CN210461779U

CN210461779U - Reversing valve and vacuum feeding machine using same

Info

Publication number: CN210461779U
Application number: CN201920973799.0U
Authority: CN
Inventors: 钱申敏; 钱瑞伟; 白广金
Original assignee: Tianjin Feiyun Powder Equipment Co ltd
Current assignee: Tianjin Feiyun Powder Equipment Co ltd
Priority date: 2019-06-26
Filing date: 2019-06-26
Publication date: 2020-05-05
Anticipated expiration: 2029-06-26

Abstract

The utility model provides a switching-over valve and use vacuum material loading machine of this valve belongs to valve and charging equipment field, including the valve body, the lower extreme of valve body is equipped with first intercommunication mouth, and the side of valve body is equipped with second intercommunication mouth, and the inside of valve body is equipped with the case of cooperation and lateral shifting with it, and at the left and right extreme position of case, case and the sealed setting of valve body, the side both ends that the valve body does not set up second intercommunication mouth are equipped with fixed end cover and ventilation end cover respectively, and the one end that the valve body was kept away from to the fixed end cover is equipped with the driving piece that drives valve core lateral shifting, is equipped with the ventilation hole on the ventilation. The utility model discloses accomplish the hopper of vacuum feeder and the connection between the vacuum pump with a switching-over valve, reach and open vacuum, the vacuum purpose of pressure release to and the raise dust that the bottom hopper produced when the blowing is absorbed, simple structure, the feature of environmental protection is strong, and is with low costs.

Description

Reversing valve and vacuum feeding machine using same

Technical Field

The utility model belongs to the valve field relates to the switching-over valve that vacuum material loading machine was used, especially relates to a switching-over valve and use vacuum material loading machine of this valve.

Background

The vacuum feeder is a vacuum conveyor using a vacuum generator as a vacuum source, and can directly feed materials from a container into a mixer, a reactor, a hopper, a tablet press, a packing machine, a vibrating screen, a granulator, a wet granulator, a dry granulator and a pulverizer.

The current common working process of the vacuum feeding machine is as follows: when the air pump is rotated, the air pump generates negative pressure to form vacuum air flow, the material is sucked to suck the material nozzle to form material air flow, the material and the air are completely separated by the filter in the feed bin of the feeding machine through the suction pipe, when the feed bin is filled with the material, the controller can automatically cut off the power supply, the vacuum feeding machine stops working, meanwhile, the feed bin door is automatically opened, the material falls into the hopper of the equipment, and meanwhile, the compressed air automatically cleans the filter through the pulse back-blowing valve. When the time is up or the material level sensor sends a material loading signal, the material loading machine is automatically started.

At present in common vacuum charging machine working process, need a valve to break off the connection of vacuum hopper and vacuum pump after the material accomplishes the material loading of default value, meanwhile, need another valve to open, in order to guarantee vacuum pump normal operating, need set up two valves and move simultaneously, need to have dust exhaust device to prevent the raise dust emergence when the material in the charging machine falls into the bottom hopper in addition, guarantee the feature of environmental protection, and ordinary switching-over valve generally adopts the steel structure to pass through welding and machine tooling shaping, the process man-hour of processing is longer, and is with high costs.

SUMMERY OF THE UTILITY MODEL

The to-be-solved problem of the utility model is to provide a switching-over valve and use vacuum material loading machine of this valve, accomplish the hopper of vacuum charging machine and the connection between the vacuum pump with a switching-over valve, reach and open vacuum, the vacuum purpose of pressure release to the raise dust that produces bottom hopper when going to the blowing is absorbed, simple structure, the feature of environmental protection is strong, and is with low costs.

In order to solve the technical problem, the utility model discloses a technical scheme is: a reversing valve comprises a valve body, wherein a first communicating port is formed in the lower end of the valve body, a second communicating port is formed in the side face of the valve body, a valve core which is matched with the valve body and transversely moves is arranged inside the valve body, and the valve core and the valve body are arranged in a sealing mode at the left limit position and the right limit position of the valve core;

and two ends of the side surface of the valve body, which is not provided with the second communication port, are respectively provided with a fixed end cover and a ventilation end cover, one end of the fixed end cover, which is far away from the valve body, is provided with a driving piece for driving the valve core to transversely move, and the ventilation end cover is provided with a ventilation hole.

Further, the driving member is an air cylinder.

Further, the valve rod penetrates through the valve core and is fixedly connected with the output shaft of the driving piece, the valve rod is of a bolt structure, a first locking nut for fixing the valve rod and the output shaft of the driving piece is arranged on the valve rod, and a second locking nut for positioning the valve core is arranged on the valve rod.

Furthermore, one end of the valve core, which is far away from the driving piece, is provided with a chamfer, and at the left limit position of the valve core, the chamfer extends into the ventilation end cover and is arranged in a contact manner.

Furthermore, the ventilation end cover and the fixed end cover are identical in structure and symmetrically arranged on two sides of the valve body, the inner diameter of the ventilation end cover is smaller than the diameter of the sealing surface of the valve body, and second sealing rings for sealing are arranged between the ventilation end cover and the valve body and between the fixed end and the valve body.

Furthermore, the ventilation end cover and the fixed end cover are steel plate stamping integrated structure, the ventilation end cover and the fixed end cover are fixed on the valve body through screws or bolts, and the valve body is of an aluminum profile extrusion molding structure.

Furthermore, the valve core is made of polyurethane, a first sealing table surface and a second sealing table surface are arranged at the lower end of the valve body, the first sealing table surface corresponds to the right limit position of the valve core, and the second sealing table surface corresponds to the left limit position of the valve core.

Furthermore, the ventilation hole is a plurality of and relative the axis equipartition setting of ventilation end cover, the ventilation hole be with the fan-shaped hole of ventilation end cover concentric.

The vacuum feeding machine comprises a main body, wherein the reversing valve is arranged at the upper end of the main body, the first communicating hole is formed in the upper end of the main body in a sealing mode and communicated with the inside of the main body, a pipe joint is arranged on the second communicating hole in a sealing mode, and the pipe joint is connected with a vacuum pump through a hose.

Further, be equipped with first sealing washer between first intercommunication mouth with the main part.

Compared with the prior art, the utility model has the advantages and positive effect as follows.

1. The utility model relates to a reversing valve, set up the case by the driving piece driven of outside in the valve body, the left extreme position of case realizes the sealed to the ventilation end cover, conveniently through second intercommunication mouth, the inside of second intercommunication mouth to the object of evacuation is vacuumized, the right extreme position of case realizes the intercommunication of ventilation end cover and the object of evacuation, conveniently supply external air supply, guarantee the operation of vacuum pump, the switching of vacuum and non-vacuum can be realized to the action conversion of a case, simultaneously with the outside intercommunication, the structure has been simplified, the operation is more convenient and reliable;

2. after the first locking nut and the second locking nut are arranged, the firmness of the valve core relative to the valve rod is improved, the firmness of the valve rod relative to the output shaft of the driving element is also improved, and the problem of unstable structure caused by loosening of threads is avoided;

3. the ventilation end cover and the fixed end cover are both of a steel plate stamping integrated structure, are suitable for batch production, have low cost, high strength and high precision, are greatly simplified compared with the original processing and welding process, have low cost, are fixed on the valve body through screws or bolts and the like by adopting a conventional structure, reduce the maintenance cost, are of an aluminum profile extrusion molding structure, and have low batch production cost and light weight;

4. the vacuum feeder using the reversing valve has the valve core moving in the valve body and in the left extreme position, the valve core is sealed relative to the valve body, the vent hole is communicated with the interior of the main body, the vacuum pump carries out vacuum suction operation on the interior of the main body through the hose, when the air inlet is arranged at the right limit position, the air inlet on the air inlet end cover is communicated with the inside of the main body, so that the communication between the inside of the main body and the external environment is realized, the vacuum state is relieved, the blanking action inside the main body is realized, dust can be raised during the blanking process, the vacuum pump continues to operate at the moment, most of the absorbed air comes from the external air source of the air inlet to play a role in air supplement, and a small part of the absorbed air is the air in the main body, the dust absorption device has the advantages that the dust absorption effect is realized, the whole structure concept is ingenious, the switching between the vacuum state and the non-vacuum state is realized through the position of one valve core, the structure is compact, the operation is convenient, and the cost is low.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic structural diagram of a reversing valve of the present invention, in which a valve core is at a right limit position;

figure 2 is a top view of the present invention from figure 1;

FIG. 3 is a detailed view of section A of FIG. 1 in accordance with the present invention;

fig. 4 is an exploded schematic view of a diverter valve of the present invention;

fig. 5 is a schematic structural view of the reversing valve of the present invention, with the valve core in the left limit position;

fig. 6 is a front view of the vent cap of the present invention;

fig. 7 is a schematic structural view of a vacuum feeder using a reversing valve according to the present invention;

fig. 8 is a schematic structural diagram of the main body of the present invention cooperating with a reversing valve.

Reference numerals:

1. a valve body; 11. a first communication port; 12. a second communication port; 13. a first sealing land; 14. a second sealing land; 2. fixing an end cover; 3. a vent end cap; 31. a vent hole; 4. a valve core; 41. chamfering; 5. a valve stem; 51. a first lock nut; 52. a second lock nut; 6. a pipe joint; 7. a drive member; 8. a second seal ring; 9. a first seal ring; 100. a diverter valve; 200. a main body; 201. a feed inlet; 300. a hose; 400. a vacuum pump.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and 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 therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings.

As shown in fig. 1 to 5, the utility model relates to a reversing valve, which comprises a valve body 1, wherein a first communicating port 11 is arranged at the lower end of the valve body 1, a second communicating port 12 is arranged at the side surface of the valve body 1, a valve core 4 which is matched with the valve body 1 and transversely moves is arranged inside the valve body 1, the valve core 4 and the valve body 1 are arranged in a sealing way at the left and right limit positions of the valve core 4, and the first communicating port 11 and the second communicating port 12 are arranged at 90 degrees;

the two ends of the side surface of the valve body 1, which is not provided with the second communicating port 12, are respectively provided with a fixed end cover 2 and a ventilation end cover 3, one end of the fixed end cover 2, which is far away from the valve body 1, is provided with a driving piece 7 for driving the valve core 4 to transversely move, the ventilation end cover 3 is provided with a ventilation hole 31, and the valve core 4 is in reciprocating motion in the valve body 1 under the action of the driving piece 7, so that vacuum charging and vacuum breaking discharging are realized.

Preferably, driving piece 7 is the cylinder, preferably cylinder structure, and is with low costs, and the specification is various, convenient purchase.

Preferably, after the valve rod 5 passes through the valve core 4, the valve rod 5 is fixedly connected with the output shaft of the driving member 7, the valve rod 5 is in a bolt structure, the valve rod 5 and the output shaft of the driving member 7 are provided with a first locking nut 51 for fixing the valve rod 5 and the driving member 7, the valve rod 5 is provided with a second locking nut 52 for positioning the valve core 4, after the first locking nut 51 and the second locking nut 52 are arranged, the firmness of the valve core 4 relative to the valve rod 5 is improved, the firmness of the valve rod 5 relative to the output shaft of the driving member 7 is also improved, and the problem of unstable structure caused by loosening of threads is solved.

Preferably, the valve core 4 is provided with a chamfer 41 at one end far away from the driving part 7, at the left limit position of the valve core 4, the chamfer 41 extends into the ventilation end cover 3 and the ventilation end cover 3 is in contact arrangement, and after the chamfer 41 is arranged, the function of guiding can be achieved, and the secondary sealing is achieved and the sealing performance is improved by matching with the ventilation end cover 3.

Preferably, ventilation end cover 3 is the same with fixed end cover 2's structure and the symmetry sets up in the both sides of valve body 1, but batch production, the kind of part has been reduced, conveniently carry out stock and later maintenance, promote the commonality of part, reduce manufacturing and inventory cost, ventilation end cover 3's internal diameter is less than the sealed face diameter of valve body 1, conveniently contact with chamfer 41 and realize secondary seal, promote sealing performance, between ventilation end cover 3 and the valve body 1, be equipped with sealed second sealing washer 8 of usefulness between stiff end and the valve body 1, promote the leakproofness at both ends about the valve body 1, promote the leakproofness of whole structure, guarantee vacuum pump 400's evacuation efficiency.

Preferably, ventilation end cover 3 and fixed end cover 2 are steel sheet punching press integrated into one piece structure, are fit for batch production, and cost reduction, intensity is high moreover, and the precision is high, and processing and welding process relatively originally simplify greatly, and cost reduction, ventilation end cover 3 and fixed end cover 2 all adopt conventional structure to fix on the valve body 1 through fixed places such as screw or bolt, reduce the maintenance cost, and valve body 1 is aluminium alloy extrusion structure, and batch production is with low costs, light in weight.

Preferably, case 4 is made by the polyurethane material, the wearability is good, long service life, and chemical property is stable, the lower extreme of valve body 1 is equipped with first sealed mesa 13 and second sealed mesa 14, first sealed mesa 13 corresponds the right extreme position of case 4, second sealed mesa 14 corresponds the left extreme position of case 4, first intercommunication mouth 11 is established between first sealed mesa 13 and second sealed mesa 14, set up first sealed mesa 13 and second sealed mesa 14 after, there are better sealed and supporting role to the both ends extreme position of case 4, make the structure more reliable and more stable.

Preferably, the vent holes 31 are uniformly distributed on the axis of the plurality of vent end covers 3, the vent holes 31 are fan-shaped holes concentric with the vent end covers 3, the uniform distribution is attractive, the area of air supplement can be increased as much as possible by arranging the plurality of fan-shaped holes, the sufficient air supplement amount under the blanking state is ensured, and the overload of the vacuum pump 400 is avoided.

As shown in fig. 1 to 8, a vacuum feeder using a reversing valve 100 includes a main body 200, the reversing valve 100 is disposed at an upper end of the main body 200, a first communicating hole 11 is hermetically disposed at an upper end of the main body 200 and communicates with an inside of the main body 200, a pipe joint 6 is hermetically disposed at a second communicating hole, the pipe joint 6 is connected to a vacuum pump 400 through a hose 300, one end of the pipe joint 6 communicates with an inside of a valve body 1, and the other end of the pipe joint 6 communicates with the hose 300, a valve core 4 moves in the valve body 1, the valve core 4 is sealed with respect to the valve body 1 at a left limit position, a vent hole 31 communicates with the inside of the main body 200, the vacuum pump 400 performs a vacuum sucking operation on the inside of the main body 200 through the hose 300, and a vent hole 31 on a vent cover 3 communicates with the inside of the main body 200 at a right limit position, thereby achieving communication between the inside, the unloading in-process has the raise dust to produce, and vacuum pump 400 continues the operation this moment, and the absorptive gaseous most comes from the outside air supply in ventilation hole 31, plays the effect of tonifying wind, and the minority is the gas in the main part 200, plays absorbent effect to the raise dust, and overall structure design is ingenious, has realized the switching of vacuum and non-vacuum state through the position of a case 4, compact structure moreover, convenient operation, it is with low costs.

Preferably, be equipped with first sealing washer 9 between first intercommunication mouth 11 and the main part 200, realized the sealed of valve body 1 with the main part 200 upper end, avoid leaking gas, guarantee evacuation efficiency, practice thrift the energy consumption, also avoid the raise dust to leak simultaneously.

In the practical use process, the reversing valve 100 is installed on the main body 200 of the powder material conveying equipment, when the vacuum feeder works, the driving part 7, preferably an air cylinder, on the reversing valve 100 is driven by the control center, the control center is a PLC control program, after the driving part 7 receives a signal, the output shaft extends out, the valve core 4 connected to the valve rod 5 is pushed to one end, close to the ventilation end cover 3, of the valve body 1, namely the upper end of the second sealing table surface 14, at the moment, the inside of the main body 200 is isolated from the ventilation hole 31 of the ventilation end cover 3, the main body 200 is communicated with the vacuum pump 400 through the hose 300, after the vacuum pump 400 acts, the air in the main body 200 starts to be vacuumized, the materials enter the main body 200 through the feeding hole 201 under the negative pressure effect, the vacuum feeding is realized, after the preset values of the materials are reached, the bin door is opened, the valve core 4 moves backwards under the action of the cylinder, at the moment, the first communication port 11 and the second communication port 12 on the valve body 1 are communicated with the vent hole 31 on the vent end cover 3, the interior of the main body 200 breaks the vacuum state, the material can be discharged, and meanwhile, the vacuum pump 400 sucks air in the environment through the vent hole 31, so that the vacuum pump 400 is not overloaded; and vacuum pump 400 still pumps the air in the vacuum hopper a small amount, the poplar dirt that produces when arranging the material is inhaled back in the vacuum hopper, in order to stop the raise dust condition, but whole structure reduces valve quantity, replace two valves of original structure for a current switching-over valve 100, let control more simple and convenient, both protect vacuum pump 400 safe operation, prevent overloading, also stop the feed bin raise dust, vacuum feeder production efficiency has been improved, reach and open the vacuum, the vacuum purpose of pressure release, and the raise dust that the bottom hopper produced when blowing is inhaled and is removed, simplify equipment structure, need not add other equipment, can effectively stop on-the-spot raise dust, valve body 1 adopts extrusion aluminium alloy in addition, ventilation end cover 3 and fixed end cover 2 all adopt the steel sheet stamping workpiece, in order to reduce manufacturing procedure man-hour, the processing cost has been reduced by a wide margin.

While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A reversing valve, characterized in that: the valve comprises a valve body, wherein a first communication port is formed in the lower end of the valve body, a second communication port is formed in the side face of the valve body, a valve core which is matched with the valve body and transversely moves is arranged in the valve body, and the valve core and the valve body are arranged in a sealing mode at the left limit position and the right limit position of the valve core;

2. A reversing valve according to claim 1, wherein: the driving piece is an air cylinder.

3. A reversing valve according to claim 1, wherein: the valve rod penetrates through the valve core and is fixedly connected with the output shaft of the driving piece, the valve rod is of a bolt structure, the valve rod and the output shaft of the driving piece are provided with a first locking nut for fixing the valve rod and the output shaft, and the valve rod is provided with a second locking nut for positioning the valve core.

4. A reversing valve according to claim 1, wherein: and one end of the valve core, which is far away from the driving piece, is provided with a chamfer, and at the left limit position of the valve core, the chamfer extends into the ventilation end cover and is arranged in a contact manner.

5. A reversing valve according to claim 1, wherein: the structure of the ventilation end cover is the same as that of the fixed end cover, the ventilation end cover and the fixed end cover are symmetrically arranged on two sides of the valve body, the inner diameter of the ventilation end cover is smaller than the diameter of the sealing surface of the valve body, and second sealing rings for sealing are arranged between the ventilation end cover and the valve body and between the fixed end and the valve body.

6. A reversing valve according to any of claims 1 to 5, wherein: the ventilation end cover and the fixed end cover are steel plate stamping integrated structures, the ventilation end cover and the fixed end cover are fixed on the valve body through screws or bolts, and the valve body is an aluminum profile extrusion forming structure.

7. A reversing valve according to any of claims 1 to 5, wherein: the valve core is made of polyurethane, a first sealing table surface and a second sealing table surface are arranged at the lower end of the valve body, the first sealing table surface corresponds to the right limit position of the valve core, and the second sealing table surface corresponds to the left limit position of the valve core.

8. A reversing valve according to any of claims 1 to 5, wherein: the ventilation hole is a plurality of and relative the axis equipartition setting of ventilation end cover, the ventilation hole be with the fan-shaped hole of ventilation end cover concentric circles.

9. A vacuum loader using the diverter valve of claim 1, wherein: the vacuum pump comprises a main body, the switching-over valve sets up the upper end of main part, first intercommunicating pore is sealed to be set up the upper end of main part and rather than inside intercommunication, sealed being equipped with the coupling on the second intercommunicating pore, the coupling passes through the hose and is connected with the vacuum pump.

10. A vacuum loader using a diverter valve according to claim 9, characterized in that: a first sealing ring is arranged between the first communication port and the main body.