JPH0838868A - Batch type mixing machine - Google Patents

Abstract

PURPOSE: To provide a rapid batch type mixer which can attain discharge with no residue by a simple constitution and can be used in blending corn powder, fodder, premix, or the like. CONSTITUTION: The batch type mixer is constituted of main groups to be easily disassembled which comprises a blending vessel 1, a bottom structure and a driving section. Inwalls of the blending vessel are perfectly smooth. Two oscillating doors 10, 11 are provided as a part of the bottom structure at a bottom of the blending vessel, its opening is smaller than an angle of repose of materials, an opening extends from one sidewall to another side-walls of the blending vessel and there is no crosspiece hindering product flow therebetween. It is unnecessary to provide means for exhausting air, or the like, at a product receiving portion therebelow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mixing container connected to a bottom structure for discharging by a swinging bottom door having a divided shape, and a mixing rotor having a mixing arm and a paddle provided therein. The present invention relates to a batch type mixer for mixing feed, flour and the like, which is equipped with a drive device for this mixing rotor.

[0002]

2. Description of the Prior Art Batch mixers used for mixing hard or plastic flowable materials or bulk materials are generally considered to be known. U.S. Pat. No. 4,043,540 discloses a tiltable paddle mixer with a spiral mixing vane that rotates in a trough, and a similar structure is disclosed in U.S. Pat. No. 4,509,860. And U.S. Pat. No. 3,273,863.

The mixing apparatus for feed mixing described in East German Patent No. 262961 is a mixing drum with horizontally arranged agitating blades, which are provided with upright, straight agitating arm segments. ,
The stirring arm segment has a mixing bar at its end. A plate-shaped auxiliary mixing blade is detachably fixed in the center between the segments.

A mixing device with a cylindrical mixing vessel is known from Swiss Pat. No. 648,767. In this mixing container, a rotatable mixing shaft is arranged substantially horizontally in the longitudinal axis direction, to which a group of mixing arms equipped with mixing plates is fixed. The working directions of these mixing plates are opposite in each group.

In such prior art, the ratio of diameter to length of the mixing vessel is significantly different than 1. It is also known to expel material quickly from a mixer of this kind by means of a rocking door provided at the bottom. Such a bottom swing door can be provided over the entire length of the mixer and is equipped with a self-locking operating mechanism (to prevent it from opening by itself).

[0006] It has already been proposed to divide the swinging door (bottom swinging door) for discharge in order to minimize the residual amount during discharge of the feed mixture. In this case, since the tangent angle must be larger than the angle of repose, a large swing door is required. Moreover, it requires air purification and costly surface treatment inside the mixer.

Further, European Patent No. 142003 discloses a concrete mixer having a swinging door divided into bottoms, but the operation mechanism of this double swinging door is complicated and swings. Since the rotary fulcrum of the moving door is located at a high position, the size of the swinging door becomes larger, and therefore, the adjustment of the pressing force requires an expensive steel sheet lining.

[0008]

The object of the present invention is to eliminate the above-mentioned drawbacks of the prior art and to carry out a residue-free (hygienic) discharge quickly without the need for exhaust or air circulation. It is to provide a quick mixer such as for feed.

[0009]

According to the invention, the object of the invention is to provide a rocking door of the bottom structure arranged directly below the mixing container,
The mixing container is opened in the range of the rocking door, and the opening angle of the rocking door is smaller than the repose angle of the material to be mixed, and the rocking door is closed by a locking device acting at its center. Achieved by being held in a state.

Advantageous embodiments of the invention are described in the dependent claims.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, one embodiment of the batch type mixer of the present invention will be described in detail with reference to the drawings. Here, FIG. 1 is a front view of the batch type mixer, FIG. 2 is a side view of the same, and FIG. 3 is a detailed view of the mechanism of the swing door.

The main parts that make up a batch mixer are a mixing vessel 1, a bottom structure 2 and a drive 3 with a suitable control unit. Since the mixing container 1 and the bottom structure 2 are simply connected by bolts, inspection and cleaning are very easy. The mixing vessel 1 can be made of either stainless steel or plain steel. The inner surface of the mixing container 1 is smooth and there are no reinforcements or other protrusions on the inside. There is a swinging door 4 for inspection on the side and an inlet for the materials to be mixed at the top. All seams are provided on the outside of the mixing container 1.

The ratio of length to diameter of the mixing container 1 is close to 1 (it is possible to make it smaller). A mixing rotor 6 is supported in the mixing container 1, and a driving device 3 drives the mixing rotor 6. Fixed to the mixing rotor 6 are a plurality of mixing arms 7 with paddles 8 known per se. Mixing arm 7
Is shrink-fitted to the clamp member 9, and the clamp member 9
Is fixed to the mixing rotor 6 by means of a tightening joint.

In the range of the bottom of the mixing container 1, the swing door 10,
11 is arranged as a part of the bottom structure 2 so as to be swingable around a bearing 12 or 13, respectively. The mixing container 1 is open in this range. The opening of this swing door extends from one side wall of the container to the other side wall, and there are no crosspieces or the like that interfere with the flow of the product at neither the end nor the center of the opening.

At the center between the swinging doors 10 and 11, a locking device 15 provided with a pressing roller 16 is swingably arranged around a shaft 14. Both swing doors 10 and 11 are provided with seals over their entire length in the overlapping area 17.

Each inflatable sealing tube 18 seals the opposite edge of the rocker door. The swing doors 10 and 11 are operated by a fluid type auxiliary drive device (not shown).

The pressing force of the locking device acts on the center of the swing door and is controlled by the solenoid valve with a delay. The pressing force is adjusted by the slit.

The swing doors 10 and 11 project from the side wall of the mixing container in the longitudinal direction (hygienic). Thin plate 1
Reference numeral 9 closes the space between the mixing container 1 and the bottom structure 2 and, at the same time, serves as a cable passage or the like. The materials to be mixed are sent from the charging port 5 to the mixing container 1 and mixed. When the mixing rotor 6 is stopped, the rocking device 15 is rocked to open the rocking door 10 first and then the rocking door 11 (the air in the sealing air tube 18 is evacuated before that). The open position (opening smaller than the angle of repose, i.e. the resting angle) of the rocker doors 10, 11 resembling a valve allows a controlled discharge of the mixing vessel 1 and thus illustrates special means such as exhaust or air circulation. It is not necessary to install it in the receiving passage of the product which is not. When closing the swing doors 10 and 11,
First, the swing door 11 and then the swing door 10 are swung to the closed position, and then the locking device 15 is swung to push the pressing roller 16.
Is pressed against the overlapping area of the swing doors 10 and 11 to securely close it.

[0019]

With the above-described construction, the batch type mixer of the present invention has a simple structure that does not require exhaust or air circulation, and thus has no drawbacks and no residue. There is an advantage that (satellite) emissions can be implemented quickly.

[Brief description of drawings]

FIG. 1 is a front view of a batch type mixer.

FIG. 2 is a side view of a batch type mixer.

FIG. 3 is a detailed view of a swing door of the batch type mixer.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mixing container 2 Bottom structure 3 Drive part 4 Swing door 5 for inspection 5 Input port 6 Mixing rotor 7 Mixing arm 8 Paddle 9 Clamping member 10 Swing door 11 Swing door 12 Bearing 13 Bearing 14 Shaft 15 Locking device 16 Pressing Roller 17 Overlapping range 18 Sealing tube 19 Thin plate

Claims (6)

[Claims] 1. A mixing container connected to a bottom structure for discharging by a swinging bottom door having a divided shape, a mixing rotor having a mixing arm and a paddle provided therein, and a driving of the mixing rotor. In a batch mixer for mixing feed, flour, etc., equipped with a device, the swing doors (10, 11) of the bottom structure (2) are arranged immediately below the mixing container (1),
The mixing container (1) is opened in the range of the rocking doors (10, 11), and the opening angle of the rocking doors (10, 11) is smaller than the repose angle of the material to be mixed, and Locking device (1) with a door (10, 11) acting on its center
A batch mixer characterized in that it is held closed by 5). 2. The swing doors (10, 11) are swingably arranged on bearings (12, 13) symmetrically with respect to the center at the height of a horizontal tangent to the mixing container (1). The batch type mixer according to claim 1, wherein 3. Batch mixer according to claim 1, characterized in that the inner wall of the mixing vessel (1) is smooth and the fixed parts or seams are arranged on the outer wall. 4. The swing door (10, 11) projects outward from a side wall of the mixing container (1), and the opening of the swing door is provided with a crosspiece for obstructing a product flow. Not
The batch mixer according to claim 1 or 2, wherein one side wall reaches the other side wall. 5. The mixing vessel (1) and the bottom structure (2) are connected by a bolt joint so as to be quickly separable, and a drive unit with a control device is also so rapidly separable as to the bottom. A batch mixer according to claim 1, characterized in that it is arranged on the side of the structure (2). 6. The mixing arm (7) is fixed to the mixing rotor (6) by a tightening joint, and the mixing arm (7) itself is firmly arranged by press fitting on the clamp member (9). The batch type mixer according to claim 1, wherein