阅读说明：本技术 一种陶瓷密封三通阀 (Ceramic seal three-way valve ) 是由 孙龙 张云鹏 于 2020-06-16 设计创作，主要内容包括：本发明属于阀门技术领域,具体的说是一种陶瓷密封三通阀,包括主阀体、与主阀体的一端连通的主管道、与主阀体的一端连通的副管道；主管道与副管道靠近主阀体内壁的端面上设有陶瓷环；主管道与副管道之间的主阀体上贯穿有转轴,转轴位于主阀体外部的一端固连有手柄；转轴位于主阀体内部的一端通过摆杆固连有滑筒,滑筒内滑动连接有滑柱,滑柱靠近滑筒底部的一端设有一组弹簧,滑柱另一端固连有阀板；阀体内与阀板对应位置开设有弧形的滑槽,阀板在滑槽中随摆杆转动并切换阀门通断；滑槽靠近外缘位置开设有弧形的导槽,导槽内转动连接有一组辊轮,本发明通过辊轮支撑阀板,降低阀板转动阻力,提高三通阀的切换效率。(The invention belongs to the technical field of valves, and particularly relates to a ceramic sealing three-way valve which comprises a main valve body, a main pipeline communicated with one end of the main valve body and an auxiliary pipeline communicated with one end of the main valve body; the end surfaces of the main pipeline and the auxiliary pipeline close to the inner wall of the main valve body are provided with ceramic rings; a rotating shaft penetrates through the main valve body between the main pipeline and the auxiliary pipeline, and one end of the rotating shaft, which is positioned outside the main valve body, is fixedly connected with a handle; one end of the rotating shaft, which is positioned in the main valve body, is fixedly connected with a sliding cylinder through a swing rod, a sliding column is connected in the sliding cylinder in a sliding mode, one end, which is close to the bottom of the sliding cylinder, of the sliding column is provided with a group of springs, and the other end of the sliding column is fixedly connected with a valve plate; an arc-shaped sliding groove is formed in the valve body and corresponds to the valve plate, and the valve plate rotates along with the oscillating rod in the sliding groove and switches the on-off of the valve; the invention supports the valve plate through the roller, reduces the rotating resistance of the valve plate, and improves the switching efficiency of the three-way valve.)

1. A ceramic sealing three-way valve comprises a main valve body (1), a main pipeline (11) communicated with one end of the main valve body (1), and an auxiliary pipeline (12) communicated with one end of the main valve body (1); the main pipeline (11) and the main valve body (1) are positioned on the same straight line, and the central axis of the auxiliary pipeline (12) and the central axis of the main pipeline (11) form an acute angle; ceramic rings (13) are arranged on the end faces, close to the inner wall of the main valve body (1), of the main pipeline (11) and the auxiliary pipeline (12); a rotating shaft (14) penetrates through the main valve body (1) between the main pipeline (11) and the auxiliary pipeline (12), and the rotating shaft (14) penetrates through the main valve body (1) and is in rotary sealing connection with the main valve body (1); one end of the rotating shaft (14) positioned outside the main valve body (1) is fixedly connected with a handle (15); the method is characterized in that: one end of the rotating shaft (14) positioned in the main valve body (1) is fixedly connected with a sliding cylinder (17) through a swing rod (16), a sliding column (18) is connected in the sliding cylinder (17) in a sliding mode, one end, close to the bottom of the sliding cylinder (17), of the sliding column (18) is provided with a group of springs, and the other end of the sliding column (18) is fixedly connected with a valve plate (19); an arc-shaped sliding groove (2) is formed in the main valve body (1) and corresponds to the valve plate (19), and the valve plate (19) rotates along with the swing rod (16) in the sliding groove (2) and switches the on-off of the valve; arc-shaped guide slot (21) have been seted up to spout (2) near the outer fringe position, and guide slot (21) internal rotation is connected with a set of running roller (3), supports valve plate (19) through running roller (3), reduces valve plate (19) rotation resistance, improves the switching efficiency of three-way valve.

2. A ceramic sealed three-way valve according to claim 1, wherein: a first hole (22) communicated with the bottom of the sliding barrel (17) is formed in the sliding column (18); the periphery circumference equipartition has a set of No. two holes (23) that communicate with a hole (22) on valve plate (19), and the hindrance that reduces solid particle through No. two hole (23) blowout compressed air further improves the switching efficiency of three-way valve.

3. A ceramic sealed three-way valve according to claim 2, wherein: the height of the roller (3) close to the two ends of the guide groove (21) is lower than that of the roller (3) in the middle of the guide groove (21), so that the impact loss of the roller (3) to the edge of the valve plate (19) is reduced.

4. A ceramic sealed three-way valve according to claim 3, wherein: one side of the valve plate (19) close to the roller (3) is provided with an arc-shaped air bag (24) at a position corresponding to the guide groove (21), an opening (25) of the air bag (24) faces one side close to the auxiliary pipeline (12), compressed air is ejected after being extruded by the air bag (24), solid impurities near the ceramic ring (13) at the position of the auxiliary pipeline (12) are further reduced, and the sealing performance of the valve plate (19) is improved.

5. A ceramic sealed three-way valve according to claim 4, wherein: the roller (3) is fixed on the side wall of the guide groove (21) through a rotating pin (31), and the roller (3) is rotationally connected with the rotating pin (31); a cleaning roller (32) is rotatably connected to the rotating pin (31) on one side of the roller (3), and a felt ring (33) is arranged on the periphery of the cleaning roller (32); a first gear ring (34) is arranged on the inner periphery of the cleaning roller (32), and a first gear (35) is rotatably connected to the position, corresponding to the first gear ring (34), of the rotating pin (31) through a support; a second gear ring (36) is arranged on the inner periphery of the roller (3), and a second gear (37) is rotatably connected to the position, corresponding to the second gear ring (36), of the rotating pin (31) through a bracket; the first gear (35) is fixedly connected with the second gear (37), and the transmission ratio of the first gear ring (34) to the first gear (35) is smaller than that of the second gear ring (36) to the second gear (37), so that the rotating speed of the felt ring (33) is larger than that of the roller (3), and the cleaning efficiency of the sealing surface of the valve plate (19) is improved.

6. A ceramic sealed three-way valve according to claim 5, wherein: the junction of the main valve body (1) and the auxiliary pipeline (12) is provided with an arc-shaped part (26), the position, corresponding to the end face of the auxiliary pipeline (12), inside the main valve body (1) is fixedly connected with an air deflector (27), the opening, away from the auxiliary pipeline (12), of one side of the air deflector (27) is larger than the other side of the air deflector, the air deflector (27) is used for accelerating the flowing speed of particles at the bottom of the main valve body (1), and the switching efficiency of the three-way valve is further improved.

Technical Field

The invention belongs to the technical field of valves, and particularly relates to a ceramic sealing three-way valve.

Background

The conveying of fly ash (or other dry powder materials) in a thermal power plant mostly adopts a positive pressure pneumatic conveying system, and valves used in the positive pressure pneumatic conveying system have various forms, but most of the valves are gate valves in a double-gate form. The gate valve is provided with a pair of gate plates which are arranged in parallel, a spring is arranged between the two gate plates, each gate plate and a valve seat are tightly attached together by elastic force to form a sealing pair of the valve, a cylinder is connected with the gate plates through a connecting piece, an air lever (equivalent to a valve rod) for connecting the inside and the outside of the valve is sealed by adopting a flexible packing, and the cylinder drives the gate plates to linearly slide on a sealing surface of a cavity when moving as a piston so as to open and close the valve. However, due to the high hardness, fast flow rate and poor flow of the media being transported, the valve sealing surfaces used in such systems wear very quickly.

However, in the pneumatic conveying production of dry powder materials, a ceramic sealing valve with a plurality of outlet ends is needed to meet the requirement of distributing the dry powder materials in the production process and realize the purpose of conveying the materials to different places.

Disclosure of Invention

The invention provides a ceramic sealing three-way valve, which aims to make up the defects of the prior art and solve the problems that dry powder materials conveyed in the valve are high in hardness, high in flow speed and poor in fluidity, the materials are adhered to the inner wall of a main valve body, the friction resistance is increased when a valve plate rotates, and the valve is difficult to open and close.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a ceramic sealing three-way valve which comprises a main valve body, a main pipeline communicated with one end of the main valve body and an auxiliary pipeline communicated with one end of the main valve body; the main pipeline and the main valve body are positioned on the same straight line, and the central axis of the auxiliary pipeline and the central axis of the main pipeline form an acute angle; the end surfaces of the main pipeline and the auxiliary pipeline close to the inner wall of the main valve body are provided with ceramic rings; a rotating shaft penetrates through the main valve body between the main pipeline and the auxiliary pipeline and penetrates through the main valve body and is in rotary sealing connection with the main valve body; one end of the rotating shaft, which is positioned outside the main valve body, is fixedly connected with a handle; one end of the rotating shaft, which is positioned in the main valve body, is fixedly connected with a sliding cylinder through a swing rod, a sliding column is connected in the sliding cylinder in a sliding mode, one end, which is close to the bottom of the sliding cylinder, of the sliding column is provided with a group of springs, and the other end of the sliding column is fixedly connected with a valve plate; an arc-shaped sliding groove is formed in the main valve body and corresponds to the valve plate, and the valve plate rotates along with the oscillating rod in the sliding groove and switches the on-off of the valve; an arc-shaped guide groove is formed in the position, close to the outer edge, of the sliding groove, a group of rollers are rotatably connected in the guide groove, the valve plate is supported through the rollers, the rotating resistance of the valve plate is reduced, and the switching efficiency of the three-way valve is improved; when the valve plate is in operation, the rotating shaft and the oscillating bar are driven to rotate by rotating the handle, the valve plate is driven to rotate by the sliding cylinder and then is switched to the ceramic ring at the position of the auxiliary pipeline, so that the pipeline is switched, the dry powder-shaped material conveyed in the valve is high in hardness, high in flow speed and poor in fluidity, the material is adhered to the inner wall of the main valve body, the friction resistance of the valve plate during rotation is increased, the valve is difficult to open and close, the roller is supported during rotation of the valve plate around the rotating shaft by the roller in the guide groove, the sliding friction force between the valve plate and the ceramic ring as well as between the valve plate and the inner wall of the main valve body is reduced, the sliding friction is replaced by the rolling friction, the rotation resistance of the valve plate is reduced, the valve plate is separated from the roller after the valve plate is completely rotated to the position, the sliding column is pushed out of the, the sealing and the valve switching are completed, and the switching efficiency of the valve is further improved.

Preferably, a first hole communicated with the bottom of the sliding barrel is formed in the sliding column; a group of second holes communicated with the first holes are uniformly distributed on the periphery of the valve plate, compressed air is sprayed out through the second holes to reduce the obstruction of solid particles, and the switching efficiency of the three-way valve is further improved; when the valve plate moves to the position corresponding to the roller, the roller jacks up the valve plate by a certain height, so that the valve plate is separated from the ceramic ring, the valve plate drives the sliding column to slide towards the bottom of the sliding cylinder, compressed air is generated in the sliding cylinder, the compressed air is filled into the second hole through the first hole and then is sprayed out from the edge of the valve plate, solid impurities adhered to the edge of the valve plate are reduced, the ceramic ring is cleaned at the same time, residual impurities on the sealing surface of the ceramic ring are reduced, the sealing performance between the valve plate and the ceramic ring after rotation is further improved, the friction force of the impurities when the valve plate rotates is reduced, the sealing performance of the valve is further improved, and the switching efficiency of the three-.

Preferably, the height of the rollers close to the two ends of the guide groove is lower than that of the rollers in the middle of the guide groove, so that the impact loss of the rollers to the edge of the valve plate is reduced; the roller height through being close to the guide slot both ends is less than the roller height at guide slot middle part for the valve plate is mild by the roller wheel prop up and put down, reduces the impact between valve plate and the roller wheel, and then reduces the roller wheel and collides with the valve plate edge, reduces the damage of the sealed face of valve plate, further increases the leakproofness and the life of three-way valve.

Preferably, an arc-shaped air bag is arranged at the position, corresponding to the guide groove, of one side, close to the roller, of the valve plate, an opening of the air bag faces to one side, close to the auxiliary pipeline, compressed air is sprayed out after the air bag is extruded, solid impurities near the ceramic ring at the position of the auxiliary pipeline are further reduced, and the sealing performance of the valve plate is improved; when the air bag rotates along with the valve plate and moves to the position corresponding to the roller wheel, the air bag is extruded through the roller wheel, compressed air is formed after the air in the air bag is extruded, the compressed air is stored in the air bag, after the air bag continuously rotates along with the valve plate, the roller wheel relaxes the extrusion and sealing effects on the open hole, the compressed air in the air bag is sprayed out through the open hole, solid particles remained at the bottom of one end, close to the main valve body, of the auxiliary pipeline are cleaned, the ceramic ring corresponding to the auxiliary pipeline is completely exposed, the burying of the solid particles on the ceramic ring is reduced, the valve plate is completely in place and is in sealing connection with the ceramic ring, the internal leakage of the three-way valve is further reduced, and the.

Preferably, the roller is fixed on the side wall of the guide groove through a rotating pin, and the roller is rotationally connected with the rotating pin; a cleaning roller is rotatably connected to the rotating pin on one side of the roller wheel, and a felt ring is arranged on the periphery of the cleaning roller; a first gear ring is arranged on the inner periphery of the cleaning roller, and a first gear is rotatably connected to the position, corresponding to the first gear ring, of the rotating pin through a support; a second gear ring is arranged on the inner periphery of the roller wheel, and a second gear is rotatably connected to the position, corresponding to the second gear ring, of the rotating pin through a support; the first gear is fixedly connected with the second gear, and the transmission ratio of the first gear ring to the first gear is smaller than that of the second gear ring to the second gear, so that the rotating speed of the felt ring is greater than that of the roller, and the cleaning efficiency of the sealing surface of the valve plate is improved; when the valve plate contacts the roller and continues to rotate, the valve plate drives the roller to rotate, because the transmission ratio of the first gear ring and the first gear is smaller than the transmission ratio of the second gear ring and the second gear, and then the rotating speed of the cleaning roller is greater than that of the roller, and further the felt ring slides relative to the valve plate, so that the felt ring can continuously clean the sealing surface of the valve plate, the cleaning of the sealing surface of the valve plate close to one side of the ceramic ring is ensured, the sealing performance between the valve plate and the ceramic ring is further improved, the inner leakage of the three-way valve is further reduced, and the normal work of the three-.

Preferably, an arc-shaped part is arranged at the joint of the main valve body and the auxiliary pipeline, a wind deflector is fixedly connected with the corresponding position of the end face of the auxiliary pipeline inside the main valve body, the opening of the wind deflector, which is far away from one side of the auxiliary pipeline, is larger than the opening of the wind deflector, and the wind deflector is used for accelerating the flow speed of particles at the bottom of the main valve body, so that the switching efficiency of the three-way valve is further improved; through curved aviation baffle, increase the air flow rate of junction between the main valve body bottom and the auxiliary line, the cooperation main valve body is equipped with arc portion with the junction of auxiliary line, and then makes the sedimentary solid particle of arc portion department discharge fast, reduces the burial of solid particle to ceramic ring, and then further guarantees the leakproofness between valve plate and the ceramic ring, guarantees simultaneously that the valve plate rotates and targets in place, further reduces the interior hourglass of three-way valve, guarantees the normal work of three-way valve.

The invention has the following beneficial effects:

1. according to the ceramic sealing three-way valve, the roller provides support in the rotating process of the valve plate around the rotating shaft, so that the sliding friction force between the valve plate and the ceramic ring and between the valve plate and the inner wall of the main valve body is reduced, the sliding friction is replaced by the rolling friction, the rotating resistance of the valve plate is reduced, and the switching efficiency of the valve is improved.

2. According to the ceramic sealing three-way valve, when the valve plate contacts the roller and continuously rotates, the valve plate drives the roller to rotate, and the transmission ratio of the first gear ring to the first gear is smaller than that of the second gear ring to the second gear, so that the rotating speed of the cleaning roller is greater than that of the roller, the felt ring slides relative to the valve plate, the sealing surface of the valve plate is continuously cleaned by the felt ring, the cleaning of the sealing surface of the valve plate close to one side of the ceramic ring is guaranteed, the sealing performance between the valve plate and the ceramic ring is further improved, the internal leakage of the three-way valve is further reduced, and the normal work of the three-way valve is guaranteed.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is an isometric view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 3 at A;

FIG. 5 is a perspective view of a valve plate according to the present invention;

FIG. 6 is a sectional view of a roller in the present invention;

in the figure: the main valve body 1, a main pipe 11, an auxiliary pipe 12, a ceramic ring 13, a rotating shaft 14, a handle 15, a swing rod 16, a sliding cylinder 17, a sliding column 18, a valve plate 19, a sliding chute 2, a guide groove 21, a roller 3, a first hole 22, a second hole 23, an air bag 24, an opening 25, a rotating pin 31, a cleaning roller 32, a felt ring 33, a first gear ring 34, a first gear 35, a second gear ring 36, a second gear 37, an arc-shaped part 26 and an air deflector 27.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 6, the ceramic sealing three-way valve of the present invention comprises a main valve body 1, a main pipe 11 communicated with one end of the main valve body 1, and a sub-pipe 12 communicated with one end of the main valve body 1; the main pipeline 11 and the main valve body 1 are positioned on the same straight line, and the central axis of the auxiliary pipeline 12 and the central axis of the main pipeline 11 form an acute angle; the end surfaces of the main pipeline 11 and the auxiliary pipeline 12 close to the inner wall of the main valve body 1 are provided with ceramic rings 13; a rotating shaft 14 penetrates through the main valve body 1 between the main pipeline 11 and the auxiliary pipeline 12, and the rotating shaft 14 penetrates through the main valve body 1 and is in rotary sealing connection with the main valve body 1; a handle 15 is fixedly connected to one end of the rotating shaft 14, which is positioned outside the main valve body 1; one end of the rotating shaft 14, which is positioned inside the main valve body 1, is fixedly connected with a sliding cylinder 17 through a swing rod 16, a sliding column 18 is connected in the sliding cylinder 17 in a sliding manner, one end of the sliding column 18, which is close to the bottom of the sliding cylinder 17, is provided with a group of springs, and the other end of the sliding column 18 is fixedly connected with a valve plate 19; an arc-shaped chute 2 is arranged in the main valve body 1 corresponding to the valve plate 19, and the valve plate 19 rotates along with the swing rod 16 in the chute 2 and switches the on-off of the valve; an arc-shaped guide groove 21 is formed in the position, close to the outer edge, of the sliding groove 2, a group of rollers 3 are rotatably connected in the guide groove 21, the valve plate 19 is supported through the rollers 3, the rotating resistance of the valve plate 19 is reduced, and the switching efficiency of the three-way valve is improved; when the valve works, the rotating shaft 14 and the swing rod 16 are driven to rotate by rotating the handle 15, the valve plate 19 is driven to rotate by the sliding cylinder 17 and then is switched to the ceramic ring 13 at the position of the auxiliary pipeline 12, so that the pipelines are switched, the dry powder materials conveyed in the valve are high in hardness, high in flow speed and poor in fluidity, the materials are adhered to the inner wall of the main valve body 1, the friction resistance when the valve plate 19 rotates is increased, so that the valve is difficult to open and close, at the moment, the roller 3 is supported in the rotating process of the valve plate 19 around the rotating shaft 14 through the roller 3 rotatably connected in the guide groove 21, so that the sliding friction force between the valve plate 19 and the ceramic ring 13 as well as between the inner wall of the main valve body 1 is reduced, the sliding friction is replaced by the rolling friction, the rotating resistance of the valve plate 19 is reduced, after the valve plate 19 completely rotates in place, the valve plate 19 is separated from, and the valve plate 19 is tightly abutted against the ceramic ring 13 at the auxiliary pipeline 12 to complete the switching of sealing and the valve, so that the switching efficiency of the valve is increased.

As an embodiment of the invention, a first hole 22 communicated with the bottom of the slide cylinder 17 is formed in the slide column 18; a group of second holes 23 communicated with the first holes 22 are uniformly distributed on the periphery of the valve plate 19, compressed air is sprayed out through the second holes 23 to reduce the obstruction of solid particles, and the switching efficiency of the three-way valve is further improved; when the valve plate 19 moves to the position corresponding to the roller 3, the roller 3 jacks up the valve plate 19 by a certain height, so that the valve plate 19 is separated from the ceramic ring 13, at the moment, the valve plate 19 drives the sliding column 18 to slide towards the bottom of the sliding cylinder 17, so that compressed air is generated in the sliding cylinder 17, the compressed air is filled into the second hole 23 through the first hole 22 and then is sprayed out from the edge of the valve plate 19, solid impurities adhered to the edge of the valve plate 19 are reduced, the ceramic ring 13 is cleaned, residual impurities on the sealing surface of the ceramic ring 13 are reduced, the sealing performance between the valve plate 19 and the ceramic ring 13 after rotation is further improved, the friction force of the impurities when the valve plate 19 rotates is reduced, the sealing performance of the valve is further improved, and the switching efficiency of the.

As an embodiment of the invention, the height of the roller 3 close to the two ends of the guide groove 21 is lower than that of the roller 3 in the middle of the guide groove 21, so that the impact loss of the roller 3 on the edge of the valve plate 19 is reduced; through the 3 height of running roller 3 that highly are less than the running roller at 21 middle parts of guide slot near 21 both ends of guide slot for 19 gentle by running roller 3 prop up and put down of valve plate, reduce the impact between 19 and the running roller 3 of valve plate, and then reduce running roller 3 and collide with 19 edges of valve plate, reduce the damage of 19 sealed faces of valve plate, further increase the leakproofness and the life of three-way valve.

As an embodiment of the invention, an arc-shaped air bag 24 is arranged at a position, corresponding to the guide groove 21, of one side of the valve plate 19 close to the roller 3, an opening 25 of the air bag 24 faces one side close to the auxiliary pipeline 12, compressed air is ejected after being extruded by the air bag 24, solid impurities near the ceramic ring 13 at the auxiliary pipeline 12 are further reduced, and the sealing performance of the valve plate 19 is improved; when the air bag 24 rotates along with the valve plate 19 and moves to the position corresponding to the roller 3, the air bag 24 is extruded through the roller 3, compressed air is formed after the air in the air bag 24 is extruded, the compressed air is stored in the air bag 24, after the air bag 24 continuously rotates along with the valve plate 19, the roller 3 relaxes the extrusion and sealing effects on the opening 25, the compressed air in the air bag 24 is further ejected out through the opening 25, solid particles remained at the bottom of one end, close to the main valve body 1, of the auxiliary pipeline 12 are cleaned, the ceramic ring 13 corresponding to the auxiliary pipeline 12 is further completely exposed, the burying of the solid particles on the ceramic ring 13 is reduced, the valve plate 19 is completely in place and is in sealing connection with the ceramic ring 13, the internal leakage of the three-way valve is further reduced, and the normal.

As an embodiment of the present invention, the roller 3 is fixed on the side wall of the guide slot 21 by a rotating pin 31, and the roller 3 is rotatably connected with the rotating pin 31; a cleaning roller 32 is rotatably connected to the rotating pin 31 at one side of the roller wheel 3, and a felt ring 33 is arranged on the periphery of the cleaning roller 32; a first gear ring 34 is arranged on the inner periphery of the cleaning roller 32, and a first gear 35 is rotatably connected to the position, corresponding to the first gear ring 34, of the rotating pin 31 through a support; a second gear ring 36 is arranged on the inner periphery of the roller 3, and a second gear 37 is rotatably connected to the position of the rotating pin 31 corresponding to the second gear ring 36 through a bracket; the first gear 35 is fixedly connected with the second gear 37, and the transmission ratio of the first gear ring 34 to the first gear 35 is smaller than that of the second gear ring 36 to the second gear 37, so that the rotating speed of the felt ring 33 is greater than that of the roller 3, and the cleaning efficiency of the sealing surface of the valve plate 19 is improved; when the valve plate 19 contacts the roller 3 and continues to rotate, the valve plate 19 drives the roller 3 to rotate, and because the transmission ratio of the first gear ring 34 to the first gear 35 is smaller than the transmission ratio of the second gear ring 36 to the second gear 37, the rotating speed of the cleaning roller 32 is larger than that of the roller 3, and the felt ring slides relative to the valve plate 19, the sealing surface of the valve plate 19 is continuously cleaned by the felt ring, the cleaning of the sealing surface of the valve plate 19 close to one side of the ceramic ring 13 is ensured, the sealing performance between the valve plate 19 and the ceramic ring 13 is further improved, the internal leakage of the three-way valve is further reduced, and the normal work of the three-way valve.

As an embodiment of the present invention, an arc portion 26 is disposed at a connection position of the main valve body 1 and the auxiliary pipe 12, and a wind deflector 27 is fixedly connected to a position inside the main valve body 1 corresponding to an end surface of the auxiliary pipe 12, an opening of the wind deflector 27 far away from the auxiliary pipe 12 is larger than the other side, the wind deflector 27 is used to accelerate a flow speed of particles at the bottom of the main valve body 1, and further improve switching efficiency of the three-way valve; through curved aviation baffle 27, increase the air flow rate of junction between the main valve body 1 bottom and the secondary pipe 12, the junction of the main valve body 1 of cooperation and secondary pipe 12 is equipped with arc portion 26, and then make the deposited solid particle of arc portion 26 department discharge fast, reduce the burial of solid particle to ceramic ring 13, and then further guarantee the leakproofness between valve plate 19 and the ceramic ring 13, guarantee valve plate 19 simultaneously and rotate to target in place, further reduce the interior hourglass of three-way valve, guarantee the normal work of three-way valve.

When the valve works, the rotating shaft 14 and the swing rod 16 are driven to rotate by rotating the handle 15, the valve plate 19 is driven to rotate by the sliding cylinder 17 and then is switched to the ceramic ring 13 at the position of the auxiliary pipeline 12, so that the pipelines are switched, the dry powder materials conveyed in the valve are high in hardness, high in flow speed and poor in fluidity, the materials are adhered to the inner wall of the main valve body 1, the friction resistance when the valve plate 19 rotates is increased, so that the valve is difficult to open and close, at the moment, the roller 3 is supported in the rotating process of the valve plate 19 around the rotating shaft 14 through the roller 3 rotatably connected in the guide groove 21, so that the sliding friction force between the valve plate 19 and the ceramic ring 13 as well as between the inner wall of the main valve body 1 is reduced, the sliding friction is replaced by the rolling friction, the rotating resistance of the valve plate 19 is reduced, after the valve plate 19 completely rotates in place, the valve plate 19 is separated from, the valve plate 19 is tightly abutted against the ceramic ring 13 at the auxiliary pipeline 12 to complete the switching of sealing and the valve, and the switching efficiency of the valve is further increased; when the valve plate 19 moves to the position corresponding to the roller 3, the roller 3 jacks up the valve plate 19 to a certain height, so that the valve plate 19 is separated from the ceramic ring 13, at the moment, the valve plate 19 drives the sliding column 18 to slide towards the bottom of the sliding cylinder 17, so that compressed air is generated in the sliding cylinder 17, the compressed air is filled into the second hole 23 through the first hole 22 and then is sprayed out from the edge of the valve plate 19, solid impurities adhered to the edge of the valve plate 19 are reduced, the ceramic ring 13 is cleaned, residual impurities on the sealing surface of the ceramic ring 13 are reduced, the sealing performance between the valve plate 19 and the ceramic ring 13 after rotation is further improved, the friction force of the impurities when the valve plate 19 rotates is reduced, the sealing performance of the valve is further improved, and the switching efficiency of the; the height of the roller 3 close to the two ends of the guide groove 21 is lower than that of the roller 3 in the middle of the guide groove 21, so that the valve plate 19 is smoothly supported and put down by the roller 3, the impact between the valve plate 19 and the roller 3 is reduced, the roller 3 is further reduced from colliding with the edge of the valve plate 19, the damage to the sealing surface of the valve plate 19 is reduced, and the sealing property and the service life of the three-way valve are further improved; when the air bag 24 rotates along with the valve plate 19 and moves to a position corresponding to the roller 3, the air bag 24 is extruded through the roller 3, so that compressed air is formed after the air in the air bag 24 is extruded, the compressed air is stored in the air bag 24, after the air bag 24 continuously rotates along with the valve plate 19, the roller 3 loosens the extrusion and sealing effects on the open hole 25, the compressed air in the air bag 24 is further ejected out through the open hole 25, solid particles remained at the bottom of one end, close to the main valve body 1, of the auxiliary pipeline 12 are cleaned, the ceramic ring 13 corresponding to the auxiliary pipeline 12 is further completely exposed, the burying of the solid particles on the ceramic ring 13 is reduced, the valve plate 19 is completely in place and is in sealing connection with the ceramic ring 13, the internal leakage of the three-way valve is further reduced; when the valve plate 19 contacts the roller 3 and continues to rotate, the valve plate 19 drives the roller 3 to rotate, and as the transmission ratio of the first gear ring 34 to the first gear 35 is smaller than the transmission ratio of the second gear ring 36 to the second gear 37, the rotating speed of the cleaning roller 32 is greater than that of the roller 3, and the felt ring slides relative to the valve plate 19, the sealing surface of the valve plate 19 is continuously cleaned by the felt ring, so that the cleaning of the sealing surface of the valve plate 19 close to one side of the ceramic ring 13 is ensured, the sealing performance between the valve plate 19 and the ceramic ring 13 is further improved, the internal leakage of the three-way valve is further reduced, and the normal work of the three-; through curved aviation baffle 27, increase the air flow rate of junction between the main valve body 1 bottom and the secondary pipe 12, the junction of the main valve body 1 of cooperation and secondary pipe 12 is equipped with arc portion 26, and then make the deposited solid particle of arc portion 26 department discharge fast, reduce the burial of solid particle to ceramic ring 13, and then further guarantee the leakproofness between valve plate 19 and the ceramic ring 13, guarantee valve plate 19 simultaneously and rotate to target in place, further reduce the interior hourglass of three-way valve, guarantee the normal work of three-way valve.

The front, the back, the left, the right, the upper and the lower are all based on figure 1 in the attached drawings of the specification, according to the standard of the observation angle of a person, the side of the device facing an observer is defined as the front, the left side of the observer is defined as the left, and the like.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.