CN216519703U - Rotary sand valve with adjustable sand output - Google Patents

Abstract

The utility model relates to the technical field of sand valves, and discloses a rotary sand valve with adjustable sand discharge amount, which comprises a valve seat, wherein an upper feed inlet and a lower discharge outlet are formed in the valve seat, a rotatable valve core is arranged in the valve seat, and a sand storage groove is formed in the side surface of the valve core corresponding to the upper feed inlet and the lower discharge outlet.

Description

Rotary sand valve with adjustable sand output

Technical Field

The utility model relates to the technical field of sand valves, in particular to a rotary sand valve with adjustable sand output.

Background

In various application scenes in the paint removing industry, special working conditions need to adjust the sand flow rate of paint removal, so that a special device for adjusting the sand flow rate is needed, and the device is generally called a sand valve.

The sand valve that mainly adopts at present is reciprocating type sand valve structure of gas accuse, its leading principle utilizes electrical switch to admission valve and normal close formula sand valve control signal that sends, compressed air gets into, strong spring in the sand valve is opened under the effect of thimble, the inside gluey core is glued under the effect of thimble, it produces the clearance to control, make flow control pipe opened in the short time, can begin to remove paint, when electrical switch closed, the thimble resets under the application of spring effort, thereby close flow control pipe. The time for ejecting the rubber core by the thimble can be controlled by changing the duration and the frequency of the control signal, so that the opening time of the flow regulating pipe is changed, and the paint removing flow can be changed.

However, the flow regulation of the above pneumatic control reciprocating sand valve structure mode is not reliable, and the main reason is that the pneumatic control thimble spring is used for reciprocating the switch to remove paint, so that the flow of a paint removing outlet is unevenly distributed, namely, when the electric control switch is turned on, the sand outlet pipeline is mixed with sand and compressed air, when the electric control switch is turned off, only the compressed air is in the sand outlet pipeline, and because the electric control switch is discontinuously turned on and off, the final sand outlet pipeline is subjected to intermittent paint removal. Such intermittent paint removal can result in non-uniform grit flow, directly affecting the surface quality of the final paint-removed workpiece. Because the strong spring impacts the inner wall of the other side at a very high frequency under the control of the electric control switch, complex alternating load and fatigue load are generated, the service life of the product is very short, and meanwhile, the noise is huge.

SUMMERY OF THE UTILITY MODEL

In view of the defects of the background art, the utility model provides a rotary sand valve with adjustable sand output, and aims to solve the technical problems of uneven sand output flow, small sand output adjustment amount, short service life, high noise and the like of the conventional sand valve.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a go out sand volume adjustable rotation type sand valve, includes the disk seat, last feed inlet and the bottom outlet of having seted up on the disk seat, be equipped with rotatable case in the disk seat, the case with set up on the side that upper feed inlet and bottom outlet correspond and store up the sand groove.

In a certain embodiment, the valve core is cylindrical, the side surface of the valve core is arranged corresponding to the upper feeding port and the lower discharging port, and a plurality of sand storage grooves are arranged on the side surface of the valve core at intervals.

In a certain embodiment, the upper feed inlet is connected with an upper joint, the upper joint is connected with a pneumatic ball valve, the lower discharge outlet is connected with a lower joint, and the lower joint is connected with an upper joint of a four-way joint.

In one embodiment, a magnet is mounted to the lower fitting of the four-way fitting.

In a certain embodiment, the utility model further comprises a rotating shaft, bearings are respectively arranged on two sides of the valve core in the valve seat, and the rotating shaft penetrates through the valve core and the two bearings.

In a certain embodiment, at least one first sealing ring is arranged between the left portion of the side surface of the valve core corresponding to the upper feeding port and the lower discharging port and the valve seat, at least one second sealing ring is arranged on the right portion of the side surface of the valve core corresponding to the upper feeding port and the lower discharging port, and the sand storage tank is arranged between the adjacent nearest first sealing ring and the nearest second sealing ring.

In a certain embodiment, framework oil seals are respectively arranged at two ends of the valve core in the valve seat, and the rotating shaft penetrates through the framework oil seals.

In one embodiment, a third seal ring is disposed between the bearing and the valve element.

In a certain embodiment, the valve seat is further provided with an air sealing joint, and the air sealing joint is communicated with a cavity of the valve seat, wherein the bearing is arranged in the cavity.

In a certain embodiment, the present invention further comprises a driving device, wherein the driving device comprises a servo motor, a speed reducer and a coupling, a rotating shaft of the servo motor is connected to a transmission input of the speed reducer, and a transmission output end of the speed reducer is connected to the rotating shaft through the coupling.

Compared with the prior art, the utility model has the beneficial effects that: when the reciprocating type sand valve is in actual use, sand enters the sand storage grooves on the valve seat and the valve core in sequence from the upper feeding port, when the valve core rotates to enable the sand storage groove with the sand to move to the lower discharging port, the sand in the sand storage groove flows out from the lower discharging port, when the valve core rotates at a constant speed, the flow of the sand flowing out from the lower discharging port is uniform, when the rotating speed of the valve core is increased, the sand outlet amount can be increased, and finally, because the sand is discharged by rotation instead of impact, the existing reciprocating type sand valve is low in noise during use, small in device loss and longer in service life.

Drawings

FIG. 1 is a schematic structural view of a sand valve in an embodiment;

FIG. 2 is a schematic illustration of an internal cross-section of the sand valve of FIG. 1;

fig. 3 is a second structural schematic diagram of the sand valve in the embodiment.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1-2, a rotary sand valve with adjustable sand output comprises a valve seat 1, wherein an upper feed inlet and a lower discharge outlet are formed in the valve seat 1, an upper joint 2 is installed at the upper feed inlet, a lower joint 3 is installed at the lower discharge outlet, a rotatable valve core 4 is arranged in the valve seat 1, and a sand storage tank 5 is formed in the side surface of the valve core 4 corresponding to the upper feed inlet and the lower discharge outlet.

During the in-service use, sand from top connection 2 enters into in the sand storage tank 5 on disk seat 1 and the case 4 in proper order, and when case 4 rotated and made sand storage tank 5 with sand move to lower clutch 3, the sand of sand storage tank 5 flowed out from the lower clutch.

Specifically, as shown in fig. 2, the valve core 4 is cylindrical, the side surface of the valve core 4 is arranged corresponding to the upper feed port and the lower discharge port, and a plurality of sand storage grooves 5 are arranged on the side surface of the valve core 4 at intervals. When a plurality of adjacent arc-shaped helical teeth are arranged on the side surface of the valve core 4, the area between the adjacent arc-shaped helical teeth is a single sand storage tank 5.

As can be seen from fig. 2, the present invention further includes a rotating shaft 11, bearings 12 are respectively disposed inside the valve seat 2 on two sides of the valve core 4, and the rotating shaft 11 passes through the valve core 4 and the two bearings 12. In the present embodiment, the bearing 12 is a rolling bearing.

As can be seen from fig. 2, the valve seat 1 is provided with framework oil seals 13 at two ends of the valve core 4, and the rotating shaft 4 penetrates through the framework oil seals 13. In actual use, the sealing of the rotating shaft 11 is realized through the framework oil seal 13.

As can be seen from fig. 2, two first sealing rings 9 are arranged between the left portion of the side surface of the valve core 4 corresponding to the upper feeding port and the lower discharging port and the valve seat 1, two second sealing rings 10 are arranged on the right portion of the side surface of the valve core 4 corresponding to the upper feeding port and the lower discharging port, and the sand storage tank 5 is arranged between the adjacent nearest first sealing ring 9 and the second sealing ring 10. In actual use, the first sealing ring 9 and the second sealing ring 10 are used for sealing the valve core 4 and the valve seat 1, so that sand on the valve core 4 is prevented from entering the bearing 12 and the framework oil seal 13, and in addition, a third sealing ring 11 is arranged between the bearing 13 and the valve core 4 for better sealing effect. In practical use, the number of the first sealing ring 9 and the second sealing ring 10 can be increased or decreased according to the sealing requirement.

As can be seen from fig. 2, the valve seat 1 is also provided with a gas seal joint 18, and the gas seal joint 18 is communicated with the cavity in the valve seat where the bearing 12 is arranged. In actual use, the valve seat 1 is inflated through the air gap joint 18, and the bearing 12 and the framework oil seal 13 can be sealed.

In combination with the above, the present invention uses the first seal ring 9, the second seal ring 10, the third seal ring 11, the skeleton oil seal 13 and the air gap joint 18 together to realize multiple sealing, and the sealing effect is good.

Referring to fig. 3, in this embodiment, the present invention further includes a driving device, where the driving device includes a servo motor 14, a speed reducer 15, and a coupler 16, a rotating shaft of the servo motor 14 is connected to a transmission input end of the speed reducer 15, and a transmission output end of the speed reducer 15 is connected to the rotating shaft 11 through the coupler 16. In actual use, the servo motor 14 rotates to drive the rotating shaft 11 to rotate, and further drive the valve core 4 to rotate in the valve seat 1. The rotation speed of the rotary shaft 11 can be precisely controlled by the servo motor. The utility model can be applied to the scene with small sand production amount by setting the speed reduction of the speed reducer 15. In the present embodiment, the reduction gear 15 is attached to the reduction gear bracket 17.

Referring to fig. 3, in this embodiment a pneumatic ball valve 6 is connected to the upper joint, and the activation ball valve 6 is used to seal the sand valve to the upper end tank connected to the upper joint 2 of the sand valve. When pneumatic ball valve 6 opened, because there is the reason of pressure in the jar in the upper end jar, can crowd into the sand valve with the abrasive material in the jar inside, when pneumatic ball valve 6 closed, cut off the connection with sand valve and upper end jar to realize the pressurize in the upper end jar, the pressure in the upper end jar can not reveal.

Referring to fig. 3, the lower joint 3 is connected to the upper joint of the four-way joint 7. The lower joint of the four-way joint 7 is provided with a magnet 8. In actual use, the left joint or the right joint of the four-way joint 7 is ventilated, and wind blows out the other un-ventilated joint of the sand four-way joint 7 falling from the lower joint, so that sand is sprayed out in sequence. When in actual use, can adsorb the ferromagnetism impurity in the sand material through magnet 8, and then avoid this sex impurity influence of iron in the sand material to remove lacquer.

In conclusion, when the sand valve is in actual use, sand sequentially enters the sand storage groove 5 on the valve seat 1 and the valve core 4 from the upper feeding port, when the valve core 4 rotates to enable the sand storage groove 5 with the sand to move to the lower discharging port, the sand in the sand storage groove flows out from the lower discharging port and flows into the four-way joint 7, when the valve core 4 rotates at a constant speed, the flow of the sand flowing out from the lower discharging port is uniform, when the rotating speed of the valve core 4 is increased, the sand discharging amount can be increased, and finally, as the sand is discharged by rotating instead of impacting, compared with the existing reciprocating type sand valve, the sand valve is low in noise during use, small in device loss and long in service life.

In light of the above, it is clear that many changes and modifications can be made by the workers in the field without departing from the spirit and scope of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (10)

1. The utility model provides a go out sand volume adjustable rotation type sand valve which characterized in that, includes the disk seat, last feed inlet and the bottom outlet of having seted up on the disk seat, be equipped with rotatable case in the disk seat, the case with set up on the side that feed inlet and bottom outlet correspond and store up the sand groove.

2. The rotary sand valve with the adjustable sand outlet amount according to claim 1, wherein the valve core is cylindrical, the side surface of the valve core is arranged corresponding to the upper feed port and the lower discharge port, and a plurality of sand storage grooves are arranged on the side surface of the valve core at intervals.

3. The rotary sand valve with adjustable sand discharge capacity according to claim 1, wherein the upper inlet is connected with an upper joint, the upper joint is connected with a pneumatic ball valve, the lower outlet is connected with a lower joint, and the lower joint is connected with an upper joint of a four-way joint.

4. The rotary sand valve with adjustable sand outlet amount as claimed in claim 3, wherein the lower joint of the four-way joint is provided with a magnet.

5. The rotary sand valve with adjustable sand outlet amount according to claim 1 or 2, characterized in that it further comprises a rotating shaft, bearings are respectively arranged at two sides of the valve core inside the valve seat, and the rotating shaft passes through the valve core and the two bearings.

6. The rotary sand valve with the adjustable sand outlet amount according to claim 5, wherein at least one first sealing ring is arranged between the left part of the side surface of the valve core corresponding to the upper feeding port and the lower discharging port and the valve seat, at least one second sealing ring is arranged on the right part of the side surface of the valve core corresponding to the upper feeding port and the lower discharging port, and the sand storage groove is arranged between the adjacent nearest first sealing ring and the second sealing ring.

7. The rotary sand valve with adjustable sand outlet amount according to claim 6, wherein framework oil seals are respectively arranged at two ends of the valve core inside the valve seat, and the rotating shaft penetrates through the framework oil seals.

8. The rotary sand valve of claim 7 wherein a third seal is disposed between the bearing and the spool.

9. The rotary sand valve with adjustable sand discharge according to claim 7, wherein the valve seat is further provided with an air sealing joint, and the air sealing joint is communicated with a cavity of the valve seat, which is internally provided with the bearing.

10. The rotary sand valve with adjustable sand outlet amount according to claim 5, further comprising a driving device, wherein the driving device comprises a servo motor, a speed reducer and a coupler, a rotating shaft of the servo motor is connected with a transmission input of the speed reducer, and a transmission output end of the speed reducer is connected with the rotating shaft through the coupler.

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