JPH0129892B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mixing device for raw cotton in a spinning factory, for example, a mixing device that further mixes raw cotton supplied from a bale placka and supplies it to a mixing and batting machine or the like.

[Conventional technology]

Normally, several types of raw cotton are arranged in predetermined proportions in a bale placka, spread, and fed to a cotton blending machine, but there is a drawback that the proportion of the blended cotton is not constant and unevenness occurs. Therefore, even if the raw cotton is mixed and batted in a mixing and batting machine, it is difficult to obtain sufficient uniformity of the raw cotton fed out.
For this reason, a mixing device is placed on the inlet or outlet side of the cotton mixing machine to ensure uniformity. An overview of one example is shown in FIG.

In the figure, a mixing device 50 includes a raw cotton supply duct 51 and a plurality of reserve tanks 52a, 52b, 52c, and 52d connected to this duct.

Feeding rollers 53a, 53b, 53c, 53d and a beater 5 are provided at the bottom of each reserve tank.
4a, 54b, 54c, and 54d are provided. The raw cotton fed from the supply duct 51 is distributed to each reserve tank 52a, 52b, 52c, 52d, and the raw cotton fed out from each reserve tank is opened by beaters 54a, 54b... and the opened raw cotton is The sheets are laminated and transported laterally by a belt conveyor 55, and mixed and spread by a beater 56. That is, since the distance from each reserve tank to the beater 56 is different,
Even if the supplied raw cotton has unevenness, it is possible to make it uniform by using the above-mentioned distance, that is, the difference in transfer time. Other means include, for example, a structure shown in FIG.

The mixing device 60 shown in this example also has a raw cotton supply duct 61 and a plurality of reserve tanks 62a, 62b, 62 connected to this duct, as in the previous example.
c, 62d. However, the feeding roller is omitted at the bottom of each reserve tank in this example, and a conveyor belt 63 running in the lateral direction is arranged. 64 is a scraping lattice, 65 is a stripper roller, and 66 is a scraping roller. Each reserve tank 62a, 62
The raw cotton supplied to tanks b, 62c, and 62d falls due to its own weight, and the raw cotton from each reserve tank is stacked as shown in the figure, transferred laterally by a conveyor belt 63, and supplied to a raking lattice 64.

That is, in this case as well, as in the previous example, the fact that the distances from each reserve tank to the scraping conveyor are different is utilized.

[Problem that the invention seeks to solve]

In both of the above methods, the raw cotton fed from each reserve tank is stacked in layers on a conveyor and transferred laterally, and the difference in distance, that is, transition time, between each reserve tank and the beater or raking lattice is utilized. The raw cotton in each reserve tank needs to be fed out uniformly and traverse at the same speed, and the beater or lattice is required to uniformly scrape off the raw cotton in each layer. Therefore, there are problems such as a complicated structure and a large installation area.

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a mixing device that is small in size, simple in structure, and performs mixing effectively.

[Means for solving problems]

In order to achieve the above object, the present invention will be explained using FIGS. 1 to 4 corresponding to a first embodiment.

The mixing device 1 of the present invention includes a transport duct 5 that transports opened raw cotton by air flow, and a plurality of, for example, four, reserve tanks 6a, 6b, 6c, and 6d connected to the transport duct 5. Feeding rollers 12a, 12b, 12c, 12d, beaters 13a, 13b, 13c, 13d, and a mixing transfer mechanism 15 common to each reserve tank are provided below each reserve tank 6a, 6b.... This mixing transfer mechanism 15 mixes and transfers the spread cotton supplied from each reserve tank using an air flow. Furthermore, the present invention is characterized in that the heights of the respective reserve tanks 6a, 6b... are made different from each other, and preferably, the heights increase as they reach the downstream side of the reserve tank 6a on the raw cotton supply side. , configure successively higher.

[Effect]

In the present invention, the raw cotton supplied by the above-mentioned means is distributed to each reserve tank via a transport duct, and the accumulated cotton in the reserve tank is sequentially fed out, opened by a beater, and supplied to a mixing transfer mechanism where it is mixed. In this case, since the heights of the reserve tanks are different, the time from feeding to unwinding the accumulated raw cotton in each reserve tank is different. Therefore, the raw cotton unwinding from each reserve tank is the same as the raw cotton supplied from the previous process. The mixing and transfer mechanism mixes the raw cotton supplied at different times from the previous process, and even if there are irregularities in the supplied raw cotton, it is made homogeneous and the mixing is done by air flow, so it can be processed immediately. It can be supplied to the next process.

〔Example〕

1 to 4 show a first embodiment. The example shown is a mixing machine (not shown) that mixes opened raw cotton supplied from Beer Platzka (not shown).
Mixing device 1
, a suction blower 2 that sucks raw cotton from a bale placka, a transport duct 5 that guides the raw cotton sent out by the suction blower 5, and a plurality of, for example, four reserve tanks 6a, 6b, which are branched and connected to this.
6c and 6d. The cotton suction blower 2 includes a receiving duct 3 and a discharge duct 4 connected to a bale plugger, and the discharge duct 4 is connected to a switching damper 7.

The transport duct 5 is composed of a pair of branch transport ducts 5a and 5b, each connected to a switching damper 7, and each branch transport duct 5a and 5b has branch pipes 10a, 10b, 10c, 10d and 11a and 11b, respectively. , 11c, 11d to each reserve tank 6a, 6b, 6c, 6d. Although not shown, the switching damper 7 is equipped with a rotary type, that is, an oscillating nozzle, and alternately blows the airflow discharged from the blower 2 into the transport ducts 5a and 5b to generate a pulsating flow. As a result, the switching damper 7 is switched to one side, for example, the branch transport duct 5a, and the supplied raw cotton moves through the transport duct 5a along with the suction airflow, and the switching damper 7 is switched to the other branch transport duct 5b. At this time, the flow velocity in the branch transport duct 5a decreases and becomes zero wind velocity, and the raw cotton flows into each reserve tank 6a,
It is dropped and supplied to 6b... That is, by the switching operation of the switching damper 7, a pulsating flow is applied alternately to each branch transport duct 5a, 5b, and raw cotton is transferred and distributed to each reserve tank.

In order to ensure good distribution to each reserve tank, it is important to increase the switching speed of the switching damper.

In FIG. 4, reference numeral 8 denotes a partition plate, which is provided as necessary to prevent the raw cotton from moving from one branch pipe to the other branch pipe due to the pulsating flow.

Below each of the reserve tanks 6a, 6b... are feed rollers 12a, 12b, 12c, 1, respectively.
2d and beaters 13a, 13b, 13c, 13d
Furthermore, a mixing and transporting mechanism 15 is provided for mixing and transporting the original surface scraped by each of these beaters using an air flow. This mixing transfer mechanism 15 consists of a delivery blower 16 and a suction duct 17 connected to the suction side of this blower. Suction duct 17
Alternatively, the lower part of the mixing device 1 may be configured as a housing. A guide block is provided between the beaters 13a, 13b, respectively, and the lower part of the beater protrudes from the lower surface of the guide block, is exposed in the suction duct 17, and rotates in the same direction as the airflow in the duct. preferable. This is effective in peeling off the raw cotton caught in the beaters 13a, 13b, . . . by the centrifugal force and airflow caused by the rotation of the beaters. A supply duct 18 is connected to the delivery blower 16 and is used to transport the opened and mixed raw cotton to the next process such as a mixing and batting machine.

In particular, the present invention makes the heights of the reserve tanks 6a, 6b... different, preferably the reserve tank 6a on the supply side near the suction blower 2.
The height is gradually increased from 6b to 6c at the rear. As a result, the branch transport duct 5a,
5b is inclined upward and has resistance to the transfer of raw cotton;
Effective for distribution to reserve tanks.

In the figure, reference numeral 20 indicates a surplus cotton collection tank that is formed as necessary, for example, connected to each branch transport duct 5a, 5b. You may be asked to return it.

In the above configuration, the opened raw cotton supplied from the bale placka is alternately supplied to the left and right branch transport ducts 5a, 5b by switching the switching damper 7, and as described above, the raw cotton is transferred and transferred to the reserve tank 6a by the pulsation of wind speed. , 6b... is performed.

The raw cotton in the reserve tanks 6 a, 6 b . . . is fed out by feeding rollers 12 a, 12 b . The discharged raw cotton is mixed by airflow in the suction duct 17 and is supplied to the next process from the supply duct 18.

In this case, reserve tanks 6a, 6b, 6c,
6d are different in height, and the raw cotton supplied to each reserve tank is fed out at different times. Therefore, even if the raw cotton supplied is uneven, the suction duct 17 will not contain raw cotton from each period. It is something that can be mixed and eliminate the spots. The reason for this will be explained based on the principle explanatory diagram of FIG. 9.

In the figure, each raw cotton is shown as A1, A2, . . . An, assuming that the raw cotton varies depending on the supply period.
As is clear from the figure, each reserve tank 6a, 6
By making the heights of b, 6c, and 6d different, for example, the stacking position of the raw cotton A1 is different for each reserve tank, and the distance to the lower feeding rollers 12a, 12b, . . . is different. Therefore, each feeding roller 12
When a, 12b... pay out raw cotton at the same speed, the raw cotton fed out in the shortest reserve tank 6a is An, while the reserve tank 6b is
An+1, the reserve tank 6c becomes An+2, and the longest reserve tank 6d becomes An+3. That is, the raw cotton fed out from each of the reserve tanks 6a, 6b, etc. is supplied at different times. Therefore, even if the raw cotton fed out from the bale placka is uneven, the raw cotton fed at different supply times is mixed in the suction duct 17. , spots are removed and raw cotton of uniform quality can be supplied to the next process.

Next, FIGS. 5 to 8 show a second embodiment. The mixing device 30 of this embodiment further stores the raw cotton sent out from the delivery blower 16 in the mixing transfer mechanism 15 of the above embodiment into respective reserve tanks 6a, 6b,
6c and 6d to further enhance the cotton blending effect. The surplus cotton after being distributed to the reserve tank is supplied to the next step, the mixing and batting machine.

That is, a switching damper 31 is also provided on the discharge side of the delivery blower 16, and a branch return duct 3 paired with the switching damper 31 is provided on the discharge side of the delivery blower 16.
2a, 32b are connected, and the respective return ducts are connected to branch pipes 33a, 33b, 33c, 33d and 34.
It is connected to each reserve tank 6a, 6b, 6c via a, 34b, 34c, 34d, and the tips of both branch return ducts 32a, 32b are connected to a supply duct 35 to supply surplus cotton to the next process. It is something. Other parts that are the same as those in the first embodiment are given the same reference numerals and their explanations will be omitted.

According to this embodiment, by making the heights of the respective reserve tanks 6a, 6b, 6c, and 6d different as in the previous example, the raw cotton to be supplied is fed out at different times for each reserve tank, and is different in the suction duct 17. The raw cotton of the supply period is mixed with each other,
The mixed raw cotton is further stored in reserve tanks 6a and 6b.
... to ensure even more homogeneity.

Note that the reserve tanks 6a, 6b,
6c and 6d have shown an example in which the upper end positions are raised sequentially, but conversely, the reserve tank 6a closest to the supply side may be made the highest, and its height may be reduced sequentially. In addition, each reserve tank 6a, 6b...
Of course, it is also possible to arrange the upper ends at the same horizontal position and lower the lower ends sequentially.

〔Effect of the invention〕

As described above, according to the present invention, since a plurality of reserve tanks are provided and the heights of the reserve tanks are different, the supply timing of the raw cotton from the previous process to each reserve tank is different when the raw cotton is fed from the reserve tank. Moreover, since the raw cotton having different feeding times is mixed by air flow in the mixing transfer mechanism, mixing is extremely effective, and homogeneous raw cotton can always be immediately supplied to the next process. Can be done. Moreover, the installation area is smaller than that of the conventional structure, and the structure is simple and maintenance is easy.

[Brief explanation of drawings]

Figures 1 to 4 relate to the first embodiment; Figure 1 is a partially cutaway overall front view, Figure 2 is a left side view,
Figure 3 is a plan view, Figure 4 is X-X in Figure 1.
5 to 8 are cross-sectional views taken along the line, and FIG. 5 is a partially cutaway overall front view, and FIG.
The figure is a left side view, FIG. 7 is a plan view, FIG. 8 is a sectional view taken along the Y-Y line in FIG. 5, FIG. 9 is an illustration of the operating principle of the present invention, and FIGS. FIG. 3 is an explanatory diagram of a conventional example. 1 and 30 are mixing devices, 5 is a transport duct,
6a, 6b, 6c, 6d are transport ducts, 12a,
12b, 12c, 12d are feeding rollers, 13a,
13b, 13c, and 13d are beaters, and 15 is a mixing transfer mechanism.

Claims (1)

[Claims] 1. A transport duct that transports the opened raw cotton by air flow, a plurality of reserve tanks connected to this transport duct, and a process in which the raw cotton drawn out from each reserve tank is mixed by air flow and the next step is carried out. 1. A mixing device for a spinning factory, characterized in that the mixing device comprises a means for transferring to a spinning factory, and the respective reserve tanks have different heights. 2. The mixing device in a spinning factory according to claim 1, wherein the plurality of reserve tanks have their heights increased sequentially from the raw cotton supply side by air flow to the downstream side.