Alkali cellulose recovery device
By designing an alkali cellulose recovery device, using compressed air to form local negative pressure, the excess alkali cellulose in the yellowing machine is directly extracted, which solves the problems of time-consuming, labor-intensive and cumbersome manual operation in the prior art, and achieves efficient and safe alkali cellulose recycling.
Patent Information
- Application Number
- CN202421846447.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-31
AI Technical Summary
In the viscose fiber production process, when the alkali cellulose in the yellowing machine exceeds the rated quantity, manual excavation or negative pressure equipment is used in the prior art, such as time-consuming and laborious and complicated steps.
An alkali cellulose recovery device is designed, using the compressed air intake assembly and the negative pressure chamber and discharge chamber structure of the outer cylinder to form a local negative pressure through the high-speed flowing compressed air, and directly extract the excess alkali cellulose in the yellowing machine, and output it to a special container through the output pipeline.
The device can efficiently extract excess alkali cellulose from the yellowing machine, reducing the time and labor of manual operation, reducing safety risks, simplifying processes and improving work efficiency.
Smart Images
Figure CN222943451U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical fiber equipment, in particular to an alkali cellulose recovery device. Background Art
[0002] In the process of viscose fiber production, the xantholysis machine is the most important unit in the preparation of stock solution. The pulp raw material is transformed into alkali cellulose after a series of processes such as impregnation, pressing, crushing, and aging. The alkali cellulose reacts chemically with CS2 gas in the xantholysis machine to generate cellulose xanthate, which is then dissolved in alkali solution to obtain the viscose stock solution for spinning.
[0003] In the technological process, the weight of alkali cellulose entering the xantholytic machine is controlled by a weighing system. However, occasionally errors in the control system or misoperation by personnel may cause the alkali cellulose entering the xantholytic machine to exceed the rated amount. In this case, the excess alkali cellulose in the xantholytic machine needs to be separated.
[0004] At present, the method of separating alkali cellulose is to manually dig out the excess alkali cellulose at the manhole on the top of the yellowing machine with a container, which is time-consuming and labor-intensive, and also has certain safety risks; or to use the pipeline of the negative pressure equipment to directly extract the alkali cellulose into the yellowing machine, but the alkali cellulose extracted in this way is all transported to the internal containing cavity of the negative pressure equipment, and the alkali cellulose of the negative pressure equipment needs to be extracted again in the subsequent process, which increases the process and is too cumbersome. Utility Model Content
[0005] The utility model aims to solve the technical problem that when the alkali cellulose in the xantholytic machine exceeds the rated amount, the method of manually digging out or extracting it into a negative pressure container using a container on the top of the xantholytic machine is time-consuming, labor-intensive and complicated. An alkali cellulose recovery device is provided, which can recover the excess alkali cellulose in the xantholytic machine by direct extraction. The main concept is:
[0006] An alkali cellulose recovery device includes an outer cylinder and a compressed air intake assembly, wherein the outer cylinder includes a negative pressure chamber and a discharge chamber, the inner diameter of the negative pressure chamber is larger than the inner diameter of the discharge chamber, the negative pressure chamber is provided with a feed port, the compressed air intake assembly includes a central tube, the central tube is installed in the negative pressure chamber of the outer cylinder, the output end of the central tube points to the discharge chamber, and the compressed air intake assembly is used to provide a power source for the alkali cellulose to enter the negative pressure chamber. The outer cylinder of this scheme is provided with a compressed air intake assembly, which divides the outer cylinder into a negative pressure chamber and a discharge chamber, and a feed port is provided on the side wall of the negative pressure chamber, the feed port provides a channel for the alkali cellulose to enter the interior of the outer cylinder, and the discharge chamber is used to output the alkali cellulose entering the outer cylinder to the outside, and the compressed air intake assembly is installed in the negative pressure chamber. Since the inner diameter of the negative pressure chamber is larger than the inner diameter of the discharge chamber, the gas flow between the negative pressure chamber and the discharge chamber is hindered, thereby forming a local negative pressure area, and a local negative pressure is generated in the negative pressure chamber; therefore, in actual use, when the compressed air intake assembly passes through When high-speed compressed air is passed into the outer cylinder by the central tube, the negative pressure formed by the high-speed compressed air in the negative pressure chamber can suck the alkali cellulose into the outer cylinder. Since the central tube points to the discharge chamber, the alkali cellulose flows toward the discharge chamber along the output direction of the compressed air. The discharge chamber is connected to the output pipe, and the alkali cellulose blown into the output pipe is output to a special container or the next xantholytic machine to be charged, so as to achieve the purpose of extracting the alkali cellulose in the xantholytic machine. The recovery device of this scheme replaces manual labor, reduces working procedures, improves work efficiency and reduces safety risks.
[0007] Preferably, the negative pressure chamber includes a first pipe, a choke and a baffle, one side of the first pipe is connected to the baffle, the baffle is provided with a through hole, the other side of the first pipe is connected to the choke, the first pipe is connected to the discharge chamber through the choke, and the choke is a conical ring structure. The choke is set as a conical ring structure, and when the alkali cellulose is transported from the negative pressure chamber to the discharge chamber, the side wall of the conical ring structure is inclined to facilitate the diversion of the alkali cellulose and prevent the alkali cellulose from accumulating in the choke.
[0008] Preferably, the discharge chamber comprises a second pipe, the inner diameter of the second pipe is smaller than the inner diameter of the first pipe, the second pipe is connected to the first pipe via a wind blocking portion, and the second pipe is provided with a discharge port.
[0009] Preferably, the outer cylinder is a plastic cylinder, which is made of plastic material, light and convenient, simple in structure, and easy to manufacture.
[0010] Preferably, the compressed air intake assembly includes a central tube and a quick connector, wherein the quick connector is arranged outside the through hole of the baffle, the central tube is arranged and fixed inside the outer tube, and the quick connector is connected to the central tube.
[0011] The second aspect of the utility model aims to solve the technical problem of compressed air leakage when inputting into the outer tube. Furthermore, the central tube is a plastic tube, the central tube is connected to the through hole of the baffle, and the central tube and the baffle are fixedly connected by plastic welding. In this scheme, the central tube and the outer cylinder are both made of plastic material, so that the central tube and the baffle of the outer cylinder are connected to each other by plastic welding to combine the two plastic parts into a whole. The central tube is made of plastic material, and the ends of the baffle and the outer cylinder are fixedly connected to the central tube and the baffle by plastic welding. The sealed air will not leak at the position of the baffle in the outer cylinder, so that negative pressure cannot be generated in the outer cylinder, resulting in the inability to suck the alkali cellulose in the yellowing machine.
[0012] Preferably, the quick connector is connected to a compressed air pipe, and a compressed air solenoid valve is provided on the compressed air pipe. The compressed air pipe is used to transport compressed air to the inside of the outer cylinder. The quick connector can realize the rapid installation of the compressed air pipe, and the compressed air solenoid valve installed on the compressed air pipe can adjust the density and flow rate of the compressed air filled into the outer cylinder according to the different depths of alkali cellulose in the yellowing machine, thereby improving the applicability of the recovery device of this scheme.
[0013] Preferably, the length difference between the central tube and the first pipe is 0-2 mm. When the length of the central tube is similar to that of the first pipe, the contact gap between the fast-flowing compressed air introduced into the central tube and the air blocking portion is small, so that the resistance between the central tube and the air blocking portion is maximized, and the negative pressure formed when the central tube outlet is located at the end of the first pipe is maximized.
[0014] The purpose of the utility model is to solve the problem that the upward opening of the recovery device in the yellowing machine causes the suction failure of the alkali cellulose and affects the suction effect. Furthermore, the feed port is equipped with a horn interface, and the horn interface is provided with a counterweight assembly. The installation of the counterweight assembly on the horn interface can make the weight of the horn interface greater than the outer cylinder as a whole, so that when the recovery device is placed in the yellowing machine to suck the alkali cellulose, the metal counterweight assembly is always downward under the action of gravity, avoiding the upward opening of the feed port affecting the suction effect and efficiency of the alkali cellulose in the yellowing machine.
[0015] The beneficial effects of the utility model are:
[0016] Utilizing the air jet principle, compressed air is passed through the central tube arranged inside. The compressed air generates a high-speed airflow to form a negative pressure in the outer cylinder, and the alkali cellulose in the yellowing machine is sucked into the recovery device from the lower horn interface. The alkali cellulose enters the outer cylinder and is blown into the discharge cavity at the thin end of the outer cylinder by the compressed air coming out of the central tube and then enters the container. The recovery device improves the efficiency of extracting excess alkali cellulose and is safer than manual digging. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the structure of the utility model.
[0018] The reference numerals include: 1. outer cylinder; 11. first pipe; 12. second pipe; 13. wind blocking part; 2. compressed air intake assembly; 21. center pipe; 22. quick connector; 3. feed port; 4. discharge port; 5. baffle; 6. speaker interface. DETAILED DESCRIPTION
[0019] In order to make the purpose, technical solutions and advantages of the embodiments more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are only examples of devices and methods consistent with some aspects of the present disclosure as detailed in the attached claims.
[0020] In the present disclosure, unless otherwise stated, the directional words used, such as "inside" and "outside", are defined according to the corresponding parts' own contours. The terms used in the present disclosure, such as "first" and "second", etc., are used to distinguish one element from another element and do not have order and importance. Example 1
[0021] like Figure 1 As shown, an alkali cellulose recovery device includes an outer cylinder 1 and a compressed air intake assembly 2, wherein the outer cylinder 1 includes a negative pressure chamber and a discharge chamber, wherein the inner diameter of the negative pressure chamber is larger than the inner diameter of the discharge chamber, and the negative pressure chamber is provided with a feed port 3, and the compressed air intake assembly 2 includes a central tube 21, which is installed in the negative pressure chamber of the outer cylinder 1, and the output end of the central tube 21 points to the discharge chamber, and the compressed air intake assembly 2 is used to provide a power source for the alkali cellulose to enter the negative pressure chamber.
[0022] The outer cylinder 1 of the present scheme is provided with a compressed air intake assembly 2, which divides the outer cylinder 1 into a negative pressure chamber and a discharge chamber. A feed port 3 is provided on the side wall of the negative pressure chamber, and the feed port 3 provides a passage for the alkali cellulose to enter the inner part of the outer cylinder 1. The discharge chamber is used to output the alkali cellulose entering the outer cylinder 1 to the outside. The compressed air intake assembly 2 is installed in the negative pressure chamber. Since the inner diameter of the negative pressure chamber is larger than the inner diameter of the discharge chamber, the gas flow between the negative pressure chamber and the discharge chamber is hindered, thereby forming a local negative pressure area, and a local negative pressure is generated in the negative pressure chamber.
[0023] During actual use, when the compressed air intake component 2 passes high-speed compressed air into the outer cylinder 1 through the central tube 21, the negative pressure formed by the high-speed compressed air in the negative pressure chamber can suck the alkali cellulose into the outer cylinder 1. Since the central tube 21 points to the discharge chamber, the alkali cellulose flows toward the discharge chamber along the output direction of the compressed air. The discharge chamber is connected to the output pipe, and the alkali cellulose blown into the output pipe is output to a special container or the next xantholytic machine to be loaded, so as to achieve the purpose of extracting the alkali cellulose in the xantholytic machine. The recovery device of this scheme replaces manual labor, reduces the process, improves work efficiency and reduces safety risks.
[0024] Alkali cellulose is a product obtained by treating cellulose with alkali. Alkali cellulose is an important raw material for viscose fiber. It is similar in appearance to cellulose, but its chemical reaction performance is much greater than that of cellulose. In actual production life, the alkali cellulose loaded into the yellowing machine is fluffy, and the alkali cellulose on the surface of the yellowing machine is loose. The recovery device uses the air injection principle to form negative pressure to absorb the alkali cellulose from the yellowing machine.
[0025] The negative pressure chamber includes a first pipe 11, an air blocking portion 13 and a baffle 5. One side of the first pipe 11 is connected to the baffle 5, and the baffle 5 is provided with a through hole. The other side of the first pipe 11 is connected to the air blocking portion 13. The first pipe 11 is connected to the discharge chamber through the air blocking portion 13, and the air blocking portion 13 is a conical ring structure. The air blocking portion 13 is set as a conical ring structure. When the alkali cellulose is transported from the negative pressure chamber to the discharge chamber, the side wall of the conical ring structure is inclined to facilitate the diversion of the alkali cellulose and prevent the alkali cellulose from accumulating in the air blocking portion 13.
[0026] The discharge chamber includes a second pipe 12 , the inner diameter of the second pipe 12 is smaller than the inner diameter of the first pipe 11 , the second pipe 12 is connected to the first pipe 11 via an air blocking portion 13 , and the second pipe 12 is provided with a discharge port 4 .
[0027] Preferably, the axial length of the outer cylinder 1 is 250-400 mm, wherein the outer diameter of the first pipe 11 is 100-150 mm, and the outer diameter of the second pipe 12 is 20-50 mm.
[0028] The outer cylinder 1 is made of PVC material, so that the recovery device is light and convenient, with a simple structure and easy to manufacture. In this embodiment, the outer cylinder 1 is formed into a non-detachable funnel-shaped structure by plastic welding the baffle 5, the first pipe 11, the air blocking part 13 and the second pipe 12 in sequence. The cylinder body of the outer cylinder 1 can also be manufactured by injection molding. Example 2
[0029] like Figure 1As shown, the compressed air intake assembly 2 of this embodiment includes a central tube 21 and a quick connector 22 , wherein the quick connector 22 is arranged outside the through hole of the baffle 5 , the central tube 21 is arranged and fixed inside the outer tube 1 , and the quick connector 22 is connected to the central tube 21 .
[0030] In this embodiment, drilling and tapping are performed on the baffle 5 to form a mounting through hole with an internal thread, and the quick connector 22 is connected to the baffle 5 of the outer tube 1 through threaded cooperation. In order to ensure the sealing between the quick connector 22 and the baffle 5, raw tape is used to wrap the threaded section where the quick connector 22 cooperates with the through hole, so that the raw tape fills the gap at the connection, thereby enhancing the airtightness of the connection position and preventing gas leakage at the installation position of the quick connector 22 when the compressed air pipe connected to the quick connector 22 delivers compressed air to the outer tube 1.
[0031] In addition, an internal thread can be provided on the inner wall of one end of the connection position between the central tube 21 and the baffle 5, so that the quick connector 22 is threadedly connected to the central tube 21, and a raw tape is also provided at the connection position between the quick connector 22 and the central tube 21 to prevent compressed air leakage. The central tube 21 of this embodiment is made of PVC, the central tube 21 is connected to the through hole of the baffle 5, and the central tube 21 and the baffle 5 are fixedly connected by plastic welding.
[0032] Preferably, the central tube 21 and the outer cylinder 1 are both made of PVC plastic material, so that the central tube 21 and the baffle 5 of the outer cylinder 1 are combined into a whole by plastic welding. The baffle 5 and the end of the outer cylinder 1 are fixedly connected to the central tube 21 and the baffle 5 by plastic welding, and the sealed air in the outer cylinder 1 will not leak at the position of the baffle 5, so that the negative pressure in the outer cylinder 1 cannot be generated, and the alkali cellulose in the yellowing machine cannot be sucked.
[0033] The quick connector 22 is installed with a compressed air pipe, and a compressed air solenoid valve is arranged on the compressed air pipe. The compressed air pipe is used to transport compressed air to the inside of the outer cylinder 1. The quick connector 22 can realize the quick installation of the compressed air pipe, and the compressed air solenoid valve is installed on the compressed air pipe. The density and flow rate of the compressed air filled into the outer cylinder 1 can be adjusted according to the different depths of alkali cellulose in the yellowing machine, thereby improving the applicability of the recovery device of this scheme.
[0034] The flow rate of the compressed air passing through the compressed air pipe into the outer cylinder 1 is 20-30 m / s, and the efficiency of extracting the alkali cellulose from the yellowing machine through the recovery device is about 8-15 kg / min.
[0035] Preferably, the length difference between the central tube 21 and the first pipe 11 is 0-2 mm. When the length of the central tube 21 is similar to that of the first pipe 11, the contact gap between the fast-flowing compressed air introduced into the central tube 21 and the air blocking portion is small, so that the resistance between the central tube 21 and the air blocking portion 13 is maximized, and the negative pressure formed when the outlet of the central tube 21 is located at the end of the first pipe 11 is maximized.
[0036] The outer diameter of the central tube 21 is 20-30 mm, so that the central tube 21 is arranged inside the outer tube 1 . Example 3
[0037] like Figure 1 As shown, the feed port 3 of this embodiment is equipped with a horn interface 6, and the horn interface 6 is provided with a counterweight assembly. Among them, the horn interface 6 is a cone-shaped interface formed by two openings with different inner diameters, and the height of the horn interface 6 is 15-25mm. Installing the counterweight assembly on the horn interface 6 can make the weight of the horn interface greater than the outer cylinder 1 as a whole, so that when the recovery device is placed in the yellowing machine to suck alkali cellulose, the metal counterweight assembly is always facing downward under the action of gravity, avoiding the upward opening of the feed port 3 affecting the suction effect and efficiency of the alkali cellulose in the yellowing machine.
[0038] The counterweight assembly can be set as a metal assembly and arranged at the entrance of the speaker interface by bonding or bolting. The counterweight assembly can be set on the outer wall of the speaker interface 6. The metal assembly arranged in this way will not affect the feeding height and feeding width of the speaker interface 6 while increasing the weight of the speaker interface 6.
[0039] In addition, the counterweight component arranged on the outer wall of the horn interface 6 may be in the shape of a ring, and the wall thickness of the ring-shaped counterweight component on both sides perpendicular to the axis of the horn interface 6 and the outer cylinder 1 is inconsistent; the counterweight component arranged on the outer wall of the horn interface 6 may use two counterweight blocks of different weights, and the two counterweight blocks are respectively arranged on both sides of the vertical position of the axis of the horn interface 6 and the outer cylinder 1. Under the effect of the weight difference of the counterweight component, the recovery device cannot maintain balance when the opening is located at the top, so that the opening of the horn interface 6 of the recovery device is always located at the bottom to contact the alkali cellulose.
[0040] The above is only an embodiment of the utility model, and the common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the structure of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.
Claims
1. An alkali cellulose recovery device, characterized in that: The invention comprises an outer cylinder (1) and a compressed air intake assembly (2), wherein the outer cylinder (1) comprises a negative pressure chamber and a discharge chamber, wherein the inner diameter of the negative pressure chamber is larger than the inner diameter of the discharge chamber, and the negative pressure chamber is provided with a feed port (3). The compressed air intake assembly (2) comprises a central tube (21), wherein the central tube (21) is installed in the negative pressure chamber of the outer cylinder (1), and the output end of the central tube (21) points to the discharge chamber. The compressed air intake assembly (2) is used to provide a power source for alkali cellulose to enter the negative pressure chamber.
2. The alkali cellulose recovery device according to claim 1, characterized in that: The negative pressure chamber comprises a first pipe (11), an air blocking portion (13) and a baffle (5); one side of the first pipe (11) is connected to the baffle (5); the baffle (5) is provided with a through hole; the other side of the first pipe (11) is connected to the air blocking portion (13); the first pipe (11) is connected to the discharge chamber via the air blocking portion (13); and the air blocking portion (13) is a conical ring structure.
3. The alkali cellulose recovery device according to claim 1, characterized in that: The discharge chamber comprises a second pipe (12), the inner diameter of the second pipe (12) is smaller than the inner diameter of the first pipe (11), the second pipe (12) is connected to the first pipe (11) via an air blocking portion (13), and the second pipe (12) is provided with a discharge port (4).
4. The alkali cellulose recovery device according to claim 1, characterized in that: The outer cylinder (1) is a plastic cylinder.
5. The alkali cellulose recovery device according to claim 1, characterized in that: The compressed air intake assembly (2) comprises a central tube (21) and a quick connector (22), wherein the quick connector (22) is arranged outside the through hole of the baffle (5), the central tube (21) is arranged and fixed inside the outer cylinder (1), and the quick connector (22) is in communication with the central tube (21).
6. The alkali cellulose recovery device according to claim 5, characterized in that: The central tube (21) is a plastic tube, the central tube (21) is in communication with a through hole of the baffle (5), and the central tube (21) and the baffle (5) are fixedly connected by plastic welding.
7. The alkali cellulose recovery device according to claim 5, characterized in that: The quick connector (22) is connected to a compressed air pipe, and a compressed air solenoid valve is provided on the compressed air pipe.
8. The alkali cellulose recovery device according to claim 5, characterized in that: The length difference between the central tube (21) and the first tube (11) is 0-2 mm.
9. The alkali cellulose recovery device according to claim 1, characterized in that: The feed port (3) is equipped with a speaker interface (6), and the speaker interface (6) is provided with a counterweight assembly.