Cellulose ether feeding device

Abstract

The utility model relates to a cellulose ether feeding device, and belongs to the technical field of cellulose ether production. Comprising a stock bin, the bottom of the stock bin is connected with an inclined discharging pipe in a penetrating mode, the inclined discharging pipe is connected with a mixing pipe in a penetrating mode, and the included angle between the axis of the inclined discharging pipe and the axis of the mixing pipe is smaller than 70 degrees. The mixing pipe is communicated with a fan at the inlet end of the inclined discharge pipe, and the other end of the mixing pipe is communicated with a conveying pipe. The material conveying quantity can be adjusted, cellulose ether does not make contact with the fan, and the service life of the fan is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of cellulose ether production, and specifically relates to a cellulose ether feeding device. Background Art

[0002] In the process of cellulose ether production, materials need to be fed to each production line through the silo. There are two ways of feeding, screw feeding or airflow feeding. The advantage of screw feeding is that the weight of the feeding is controllable, but its feeding path and length are limited; the advantage of airflow feeding is that the feeding path is long and can be arranged arbitrarily.

[0003] On August 19, 2022, the Chinese patent authorized and announced a cellulose ether dust-free feeding station feeding device with announcement number CN217229547U, including a dust-free feeding station, a fan and a feeding pipe. The dust-free feeding station is provided with a feeding port, a feeding port and a dust suction port. The feeding port is connected to the feeding pipe, one end of the feeding pipe is connected to the air outlet of the fan, and a venturi tube is fixed on the inner side of the feeding pipe. The negative pressure port of the venturi tube is connected to the dust suction port through the dust suction pipe. This patent uses airflow to feed materials, and the feeding path is flexible, but the feeding quantity cannot be accurately controlled. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a cellulose ether feeding device. The utility model has an adjustable feeding quantity, the cellulose ether does not contact the fan, and the service life of the fan is extended.

[0005] The technical solution adopted by the utility model to solve the problems existing in the prior art is:

[0006] A cellulose ether feeding device comprises a silo, wherein the bottom of the silo is connected with an inclined discharge pipe, the inclined discharge pipe is connected with a mixing pipe, and the angle between the axis of the inclined discharge pipe and the axis of the mixing pipe is less than 70 degrees.

[0007] The mixing pipe is located at the inlet end of the inclined discharge pipe and is connected with a fan, and the other end is connected with a conveying pipe.

[0008] Preferably, the angle between the axis of the inclined discharge pipe and the axis of the mixing pipe is 30-70°.

[0009] Preferably, a stop valve is provided on the inclined discharge pipe.

[0010] Preferably, a vertical discharge pipe is connected vertically downward through the center of the bottom of the silo, and the bottom of the vertical discharge pipe is connected through the inlet of the inclined discharge pipe.

[0011] Preferably, a screw feeder is vertically arranged inside the silo, and the feeding screw of the screw feeder is inserted inside the vertical feeding pipe.

[0012] Preferably, a bypass pipe is connected through the air outlet of the fan, the bypass pipe is located at the front end of the mixing pipe, and the air outlet end of the bypass pipe is located above the inside of the silo.

[0013] Preferably, the end of the bypass pipe is connected through an annular pipe, the annular pipe is provided with a plurality of exhaust holes arranged downwards, and the annular pipe is arranged inside the silo.

[0014] Preferably, the annular tube is coaxially arranged with the silo.

[0015] Preferably, a cover is provided at the upper end of the silo.

[0016] Preferably, the inner diameter of the mixing pipe is larger than the inner diameters of the inclined discharge pipe and the conveying pipe.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] (1) Precise material discharge through the screw feeder makes the weight of material transmission precisely adjustable, which is convenient for optimizing the production process.

[0019] (2) During the feeding process, the new pipe is used to inject gas into the silo, so that the material inside has downward pressure to prevent it from splashing, thus achieving dust control. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 This is a structural diagram of a cellulose ether feeding device of the utility model.

[0022] Figure 2 This is a side view of a cellulose ether feeding device of the utility model.

[0023] Figure 3 This is a partial cross-sectional view of the bottom of a cellulose ether feeding device of the utility model.

[0024] Figure 4 The utility model is a structural diagram of a dust prevention device in a cellulose ether feeding device.

[0025] In the figure: 1- silo, 2- screw feeder, 3- vertical feed pipe, 4- inclined discharge pipe, 5- mixing pipe, 6- feed pipe, 7- fan, 8- bypass pipe, 9- annular pipe. DETAILED DESCRIPTION

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the technical field of the present application. The terms used herein are only for the purpose of describing specific implementation methods and are not intended to limit the present application embodiments.

[0027] In addition, in the specification and claims of the present invention, terms indicating directions, such as "front", "rear", "up", "down", "left", "right", "side", "top", "bottom", etc., are used to describe various exemplary structural parts and elements of the present invention, but these terms are used here only for the purpose of convenience of description and are determined based on the exemplary orientations shown in the drawings. Therefore, these terms indicating directions are only used as explanations and should not be regarded as limitations. For example, "up" and "down" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0028] The cellulose ether feeding device of the utility model is further described in detail below in conjunction with the accompanying drawings.

[0029] A cellulose ether feeding device comprises a silo 1, wherein the bottom of the silo 1 is connected with an inclined discharge pipe 4, the inclined discharge pipe 4 is connected with a mixing pipe 5, and the angle between the axis of the inclined discharge pipe 4 and the axis of the mixing pipe 5 is less than 70°.

[0030] The mixing tube 5 is located at the inlet end of the inclined discharge tube 4 and is connected to a fan 7, and the other end is connected to a conveying pipe 6, so the direction of the airflow is opposite to the inclined discharge tube 4, so that the airflow will not flow into the inclined discharge tube 4, and can better carry away the material discharged from the inclined discharge tube 4 and input it into the conveying pipe 6 by airflow conveying.

[0031] Since the material is conveyed by air flow, the direction and length of the conveying pipe 6 can be better arranged. In order to further optimize the conveying effect, the angle between the axis of the inclined discharge pipe 4 and the axis of the mixing pipe 5 is 30-70°, and the inner diameter of the mixing pipe 5 is larger than the inner diameters of the inclined discharge pipe 4 and the conveying pipe 6.

[0032] The inclined discharge pipe 4 is provided with a stop valve, and the discharge is controlled by opening the stop valve.

[0033] In order to discharge materials more accurately, a vertical discharge pipe 3 is connected vertically downward from the center of the bottom of the silo 1, and the bottom of the vertical discharge pipe 3 is connected to the entrance of the inclined discharge pipe 4. A screw feeder 2 is vertically arranged inside the silo 1, and the feeding screw of the screw feeder 2 is inserted inside the vertical discharge pipe 3.

[0034] In this way, by controlling the rotation speed of the screw feeder 2, the discharge amount can be controlled, and the discharge amount can also be accurately counted.

[0035] The air outlet of the fan 7 is connected with a bypass pipe 8 , which is located at the front end of the mixing pipe 5 , and the air outlet end of the bypass pipe 8 is located above the inside of the silo 1 .

[0036] The end of the bypass pipe 8 is connected to an annular pipe 9, on which a plurality of exhaust holes arranged downward are provided, and the annular pipe 9 is arranged inside the silo 1. The annular pipe 9 is arranged coaxially with the silo 1. A cover is provided at the upper end of the silo 1.

[0037] During feeding, the annular pipe 9 injects gas into the silo 1 to increase the internal air pressure, further preventing the airflow from moving upward from the inclined discharge pipe 4 to form a backflow, thereby optimizing the feeding effect and preventing dust from being discharged from the silo 1. A flow regulating valve is provided on the bypass pipe 8 to facilitate adjusting the air pressure inside the silo 1.

[0038] The implementation modes of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A cellulose ether feeding device, comprising a silo (1), characterized in that: The bottom of the silo (1) is connected to an inclined discharge pipe (4), the inclined discharge pipe (4) is connected to a mixing pipe (5), and the angle between the axis of the inclined discharge pipe (4) and the axis of the mixing pipe (5) is less than 70°. The mixing pipe (5) is located at the inlet end of the inclined discharge pipe (4) and is connected to a fan (7), and the other end is connected to a conveying pipe (6).

2. A cellulose ether feeding device according to claim 1, characterized in that: The included angle between the axis of the inclined discharge pipe (4) and the axis of the mixing pipe (5) is 30-70°.

3. A cellulose ether feeding device according to claim 1, characterized in that: The inclined discharge pipe (4) is provided with a stop valve.

4. A cellulose ether feeding device according to claim 1, characterized in that: A vertical discharge pipe (3) is connected vertically downward through the center of the bottom of the silo (1), and the bottom of the vertical discharge pipe (3) is connected through the inlet of the inclined discharge pipe (4).

5. A cellulose ether feeding device according to claim 4, characterized in that: A screw feeder (2) is vertically arranged inside the silo (1), and the feed screw of the screw feeder (2) is inserted inside the vertical feed pipe (3).

6. A cellulose ether feeding device according to any one of claims 1 to 5, characterized in that: The air outlet of the fan (7) is connected to a bypass pipe (8), which is located at the front end of the mixing pipe (5), and the air outlet end of the bypass pipe (8) is located above the inside of the silo (1).

7. A cellulose ether feeding device according to claim 6, characterized in that: The end of the bypass pipe (8) is connected to an annular pipe (9), and the annular pipe (9) is provided with a plurality of exhaust holes arranged downwards. The annular pipe (9) is arranged inside the silo (1).

8. A cellulose ether feeding device according to claim 7, characterized in that: The annular tube (9) is coaxially arranged with the silo (1).

9. A cellulose ether feeding device according to claim 7 or 8, characterized in that: The upper end of the silo (1) is provided with a cover.

10. A cellulose ether feeding device according to any one of claims 1 to 5, characterized in that: The inner diameter of the mixing pipe (5) is larger than the inner diameters of the inclined discharge pipe (4) and the conveying pipe (6).

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