A feeding system for the production of sodium carboxymethyl cellulose

Abstract

The present invention is applicable to the technical field of sodium carboxymethyl cellulose production, and provides a feeding system for sodium carboxymethyl cellulose production, including a base unit, the base unit including a horizontally arranged feeding assembly and an installation cabinet, the installation cabinet having a pretreatment silo unit installed on the side wall close to the feeding assembly; the pretreatment silo unit includes a top silo arranged in a rectangular cone structure and a bottom silo arranged in a cylindrical structure, the side wall of the top silo is installed with a bag support unit, and the top of the top silo is installed with a material lifting unit. The device solves the problem that the weighing result is affected by the strong hygroscopicity of the raw materials during the preparation of sodium carboxymethyl cellulose, and the feeding is affected by the splashing and clogging of the raw materials. It achieves the effect of sealing the feeding and pre-treating the raw materials to avoid moisture affecting the feeding ratio of the weighing machine, and effectively avoids multiple problems such as inaccurate feeding weight, reduced feeding efficiency, and reduced service life of feeding equipment caused by splashing of raw materials and clogging of raw materials.

Description

Technical Field

[0001] The invention relates to the technical field of sodium carboxymethylcellulose production, and more specifically to a feeding system for sodium carboxymethylcellulose production. Background Art

[0002] Sodium carboxymethyl cellulose (CMC-Na for short) is a water-soluble cellulose ether obtained by chemical modification. Sodium carboxymethyl cellulose (CMC-Na) is a carboxymethylated derivative of cellulose and is the main ionic cellulose gum. It is a white to light yellow powder or granule, has strong hygroscopicity, is easily soluble in water, and forms a high viscosity solution under neutral or alkaline conditions. Sodium carboxymethyl cellulose is usually an anionic polymer compound obtained by reacting natural cellulose with caustic soda and monochloroacetic acid.

[0003] The production of CMC-Na mainly adopts a two-step process: first, the alkalization process, in which cellulose reacts with sodium hydroxide to form alkali cellulose; then, alkali cellulose reacts with chloroacetic acid to form CMC-Na. This process is called etherification reaction. Since the raw material for preparing sodium carboxymethyl cellulose, that is, cellulose, has strong hygroscopicity, during the alkalization process, the weight of cellulose will change due to contact with moisture in the air. This affects the weighing result of cellulose and the specific gravity of water during the alkalization reaction, and ultimately causes the viscosity and degree of substitution of the prepared sodium carboxymethyl cellulose to fail to meet production requirements. Therefore, it is necessary to prevent cellulose from absorbing water and moisture and affecting the feeding ratio of sodium carboxymethyl cellulose preparation during the feeding process before the alkalization reaction.

[0004] On the other hand, due to the loose flocculent structure of cellulose itself, it is not only easy to splash during the feeding process, but also to pile up inside the feeding equipment. The cellulose splashing will not only affect the production environment, but also affect the weighing results of cellulose. Cellulose pile-up will cause multiple problems such as inaccurate feeding weight, reduced feeding efficiency and shortened service life of feeding equipment. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a feeding system for sodium carboxymethyl cellulose production, which is sealed during feeding and pre-treated to prevent moisture from affecting the feeding ratio of a weighing machine, while effectively avoiding multiple problems such as inaccurate feeding weight, reduced feeding efficiency and shortened service life of feeding equipment caused by splashing of raw materials and blockage of raw materials.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A feeding system for sodium carboxymethyl cellulose production comprises a base unit, wherein the base unit comprises a horizontally arranged feeding assembly and an installation cabinet, wherein a pretreatment silo unit is installed on a side wall of the installation cabinet close to the feeding assembly; the pretreatment silo unit comprises a top silo arranged in a rectangular cone structure and a bottom silo arranged in a cylindrical structure, a bag support unit is installed on the side wall of the top silo, and a material lifting unit is installed on the top of the top silo; the material lifting unit comprises an inclined lifting cylinder assembly, wherein the lifting cylinder assembly comprises a lifting pipe arranged in a cylindrical structure, and a plurality of groups of anti-blocking cleaning units are symmetrically arranged on the side wall of the lifting pipe.

[0008] The present invention is further configured as follows: the upper part of the top material bin is configured as a rectangular structure, and a bag supporting unit is installed on the side wall; the bottom of the top material bin is configured as a conical structure, and its bottom is connected to the bottom material bin; a bin cover is installed on the top of the top material bin, and an air pump is installed through the side wall close to the installation cabinet.

[0009] The present invention is further configured as follows: two groups of pre-drying components are symmetrically arranged on the inner wall of the bottom material bin, and the pre-drying components include a heating tube arranged through the bottom material bin and a heating wire arranged around the inner wall of the bottom material bin; wherein, the heating wires are arranged in multiple groups equidistantly along the vertical direction, and both ends of the heating wires are respectively connected to the heating tubes.

[0010] By adopting the above technical solution, the airflow generated by the air pump can promote the circulation of cellulose raw materials in the top material bin and the bottom material bin, and finally enter the material lifting unit for feeding. The heating wire is set to an arc-shaped structure that matches the shape of the inner wall of the bottom material bin. When the cellulose raw materials circulate inside the bottom material bin and enter the top material bin, the multiple groups of heating wires arranged around it can preheat the cellulose raw materials, thereby effectively removing the moisture absorbed by the cellulose raw materials due to their strong hygroscopicity.

[0011] The present invention is further configured as follows: the bag-supporting unit comprises a first bag-supporting assembly and a second bag-supporting assembly symmetrically arranged about the top material bin, the first bag-supporting assembly and the second bag-supporting assembly have consistent structures and are arranged facing each other; wherein, the first bag-supporting assembly comprises two groups of bag-supporting rotating rods rotatably mounted on the side wall of the top material bin, and a bag-supporting connecting rod is arranged between the two groups of bag-supporting rotating rods.

[0012] The present invention is further configured as follows: two groups of matching connecting rods are symmetrically arranged on the bag-supporting connecting rod, each group of matching connecting rods is sleeved on the bag-supporting connecting rod, and each group of matching connecting rods is connected to a group of connecting blocks on the side away from the bag-supporting connecting rod; a group of bag-supporting arc plates is arranged between the two groups of connecting blocks, and the bag-supporting arc plates are arranged as a semicircular arc structure with an inner diameter adapted to the outer diameter of the bottom material bin.

[0013] The present invention is further configured as follows: a group of bag-supporting rotating rods on the first bag-supporting assembly and the second bag-supporting assembly are each connected to a group of bag-supporting cylinders, and the two groups of bag-supporting cylinders are symmetrically arranged and respectively connected to another group of bag-supporting rotating rods on the first bag-supporting assembly and the second bag-supporting assembly.

[0014] By adopting the above technical solution, the expansion and contraction of the bag-supporting cylinder can drive a group of bag-supporting rotating rods connected thereto to rotate around the side wall of the top silo, and then synchronously drive another group of bag-supporting rotating rods to rotate through the bag-supporting connecting rod, thereby realizing the rotation of the first bag-supporting assembly or the second bag-supporting assembly. The two groups of bag-supporting cylinders can be synchronously expanded and contracted to make the first bag-supporting assembly and the second bag-supporting assembly rotate synchronously, thereby realizing the opening or tightening of the first bag-supporting assembly and the second bag-supporting assembly. During the synchronous rotation of the bag-supporting connecting rod following the bag-supporting rotating rod, the bag-supporting arc plate can be synchronously driven to rotate by the action of the cooperating connecting rod. During the rotation of the two groups of bag-supporting arc plates, the packaging bag can be opened or clamped to a limited position.

[0015] The present invention is further configured as follows: a lower lifting base is provided on the side of the lifting cylinder assembly close to the top material bin, and an upper lifting base is provided on the side away from the top material bin, a lifting shaft is provided inside the lifting tube along its length direction, the lifting shaft is coaxially arranged with the lifting tube, and a spiral lifting plate is provided around its outer wall.

[0016] The present invention is further configured as follows: a feed pipe is connected to the side of the lifting pipe close to the lower lifting base, and the feed pipe penetrates the top material bin; a discharge bin is connected to the side of the lifting pipe close to the upper lifting base, and the discharge bin is connected to the lifting pipe and is configured as a conical structure.

[0017] The present invention is further configured as follows: a plurality of anti-blocking cleaning units are equidistantly arranged along the length direction of the riser, and the anti-blocking cleaning units include a mounting base mounted on the inner wall of the riser and a swinging assembly rotatably mounted on the mounting base, wherein a cleaning assembly is connected to one end of the swinging assembly away from the mounting base.

[0018] The present invention is further configured as follows: the swing assembly includes a swing connecting rod rotatably mounted on a mounting base, a cleaning assembly is provided at one end of the swing connecting rod away from the mounting base, the cleaning assembly includes a cleaning mounting block mounted on the swing connecting rod, a first cleaning piece and a second cleaning piece are slidably mounted on the cleaning mounting block, the first cleaning piece and the second cleaning piece are symmetrically arranged, and a plurality of groups of cleaning strips are equidistantly arranged thereon.

[0019] By adopting the above technical solution, in the initial state, the swing link remains parallel to the inside of the lifting tube. When the cellulose raw material is wound around the lifting shaft and blocked, the swing drive drives the swing link to rotate around the mounting base so that the cleaning component at its end contacts the lifting shaft. Then, the telescopic cylinder drives the cleaning mounting block to move, and then the first cleaning member and the second cleaning member slide, and the cellulose raw material wound around the lifting shaft is cleaned by the cleaning strips on the first cleaning member and the second cleaning member.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. After the cellulose raw material enters the bottom silo, the airflow generated by the air pump circulates in the top silo and the bottom silo. At the same time, multiple groups of heating wires arranged around the inner wall of the bottom silo preheat the cellulose raw material. This effectively removes the moisture absorbed by the cellulose raw material due to its strong hygroscopicity, avoids inaccurate cellulose weighing results caused by moisture absorption by the cellulose raw material, and avoids changes in the specific gravity of water during the alkalization reaction of sodium carboxymethyl cellulose due to moisture absorption by the cellulose raw material, which ultimately leads to the problem that the viscosity and degree of substitution of the prepared sodium carboxymethyl cellulose do not meet the production requirements.

[0022] 2. By opening or tightening the first bag support component and the second bag support component, the packaging bag can not only be opened to facilitate docking with the bottom material bin, but also the packaging bag can be clamped and limited so that the packaging bag always stays in contact with the outer wall of the bottom material bin during the feeding process. This can not only prevent the splashing of raw materials from affecting the environment, but also prevent the cellulose raw materials from being continuously exposed to the air during the feeding process to absorb too much moisture, resulting in the cellulose raw materials absorbing too much moisture, which cannot be completely removed even after subsequent preheating treatment.

[0023] 3. Through the swing of the swing link and the sliding of the first cleaning piece and the second cleaning piece, the cleaning bar can clean the cellulose raw material wound on the lifting shaft, thereby effectively avoiding the problems of reduced feeding efficiency and shortened service life of the feeding equipment due to blockage of the cellulose raw material during the lifting and transportation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 The schematic diagram of the structure of the feeding system for producing sodium carboxymethyl cellulose of the present invention.

[0025] Figure 2 The figure is a schematic diagram of the explosion structure of the feeding system for producing sodium carboxymethyl cellulose of the present invention.

[0026] Figure 3 It is a schematic diagram of the structure of the pretreatment silo unit and the bag support unit in the present invention.

[0027] Figure 4It is a schematic diagram of the explosion structure of the pretreatment silo unit in the present invention.

[0028] Figure 5 It is a schematic diagram of the internal structure of the bottom silo in the present invention.

[0029] Figure 6 It is a schematic diagram of the exploded structure of the bag-supporting unit in the present invention.

[0030] Figure 7 This is a state change diagram of the bag support unit in the present invention.

[0031] Figure 8 It is a schematic diagram of the explosion structure of the material lifting unit in the present invention.

[0032] Fig. 9 It is a schematic diagram of the explosion structure of the lifting cylinder assembly in the present invention.

[0033] Fig.10 It is a state change diagram of the anti-blocking cleaning unit in the present invention.

[0034] Fig.11 It is a schematic diagram of the explosion structure of the anti-blocking cleaning unit in the present invention.

[0035] Fig.12 It is a schematic diagram of the structure of the cleaning component in the present invention.

[0036] Description of reference numerals: 1, base unit; 11, feeding assembly; 111, mounting frame; 112, conveyor belt; 12, mounting cabinet;

[0037] 2. Pretreatment silo unit; 21. Top silo; 22. Bottom silo; 23. Silo cover; 24. Pre-drying assembly; 241. Heating tube; 242. Heating wire; 25. Air pump;

[0038] 3. Bag support unit; 31. First bag support assembly; 311. Bag support cylinder; 312. Bag support rotating rod; 313. Bag support connecting rod; 314. Matching connecting rod; 315. Connecting block; 316. Bag support arc plate; 32. Second bag support assembly;

[0039] 4. Material lifting unit; 41. Upper lifting base; 42. Lifting cylinder assembly; 421. Lifting pipe; 422. Lifting shaft; 423. Lifting drive; 424. Spiral lifting plate; 425. Feeding pipe; 426. Discharging bin; 43. Lower lifting base;

[0040] 5. Anti-blocking cleaning unit; 51. Mounting base; 52. Swing assembly; 521. Swing drive; 522. Swing connecting rod; 53. Cleaning assembly; 531. Telescopic cylinder; 532. Cleaning mounting block; 533. Cleaning slide rail; 534. First cleaning piece; 535. Second cleaning piece; 536. Cleaning strip. DETAILED DESCRIPTION

[0041] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0042] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0043] See also Figure 1-12 , the present invention provides the following technical solutions:

[0044] For example, see Figure 1-5 and Figure 8-9 , including a base unit 1, a pretreatment silo unit 2 and a material lifting unit 4. The pretreatment silo unit 2 is installed on the base unit 1, and the material lifting unit 4 is installed on the pretreatment silo unit 2. The cellulose raw material enters the material lifting unit 4 from the base unit 1 after being processed by the pretreatment silo unit 2 to complete the feeding.

[0045] See also Figure 1-2 , including a base unit 1, the base unit 1 includes a horizontally arranged feeding assembly 11 and an installation cabinet 12. The feeding assembly 11 is arranged on one side of the installation cabinet 12, and a pretreatment silo unit 2 is arranged on the top thereof. The feeding assembly 11 includes a horizontally arranged mounting frame 111, and a conveyor belt 112 for conveying cellulose raw materials is arranged on the top of the mounting frame 111. The installation cabinet 12 is arranged in a rectangular structure, and the pretreatment silo unit 2 is installed on the side wall close to the feeding assembly 11. The bagged cellulose raw materials can be transported to the bottom of the pretreatment silo unit 2 through the conveyor belt 112, and after the bag is opened, it enters the pretreatment silo unit 2 for pretreatment before feeding.

[0046] See also Figure 1-5The pretreatment silo unit 2 is arranged on the top of the conveyor belt 112. The pretreatment silo unit 2 includes a top silo 21 arranged in a rectangular cone structure and a bottom silo 22 arranged in a cylindrical structure. The top silo 21 and the bottom silo 22 are internally connected. The top silo 21 has a rectangular structure at the top and a conical structure at the bottom. The bottom of the conical structure of the top silo 21 is connected to the bottom silo 22. A silo cover 23 is installed on the top of the top silo 21. A material lifting unit 4 is installed on the top of the silo cover 23. The material lifting unit 4 penetrates the silo cover 23 and extends downward into the top silo 21. An air pump 25 is installed on the side wall of the rectangular structure of the top silo 21 near the installation cabinet 12. The air pump 25 penetrates the top silo 21. After the cellulose raw material in the packaging bag enters the bottom silo 22, the airflow generated by the air pump 25 can promote the circulation of the cellulose raw material in the top silo 21 and the bottom silo 22, and finally enters the material lifting unit 4 for feeding.

[0047] See also Figure 1-5 Two groups of pre-drying components 24 are symmetrically arranged on the inner wall of the bottom material bin 22. The pre-drying components 24 include a heating tube 241 that penetrates the bottom material bin 22 and a heating wire 242 that surrounds the inner wall of the bottom material bin 22. Multiple groups of heating wires 242 are equidistantly arranged in the vertical direction, and both ends of the heating wires 242 are respectively connected to the heating tube 241. The heating wires 242 are arranged in an arc-shaped structure that matches the shape of the inner wall of the bottom material bin 22. When the cellulose raw material circulates inside the bottom material bin 22 and enters the top material bin 21, the multiple groups of heating wires 242 that are arranged around the bottom material bin 22 can pre-heat the cellulose raw material, thereby effectively removing the moisture absorbed by the cellulose raw material due to its strong hygroscopicity.

[0048] Specifically, after the cellulose raw material enters the bottom silo 22, the airflow generated by the air pump 25 circulates in the top silo 21 and the bottom silo 22, and at the same time, the multiple groups of heating wires 242 arranged around the inner wall of the bottom silo 22 preheat the cellulose raw material. This achieves the purpose of effectively removing the moisture absorbed by the cellulose raw material due to its strong hygroscopicity, avoiding the inaccurate weighing result of the cellulose caused by the moisture absorption of the cellulose raw material, and avoiding the change of the specific gravity of water in the alkalization reaction of sodium carboxymethyl cellulose caused by the moisture absorption of the cellulose raw material, which ultimately leads to the problem that the viscosity and degree of substitution of the prepared sodium carboxymethyl cellulose do not meet the production requirements.

[0049] See also Figure 1-2 and Figure 8-9The material lifting unit 4 includes a lifting cylinder assembly 42 which is arranged obliquely. A lower lifting base 43 is arranged on the side of the lifting cylinder assembly 42 close to the top material bin 21, and an upper lifting base 41 is arranged on the side away from the top material bin 21. The upper lifting base 41 can be installed on a preparation bin for preparing sodium carboxymethyl cellulose (not shown in the drawings). The lifting cylinder assembly 42 is connected to the top material bin 21 through the lower lifting base 43, and the lifting cylinder assembly 42 is connected to the preparation bin through the upper lifting base 41, thereby ensuring the stability of the installation of the lifting cylinder assembly 42.

[0050] See also Figure 1-2 and Figure 8-9 The lifting cylinder assembly 42 includes a lifting pipe 421 configured as a cylindrical structure, and the lifting pipe 421 is configured as a hollow structure. A feeding pipe 425 is connected to the lifting pipe 421 near the lower lifting base 43, and the feeding pipe 425 passes through the lower lifting base 43 and the top material bin 21 downward in sequence. The feeding pipe 425 is connected to the inside of the lifting pipe 421, and the bottom of the feeding pipe 425 is located at the bottom of the silo cover 23 and is arranged near the bottom of the silo cover 23. The cellulose raw material inside the top material bin 21 can enter the inside of the feeding pipe 425 under the action of the airflow, and finally enter the inside of the lifting pipe 421 through the feeding pipe 425 for feeding. A discharge bin 426 is connected to the lifting pipe 421 near the upper lifting base 41, and the discharge bin 426 is connected to the lifting pipe 421 and is configured as a conical structure. The top of the discharge bin 426 is connected to the preparation bin for preparing sodium carboxymethyl cellulose, and the cellulose raw material inside the lifting pipe 421 can enter the preparation bin through the discharge bin 426 to complete the feeding.

[0051] See also Figure 1-2 and Figure 8-9 , a lifting shaft 422 is arranged inside the lifting tube 421 along its length direction, the lifting shaft 422 is arranged coaxially with the lifting tube 421, and the lifting shaft 422 is connected to a lifting drive 423 at one end close to the upper lifting base 41, and the lifting drive 423 can drive the lifting shaft 422 to rotate. A spiral lifting plate 424 is arranged around the outer wall of the lifting shaft 422, and the spiral lifting plate 424 is arranged along the length direction of the lifting shaft 422, and the intervals along the length direction due to the spiral arrangement are consistent. After the cellulose raw material enters the interior of the lifting tube 421, the lifting drive 423 drives the lifting shaft 422 to rotate, and synchronously drives the spiral lifting plate 424 to rotate. During the rotation of the spiral lifting plate 424, the cellulose raw material entering the interior of the lifting tube 421 can be gradually lifted and transported, and while completing the feeding of the cellulose raw material, the cellulose raw material can also be prevented from being blocked to a certain extent.

[0052] For example 2, please refer to Figure 1-3 and Figure 6-7, this second embodiment makes the following improvements on the basis of the first embodiment: although the cellulose raw material entering the bottom material bin 22 can be preheated by the cooperation of the pre-drying component 24 and the air pump 25, so as to remove the moisture in the cellulose raw material. However, because the cellulose raw material itself has extremely strong hygroscopicity, if the bagged cellulose raw material is continuously exposed to the air during the feeding process, the cellulose raw material will absorb more moisture. Even if a preheating treatment is performed subsequently, the moisture absorbed by the cellulose raw material cannot be completely removed. Therefore, it is necessary to set a bag support unit 3, which can assist in opening the packaging bag during the feeding process of the cellulose raw material, and can also make the packaging bag fit with the bottom material bin 22 during the subsequent feeding. In this way, the environment inside the packaging bag is kept sealed during the feeding process, and the cellulose raw material is prevented from being continuously exposed to the air during the feeding process, resulting in excessive moisture absorption, which cannot be completely removed even after preheating treatment.

[0053] See also Figure 1-3 and Figure 6-7 A bag-supporting unit 3 is installed on the side wall of the upper rectangular structure of the top material bin 21. The bag-supporting unit 3 includes a first bag-supporting assembly 31 and a second bag-supporting assembly 32 which are symmetrically arranged about the top material bin 21. The first bag-supporting assembly 31 and the second bag-supporting assembly 32 have the same structure and are arranged opposite to each other. After the bagged cellulose raw material is opened, the first bag-supporting assembly 31 and the second bag-supporting assembly 32 can be relatively opened and extended into the packaging bag to assist in opening the packaging bag and docking it with the bottom material bin 22. After the packaging bag is docked with the bottom material bin 22, the operator can make the packaging bag fit with the outer wall of the bottom material bin 22, and then relatively tighten the first bag-supporting assembly 31 and the second bag-supporting assembly 32 to clamp and limit the packaging bag, so as to ensure that the packaging bag is always in contact with the outer wall of the bottom material bin 22 during the feeding process, thereby creating a sealed environment inside the packaging bag, and avoiding the problem that the cellulose raw material is continuously exposed to the air during the feeding process and absorbs too much moisture, which cannot be removed later.

[0054] See also Figure 1-3 and Figure 6-7The first bag-supporting assembly 31 includes two groups of bag-supporting rotating rods 312 rotatably mounted on the side wall of the material-supporting bin 21. The two groups of bag-supporting rotating rods 312 are symmetrically arranged, and a bag-supporting connecting rod 313 is arranged between the two groups of bag-supporting rotating rods 312. The two groups of bag-supporting rotating rods 312 are connected by the bag-supporting connecting rod 313. A group of bag-supporting cylinders 311 are connected to each of the groups of bag-supporting rotating rods 312 on the first bag-supporting assembly 31 and the second bag-supporting assembly 32. The bag-supporting cylinders 311 are telescopically driven to drive a group of bag-supporting rotating rods 312 connected thereto to rotate around the side wall of the material-supporting bin 21, and then the other group of bag-supporting rotating rods 312 are synchronously driven to rotate by the bag-supporting connecting rod 313, thereby realizing the rotation of the first bag-supporting assembly 31 or the second bag-supporting assembly 32. The two groups of bag-supporting cylinders 311 are symmetrically arranged, and are respectively connected to the other group of bag-supporting rotating rods 312 on the first bag-supporting assembly 31 and the second bag-supporting assembly 32. The two groups of bag-stretching cylinders 311 are extended and retracted synchronously, so that the first bag-stretching assembly 31 and the second bag-stretching assembly 32 can be rotated synchronously, thereby realizing the opening or tightening of the first bag-stretching assembly 31 and the second bag-stretching assembly 32 .

[0055] See also Figure 1-3 and Figure 6-7 Two groups of matching connecting rods 314 are symmetrically arranged on the bag-supporting connecting rod 313. Each group of matching connecting rods 314 is sleeved on the bag-supporting connecting rod 313, and a group of connecting blocks 315 are connected to the side away from the bag-supporting connecting rod 313. A group of bag-supporting arc plates 316 are arranged between the two groups of connecting blocks 315. The bag-supporting arc plates 316 are arranged as a semicircular arc structure whose inner diameter is adapted to the outer diameter of the bottom material bin 22. When the bag-supporting connecting rod 313 rotates synchronously with the bag-supporting rotating rod 312, the bag-supporting arc plates 316 can be synchronously driven to rotate through the action of the matching connecting rod 314. During the rotation of the two groups of bag-supporting arc plates 316, the packaging bag can be opened or clamped to limit the position.

[0056] Specifically, after the bagged cellulose raw material is transported to the bottom material bin 22, the staff can unpack the packaging bag. At this time, the two sets of bag-supporting cylinders 311 are extended and retracted to drive the bag-supporting rotating rods 312 to rotate synchronously, so as to realize the opening of the first bag-supporting assembly 31 and the second bag-supporting assembly 32. The bag-supporting arc plates 316 on the first bag-supporting assembly 31 and the second bag-supporting assembly 32 are extended into the packaging bag to assist the packaging bag to be opened and docked with the bottom material bin 22.

[0057] After the packaging bag is docked with the bottom material bin 22, the operator can fit the portion of the packaging bag at the bottom of the first bag support assembly 31 and the second bag support assembly 32 with the outer wall of the bottom material bin 22, so that the top of the packaging bag can be released from the first bag support assembly 31 and the second bag support assembly 32. Then, the two sets of bag support cylinders 311 are extended and driven to rotate the bag support rotating rods 312 synchronously, so that the first bag support assembly 31 and the second bag support assembly 32 are relatively tightened. During the tightening process, the two sets of bag support arc plates 316 rotate around the side wall of the top material bin 21 through the bag support rotating rods 312, so as to move downward in the vertical direction, thereby clamping and limiting the packaging bag from the outer wall of the packaging bag. It is ensured that the packaging bag is always in contact with the outer wall of the bottom material bin 22 during the loading process, thereby creating a sealed environment inside the packaging bag.

[0058] By opening or tightening the first bag support component 31 and the second bag support component 32, not only can the packaging bag be opened to facilitate docking with the bottom material bin 22, but the packaging bag can also be clamped and limited so that the packaging bag always stays in contact with the outer wall of the bottom material bin 22 during the feeding process. This can not only prevent the splashing of raw materials from affecting the environment, but also effectively prevent the cellulose raw materials from being continuously exposed to the air during the feeding process to absorb too much moisture, resulting in the cellulose raw materials absorbing too much moisture, which cannot be completely removed even after subsequent preheating treatment.

[0059] For example 3, please refer to Figure 9-12 , the third embodiment is improved on the basis of the second embodiment as follows: although the opening or tightening of the first bag support component 31 and the second bag support component 32 can effectively prevent the cellulose raw material from being continuously exposed to the air and absorbing too much moisture during the feeding process, resulting in the cellulose raw material absorbing too much moisture, which ultimately affects the change in the specific gravity of water during the alkalization reaction of the preparation of sodium carboxymethyl cellulose, resulting in the viscosity and substitution degree of the prepared sodium carboxymethyl cellulose not meeting the production requirements. However, during the lifting and conveying process of the cellulose raw material inside the material lifting unit 4, due to its own flocculent structure, it is easy to be entangled on the lifting shaft 422 during the conveying process, thereby causing the cellulose raw material to be blocked. Not only does it reduce the feeding efficiency of the cellulose raw material, but it may also cause the service life of the material lifting unit 4 to decrease due to the blockage. Therefore, it is necessary to set an anti-blocking cleaning unit 5 to clean the entangled cellulose raw material after the cellulose raw material is wound on the lifting shaft 422.

[0060] See also Figure 9-12The side wall of the lifting tube 421 is symmetrically provided with several groups of anti-blocking cleaning units 5, and several groups of anti-blocking cleaning units 5 are equidistantly provided along the length direction of the lifting tube 421, so as to clean the lifting shaft 422 from different positions. The anti-blocking cleaning unit 5 includes a mounting base 51 mounted on the inner wall of the lifting tube 421 and a swinging assembly 52 rotatably mounted on the mounting base 51, and a cleaning assembly 53 is connected to one end of the swinging assembly 52 away from the mounting base 51. After the swinging assembly 52 rotates relative to the mounting base 51, the cleaning assembly 53 at its end can contact the lifting shaft 422, and then the cellulose raw material wound around the lifting shaft 422 can be cleaned by the cleaning assembly 53.

[0061] See also Figure 9-12 The swing assembly 52 includes a swing drive 521 installed inside the mounting base 51, and the output end of the swing drive 521 is connected to a swing link 522, and the swing drive 521 can drive the swing link 522 to rotate around the mounting base 51. The swing link 522 is rotatably mounted on the mounting base 51, and a cleaning assembly 53 is provided at one end of the swing link 522 away from the mounting base 51. The length of the swing link 522 is adapted to the inner diameter of the lifting tube 421. After the swing link 522 rotates around the mounting base 51, the cleaning assembly 53 at its end can contact the lifting shaft 422.

[0062] See also Figure 9-12 The cleaning assembly 53 includes a telescopic cylinder 531 installed on the swing link 522. The telescopic cylinder 531 runs through the swing link 522 and is connected to a cleaning mounting block 532 at its output end. The telescopic cylinder 531 can drive the cleaning mounting block 532 to move when it is telescopic. A cleaning slide rail 533 is provided on the cleaning mounting block 532, and a first cleaning member 534 is slidably installed on the cleaning slide rail 533. A second cleaning member 535 is installed on the cleaning mounting block 532 at one end away from the first cleaning member 534. The first cleaning member 534 and the second cleaning member 535 have the same structure and are symmetrically arranged. Multiple groups of cleaning strips 536 are equidistantly arranged on the first cleaning member 534 and the second cleaning member 535, respectively, and the multiple groups of cleaning strips 536 are equidistantly arranged.

[0063] Specifically, in the initial state, the swing link 522 maintains a parallel state with the inside of the lifting tube 421. When the cellulose raw material is wound around the lifting shaft 422 and blocked, the swing drive 521 drives the swing link 522 to rotate around the mounting base 51, so that the cleaning assembly 53 at its end contacts the lifting shaft 422. Then, the telescopic cylinder 531 telescopically drives the cleaning mounting block 532 to move, so that the first cleaning member 534 and the second cleaning member 535 contact the cellulose raw material wound on the lifting shaft 422. The telescopic cylinder 531 continues to telescope, and under the action of the cellulose raw material, the first cleaning member 534 slides along the cleaning slide rail 533, thereby continuously achieving the approach and distance from the second cleaning member 535, and in this process, the wound cellulose raw material is gradually scattered. Thus, through the sliding between the first cleaning member 534 and the second cleaning member 535, the cellulose raw material wound on the lifting shaft 422 is cleaned by the cleaning strips 536 on the first cleaning member 534 and the second cleaning member 535. Through the swing of the swing link 522 and the sliding of the first cleaning piece 534 and the second cleaning piece 535, the cleaning bar 536 can clean the cellulose raw material wound around the lifting shaft 422, thereby effectively avoiding problems such as reduced feeding efficiency and shortened service life of the feeding equipment due to blockage of the cellulose raw material during the lifting and transportation process.

[0064] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

Claims

1. A feeding system for the production of sodium carboxymethyl cellulose, characterized in that: The base unit (1) comprises a horizontally arranged feeding assembly (11) and an installation cabinet (12), wherein a pre-treatment silo unit (2) is installed on a side wall of the installation cabinet (12) close to the feeding assembly (11); The pretreatment silo unit (2) comprises a top silo (21) configured as a rectangular cone structure and a bottom silo (22) configured as a cylindrical structure, a bag support unit (3) being installed on the side wall of the top silo (21), and a material lifting unit (4) being installed on the top of the top silo (21); The material lifting unit (4) comprises a lifting cylinder assembly (42) arranged obliquely, the lifting cylinder assembly (42) comprising a lifting pipe (421) arranged in a cylindrical structure, and a plurality of groups of anti-blocking cleaning units (5) are symmetrically arranged on the side wall of the lifting pipe (421); The upper portion of the top material bin (21) is configured as a rectangular structure, and a bag-supporting unit (3) is installed on the side wall; the bottom of the top material bin (21) is configured as a conical structure, and its bottom is connected to the bottom material bin (22); a bin cover (23) is installed on the top of the top material bin (21), and an air pump (25) is installed through the side wall of the top material bin (21) on the side close to the installation cabinet (12); Two groups of pre-drying components (24) are symmetrically arranged on the inner wall of the bottom material bin (22), and the pre-drying components (24) include a heating pipe (241) arranged to penetrate the bottom material bin (22) and a heating wire (242) arranged to surround the inner wall of the bottom material bin (22); Wherein, the heating wires (242) are arranged in a plurality of groups at equal intervals in the vertical direction, and both ends of the heating wires (242) are respectively connected to the heating tubes (241); The bag-supporting unit (3) comprises a first bag-supporting assembly (31) and a second bag-supporting assembly (32) which are symmetrically arranged with respect to the material-supporting bin (21); the first bag-supporting assembly (31) and the second bag-supporting assembly (32) have the same structure and are arranged facing each other; Wherein, the first bag-supporting assembly (31) comprises two groups of bag-supporting rotating rods (312) rotatably mounted on the side wall of the top material bin (21), and a bag-supporting connecting rod (313) is arranged between the two groups of bag-supporting rotating rods (312); Two groups of matching connecting rods (314) are symmetrically arranged on the bag-supporting connecting rod (313); each group of matching connecting rods (314) is sleeved on the bag-supporting connecting rod (313), and each group of matching connecting rods (314) is connected to a group of connecting blocks (315) on the side away from the bag-supporting connecting rod (313); A group of bag-supporting arc plates (316) are arranged between the two groups of connecting blocks (315), and the bag-supporting arc plates (316) are arranged as semicircular arc structures whose inner diameters are adapted to the outer diameters of the bottom material bin (22); A group of bag-supporting rotating rods (312) on the first bag-supporting assembly (31) and the second bag-supporting assembly (32) are each connected to a group of bag-supporting cylinders (311); the two groups of bag-supporting cylinders (311) are symmetrically arranged and are respectively connected to another group of bag-supporting rotating rods (312) on the first bag-supporting assembly (31) and the second bag-supporting assembly (32); By opening or tightening the first bag-supporting assembly (31) and the second bag-supporting assembly (32), the packaging bag is clamped and limited, so that the packaging bag always remains in contact with the outer wall of the bottom material bin (22) during the loading process.

2. A feeding system for sodium carboxymethylcellulose production according to claim 1, characterized in that: The lifting tube assembly (42) is provided with a lower lifting base (43) on the side close to the material lifting bin (21), and an upper lifting base (41) on the side away from the material lifting bin (21). A lifting shaft (422) is provided inside the lifting tube (421) along its length direction. The lifting shaft (422) is coaxially arranged with the lifting tube (421), and a spiral lifting plate (424) is arranged around its outer wall.

3. A feeding system for sodium carboxymethyl cellulose production according to claim 2, characterized in that: A feeding pipe (425) is connected to a side of the lifting pipe (421) close to the lower lifting base (43), and the feeding pipe (425) is arranged to penetrate the top material bin (21); A discharge bin (426) is connected to a side of the lifting pipe (421) close to the upper lifting base (41); the discharge bin (426) is in communication with the lifting pipe (421) and is configured as a conical structure.

4. A feeding system for sodium carboxymethyl cellulose production according to claim 1, characterized in that: The anti-blocking cleaning units (5) are arranged in a plurality of groups at equal intervals along the length direction of the riser (421). The anti-blocking cleaning units (5) comprise a mounting base (51) mounted on the inner wall of the riser (421) and a swing assembly (52) rotatably mounted on the mounting base (51), and a cleaning assembly (53) is connected to one end of the swing assembly (52) away from the mounting base (51).

5. A feeding system for sodium carboxymethyl cellulose production according to claim 4, characterized in that: The swing assembly (52) comprises a swing link (522) rotatably mounted on a mounting base (51); a cleaning assembly (53) is arranged at one end of the swing link (522) away from the mounting base (51); the cleaning assembly (53) comprises a cleaning mounting block (532) mounted on the swing link (522); a first cleaning member (534) and a second cleaning member (535) are slidably mounted on the cleaning mounting block (532); the first cleaning member (534) and the second cleaning member (535) are symmetrically arranged, and a plurality of groups of cleaning strips (536) are equidistantly arranged on the first cleaning member (534) and the second cleaning member (535).

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