Three-way valve for powder conveying

Abstract

The utility model discloses a three-way valve for powder transmission, which comprises a ventilation shell, a ventilation baffle plate arranged in the ventilation shell and a driving component used for driving the ventilation baffle plate to rotate, the ventilation baffle plate is arranged in the ventilation shell through a bearing, the driving component is arranged outside the ventilation shell, and the ventilation baffle plate is arranged in the ventilation shell through a bearing. Two sets of positioning assemblies used for limiting the two states of the ventilation baffle and two sets of sensing pieces used for recognizing and controlling the two states of the driving assembly are further arranged outside the ventilation shell, and switching of the communicating states of the three channel openings in the ventilation shell is achieved through rotation of the ventilation baffle. The three-way valve is simple in internal structure, powder accumulation in the three-way valve can be effectively avoided, blockage is avoided, powder conveying paths can be changed through simple rotation, and operation is easy and convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve technical field especially a three -way valve for powder transmission. BACKGROUND

[0002] If two transmission paths are provided or the transmission path needs to be switched in the pipeline transmission process of powder, in order to save manufacturing cost, three -way valves are used to replace the separate transportation pipeline built for each transmission path, but due to the complex internal structure of the traditional three -way valve, the powder is easy to accumulate in the three -way valve, which affects the transmission efficiency, and even causes blockage. SUMMARY

[0003] In view of the above technical problems, the utility model provides a three -way valve for powder transmission, the internal structure of the three -way valve is simple, can effectively avoid the accumulation of powder in the three -way valve, avoid blockage, through simple rotation, the change of powder transmission path can be realized, and the operation is simple.

[0004] A three -way valve for powder transmission, including the air exchange shell, the air exchange baffle for driving the air exchange baffle rotation is installed in the air exchange shell and the drive assembly, the air exchange baffle is installed in the air exchange shell through the bearing, the drive assembly is installed outside the air exchange shell, the air exchange shell is also equipped with two groups of positioning assembly for limiting the two states of the air exchange baffle and two groups of sensing piece for identifying and controlling the two states of the drive assembly, and the communication state between three channel openings in the air exchange shell is switched through the rotation of the air exchange baffle.

[0005] As a preferred of the above technical scheme, the air exchange shell top is equipped with channel opening one, and the bottom is equipped with channel opening two and channel opening three side by side, when the air exchange shell rotates to the upper and lower ends and respectively with the right side edge of channel opening one and channel opening two abut, channel opening one and channel opening two are communicated, when the air exchange shell rotates to the upper and lower ends and respectively with the left side edge of channel opening one and channel opening three abut, channel opening one and channel opening three are communicated.

[0006] As a preferred of the above technical scheme, the drive assembly includes a cylinder, the output shaft of the cylinder is rotatably connected with a rotating force arm through a pin shaft, the air exchange baffle is fixed with a positioning rod connected with the bearing on the front and back sides, the rotating force arm is fixedly connected with one of the positioning rods, and the rotating force arm is integrally formed with a stop block matched with the positioning assembly.

[0007] As a preferred of the above technical scheme, the positioning assembly includes a positioning seat, and a screw is threadedly connected to the positioning seat.

[0008] As the preferred technical scheme of the above, the inductor comprises a micro switch and two groups of trigger keys for triggering the micro switch, and the trigger keys are fixed on the rotating force arm.

[0009] As the preferred technical scheme of the above, the three channel openings in the ventilation shell are each provided with a sealing gasket used in cooperation with the ventilation baffle.

[0010] The beneficial effects of the present application are as follows:

[0011] 1. Simple structure, easy installation, low production cost.

[0012] 2. Simple internal structure, can effectively avoid the accumulation of powder in the three-way valve, avoid blockage, through simple rotation, the powder transmission path can be changed, simple operation. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 The present application is a structural schematic view.

[0014] Fig. 2 The present application is a sectional view.

[0015] Fig. 3 The present application is a structural schematic view of the ventilation baffle.

[0016] The reference signs are as follows: 1-ventilation shell, 2-ventilation baffle, 3-driving assembly, 301-cylinder, 302-pivot, 303-rotating force arm, 304-stop block, 4-bearing, 5-positioning assembly, 501-positioning seat, 502-screw, 6-inductor, 601-micro switch, 602-trigger key, 7-channel opening one, 8-channel opening two, 9-channel opening three, 10-positioning rod, 11-gas conveying pipeline. DETAILED DESCRIPTION

[0017] The technical scheme of the present application will be described clearly and completely in combination with the drawings of the present application. Based on the embodiments of the present application, all other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the present application.

[0018] For example, Figs. 1-3The utility model provides a three-way valve for powder transmission, including the air exchange casing 1, the air exchange baffle 2 of installing in air exchange casing 1 and the drive assembly 3 for driving the rotation of air exchange baffle 2, air exchange baffle 2 is installed in air exchange casing 1 through bearing 4, drive assembly 3 is installed outside air exchange casing 1, and two sets of positioning assembly 5 for limiting two states of air exchange baffle 2 and two sets of inductive piece 6 for the identification control of two states of drive assembly 3 are further equipped outside air exchange casing 1, and the switching of the communication state between three channel ports in air exchange casing 1 is realized through the rotation of air exchange baffle 2.

[0019] In the embodiment, the air exchange casing 1 is provided with a channel port one 7 at the top, and a channel port two 8 and a channel port three 9 are arranged side by side at the bottom. When the air exchange casing 1 is rotated to the right side edge of the channel port one 7 and the channel port two 8 at the top and bottom respectively, the channel port one 7 and the channel port two 8 are communicated. When the air exchange casing 1 is rotated to the left side edge of the channel port one 7 and the channel port three 9 at the top and bottom respectively, the channel port one 7 and the channel port three 9 are communicated, as shown in the figure. Fig. 2

[0020] In the embodiment, the drive assembly 3 includes a cylinder 301. The output shaft of the cylinder 301 is rotationally connected with a rotating force arm 303 through a pin shaft 302. The air exchange baffle 2 is fixed with a positioning rod 10 connected with the bearing 4 on the front and back sides. The rotating force arm 303 is fixedly connected with one of the positioning rods 10. The rotating force arm 303 is integrally formed with a stop block 304 used in cooperation with the positioning assembly 5.

[0021] In the embodiment, the positioning assembly 5 includes a positioning seat 501. The positioning seat 501 is threadedly connected with a screw 502.

[0022] In the embodiment, the inductive piece 6 includes a micro switch 601 and two sets of trigger keys 602 used for triggering the micro switch 601. The trigger keys 601 are fixed on the rotating force arm 303. In the embodiment, the trigger keys 602 are screws.

[0023] In the embodiment, the three channel ports in the air exchange casing 1 are each provided with a sealing gasket used in cooperation with the air exchange baffle 2. The sealing gasket is not shown in the drawings.

[0024] ​In the embodiment, the longitudinal section of the air changing shell 1 is isosceles trapezoidal, the air channel opening one 7, the air channel opening two 8 and the air channel opening three 9 are respectively connected with the air conveying pipeline 11, the gap between the front and back sides of the air changing baffle 2 and the air changing shell 1 is very small, the penetration and adhesion of the powder can be avoided, when the air changing shell 1 rotates to the upper and lower ends and respectively abuts against the right side edges of the air channel opening one 7 and the air channel opening two 8 to communicate the air channel opening one 7 and the air channel opening two 8, one group of microswitches 601 is triggered, the air cylinder 301 stops rotating, and one group of screws 502 can just limit the block 304, preventing the rotary force arm 303 from over-rotating due to inertia, when the air channel opening one 7 and the air channel opening three 9 need to be communicated, the air cylinder 301 reversely acts on the other group of sensing pieces 6 and the positioning assembly 5 to act.

[0025] The above is only the preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can be variously changed and modified. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A three-way valve for powder transport, characterized in that: The device includes a ventilation housing, a ventilation baffle installed inside the ventilation housing, and a drive assembly for driving the ventilation baffle to rotate. The ventilation baffle is installed inside the ventilation housing via bearings, and the drive assembly is installed outside the ventilation housing. The outside of the ventilation housing is also provided with two sets of positioning components for limiting the two states of the ventilation baffle and two sets of sensors for identifying and controlling the two states of the drive assembly. The rotation of the ventilation baffle realizes the switching of the communication state between the three channels inside the ventilation housing.

2. A three-way valve for powder conveying according to claim 1, characterized in that: The ventilation housing has a first channel opening at the top and two second and third channels openings side by side at the bottom. When the ventilation housing is rotated to the point where its upper and lower ends abut against the right edges of the first and second channels openings respectively, the first and second channels openings are connected. When the ventilation housing is rotated to the point where its upper and lower ends abut against the left edges of the first and third channels openings respectively, the first and third channels openings are connected.

3. A three-way valve for powder conveying according to claim 1, characterized in that: The drive assembly includes a cylinder, the output shaft of which is rotatably connected to a rotating arm via a pin, and positioning rods connected to the bearing are fixed on the front and rear sides of the air exchange baffle. The rotating arm is fixedly connected to one of the positioning rods, and a stop block that cooperates with the positioning assembly is integrally formed on the rotating arm.

4. A three-way valve for powder conveying according to claim 1, characterized in that: The positioning component includes a positioning seat, on which a screw is threadedly connected.

5. A three-way valve for powder conveying according to claim 3, characterized in that: The sensing element includes a micro switch and two sets of trigger keys for triggering the micro switch, and the trigger keys are fixed on the rotating arm.

6. A three-way valve for powder conveying according to claim 1, characterized in that: Each of the three passage openings inside the ventilation housing is equipped with a sealing gasket that works in conjunction with the ventilation baffle.

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