliability and stability during use. It should be noted that a positioning stop hole (not shown in the figure) needs to be machined on the base 11, and the size tolerance of the hole cooperates with the size tolerance of the external circle of the first mounting head 141 to improve the assembly accuracy and ensure that the connecting shaft 14 is accurately positioned in the base 11 and meets the perpendicularity requirements.

[0072] Further, the positioning and guiding assembly 2 comprises a guide sleeve 21, a conical sleeve 22 and a steel outer sleeve 23;

[0073] The steel sleeve 23 is arranged on the base 11 and covers the connecting shaft 14, the guide sleeve 21 covers the outer wall of the guide part 144, and one end of the guide sleeve 21 is connected with the shaft shoulder 145, and the other end is connected with the conical sleeve 22 arranged on the outer wall of the guide part 144.

[0074] In the embodiment, as shown in Figure 1 , Figure 8 , Figure 9 and Figure 10 , the worker needs to first place the steel sleeve 23 on the base 11, and ensure that the axis of the steel sleeve 23 coincides with the axis of the seat hole 12 through scribing positioning, and the coincidence error needs to meet the requirements, and then temporarily fix the steel sleeve 23. Subsequently, the guide sleeve 21 is sleeved from the second mounting head 142 of the connecting shaft 14, and is moved along the guide part 144 to the position where the end face of the shaft shoulder 145 is attached, and the end face of the shaft shoulder 145 is used to support the guide sleeve 21, and a thin layer of high-temperature lubricating grease is applied on the end face of the shaft shoulder 145 during assembly, and the end face of the guide sleeve 21 is attached to the end face of the shaft shoulder 145, and it is ensured that there is no gap between the attached surfaces, and the radial runout of the outer wall of the guide sleeve 21 is detected by using a dial indicator, and the error needs to meet the requirements. Secondly, the conical sleeve 22 is sleeved from the second mounting head 142 of the connecting shaft 14, and is moved to the end face of the guide sleeve 21, and after being attached, the conical sleeve 22 is rotated by hand, and it is ensured that the rotation is smooth and there is no jamming, and the radial runout of the outer wall of the conical part 222 of the conical sleeve 22 is detected by using a dial indicator, and the error needs to meet the requirements. Finally, the temporary fixing of the steel sleeve 23 is removed, the steel sleeve 23 is fixedly connected with the base 11 through bolts, and after being fixed, the radial runout of the guide sleeve 21 and the conical sleeve 22 is detected again, and it is ensured that the requirements are still met.

[0075] Further, the compression guide assembly 3 comprises a pad 31, a pressing plate 32 and a compression nut 33.

[0076] The pad 31 is sleeved on the outer wall of the second mounting head 142 and connected with one end of the conical sleeve 22 away from the guide sleeve 21, the pressing plate 32 is sleeved on the outer wall of the second mounting head 142 and connected with one end of the pad 31 away from the conical sleeve 22, and the end of the pressing plate 32 away from the pad 31 abuts against the compression nut 33 arranged on the outer wall of the second mounting head 142.

[0077] In the embodiment, as shown in Figure 1 , Figure 5 , Figure 6 and Figure 7 , the pad 31 can be processed by using a hard alloy material, and the parallelism error of the two end faces needs to meet the requirements. The pressing plate 32 is made of a non-metal material, and a soft material is selected to protect the first valve core ceramic 4 and the second valve core ceramic 5 from being damaged.

[0078] As a preferred embodiment, the staff needs to first put the pad 31 into the second mounting head 142 of the connecting shaft 14, make one end of the pad 31 abut the end face of the cylindrical part 221 of the conical sleeve 22, then put the pressing plate 32 into the second mounting head 142 and press the end of the pad 31 away from the cylindrical part 221, and finally screw the compression nut 33 into the second mounting head 142 and complete the threaded connection. The torque wrench is used to tighten the compression nut 33, the initial stage is pre-tightened according to the initial torque, and the subsequent stage is gradually increased in three times, and after each time of increasing the torque, the pressure is uniformly transmitted after being placed for 5 min. Finally, the secondary reinforced bonding between the outer walls of the conical ceramic body 41 and the cylindrical ceramic body 51 and the inner wall of the steel sleeve 23 is realized.

[0079] It should be noted that the utility model sets up a pressure sensor between the pressing plate 32 and the compression nut 33, which monitors the pressure value in real time, ensures that the final pressure is stable, avoids damage to the first valve core ceramic 4 and the second valve core ceramic 5 caused by excessive pressure, or uneven thickness of the bonding layer caused by insufficient pressure. When the compression nut 33 is pre-tightened, the force acting on the pressing plate 32 is first transmitted to the pad 31 and then to the conical sleeve 22 through the pad 31, and the first valve core ceramic 4 is driven to move downward due to the cooperation of the conical surface of the conical part 222, thereby reducing the gap between the outer walls of the first valve core ceramic 4 and the second valve core ceramic 5 and the inner wall of the steel sleeve 23, and the required gap requirement is achieved.

[0080] Further, the steel sleeve 23 comprises a second mounting position 231, a first mounting position 232 and a clamping shoulder 233.

[0081] The first mounting position 232 is arranged at the top end of the steel sleeve 23, and the second mounting position 231 is connected to the end of the first mounting position 232 away from the top end of the steel sleeve 23, and the clamping shoulder 233 is arranged at the end of the second mounting position 231 away from the first mounting position 232.

[0082] The inner wall of the first mounting position 232 is matched with the outer wall of the conical ceramic body 41, and the inner wall of the second mounting position 231 is matched with the outer wall of the cylindrical ceramic body 51.

[0083] The clamping shoulder 233 is matched with the clamping end 53.

[0084] In this embodiment, the first mounting position 232 is processed as a conical hole with the same taper as the conical ceramic body 41, the second mounting position 231 is processed as a cylindrical hole matched with the cylindrical ceramic body 51, and the clamping shoulder 233 is processed as an annular end face, and the parallelism error between the clamping shoulder 233 and the bottom surface of the steel sleeve 23 needs to meet the requirements.

[0085] As a preferred embodiment, the first valve core ceramic 4 and the second valve core ceramic 5 are installed as follows: first, the cylindrical ceramic body 51 of the second valve core ceramic 5 is installed into the second installation position 231, and is slowly pushed into the abutting position until the abutting end 53 abuts against the abutting shoulder 233, and a dial gauge is used to detect the gap between the outer wall of the cylindrical ceramic body 51 and the inner wall of the second installation position 231, to ensure that the circumferential direction gap is uniform. Subsequently, the conical ceramic body 41 of the first valve core ceramic 4 is installed into the first installation position 232 from the upper end of the steel outer sleeve 23, and the protrusion 42 is matched with the recess 52 stop, and a dial gauge is used to detect the gap between the outer wall of the conical ceramic body 41 and the inner wall of the first installation position 232, to ensure that the circumferential direction gap is uniform.

[0086] Further, the conical sleeve 22 comprises a cylindrical portion 221, a conical portion 222, and an installation hole 223;

[0087] The conical portion 222 is connected to the guide sleeve 21 at one end and connected to the cylindrical portion 221 at the other end, and the conical portion 222 and the cylindrical portion 221 are provided with the installation hole 223, and the conical sleeve 22 is sleeved on the outer wall of the guide portion 144 through the installation hole 223;

[0088] The outer wall of the conical portion 222 is matched with the inner wall of the conical ceramic body 41.

[0089] In this embodiment, the installation hole 223 of the conical sleeve 22 is moderately gap-fitted with the outer circle of the connecting shaft 14, so that when the pressing plate 32 is extruded against the conical sleeve 22 by external force, the position will not be deviated, the adhesive strength of the ceramic adhesive 6 bonding layer is guaranteed, and the thickness of the bonding layer is uniform and consistent.

[0090] As a preferred embodiment, the positioning and guiding assembly 2 is precisely fitted with the connecting shaft 14 through the guide sleeve 21 and the conical sleeve 22, and is limited by the two installation positions of the steel outer sleeve 23, to form a multiple coaxial positioning system. The guide sleeve 21 is axially positioned by means of the shaft shoulder 145, and the conical sleeve 22 is matched with the inner wall of the first valve core ceramic 4 through the taper surface of the conical portion 222, and the two cooperatively limit the radial movement of the first valve core ceramic 4 and the second valve core ceramic 5. At the same time, the stop of the first valve core ceramic 4 and the second valve core ceramic 5 further strengthens the positioning accuracy, ensures that the axis of the steel outer sleeve 23 always coincides, and effectively avoids the uneven thickness of the ceramic adhesive 6 bonding layer caused by the deviation of the parts during the bonding process, to fundamentally guarantee the stability of the bonding.

[0091] As a preferred embodiment, the compression guiding assembly 3 applies uniform axial pressure to the first valve core ceramic 4 and the second valve core ceramic 5 through the pressure transmission path, realizing secondary strengthening and uniformization of the adhesive layer. Under the action of pressure, the gap between the first valve core ceramic 4 and the second valve core ceramic 5 and the steel outer sleeve 23 is reduced to a preset value, which not only expels the bubbles in the ceramic adhesive 6 adhesive layer and improves the adhesion density, but also promotes the orderly storage of excess ceramic adhesive 6 through the guide 7. At the same time, the self-centering feature of the conical sleeve 22 ensures uniform distribution of pressure along the axis, so that the ceramic adhesive 6 forms an adhesive layer with uniform thickness and tight fit between the first valve core ceramic 4 and the second valve core ceramic 5 and the steel outer sleeve 23, significantly improving the adhesion reliability and durability.

[0092] Further, the guide sleeve 21 includes: a sleeve body 211, an empty block ring groove 212, and a sleeve hole 213;

[0093] Wherein, the sleeve hole 213 is opened in the sleeve body 211, the sleeve body 211 is sleeved on the outer wall of the guide part 144 through the sleeve hole 213, the outer wall of the sleeve body 211 is provided with the empty block ring groove 212, and the guide 7 is arranged in the empty block ring groove 212;

[0094] The first valve core ceramic 4 and the second valve core ceramic 5 are correspondingly positioned at the empty block ring groove 212.

[0095] Further, the guide 7 includes: a block ring 71, a containing cavity 72, a guide ring 73, a mounting plate 74, and an accumulation strip 75;

[0096] Wherein, the block ring 71 is arranged at the bottom end of the empty block ring groove 212 and forms the containing cavity 72 with the sleeve body 211, the top end of the empty block ring groove 212 is provided with the guide ring 73 with a curved surface, a plurality of arc-shaped mounting plates 74 are circumferentially arranged on the curved surface of the guide ring 73, and each mounting plate 74 is provided with the accumulation strip 75 away from one end of the guide ring 73;

[0097] One end of the accumulation strip 75 is flush with one end of the mounting plate 74 close to the block ring 71, and the other end is located at the middle position of the mounting plate 74;

[0098] The accumulation strip 75 is provided with an accumulation tip 751.

[0099] In this embodiment, please refer to Figure 10 , Figure 11 and Figure 12 When the compression guiding assembly 3 performs secondary strengthening and adhesion on the first valve core ceramic 4 and the second valve core ceramic 5, the ceramic adhesive 6 between the outer wall of the first valve core ceramic 4 and the second valve core ceramic 5 and the inner wall of the steel outer sleeve 23 will overflow from the joint between them. The overflowed ceramic adhesive 6 will flow in two ways, one is directly into the containing cavity 72, and the other is on the curved surface of the guide ring 73.

[0100] As the preferred embodiment, specifically: since the first valve core ceramic 4 and the second valve core ceramic 5 are matched and connected with the position corresponding to the blocking ring groove 212, the ceramic glue 6 of the first flow mode will directly enter the storage cavity 72 for temporary storage. The ceramic glue 6 of the second flow mode flows to the mounting plate 74 under the guidance of the arc surface of the guide ring 73, and then flows to the gathering strip 75 along the mounting plate 74, and finally converges to the gathering tip 751 along the two sides of the gathering strip 75, and drops into the storage cavity 72 for temporary storage. Subsequently, only the guide sleeve 21 needs to be taken out, and the remaining ceramic glue 6 in the storage cavity 72 is cleaned by using a scraper.

[0101] The utility model discloses the guidance of different flow paths for the ceramic glue 6 overflowed in different flow modes, which can ensure that the ceramic glue 6 overflowed is all temporarily stored in the storage cavity 72 and does not interfere with the remaining parts.

[0102] It should be noted that one end of the gathering strip 75 is flush with one end of the mounting plate 74 close to the blocking ring 71, and the other end is located at the middle position of the mounting plate 74. Therefore, the ceramic glue 6 flowing on the mounting plate 74 will not be directly gathered, but will be gathered after flowing on the mounting plate 74 for a period of time. When the gathering starts, the ceramic glue 6 is already located at the upper position inside the storage cavity 72. Therefore, the ceramic glue 6 under the gathering effect of the gathering tip 751 will all drop into the storage cavity 72, and no leakage occurs.

[0103] In specific implementation, first, the ceramic glue 6 with good bonding performance is selected to ensure good bonding strength. Second, the ceramic glue 6 is uniformly coated on the outer walls of the first valve core ceramic 4 and the second valve core ceramic 5 by using the external surface scraping method, and the surface thickness needs to be basically uniform. The positioning and guiding assembly 2 and the pressing and guiding assembly 3 ensure the uniformity of the bonding layer thickness of the ceramic glue 6 and the compactness of the bonding layer of the ceramic glue 6, thereby ensuring the stability and reliability of the bonding strength.

[0104] The above is only a preferred specific embodiment of the utility model, but the protection scope of the utility model is not limited to this. Any skilled person in the technical field can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A trim structure for a ceramic valve in a control valve, characterized by: Include: Supporting assembly (1), positioning guide assembly (2), compression guide assembly (3), first valve core ceramic (4), second valve core ceramic (5) and ceramic glue (6); Wherein, the supporting assembly (1) is provided with the positioning guide assembly (2), the first valve core ceramic (4) and the second valve core ceramic (5) are respectively arranged between the positioning guide assembly (2) and the supporting assembly (1), one end of the positioning guide assembly (2) away from the supporting assembly (1) is provided with the compression guide assembly (3); The outer wall of the first valve core ceramic (4) and the second valve core ceramic (5) is connected with the positioning guide assembly (2) through the ceramic glue (6), and the first valve core ceramic (4) and the second valve core ceramic (5) are connected in cooperation; The first valve core ceramic (4) comprises a tapered ceramic body (41) and a lug (42); Wherein, the first valve core ceramic (4) is the tapered ceramic body (41), one end of the tapered ceramic body (41) close to the second valve core ceramic (5) is provided with the lug (42); The second valve core ceramic (5) comprises a cylindrical ceramic body (51), a recessed block (52) and a clamping end (53); Wherein, the second valve core ceramic (5) is the cylindrical ceramic body (51), one end of the cylindrical ceramic body (51) close to the first valve core ceramic (4) is provided with the recessed block (52), and one end of the cylindrical ceramic body (51) away from the first valve core ceramic (4) is provided with the clamping end (53).

2. A trim valve ceramic valve trim structure as defined in claim 1, wherein: The lug (42) and the recessed block (52) are connected in cooperation.

3. The trim valve ceramic valve trim structure of claim 1, wherein: The supporting assembly (1) comprises a base (11), a seat hole (12), a stop portion (13) and a connecting shaft (14); Wherein, the base (11) is provided with the seat hole (12), the seat hole (12) is provided with the stop portion (13), and the connecting shaft (14) is threadedly connected with the seat hole (12).

4. A trim valve ceramic valve trim structure as defined in claim 3, wherein: The connecting shaft (14) comprises a first mounting head (141), a second mounting head (142), a connecting portion (143), a guide portion (144) and a shaft shoulder (145); Wherein, the first mounting head (141) is threadedly connected with the seat hole (12), one end of the first mounting head (141) away from the seat hole (12) is connected with the guide portion (144) through the connecting portion (143), one end of the guide portion (144) away from the connecting portion (143) is provided with the second mounting head (142), and the connecting portion (143) and the guide portion (144) are provided with the shaft shoulder (145).

5. A trim valve ceramic valve trim structure as defined in claim 4, wherein: The positioning guide assembly (2) comprises a guide sleeve (21), a tapered sleeve (22) and a steel outer sleeve (23); The steel sleeve (23) is arranged on the base (11) and sleeves the connecting shaft (14) inside, the guide sleeve (21) sleeves the outer wall of the guide part (144), and one end of the guide sleeve (21) is connected with the shaft shoulder (145), and the other end is connected with the tapered sleeve (22) sleeved on the outer wall of the guide part (144).

6. A trim valve ceramic valve trim structure as defined in claim 5, wherein: The compression guide assembly (3) comprises a cushion block (31), a pressing plate (32) and a compression nut (33). The cushion block (31) is sleeved on the outer wall of the second mounting head (142) and connected with one end of the tapered sleeve (22) away from the guide sleeve (21), the pressing plate (32) is sleeved on the outer wall of the second mounting head (142) and connected with one end of the cushion block (31) away from the tapered sleeve (22), and the end of the pressing plate (32) away from the cushion block (31) abuts against the compression nut (33) arranged on the outer wall of the second mounting head (142).

7. The trim valve ceramic valve trim structure of claim 5, wherein: The steel sleeve (23) comprises a second mounting position (231), a first mounting position (232) and a clamping shoulder (233). The first mounting position (232) is arranged at the top end of the steel sleeve (23), one end of the first mounting position (232) away from the top end of the steel sleeve (23) is communicated with the second mounting position (231), and the second mounting position (231) is provided with the clamping shoulder (233) at one end away from the first mounting position (232). The inner wall of the first mounting position (232) is matched with the outer wall of the tapered ceramic body (41), and the inner wall of the second mounting position (231) is matched with the outer wall of the cylindrical ceramic body (51). The clamping shoulder (233) is matched with the clamping end (53).

8. The trim valve ceramic valve trim structure of claim 5, wherein: The tapered sleeve (22) comprises a cylindrical part (221), a tapered part (222) and a mounting hole (223). One end of the tapered part (222) is connected with the guide sleeve (21), the other end is connected with the cylindrical part (221), the mounting hole (223) is arranged in the tapered part (222) and the cylindrical part (221), and the tapered sleeve (22) is sleeved on the outer wall of the guide part (144) through the mounting hole (223). The outer wall of the tapered part (222) is matched with the inner wall of the tapered ceramic body (41).

9. The trim valve ceramic valve trim structure of claim 5, wherein: The guide sleeve (21) comprises a sleeve body (211), an empty gear ring groove (212) and a sleeve hole (213). The sleeve hole (213) is arranged in the sleeve body (211), the sleeve body (211) is sleeved on the outer wall of the guide part (144) through the sleeve hole (213), the outer wall of the sleeve body (211) is provided with the empty gear ring groove (212), and the guide member (7) is arranged in the empty gear ring groove (212). The matched connection position of the first valve core ceramic (4) and the second valve core ceramic (5) corresponds to the position of the empty gear ring groove (212).

10. A trim valve ceramic valve trim structure as defined in claim 9, wherein: The guide (7) comprises a blocking ring (71), a containing cavity (72), a guide ring (73), a mounting plate (74) and an aggregation strip (75); The blocking ring (71) is arranged at the bottom end of the empty blocking ring groove (212) and forms the containing cavity (72) with the sleeve body (211), the top end of the empty blocking ring groove (212) is provided with the guide ring (73) with a curved surface, a plurality of arc-shaped mounting plates (74) are circumferentially arranged on the curved surface of the guide ring (73), and the side of each mounting plate (74) away from the guide ring (73) is provided with the aggregation strip (75); One end of the aggregation strip (75) is flush with one end of the mounting plate (74) close to the blocking ring (71), and the other end is located at the middle position of the mounting plate (74); The aggregation strip (75) is provided with an aggregation tip (751).

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