JPH0659331U - Powder injection device - Google Patents

Abstract

(57) [Summary] [Purpose] It is possible to reliably prevent the powder and granules from being bitten, and to smoothly perform the rocking operation of the damper. Be able to do it. [Structure] A pair of guide plates 8 are provided at both end portions of the damper 6.
8 is attached. Each guide plate 8 is located between the casing wall 1a and the side wall 2a of the charging cylinder 2, and is overlapped with the side wall 2a of the charging cylinder 2 by a slight amount L in the vertical direction. Although the gap 10 between each guide plate 8 and the side wall 2a of the charging cylinder 2 is extremely small, the gap 9 between each guide plate 8 and the casing wall 1a is set to be large enough for the powder particles P to pass through. ing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a powder / granule charging device configured to switch the powder / granular charging path by swinging a damper.

[0002]

[Background of device]

 Generally, in this type of device, as shown in FIGS. 6 and 7, a rectangular plate-shaped damper 6 is rotatably supported in the casing 1, and the rocking operation of the damper 6 causes the powder granules P to be fed into the feeding path 4. 5 is switched, but if the damper 6 is simply provided in this way, the granular material P enters into the minute gap 9a between the damper 6 and the casing 1 and is bitten therein. It is difficult to perform the rocking operation smoothly.

Therefore, in order to solve such a problem, as shown in FIGS. 8 and 9, semicircular guide plates 8a and 8a are attached to both end portions of the damper 6, and the guide plate 8a is attached to the casing 1. It has been proposed to attach a guide plate 8b that inclines inward. That is, the particles P are guided between the guide plates 8a, 8a by the guide plates 8b, 8b so that the particles P do not enter between the damper 6 and the casing 1.

However, even with such a device devised in this way, since the granular material P dropped between the guide plates 8a, 8a collides against the damper 6 and bounces off, especially at the free end side of the damper 6. Since the vertical distance from the damper 6 to the peripheral edge of the guide plate 8a is small, the rebounded powder particles P jump out of the guide plate 8 through the gap 9b between the guide plate 8a and the guide plate 8b. As a result, the granular material P is caught in the minute gap 9c between the guide plate 8 and the casing 1, and the smooth swing of the damper 6 is hindered.

[0005]

[Problems to be solved by the device]

 The present invention has been made in view of the above circumstances, and provides a powdery or granular material charging device capable of reliably preventing the powdery or granular material from being caught and smoothly performing the swinging operation of the damper. That is the purpose.

[0006]

[Means for Solving the Problems]

 In order to solve this problem, in the powdery or granular material charging device according to claim 1, a powdery or granular material charging cylinder is vertically provided at the upper portion and first and second chutes are arranged at the lower portion in a front and rear direction to be connected to each other. The second powder and granular material that is axially supported in the casing and in the lower direction of the charging cylinder in the casing, opens the flow path of the first granular material from the charging cylinder to the first chute, and opens from the charging cylinder to the second chute. A damper that is rocked back and forth between a first switching position that shuts off the flow path and a second switching position that opens the second powder flow path and shuts off the first powder flow path, and both sides of the damper. Attached to the end, it is close to the outer surface of the charging cylinder in the left-right direction and has a gap between the casing side wall and the casing so that powder particles can pass therethrough, and it is slightly overlapped with the charging cylinder in the vertical direction. And a pair of left and right guide plates. In the powder and granular material charging device according to claim 2, a casing in which a powdery or granular material charging cylinder is vertically provided at an upper portion and first and second chutes are arranged at the lower and front sides in a continuous manner. A first damper that is pivotally supported in front of and above the first opening surface portion facing the first chute, which is the front half portion of the lower opening surface of the throw-in cylinder, and swings to open and close the first opening surface portion. And a second half of the lower end opening surface of the throw-in cylinder, which is pivotally supported rearward and upward of the second opening surface portion facing the second chute to swing the second opening surface portion to open and close. It is proposed to equip a damper.

[0007]

【Example】

 1 and 2 show the first embodiment, in which a charging cylinder 2 is vertically provided above the casing 1. The charging cylinder 2 is connected to a main chute 3 for dropping and discharging the powder P from a powder storage tank (not shown), and the left and right walls 2a, 2a parallel to the left and right walls 1a, 1a of the casing 1. And a front and rear wall 2b, 2b inclined downward and in the opposite direction. At the bottom of the casing 1, first and second shoots 4 and 5 are arranged in a front-rear manner so as to be connected to each other.

Inside the casing 1, a trough-shaped damper 6 whose only one surface is used as the flow lower surface of the powder P is arranged. That is, the damper 6 has a rectangular plate shape, and an intermediate portion thereof is pivotally supported 6a on the casing side walls 1a, 1a immediately below the charging cylinder 2 so as to be swingable back and forth. The damper 6 opens the first granular material flow path 7a from the charging cylinder 2 to the first chute 4 and operates the second granular material flow path from the charging cylinder 2 to the second shoot 5 by an operating mechanism (not shown). A first switching position (solid line position in FIG. 1) for blocking 7b and a second switching position (chain line position in FIG. 1) for opening the second granular material flow path 7b and blocking the first granular material flow path 7a. It is designed to be rocked over. The shape of the lower ends of the input cylinder walls 2a, 2a is an arc shape with the swing fulcrum 6a of the damper 6 as the center.

A pair of left and right guide plates 8 are attached to the opposite ends of the damper 6 so as to face each other. Each guide plate 8 has a semicircular shape centered on the swing fulcrum 6a of the damper 6, and is close to the outer surface of the charging cylinder 2 in the left-right direction, and the powder particles P are sufficiently present between the guide plate 8 and the casing side wall 1a. It has a gap 9 through which it can pass and is slightly overlapped with the charging tube 2 in the vertical direction. The vertical lapping amount L 1 and the left-right distance S between the guide plate 8 and the charging cylinder wall 2a do not cause the granular material P that collides with the damper 6 and bounces back from the gap 10 between the two 2a, 8 to the outside of the guide plate 8. As described above, the size is appropriately set according to the size of the powder P or the like. In this embodiment, L = 15 mm and S = 5 mm are set. Further, the left-right distance W between the casing side wall 1a and the guide plate 8 is such that, even if the granular material P jumps out of the gap 10, the gap 9 between the two is prevented. It is appropriately set in accordance with the size of the powder P and the like so that it easily drops from the gap 9 to the chutes 4 and 5. In this embodiment, W = 43 mm is set.

According to the powdery or granular material charging device configured as described above, when the damper 6 is positioned at the first switching position (or the second switching position), the second powdery or granular material flow path 7b (or 1 The granular material flow path 7a) is blocked, and the granular material P is guided from the charging cylinder 2 to the damper 6 and the guide plates 8 and 8 while the first granular material flow path 7a (or the second granular material flow path). It passes through the path 7b) and is discharged from the first shoot 4 (or the second shoot 5). That is, the closing paths 4 and 5 can be switched by swinging the damper 6.

At this time, a part of the granular material P charged from the charging cylinder 2 collides with the damper 6 and bounces upward, but the guide plate 8 moves up and down with the outer surface of the side wall 2a of the charging cylinder 2 close. Since it is wrapped in the direction, even if the granular material P bounces up to the position of this lap portion, it does not jump out of the guide plate 8 through the gap 10 between the two and 8.

In the unlikely event that the scattered powder particles P fly out of the guide plate 8 through the gap 10, it is sufficient that the powder particles P can pass through the gap 9 between the guide plate 8 and the casing side wall 1a. Since the size is W, the powder P is not discharged or accumulated in the gap 9 but is discharged from the chutes 4 and 5 through the gap 9 as it is. It should be noted that since the discharge amount of the powder or granular material P is extremely small, the powder or granular material charging device is not generally used for the purpose of strictly controlling the supply amount. It doesn't matter at all.

Therefore, the granular material P is not caught between the damper 6 or the guide plate 8 and the casing side wall 1a, and the occurrence of the situation in which the swing of the damper 6 is hindered is surely caused. It is avoided, and the switching of the closing paths 4 and 5 by the damper 8 can always be performed smoothly and satisfactorily.

It should be noted that the configuration of the powdery or granular material charging device according to the present invention is not limited to the above-mentioned embodiment, and can be appropriately improved and changed without departing from the basic principle of the present invention. For example, as shown in FIG. 3, one end of the damper 6 may be pivotally supported 6a, and both sides of the damper 6 may be used as the flow lower surface of the powder P. Moreover, it is not always necessary to wrap the charging cylinder 2 and the guide 8 over the entire lower end edge of the charging cylinder wall 2a as described above, and as shown in FIG. It suffices to wrap it to the extent that P can be prevented from entering.

4 and 5 show a second embodiment. In this embodiment, the lower end edges of the charging cylinder walls 2a, 2a are formed in a V shape, and the lower end of the charging cylinder 2 is formed. The first half of the opening surface is configured as a first opening surface portion 2c facing the first chute 4, and the second half portion is configured as a second opening surface portion 2d facing the second chute 5. Then, the first damper 16 is axially supported 16a in front of and above the first opening surface portion 2c, and the second damper 26 is axially supported 26a in front of and above the second opening surface portion 2d. The opening face portions 2c and 2d can be opened and closed separately by swinging 26.

According to this structure, even if the guide plate 8 is not provided, the granular material P is not caught between the dampers 16 and 26 and the casing 1, and the damper can be swung smoothly. . Of course, by placing both dampers 16 and 26 in the open position, it is possible to simultaneously discharge both shoes 4 and 5.

[0017]

[Effect of device]

 As is clear from the above description, according to the present invention, it is possible to reliably prevent the powder or granules from being bitten, and to smoothly perform the swinging operation of the damper. It can be performed satisfactorily and efficiently.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view showing a first embodiment of a powdery or granular material charging device according to the present invention.

FIG. 2 is a vertical sectional front view taken along the line II-II of FIG.

FIG. 3 is a vertical sectional side view showing a modification thereof.

FIG. 4 is a vertical cross-sectional side view showing a second embodiment of the powdery or granular material charging device according to the present invention.

5 is a vertical cross-sectional rear view taken along the line VV of FIG.

FIG. 6 is a vertical sectional side view showing a conventional device.

7 is a vertical cross-sectional rear view taken along the line VII-VII of FIG.

FIG. 8 is a vertical cross-sectional side view showing another conventional device.

9 is a vertical cross-sectional rear view taken along the line IX-IX in FIG.

[Explanation of symbols]

1 ... Casing, 1a ... Casing side wall, 2 ... Input cylinder,
2a ... Side wall, 2c ... 1st opening surface part, 2d ... 2nd opening surface part, 4 ... 1st chute, 5 ... 2nd chute, 6 ... Damper, 7a ... 1st granular material flow path, 7b ... 2nd Powder flow path, 8 ... Guide plate, 9 ... Gap, 16 ... First damper, 26
… Second damper, P… Powder granules.

Claims (2)

[Scope of utility model registration request] 1. A casing in which a powder feeding cylinder is vertically provided at an upper portion and first and second chutes are provided at a lower portion in a front-rear direction, and a casing is axially supported in a lower direction of the feeding cylinder in the casing. The first switching position and the second granular material that open the first powdery material flow path from the charging cylinder to the first chute and block the second powdery material flow path from the charging cylinder to the second chute A damper that is rocked back and forth over a second switching position that opens the flow path and shuts off the first granular material flow path;
Attached to both ends of the damper, it is close to the outer surface of the charging cylinder in the left-right direction, has a gap between the side wall of the casing and enough to allow the powder and granules to pass, and is vertical to the charging cylinder. A powder and granular material charging device comprising a pair of left and right guide plates that are slightly polymerized. 2. A casing in which a powder feeding cylinder is vertically provided at an upper portion and first and second chutes are provided at the lower portion in a front and rear direction so as to be connected to each other, and a first half portion of a lower end opening surface of the feeding cylinder. A first damper pivotally supported in front of and above the first opening surface portion facing the first chute and swinging to open and close the first opening surface portion; and a second half portion of the lower end opening surface of the charging cylinder. A powdery or granular material charging device comprising: a second damper that is axially supported behind and above a second opening surface portion facing the second chute and that swings to open and close the second opening surface portion.