CN218433266U

CN218433266U - Rotary valve

Info

Publication number: CN218433266U
Application number: CN202122794344.2U
Authority: CN
Inventors: 叶鑫; 何京华
Original assignee: BEIJING YANSHAN FUNKEN PRECISION MACHINERY CO LTD
Current assignee: BEIJING YANSHAN FUNKEN PRECISION MACHINERY CO LTD
Priority date: 2021-11-15
Filing date: 2021-11-15
Publication date: 2023-02-03
Anticipated expiration: 2031-11-15

Abstract

The application relates to a rotary valve, it includes valve body, rotor and driver, its characterized in that: the valve body is fixedly provided with a pressure equalizing cabin; a rotor: the automatic feeding device comprises a mandrel which is rotationally connected with a valve body and a plurality of feeding plates which are fixedly arranged on the mandrel, wherein the feeding plates are circumferentially distributed around the mandrel, and independent closed spaces are formed between every two adjacent feeding plates, the mandrel and the inner wall of the valve body; a driver: the mandrel is fixedly connected with the shaft and configured to drive the shaft to rotate; pressure equalizing and loading: including casing and feeding honeycomb duct, the discharge end of feeding honeycomb duct is located valve body feed inlet department, sets up the degasification mouth with external intercommunication on the casing, is equipped with the airflow channel with degasification mouth intercommunication between valve body feed inlet and the feeding honeycomb duct. The application has the advantages that gas blown out by back flushing in the material conveying process can be effectively removed, and the conveying efficiency is improved.

Description

Rotary valve

Technical Field

The application relates to the field of material conveying devices, in particular to a rotary valve.

Background

The rotary valve can also be called as a rotary feeding valve, a star-shaped discharger, a rotary ash discharge valve, a vane feeder and the like, is made of various materials such as cast iron, carbon steel, stainless steel and the like, and is mainly used for sealing discharging and locking air.

With respect to the related art in the above, the inventors consider that: the adaptability to the material is poor in current rotary valve production process, and the process that the material got into the valve body goes on in step with the outside exhaust process of gas in the valve body, can lead to the rotary valve often to block the material when unloading and shut down, and the material can't stably be carried, influences the continuous steady operation of production.

Disclosure of Invention

In order to be able to maintain the stability of the feeding process, the application provides a rotary valve.

The application provides a rotary valve adopts following technical scheme:

a rotary valve comprising a valve body, a rotor, and a driver, characterized in that: the valve body is fixedly provided with a pressure equalizing cabin; a rotor: the automatic feeding device comprises a mandrel which is rotationally connected with a valve body and a plurality of feeding plates which are fixedly arranged on the mandrel, wherein the feeding plates are circumferentially distributed around the mandrel, and independent closed spaces are formed between every two adjacent feeding plates, the mandrel and the inner wall of the valve body; a driver: the mandrel is fixedly connected with the base and is configured to drive the mandrel to rotate; pressure equalizing and loading: including casing and feeding honeycomb duct, the discharge end of feeding honeycomb duct is located valve body feed inlet department, sets up the degasification mouth with external intercommunication on the casing, is equipped with the airflow channel who communicates with the degasification mouth between valve body feed inlet and the feeding honeycomb duct.

Through adopting above-mentioned technical scheme, when carrying out the pay-off through this rotary valve, send the material to the feed inlet department of valve body through the feeding honeycomb duct, the flitch rotates the material that can disturb valve body feed inlet department to carry partly thereupon to rotate, move to the discharge gate department of valve body under rotor pivoted effect until the material, this is just the process that the material passes through the rotation of rotor and then passes through the valve body. In the process, rotor pivoted in-process can carry and come from the inside gas of discharge gate and valve body, position department from valve body discharge gate position rotation to the valve body feed inlet, because the space between two feed plates is filled to the material in valve body feed inlet department, so can will come from the gas outgoing of valve body discharge gate department between two feed plates, and because set up airflow channel here, airflow channel is again through taking off gas port and external intercommunication, so the material can be smooth and easy fill between two adjacent feed plates, it is difficult that the gas that has reduced greatly between two adjacent feed plates is difficult to discharge and causes the material to fill to two feed plates between the difficulty, cause the problem of pay-off inefficiency. In addition, since rotary valves are often used to transport powders, the arrangement of the ballast can reduce the possibility of powder leaking to the outside environment when entering between two adjacent feed plates.

Optionally, the mandrel is connected with the valve body through a bearing, and a combined sealing assembly is arranged on the valve body and is arranged at the bearing.

Through adopting above-mentioned technical scheme, the whole gas tightness of valve body can be guaranteed in the setting of combination seal assembly, because the bearing is used for being connected dabber and valve body, so must have the gap, and the existence of combination seal assembly makes the gas tightness here promote greatly for the rotary valve can be applicable to in the sealed unloading.

Optionally, the combined sealing assembly comprises a labyrinth sealing sleeve sleeved on the end portion of the mandrel and a sealing air channel arranged on the valve body, the labyrinth sealing sleeves are at least two and distributed on two sides of the rotor, and the sealing air channel penetrates through the side wall of the valve body and extends to the side wall of the labyrinth sealing sleeve.

Through adopting above-mentioned technical scheme, the setting of labyrinth seal cover has realized the gas tightness of reinforcing valve body inner mandrel tip through mechanical structure, and the sealed gas passage that the cooperation was add simultaneously lets in sealed gas (inert gas) of usefulness in to the labyrinth seal cover through sealed gas passage, can further strengthen the gas tightness here of valve body, reduces the inside gas of valve body and leaks, and then drives the possibility that the material leaked.

Optionally, the mandrel is sleeved with a wear-resistant shaft sleeve, and the labyrinth seal sleeve is sleeved outside the wear-resistant shaft sleeve and is fixedly connected with the wear-resistant shaft sleeve.

Through adopting above-mentioned technical scheme, the sealed effect of preferred will be realized to the combination seal assembly, just need with the dabber butt, the reduction fit clearance as far as possible, but the dabber lasts and rotates, can lead to the fact lasting wearing and tearing to the combination seal assembly, and wearing and tearing can lead to the fact the size to reduce, and then make the fit clearance increase, so add wear-resisting axle sleeve, durable purpose again when realizing reducing the fit clearance.

Optionally, an annular sealing assembly is arranged on the labyrinth sealing sleeve, and the annular sealing assembly is abutted against the valve body and/or the wear-resistant shaft sleeve.

Through adopting above-mentioned technical scheme, through annular seal assembly's setting, further improved the gas tightness here of valve body, the annular seal assembly at this department can select for use wear-resisting rubber ring, also can select for use carbon fiber sealing ring etc..

Optionally, the feeding plate comprises a long straight plate fixedly arranged on the mandrel, and the feeding plate is arranged along the length direction of the mandrel.

Through adopting above-mentioned technical scheme, the powder that transports that long straight form panel welding can be high-efficient convenient on the dabber. When the feeding interval formed by the two feeding plates rotates to the feeding port of the valve body, the feeding plates are arranged along the length direction of the mandrel, so that each feeding interval is independently communicated with the outside, namely, the previous feeding interval completely moves to the lower part of the discharging port of the feeding guide pipe and is not communicated with the outside when being filled with materials, so that each feeding interval can carry enough materials when rotating, and the feeding efficiency is improved.

Optionally, the feeding plate is provided with a guide ridge protruding to one side, and the guide ridge protrudes to the material flowing direction in the valve body.

Through adopting above-mentioned technical scheme, the setting of direction abrupt ridge is for the convenience of carrying the aggregate, and the setting of abrupt ridge is difficult to take place the condition of material card between valve body and delivery sheet when carrying the aggregate. Even if there is the aggregate of card between delivery sheet and valve body inner wall, along with the rotation of dabber, the delivery sheet that does not have the direction abrupt ridge, the delivery sheet that has the direction abrupt ridge also breaks away from or promotes the material with the aggregate more easily and continues to remove, has reduced the card material and has leaded to the possibility of equipment outage, has improved job stabilization nature.

Optionally, a guide plate is arranged inside the valve body, the airflow channel and the guide plate are respectively arranged on two sides of the valve body feeding port, and a flow dividing part extending towards the valve body feeding port or the inside of the valve body is arranged on the guide plate.

Through adopting above-mentioned technical scheme, the setting up of guide plate has reduced a large amount of materials and has piled up the possibility that causes the jam in valve body feed inlet department, the setting up of reposition of redundant personnel portion can make the material of feed inlet department produce the difference and distribute, no longer pile up in one under the effect of gravity, make the delivery sheet rotate and then promote the material of feed inlet department when whole, the material of part position is driven by the delivery sheet more easily, and then make the whole production clearance of material of feed inlet department, more easily driven by the delivery sheet and remove, further reduced the possibility that takes place the card material, and the work stability is improved.

Optionally, the mandrel is rotatably connected with the valve body through a bearing, and the valve body is fixedly connected with an automatic grease feeder.

Through adopting above-mentioned technical scheme, automatic currying ware set up can realize self-lubricate when the rotary valve operation.

Optionally, the valve body is internally detachably connected with end face gap adjusting plates, and the end face gap adjusting plates are at least two and distributed on two sides of the rotor.

By adopting the technical scheme, the feeding speed and the material size are not constant, so that the possibility that the rotor needs to be replaced exists, the rotor can be independently adjusted and replaced according to the production condition by arranging the end surface gap adjusting plate, and the whole machine is not required to be replaced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when carrying out the pay-off through this rotary valve, send the material to the feed inlet department of valve body through the feeding honeycomb duct, the flitch rotates the material that can disturb valve body feed inlet department to carry partly thereupon to rotate, move to the discharge gate department of valve body under rotor pivoted effect until the material, this is the process that the material passes through the rotation of rotor and then passes through the valve body. In the process, rotor pivoted in-process can carry and come from the inside gas of discharge gate and valve body, position department from valve body discharge gate position rotation to the valve body feed inlet, because the space between two feed plates is filled to the material in valve body feed inlet department, so can will come from the gas outgoing of valve body discharge gate department between two feed plates, and because set up airflow channel here, airflow channel is again through taking off gas port and external intercommunication, so the material can be smooth and easy fill between two adjacent feed plates, it is difficult that the gas that has reduced greatly between two adjacent feed plates is difficult to discharge and causes the material to fill to two feed plates between the difficulty, cause the problem of pay-off inefficiency. In addition, since rotary valves are often used to transport powders, the arrangement of the ballast can reduce the possibility of powder leaking to the outside environment when entering between two adjacent feed plates.

2. The setting of guide plate has reduced a large amount of materials and has piled up and cause the possibility of jam in valve body feed inlet department, the setting of reposition of redundant personnel portion can make the material of feed inlet department produce the difference and distribute, no longer pile up in a department under the effect of gravity, make the delivery sheet rotate and then promote the material of feed inlet department when whole, the material of part position is driven by the delivery sheet more easily, and then make the whole clearance that produces of material of feed inlet department, more easily driven by the delivery sheet and remove, further reduced the possibility that takes place the card material, and the work stability is improved.

Drawings

Fig. 1 is a schematic diagram of an embodiment.

Fig. 2 is a schematic view showing a rotor structure in the embodiment.

Fig. 3 is a schematic view showing the structure of the guide ridge in the embodiment.

FIG. 4 is a schematic diagram showing the position of the seal gas passage in the embodiment.

Fig. 5 is a schematic diagram showing the position of the automatic greaser in the embodiment.

Description of reference numerals: 1. a valve body; 11. a rotor; 111. a feeding plate; 1111. a guide ridge; 112. a mandrel; 12. a baffle; 121. a flow dividing section; 13. a wear-resistant shaft sleeve; 2. pressure equalizing and loading; 21. a housing; 22. a feeding guide pipe; 23. a degassing port; 3. an air flow channel; 4. a driver; 5. a composite seal assembly; 51. a labyrinth gland; 52. sealing the gas channel; 6. an end face gap adjusting plate; 7. an automatic greasing device.

Detailed Description

The present application is described in further detail below with reference to the attached drawings.

The embodiment of the application discloses a rotary valve, and referring to fig. 1 and 2, the rotary valve comprises a valve body 1, a rotor 11, an actuator 4 and a pressure equalizing chamber 2. The rotor 11 comprises a mandrel 112 and a feeding plate 111, the mandrel 112 is installed inside the valve body 1 through a bearing, the driver 4 is connected outside the valve body 1, and an output shaft of the driver 4 is fixedly connected with the mandrel 112 and used for driving the mandrel 112 to rotate. The feeding plates 111 are welded on the mandrel 112, the feeding plates 111 are arranged along the length direction of the mandrel 112, the feeding plates 111 are multiple and distributed circumferentially by taking the mandrel 112 as an axis, so that the feeding plates 111 are radially connected to the mandrel 112, and two adjacent feeding plates 111 are combined with the mandrel 112 and the inner wall of the valve body 1 to form an independent feeding interval for bearing materials and conveying the materials to a discharge port at the bottom end of the valve body 1 along with the rotation of the mandrel 112.

Referring to fig. 1, the pressure equalizing chamber 2 includes a housing 21 fixed on the valve body 1 and a feeding draft tube 22 fixedly connected to the housing 21, the housing 21 is a cylindrical structure and the feeding draft tube 22 extends into the housing 21, and the top end of the feeding draft tube 22 extends from the top end of the housing 21. The bottom of casing 21 sets firmly on valve body 1, and the bottom of feeding honeycomb duct 22 sets firmly in the feed inlet department on valve body 1 top, forms airflow channel 3 between feeding honeycomb duct 22 and the casing 21 inner wall, and feeding honeycomb duct 22's bottom only covers valve body 1 feed inlet part for airflow channel 3 communicates with valve body 1 is inside through the feed inlet on valve body 1 top. In addition, a degassing port 23 is formed at a top end position of the housing 21, and the degassing port 23 communicates the inside of the housing 21 with the outside, thereby enabling the gas flow path 3 to communicate with the outside through the degassing port 23.

According to the scheme, the rotor 11 can carry gas from the discharge port and the interior of the valve body 1 in the rotating process, and the gas rotates from the position of the discharge port of the valve body 1 to the position of the feed port of the valve body 1. Because the space between two feed plates 111 is filled to the material in valve body 1 feed inlet department, so can be with the gas outgoing between two feed plates 111, and owing to set up airflow channel 3 here, airflow channel 3 communicates with the external world through taking off gas port 23 again, so the material can be smooth and easy fills between two adjacent feed plates 111, has reduced greatly because the gas between two adjacent feed plates 111 is difficult to discharge, and then causes the material to fill to the difficulty between two feed plates 111, causes the problem that the pay-off is inefficient. In addition, since rotary valves are often used to transport powders, the arrangement of the equalizing chamber 2 reduces the possibility of powder leaking to the outside environment when entering between two adjacent feed plates 111.

Referring to fig. 1 and 2, a guide plate 12 is fixedly disposed inside the valve body 1, the guide plate 12 is located at a feed inlet on the top end of the valve body 1 and is located on one side of a discharge outlet of the feed guide pipe 22, the guide plate 12 in this embodiment is in a bent triangular plate shape, a bent portion of the guide plate extends towards the rotor 11 direction, and the guide plate 12 is equally divided into two triangular plates with the same shape and size, so that the guide plate 12 is in a flap shape. This bending part forms reposition of redundant personnel portion 121 for the material with 1 feed inlet department of valve body shunts and leads, make the material of feed inlet department produce the difference and distribute, no longer pile up in a department under the effect of gravity, rotate when pay-off board 111 and then promote the material of feed inlet department when whole, the material of part position is driven by pay-off board 111 more easily, and then make the whole clearance that produces of material of feed inlet department, it removes to be driven by pay-off board 111 more easily, further reduced the possibility that takes place the card material, and the work stability is improved.

Referring to fig. 3, in other embodiments, in order to meet the requirement of conveying the pellets, guide ridges 1111 are provided on the feeding plate 111, and the guide ridges 1111 are located at the middle position of the feeding plate 111 in the longitudinal direction and extend in the tangential direction of the mandrel 112 at the middle position, so that the feeding plate 111 is in a flap shape.

Referring to fig. 4, a combined sealing assembly 5 is fixedly connected inside the valve body 1, the combined sealing assembly 5 in this embodiment includes a labyrinth sealing sleeve 51, the labyrinth sealing sleeve 51 is located at an end of the mandrel 112, and an outer wall of the labyrinth sealing sleeve 51 is fixedly arranged on an inner wall of the valve body 1. The possibility of gas leakage inside the valve body 1 is reduced through the complicated mechanism of the labyrinth seal 51, and the mechanical seal of the valve body 1 is realized.

Referring to fig. 4, in other embodiments, the composite sealing assembly 5 further includes a sealing air passage 52, one end of the sealing air passage 52 penetrates through the outer wall of the valve body 1 and communicates with the outside, and the other end penetrates through the inner wall of the valve body 1 and extends on the outer wall of the labyrinth sealing sleeve 51. Inert gas is introduced into the sealing gas channel 52 through external equipment, so that the pressure in the sealing gas channel 52 is equal to or greater than the pressure in the valve body 1, the possibility of gas leakage in the valve body 1 is further reduced, and the gas tightness of the valve body 1 is further improved.

Referring to fig. 4, in other embodiments, in order to prolong the service life of the labyrinth seal 51, the wear-resistant sleeve 13 is coaxially sleeved on the end portion of the mandrel 112, the labyrinth seal 51 is coaxially sleeved on the wear-resistant sleeve 13, and the labyrinth seal 51 is fixedly connected with the wear-resistant sleeve 13. When the mandrel 112 rotates, friction is generated between the mandrel 112 and the wear-resistant shaft sleeve 13, so that the labyrinth seal sleeve 51 is not abraded, and the service life of the labyrinth seal sleeve 51 is further prolonged.

Referring to fig. 5, in other embodiments, since the feeding speed and the material size are not constant, there is a possibility that the rotor 11 needs to be replaced, and therefore, the end face gap adjusting plates 6 are bolted inside the valve body 1, and the end face gap adjusting plates 6 are located at two sides of the rotor 11, abut against the side wall of the feeding plate 111, and are coaxially sleeved on the mandrel 112. Therefore, the rotors 11 with different sizes can be independently adjusted and replaced according to production conditions, and the end face gap adjusting plate 6 with proper thickness can be synchronously replaced without replacing the whole machine.

With reference to fig. 5, it should also be mentioned that an automatic greaser 7 is also fixedly connected to the valve body 1 for lubricating the bearings of the connecting mandrel 112.

All equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A rotary valve comprising a valve body (1), a rotor (11), and a driver (4), characterized in that: the valve body (1) is fixedly provided with a pressure equalizing chamber (2);

rotor (11): the valve body (1) is rotatably connected with a mandrel (112) and a plurality of feeding plates (111) fixedly arranged on the mandrel (112), the feeding plates (111) are circumferentially distributed around the mandrel (112), and independent closed spaces are formed between two adjacent feeding plates (111) and the mandrel (112) as well as between the two adjacent feeding plates and the inner wall of the valve body (1);

driver (4): is fixedly connected with the mandrel (112) and is configured to drive the mandrel (112) to rotate;

a ballast (2): the device comprises a shell (21) and a feeding guide pipe (22), wherein the discharge end of the feeding guide pipe (22) is positioned at a feed inlet of a valve body (1), a degassing port (23) communicated with the outside is formed in the shell (21), and an air flow channel (3) communicated with the degassing port (23) is formed between the feed inlet of the valve body (1) and the feeding guide pipe (22).

2. A rotary valve as set forth in claim 1 wherein: the mandrel (112) is connected with the valve body (1) through a bearing, a combined sealing component (5) is arranged on the valve body (1), and the combined sealing component (5) is arranged at the bearing.

3. A rotary valve as set forth in claim 2 wherein: the combined sealing assembly (5) comprises labyrinth sealing sleeves (51) sleeved at the end parts of the mandrels (112) and sealing air channels (52) arranged on the valve body (1), wherein the labyrinth sealing sleeves (51) are at least two and distributed on two sides of the rotor (11), and the sealing air channels (52) penetrate through the side wall of the valve body (1) and extend to the side wall of the labyrinth sealing sleeves (51).

4. A rotary valve as set forth in claim 3 wherein: the core shaft (112) is sleeved with a wear-resistant shaft sleeve (13), and the labyrinth seal sleeve (51) is sleeved outside the wear-resistant shaft sleeve (13) and fixedly connected with the wear-resistant shaft sleeve.

5. A rotary valve as set forth in claim 4 wherein: and an annular sealing assembly is arranged on the labyrinth sealing sleeve (51), and the annular sealing assembly is abutted against the valve body (1) and/or the wear-resistant shaft sleeve (13).

6. A rotary valve as set forth in claim 1 wherein: the feeding plate (111) comprises a long straight plate fixedly arranged on the mandrel (112), and the feeding plate (111) is arranged along the length direction of the mandrel (112).

7. A rotary valve according to claim 1 or 6, wherein: the feeding plate (111) is provided with a guide ridge (1111) protruding towards one side, and the guide ridge (1111) protrudes towards the material flowing direction in the valve body (1).

8. A rotary valve as set forth in claim 1 wherein: valve body (1) inside is equipped with guide plate (12), and airflow channel (3) are located valve body (1) feed inlet both sides with guide plate (12) branch, are equipped with reposition of redundant personnel portion (121) to valve body (1) feed inlet or the inside extension of valve body (1) on guide plate (12).

9. A rotary valve as set forth in claim 1 wherein: the mandrel (112) is rotationally connected with the valve body (1) through a bearing, and the valve body (1) is fixedly connected with an automatic grease feeder (7).

10. A rotary valve as set forth in claim 1 wherein: the valve body (1) is internally detachably connected with end face gap adjusting plates (6), and the end face gap adjusting plates (6) are at least two and distributed on two sides of the rotor (11).