A filling device for solid ammonium sulfite and a filling method thereof

Abstract

This invention belongs to the field of solid ammonium sulfite technology, and provides a filling device and method for solid ammonium sulfite. The device includes a cylinder with a pre-discharge cylinder slidably connected to its bottom. A pre-discharge mechanism is located at the bottom of the pre-discharge cylinder. The filling mechanism includes a discharge cylinder located at the bottom of the pre-discharge mechanism. A tail gas extraction component is fixed to the outer wall of the discharge cylinder, and a tail gas pipe is provided on the tail gas extraction component. The tail gas pipe is connected to a tail gas treatment device. This invention provides simultaneous dust removal and exhaust, eliminating the need for manual bag compaction: through continuous negative pressure suction from the tail gas outer cylinder and tail gas holes, it can simultaneously extract ammonium sulfite dust and expanding air inside the bag during filling, suppressing dust overflow at the source. The material inside the bag remains compacted, eliminating the need for repeated manual lifting and compaction after filling, significantly improving efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of solid ammonium sulfite equipment, and specifically relates to a filling device and filling method for solid ammonium sulfite. Background Technology

[0002] Solid ammonium sulfite is a fine crystalline powder material that is lightweight, loose, prone to dust generation, easily absorbs moisture, and is easily suspended in the air when poured.

[0003] In existing technologies, solid ammonium sulfite is generally packaged using an open, direct feeding method. During the filling process, the ammonium sulfite powder falls and impacts the bag, which raises a large amount of dust. This not only causes environmental pollution, but also allows a large amount of air to enter the bag, causing it to bulge and the material to be in a loose, suspended state. As a result, after filling, the bag must be manually lifted and tampd repeatedly to allow air to escape and settle, in order to ensure accurate weighing. This method is cumbersome, labor-intensive, and has low filling efficiency.

[0004] Furthermore, existing filling equipment with dust extraction capabilities is prone to clogging of its suction port by fine crystalline dust, leading to suction failure, and the sharp edges of the filling port can easily scratch the packaging bag. Therefore, there is an urgent need for a filling equipment and method that can simultaneously remove dust, prevent clogging, and avoid damaging the packaging bag. Summary of the Invention

[0005] To solve the above technical problems, this invention proposes a filling device and filling method for solid ammonium sulfite.

[0006] The technical solution of this invention is:

[0007] This invention proposes a filling device for solid ammonium sulfite, comprising a cylinder, a pre-discharge cylinder slidably connected to the bottom of the cylinder, and a pre-discharge mechanism at the bottom of the pre-discharge cylinder, characterized in that a filling mechanism is provided at the bottom of the pre-discharge mechanism;

[0008] The filling mechanism includes a discharge cylinder located at the bottom of the pre-discharge mechanism. A tail gas extraction component is fixed on the outer wall of the discharge cylinder. A tail gas pipe is provided on the tail gas extraction component, and the tail gas pipe is connected to a tail gas treatment device.

[0009] Preferably, the pre-discharge mechanism includes two electric push cylinders fixed to the outer wall of the cylinder. The output ends of the two electric push cylinders are fixedly connected to a transmission box. The transmission box is fixedly connected to the bottom of the pre-discharge cylinder. A toothed plate is rotatably connected inside the transmission box. A spiral feed cylinder is fixedly connected to the bottom of the toothed plate. A motor is fixedly connected to the outer wall of the transmission box. A gear is provided at the output end of the motor. The gear meshes with the toothed plate inside the transmission box.

[0010] Preferably, the discharge cylinder is fixedly connected to the bottom of the transmission box, and the spiral discharge cylinder is rotatably connected to the inside of the discharge cylinder.

[0011] Preferably, the exhaust gas extraction component is an exhaust gas outer cylinder fixedly connected to the outer wall of the discharge cylinder. The connection between the bottom of the exhaust gas outer cylinder and the discharge cylinder is rounded. Multiple exhaust gas holes are opened at the rounded corners of the bottom of the exhaust gas outer cylinder, and the multiple exhaust gas holes are arranged in a circular array with the discharge cylinder as the center.

[0012] Preferably, a limit cover is fixedly connected at the connection between the exhaust gas outer cylinder and the discharge cylinder to limit the depth of the exhaust gas outer cylinder inserted into the bag.

[0013] Preferably, the bottom of the discharge cylinder is equipped with a protective mechanism to prevent solid ammonium sulfite from splashing into the tail gas hole.

[0014] Preferably, the protective mechanism includes multiple elastic strips fixedly connected to the bottom arc of the exhaust gas outer cylinder. The multiple elastic strips are distributed at the bottom of the exhaust gas hole, and there is a gap between the exhaust gas hole and the elastic strips. The bottom of the multiple elastic strips is fixedly connected to a sliding cylinder, and the sliding cylinder is slidably connected to the inner wall of the discharge cylinder.

[0015] Preferably, the elastic strip is an inwardly concave arc shape, and the width of the elastic strip is greater than the diameter of the exhaust port.

[0016] A method for filling solid ammonium sulfite using filling equipment includes the following steps:

[0017] Insert the discharge cylinder and the exhaust gas outer cylinder into the opening of the packaging bag, and seal the opening of the bag against the outer wall of the exhaust gas outer cylinder.

[0018] Start the exhaust gas treatment device to continuously draw air into the bag through the exhaust gas port, so that the bag is in a slightly negative pressure state.

[0019] Solid ammonium sulfite is filled into the bag through the discharge cylinder, and dust and expanding gas are extracted simultaneously using negative pressure during the filling process.

[0020] It also includes the following steps:

[0021] When the material inside the bag accumulates to a height that contacts and pushes the slide cylinder, the slide cylinder slides upward relative to the discharge cylinder, causing the elastic strip to contract inward and gradually block the exhaust hole until filling is complete.

[0022] The present invention has the following advantages and effects compared with the prior art:

[0023] (1) Synchronous dust removal and exhaust, no need for manual bag compaction: Through the continuous negative pressure suction of the exhaust cylinder and exhaust hole, the ammonium sulfite dust and the expanded air inside the bag can be sucked up in real time and synchronously during filling and feeding, which suppresses the overflow of dust from the source. The material inside the bag is in a dense state, and there is no need for manual repeated lifting and compaction after filling, which significantly improves efficiency.

[0024] (2) Rounded corner design of filling port to protect the packaging bag: The connection between the bottom of the exhaust gas outer cylinder and the discharge cylinder is rounded, and the exhaust gas hole is located at the rounded corner. The surrounding area is smooth, which makes it easy to insert into the bag mouth, avoids scratching the inner film of the packaging bag and abrading the bag mouth, and prevents powder and gas leakage from the gaps in the bag mouth.

[0025] (3) Adaptive anti-clogging: The elastic strip in the protective mechanism can prevent dust from splashing into the tail gas hole under normal conditions; when the material accumulates to a certain height, the material pushes the slide cylinder to rise, and the elastic strip contracts inward to gradually block the tail gas hole, preventing the material from being sucked into the tail gas treatment device, effectively solving the problem of fine crystal dust clogging the pipeline and equipment. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a partial cross-sectional view of the present invention;

[0028] Figure 3 This is a schematic diagram of the pre-discharge mechanism of the present invention;

[0029] Figure 4 This is a schematic diagram of the filling mechanism of the present invention;

[0030] Figure 5 This is a schematic diagram of the spiral feed cylinder structure of the present invention;

[0031] Figure 6 for Figure 4 Enlarged view of point A in the middle.

[0032] Figure label:

[0033] 1. Cylinder; 2. Pre-discharge mechanism; 201. Electric pusher cylinder; 202. Pre-discharge cylinder; 203. Transmission box; 204. Screw feed cylinder; 205. Motor; 206. Toothed plate; 3. Filling mechanism; 301. Discharge cylinder; 302. Outer cylinder for exhaust gas; 303. Exhaust gas port; 304. Limit cover; 305. Exhaust gas pipe; 4. Protective mechanism; 401. Elastic strip; 402. Slide cylinder. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, specific embodiments will now be described in further detail. It should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of the invention.

[0035] Example 1:

[0036] like Figures 1-6As shown, this invention provides a filling device for solid ammonium sulfite, including a cylinder 1. A pre-discharge cylinder 202 is slidably connected to the bottom of the cylinder 1. A pre-discharge mechanism 2 is provided at the bottom of the pre-discharge cylinder 202. The pre-discharge mechanism 2 includes two electric push cylinders 201 fixed to the outer wall of the cylinder 1. A transmission box 203 is fixedly connected to the output end of the two electric push cylinders 201. The transmission box 203 is fixedly connected to the bottom of the pre-discharge cylinder 202. A toothed plate 206 is rotatably connected inside the transmission box 203. A spiral feed cylinder 204 is fixedly connected to the bottom of the toothed plate 206. A motor 205 is fixedly connected to the outer wall of the transmission box 203. A gear is provided at the output end of the motor 205. The gear meshes with the toothed plate 206 inside the transmission box 203. A filling device is provided at the bottom of the transmission box 203. The filling mechanism 3 includes a discharge cylinder 301 located at the bottom of the transmission box 203. A tail gas extraction component is fixedly provided on the outer wall of the discharge cylinder 301. A tail gas pipe 305 is provided on the tail gas extraction component. The tail gas pipe 305 is connected to a tail gas treatment device, which is a pulse bag dust collector. The discharge cylinder 301 is fixedly connected to the bottom of the transmission box 203, and the spiral feed cylinder 204 is rotatably connected to the inside of the discharge cylinder 301. The tail gas extraction component is a tail gas outer cylinder 302 fixedly connected to the outer wall of the discharge cylinder 301. The connection between the bottom of the tail gas outer cylinder 302 and the discharge cylinder 301 is rounded. Multiple tail gas holes 303 are opened at the rounded corners of the bottom of the tail gas outer cylinder 302. The multiple tail gas holes 303 are arranged in a circumferential array with the discharge cylinder 301 as the center.

[0037] After the bag being filled is moved to the bottom of the equipment and the bag opening is opened, the pre-discharge cylinder 202 is controlled by the electric push cylinder 201 to slide down inside the cylinder 1, so that the filling mechanism 3 and the protective mechanism 4 at the bottom of the equipment are inserted into the bag and the bag opening is tied to the outer wall of the exhaust gas outer cylinder 302. Then, through the meshing of the gear on the motor 205 and the toothed plate 206, the motor 205 can drive the spiral feed cylinder 204 to rotate inside the discharge cylinder 301, thereby transferring the solid ammonium sulfite inside the cylinder 1 and the pre-discharge cylinder 202 to the bottom for feeding.

[0038] By connecting an external exhaust gas treatment device to the exhaust gas pipe 305, the suction force generated by the exhaust gas treatment device into the exhaust gas outer cylinder 302 during the filling process can draw the gas and dust generated when the device fills solid ammonium sulfite into the bag into the exhaust gas treatment device for treatment through the exhaust gas hole 303, the exhaust gas outer cylinder 302 and the exhaust gas pipe 305.

[0039] A limit cover 304 is fixedly connected at the connection between the exhaust gas outer cylinder 302 and the discharge cylinder 301 to limit the depth of the exhaust gas outer cylinder 302 inserted into the bag.

[0040] Working principle: During the feeding process, an external exhaust gas treatment device is connected to the exhaust gas pipe 305. During the filling process, the suction force generated by the exhaust gas treatment device inside the exhaust gas outer cylinder 302 draws the gas and dust generated when filling solid ammonium sulfite into the bag into the exhaust gas treatment device through the exhaust gas port 303, the exhaust gas outer cylinder 302, and the exhaust gas pipe 305 for treatment. The exhaust gas port 303 is located around the outlet of the discharge cylinder 301 and has smooth rounded corners, facilitating the insertion of the filling part into the bag opening for filling and preventing unevenness around the discharge cylinder 301 from causing the filling nozzle to be inserted... During the filling process, the inner film of the packaging bag is scratched and the opening of the woven bag is worn. At the same time, the sharp corners of the discharge cylinder are prevented from snagging on the bag opening, causing deformation and poor sealing. This eliminates the problems of powder leakage, air leakage and dust overflow from the bag opening gaps. Combined with the exhaust port 303 arranged around the outlet of the discharge cylinder and the smooth rounded corner transition of the inner wall, the discharge cylinder can be inserted into the bag opening smoothly and without obstruction during filling. The bag opening can be tightly sealed with the outer wall of the discharge cylinder. With the continuous negative pressure suction of the exhaust cylinder 302 and the exhaust pipe 305, the ammonium sulfite dust, the expanded air inside the bag and the exhaust gas can be sucked up in real time and simultaneously, inhibiting the escape and diffusion of dust from the source.

[0041] A protective mechanism 4 is provided at the bottom of the discharge cylinder 301 to prevent solid ammonium sulfite from splashing into the exhaust port 303. The protective mechanism 4 includes multiple elastic strips 401 fixedly connected to the bottom arc of the exhaust outer cylinder 302. The multiple elastic strips 401 are distributed at the bottom of the exhaust port 303, and there is a gap between the exhaust port 303 and the elastic strips 401. A sliding cylinder 402 is fixedly connected to the bottom of the multiple elastic strips 401. The sliding cylinder 402 is slidably connected to the inner wall of the discharge cylinder 301. Each elastic strip 401 is respectively set in each exhaust port 303. At the bottom of 3, during the filling process, splashed solid ammonium sulfite can be prevented from entering the tail gas hole 303 and being sucked into the tail gas treatment device. At the same time, when the filling amount is too large, the solid ammonium sulfite coming out of the discharge cylinder 301 will gradually push the slide cylinder 402 to rise on the inner wall of the discharge cylinder 301. During this process, it will squeeze the elastic strip 401, causing it to gradually shrink inward until it blocks the tail gas hole 303, thereby preventing the solid ammonium sulfite in the bag from being sucked into the exhaust gas treatment device when it buries the tail gas hole 303.

[0042] like Figure 4 and Figure 6 As shown, the elastic strip 401 is an inwardly concave arc shape, and the width of the elastic strip 401 is greater than the diameter of the exhaust port 303. By setting an inwardly concave arc elastic strip at the arc transition at the bottom of the exhaust outer cylinder 302 and a sliding cylinder 402 slidably connected to the inner wall of the discharge cylinder 301, the initial diameter of the bottom of the discharge cylinder 301 can be reduced, and the arc transition between the outer wall of the sliding cylinder 402 and the outer wall of the exhaust outer cylinder 302 can be extended by multiple sliding cylinders 402 to further improve the smoothness of the filling part inserting into the bag opening.

[0043] A method for filling solid ammonium sulfite using filling equipment includes the following steps:

[0044] Insert the discharge cylinder 301 and the exhaust gas outer cylinder 302 into the opening of the packaging bag, and seal the opening of the bag with the outer wall of the exhaust gas outer cylinder 302.

[0045] Start the exhaust gas treatment device and continuously draw air into the bag through the exhaust gas port 303 to keep the bag in a slightly negative pressure state.

[0046] Solid ammonium sulfite is filled into the bag through the discharge cylinder 301. During the filling process, negative pressure is used to simultaneously extract dust and expanding gas.

[0047] It also includes the following steps:

[0048] When the material inside the bag rises to the point of contacting and pushing the slide cylinder 402, the slide cylinder 402 slides upward relative to the discharge cylinder 301, causing the elastic strip 401 to contract inward and gradually block the exhaust hole 303 until filling is complete.

[0049] Working principle: By setting an inwardly recessed arc-shaped elastic strip at the arc transition at the bottom of the exhaust gas outer cylinder 302 and slidingly connecting it to the slide cylinder 402 on the inner wall of the discharge cylinder 301, the initial diameter of the bottom of the discharge cylinder 301 can be reduced. Furthermore, the arc transition between the outer wall of the slide cylinder 402 and the outer wall of the exhaust gas outer cylinder 302 is extended by multiple slide cylinders 402, further improving the smoothness of bag insertion at the filling point. Additionally, by setting each elastic strip 401 at the bottom of each exhaust gas hole 303, splashing solid sulfurous acid can be prevented during the filling process. Ammonium enters the tail gas port 303 and is thus drawn into the tail gas treatment device. At the same time, when the filling amount is too large, the solid ammonium sulfite coming out of the discharge cylinder 301 will gradually push the slide cylinder 402 to rise on the inner wall of the discharge cylinder 301. During this process, it will squeeze the elastic strip 401, causing it to gradually contract inward until it blocks the tail gas port 303. This prevents the solid ammonium sulfite in the bag from burying the tail gas port 303 and drawing it into the exhaust gas treatment device, effectively preventing the fine crystal dust of solid ammonium sulfite from clogging the air inlet and tail gas pipeline.

[0050] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. All equivalent changes and modifications made within the scope of the present invention should still fall within the scope of the present invention.

Claims

1. A filling device for solid ammonium sulfite, comprising a cylinder (1), a pre-discharge cylinder (202) slidably connected to the bottom of the cylinder (1), and a pre-discharge mechanism (2) provided at the bottom of the pre-discharge cylinder (202), characterized in that, The pre-discharge mechanism (2) is equipped with a filling mechanism (3) at the bottom; The filling mechanism (3) includes a discharge cylinder (301) located at the bottom of the pre-discharge mechanism (2). A tail gas extraction component is fixed on the outer wall of the discharge cylinder (301). A tail gas pipe (305) is provided on the tail gas extraction component. A tail gas treatment device is connected to the tail gas pipe (305).

2. The filling equipment for solid ammonium sulfite according to claim 1, characterized in that, The pre-discharge mechanism (2) includes two electric push cylinders (201) fixed to the outer wall of the cylinder (1). The output end of the two electric push cylinders (201) is fixedly connected to a transmission box (203). The transmission box (203) is fixedly connected to the bottom of the pre-discharge cylinder (202). A toothed plate (206) is rotatably connected inside the transmission box (203). A spiral feed cylinder (204) is fixedly connected to the bottom of the toothed plate (206). A motor (205) is fixedly connected to the outer wall of the transmission box (203). A gear is provided at the output end of the motor (205). The gear meshes with the toothed plate (206) inside the transmission box (203).

3. The filling equipment for solid ammonium sulfite according to claim 2, characterized in that, The discharge cylinder (301) is fixedly connected to the bottom of the transmission box (203), and the spiral discharge cylinder (204) is rotatably connected to the inside of the discharge cylinder (301).

4. The filling equipment for solid ammonium sulfite according to claim 3, characterized in that, The exhaust gas extraction component is an exhaust gas outer cylinder (302) fixedly connected to the outer wall of the discharge cylinder (301). The connection between the bottom of the exhaust gas outer cylinder (302) and the discharge cylinder (301) is rounded. Multiple exhaust gas holes (303) are opened at the rounded corners of the bottom of the exhaust gas outer cylinder (302). The multiple exhaust gas holes (303) are arranged in a circular array with the discharge cylinder (301) as the center.

5. The filling equipment for solid ammonium sulfite according to claim 4, characterized in that, A limit cover (304) is fixedly connected at the connection between the exhaust gas outer cylinder (302) and the discharge cylinder (301) to limit the depth of the exhaust gas outer cylinder (302) inserted into the bag.

6. The filling equipment for solid ammonium sulfite according to claim 4 or 5, characterized in that, The bottom of the discharge cylinder (301) is equipped with a protective mechanism (4) to prevent solid ammonium sulfite from splashing into the tail gas hole (303).

7. The filling equipment for solid ammonium sulfite according to claim 6, characterized in that, The protective mechanism (4) includes multiple elastic strips (401) fixedly connected to the bottom arc of the exhaust gas outer cylinder (302). The multiple elastic strips (401) are distributed at the bottom of the exhaust gas hole (303), and there is a gap between the exhaust gas hole (303) and the elastic strips (401). The bottom of the multiple elastic strips (401) is fixedly connected to a sliding cylinder (402), and the sliding cylinder (402) is slidably connected to the inner wall of the discharge cylinder (301).

8. The filling equipment for solid ammonium sulfite according to claim 7, characterized in that, The elastic strip (401) is an inwardly concave arc shape, and the width of the elastic strip (401) is greater than the diameter of the exhaust port (303).

9. A method for filling solid ammonium sulfite using the filling equipment according to any one of claims 1 to 8, characterized in that, Includes the following steps: Insert the discharge cylinder (301) and the exhaust gas outer cylinder (302) into the opening of the packaging bag, and seal the opening of the bag against the outer wall of the exhaust gas outer cylinder (302); Start the exhaust gas treatment device and continuously draw air into the bag through the exhaust gas port (303) to make the bag in a slightly negative pressure state. Solid ammonium sulfite is filled into the bag through the discharge cylinder (301), and dust and expanding gas are extracted simultaneously by negative pressure during the filling process.

10. The filling method according to claim 9, characterized in that, It also includes the following steps: When the material inside the bag rises to the point of contacting and pushing the slide cylinder (402), the slide cylinder (402) slides upward relative to the discharge cylinder (301), causing the elastic strip (401) to contract inward and gradually block the tail gas hole (303) until filling is completed.

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