阅读说明：本技术 用于纺前染色的主辅料注入系统 (Main and auxiliary material injection system for dope dyeing ) 是由 钱琦渊 刘熙峰 邵新 于 2019-10-25 设计创作，主要内容包括：本发明涉及有色纤维生产领域,本发明提供一种用于纺前染色的主辅料注入系统,包括主料下料装置、色母粒下料装置,及色母粒注入结构,色母粒注入结构包括主料注入管和色母粒注入管,色母粒注入管上设置有遮挡部。利用遮挡部罩住色母粒注入口的上方区域,可以有效地拦截落入色母粒注入口上方区域的主料,减小色母粒流出的阻力,从而有助于形成可供色母粒流动的空隙,使得色母粒能够及时迅速地由色母粒注入口进入至主料注入管的内部。该主辅料注入系统能够持续顺畅地进行色母粒和主料的下料,避免了色母粒在色母粒注入口处的滞留所引起的色母粒的注入量的忽小忽大,提高了色母粒的注入量的稳定性,有利于提高有色纤维产品的色泽均匀度。(The invention relates to the field of colored fiber production, and provides a master and auxiliary material injection system for spinning dyeing. Utilize the shielding part to cover the top region of masterbatch filling opening, can intercept effectively and fall into the regional main ingredient in masterbatch filling opening top, reduce the resistance that the masterbatch flows out to help forming the space that can supply the color masterbatch to flow, make the masterbatch can in time enter into to the inside of main ingredient filling tube by the masterbatch filling opening rapidly. This major-minor ingredients injection system can continuously carry out the unloading of masterbatch and major ingredient smoothly, has avoided the masterbatch to annotate the stay of entrance at the masterbatch to arouse the masterbatch's the volume of infusing suddenly little suddenly big, has improved the stability of the volume of infusing of masterbatch, is favorable to improving the color and luster degree of consistency of coloured fibre product.)

1. A main and auxiliary material injection system for dope dyeing is characterized by comprising a main material blanking device, a color master batch blanking device and a color master batch injection structure; the color master batch discharging device is communicated with the main material discharging device through the color master batch injection structure; the color master batch injection structure comprises a main material injection pipe and a color master batch injection pipe; the main material injection pipe is arranged along the vertical direction; one pipe orifice of the color master batch injection pipe is a color master batch injection port; the master batch injection pipe is provided with one end containing the master batch injection port and penetrates through the side wall of one side of the main material injection pipe obliquely downwards, the master batch injection port is positioned inside the main material injection pipe, and the master batch injection port is positioned on the axis of the main material injection pipe; the color master batch injection pipe is provided with a shielding part; the shielding part is arranged close to the upper wall of the masterbatch injection port; the horizontal projection of the shielding part on the horizontal plane is the horizontal projection of the shielding part, and the horizontal projection of the masterbatch injection port on the horizontal plane is the projection of the masterbatch injection port; the color master batch injection opening is projected to be positioned at the center of the horizontal projection of the shielding part.

2. The main and auxiliary material injection system for dope dyeing according to claim 1, wherein the color master batch injection tube and the main material injection tube have an included angle of 30 ° to 60 °.

3. The color masterbatch injection structure for dope dyeing as claimed in claim 1, wherein said shielding portion is an arc-shaped sheet-like baffle; the upper surface of the arc-shaped flaky baffle is a convex arc surface.

4. The main and auxiliary material injection system for dope dyeing according to any one of claims 1 to 3, wherein the lower outlet of the main material injection pipe is a mixing injection port; the mixing injection opening is located the masterbatch injection opening under, just the masterbatch injection opening with the difference in height of mixing injection opening in vertical direction is 5 ~ 8 cm.

5. The main and auxiliary material injection system for dope dyeing according to claim 1, wherein the color master batch discharging device comprises a color master batch bin, an intermediate charging bucket and a color master batch discharging pipe which are sequentially communicated from top to bottom; the color master batch discharging pipe is communicated with the color master batch injection pipe; the top of the color master batch bin is provided with a first gas injection pipe; the intermediate charging bucket is filled with color master batches.

6. The main and auxiliary material injection system for dope dyeing as claimed in claim 5, wherein a second gas injection pipe is provided on an upper sidewall of the intermediate tank; the first gas injection pipe is provided with a first branch pipe; the first branch pipe is communicated with the second gas injection pipe.

7. The main and auxiliary material injection system for dope dyeing according to claim 6, wherein the main material discharging device comprises a main material bin; the main material bin is communicated with the main material injection pipe; a third gas injection pipe is arranged at the top of the main material bin; the third gas injection pipe is communicated with the first gas injection pipe or the second gas injection pipe or the first branch pipe.

8. A main and auxiliary material injection system for dope dyeing according to any one of claims 1, 2, 3, 5, 6 and 7, wherein the main and auxiliary material injection system for dope dyeing further comprises a metering control unit capable of automatic frequency conversion according to the number of open spinning sites.

9. The main and auxiliary materials injection system for spinning dyeing according to claim 8, wherein the metering control unit comprises a main material metering device for controlling the flow rate of the main material, a color master batch metering device for controlling the flow rate of the color master batch, a screw rod metering device for controlling the number of revolutions of a screw rod, a control device and a plurality of switches for controlling the on and off of a plurality of spinning positions; each switch corresponds to one spinning part; the main material metering device is arranged on the main material discharging device; the color master batch metering device is arranged on the color master batch metering device; the screw metering device is communicated with the mixing injection port;

the switches are electrically connected with the control device and used for monitoring the on-off states of the switches in real time and counting the number data of the on-off switches of the switches in the on state;

the main material metering device, the color master batch metering device and the screw metering device are respectively electrically connected with the control device and are used for monitoring main material flow rate data, color master batch flow rate data and screw revolution data in real time;

the control device synchronously sends speed regulating signals to the main material metering device, the color master batch metering device and the screw metering device according to logic judgment and calculation;

the main material metering device, the color master batch metering device and the screw metering device synchronously receive speed regulating signals and synchronously execute speed regulation.

10. The main and auxiliary material injection system for dope dyeing according to claim 9, wherein the main material metering device, the color master batch metering device and the screw metering device each comprise a frequency converter, a motor, a speed reducer and a metering pump; the motor, the speed reducer and the metering pump are sequentially and mechanically connected inside the main material metering device, the color master batch metering device and the screw rod metering device, the motor and the speed reducer are coaxially connected and drive the metering pump to operate, and the frequency converter is electrically connected with the motor and used for adjusting the rotating speed of the motor; all the frequency converters are electrically connected with the control device and used for receiving and executing the speed regulating signals sent by the control device.

Technical Field

The invention relates to the field of colored fiber production, in particular to a main and auxiliary material injection system for dope dyeing.

Background

The dope dyeing is a production process for preparing colored fibers by adding color master batches in the spinning process. The color masterbatch (auxiliary material) and the polyester fiber (main material) are uniformly mixed and then are formed by melt spinning, so that the color fastness of the prepared colored fiber finished product is relatively high. Compared with the traditional process of dyeing after spinning, the process of dyeing after spinning has the obvious advantages of short process flow, low energy consumption, economy and environmental protection; the colored fiber product prepared by the dope dyeing has high color fastness and small batch difference.

In the dope dyeing process, the main material and the color master batch need to be uniformly mixed. In the prior art, spinning of colored fibers is generally carried out by adopting a color master batch injection mode, but in the injection process of the color master batch, as the flow of the main material is large and the flow rate is fast, and the flow of the color master batch is small, when the main material flows through the area nearby the lower part of the color master batch injection pipe, the main material occupies the flowing space of the color master batch, the flowing resistance of the color master batch is increased, the injection amount of the color master batch is smaller than a set value, and even the color master batch cannot be injected smoothly; along with the accumulation of the masterbatch of detaining in the masterbatch filling tube, the whole gravity of masterbatch increases gradually, and when whole gravity increased enough to overcome the flow resistance that the masterbatch received, the color masterbatch just can enter into in the major ingredient in the twinkling of an eye for the injection volume of masterbatch increases sharply. By adopting the main and auxiliary material injection system in the prior art, the injection quantity of the color master batch is poor in stability, and the produced colored fiber product is easy to have uneven color and seriously affects the quality of the product.

Disclosure of Invention

By adopting the main and auxiliary material injection system in the prior art, the injection quantity of the color master batch is poor in stability, the color of the produced colored fiber product is easy to be uneven, the quality of the product is seriously influenced, and great economic loss is caused for enterprises. In view of the above problems, an object of the present invention is to provide a main and auxiliary material injection system for dope dyeing having a simple structure and high reliability.

The technical scheme provided by the invention is as follows:

the invention provides a main and auxiliary material injection system for spinning dyeing, which comprises a main material blanking device, a color master batch blanking device and a color master batch injection structure, wherein the main material blanking device is connected with the color master batch injection structure; the color master batch discharging device is communicated with the main material discharging device through the color master batch injection structure; the color master batch injection structure comprises a main material injection pipe and a color master batch injection pipe; the main material injection pipe is arranged along the vertical direction; one pipe orifice of the color master batch injection pipe is a color master batch injection port; the master batch injection pipe is provided with one end containing the master batch injection port and penetrates through the side wall of one side of the main material injection pipe obliquely downwards, the master batch injection port is positioned inside the main material injection pipe, and the master batch injection port is positioned on the axis of the main material injection pipe; the color master batch injection pipe is provided with a shielding part; the shielding part is arranged close to the upper wall of the masterbatch injection port; the horizontal projection of the shielding part on the horizontal plane is the horizontal projection of the shielding part, and the horizontal projection of the masterbatch injection port on the horizontal plane is the projection of the masterbatch injection port; the color master batch injection opening is projected to be positioned at the center of the horizontal projection of the shielding part.

According to the main and auxiliary material injection system for dope dyeing provided by the invention, preferably, the included angle between the color master batch injection pipe and the main material injection pipe is 30-60 degrees.

According to the main and auxiliary material injection system for dope dyeing provided by the invention, preferably, the shielding part is an arc-shaped sheet-shaped baffle; the upper surface of the arc-shaped flaky baffle is a convex arc surface.

The main material injection pipe and the auxiliary material injection pipe are connected in series, and the main material injection pipe and the auxiliary material injection pipe are connected in series; the mixing injection opening is located the masterbatch injection opening under, just the masterbatch injection opening with the difference in height of mixing injection opening in vertical direction is 5 ~ 8 cm.

The master and auxiliary material injection system for the spinning dyeing provided by the invention has the advantages that preferably, the master batch blanking device comprises a master batch bin, an intermediate charging bucket and a master batch discharging pipe which are sequentially communicated from top to bottom; the color master batch discharging pipe is communicated with the color master batch injection pipe; the top of the color master batch bin is provided with a first gas injection pipe; the intermediate charging bucket is filled with color master batches.

The main and auxiliary material injection system for dope dyeing provided by the invention is characterized in that preferably, a second gas injection pipe is arranged on the upper side wall of the intermediate charging bucket; the first gas injection pipe is provided with a first branch pipe; the first branch pipe is communicated with the second gas injection pipe.

The main material and auxiliary material injection system for the dope dyeing provided by the invention has the advantages that preferably, the main material blanking device comprises a main material bin; the main material bin is communicated with the main material injection pipe; a third gas injection pipe is arranged at the top of the main material bin; the third gas injection pipe is communicated with the first gas injection pipe or the second gas injection pipe or the first branch pipe.

The main and auxiliary material injection system for dope dyeing provided by the invention preferably further comprises a metering control unit capable of automatically performing frequency conversion according to the opening number of spinning positions.

The invention provides a main and auxiliary material injection system for spinning dyeing, preferably, the metering control unit comprises a main material metering device for controlling the flow rate of a main material, a color master batch metering device for controlling the flow rate of the color master batch, a screw metering device for controlling the rotation number of a screw, a control device and a plurality of switches for controlling the opening and closing of a plurality of spinning positions; each switch corresponds to one spinning part; the main material metering device is arranged on the main material discharging device; the color master batch metering device is arranged on the color master batch metering device; the screw metering device is communicated with the mixing injection port;

the switches are electrically connected with the control device and used for monitoring the on-off states of the switches in real time and counting the number data of the on-off switches of the switches in the on state;

the main material metering device, the color master batch metering device and the screw metering device are respectively electrically connected with the control device and are used for monitoring main material flow rate data, color master batch flow rate data and screw revolution data in real time;

the control device synchronously sends speed regulating signals to the main material metering device, the color master batch metering device and the screw metering device according to logic judgment and calculation;

the main material metering device, the color master batch metering device and the screw metering device synchronously receive speed regulating signals and synchronously execute speed regulation.

The main material metering device, the color master batch metering device and the screw metering device all comprise a frequency converter, a motor, a speed reducer and a metering pump; the motor, the speed reducer and the metering pump are sequentially and mechanically connected inside the main material metering device, the color master batch metering device and the screw rod metering device, the motor and the speed reducer are coaxially connected and drive the metering pump to operate, and the frequency converter is electrically connected with the motor and used for adjusting the rotating speed of the motor; all the frequency converters are electrically connected with the control device and used for receiving and executing the speed regulating signals sent by the control device.

The invention has the advantages or beneficial effects that:

the master batch injection structure comprises the main material injection pipe and the master batch injection pipe, the shielding part is arranged on the master batch injection pipe, and the structure is simple and the reliability is high by the shielding part. Utilize the shielding part to cover the top region of masterbatch filling opening, can intercept effectively and fall into the regional main ingredient in masterbatch filling opening top, reduce the resistance that the masterbatch flows out to help forming the space that can supply the color masterbatch to flow, make the masterbatch can in time enter into to the inside of main ingredient filling tube by the masterbatch filling opening rapidly. The main and auxiliary material injection system for the dope dyeing provided by the invention can continuously and smoothly carry out the blanking of the color master batch and the main material, avoids the phenomenon that the injection amount of the color master batch is suddenly small and suddenly large due to the detention of the color master batch at the injection inlet of the color master batch, and can improve the stability of the injection amount of the color master batch, thereby being beneficial to improving the color uniformity of the produced colored fiber product and further improving the quality of the colored fiber product.

On the other hand, in the process of blanking the main material and the master batch, the main material and the master batch enter a master batch injection structure and are conveyed downwards along the pipe wall, wherein the main material is blocked by the blocking part and is continuously blanked around the master batch injection hole; under the color master batch injection opening, a part of the main material is dispersed to the center of the main material injection pipe due to the collision with the main material injection pipe or the surrounding main material or the color master batch; the masterbatch follows oblique below motion, receives the restriction of stop part and the effect of stopping of top major ingredient blanking mainly downstream, and partly masterbatch is dispersed to the pipe wall direction of major ingredient filling tube owing to receive the collision of major ingredient or masterbatch around to play the effect of premixing major ingredient and masterbatch, be favorable to improving the masterbatch concentration of the mixed ejection of compact, thereby be favorable to improving the color and luster degree of consistency of the colored fiber product of production, and then promote the quality of colored fiber product.

Drawings

The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. Like reference symbols in the various drawings indicate like elements. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.

FIG. 1 is a schematic view showing the construction of a main and auxiliary materials injection system for dope dyeing of example 1 of the present invention;

FIG. 2 is a schematic cross-sectional view of the structure of FIG. 1 at area A;

fig. 3 is a schematic view of the horizontal projection position relationship of the color master batch injection tube, the shielding part and the color master batch injection port on the same horizontal plane in example 1 of the present invention;

fig. 4 is a schematic perspective view of a color masterbatch injection tube provided with a shielding portion according to example 1 of the present invention;

FIG. 5 is a schematic configuration diagram of a main and auxiliary materials injection system for dope dyeing according to example 2 of the present invention;

FIG. 6 is a schematic configuration view of a main and auxiliary materials injection system for dope dyeing according to example 3 of the present invention,

wherein the dashed lines in fig. 6 represent electrical connection lines.

Detailed Description

In the following, the technical solutions in the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention without making creative efforts, belong to the protection scope of the invention.