Device for unloading ton bags of powder
By using the bag-clamping and sealing design of the unloading device and the exhaust fan design, the problems of poor sealing and air accumulation during the powder bagging process are solved, achieving environmentally friendly and efficient operation of powder bagging.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENGAN LONGMA PHOSPHORUS IND CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-07-03
AI Technical Summary
In the current powder bagging process, loose ties cause powder to spill out, resulting in environmental pollution and waste. At the same time, manual operation is time-consuming and labor-intensive, and the air inside the receiving bag cannot be expelled in time, affecting bagging efficiency.
The unloading device includes an unloading pipe, a suction pipe, a bag clamping device, and an exhaust fan. The bag clamping device achieves sealing, and the exhaust fan removes air from the receiving bag, preventing powder from overflowing and making bagging difficult.
It achieves airtightness during the powder bagging process, reduces dust pollution and waste, improves bagging efficiency, and simplifies the operation process.
Smart Images

Figure CN224449612U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of powder production, and in particular to a powder ton bag unloading device. Background Technology
[0002] The current method of bagging powder materials uses cloth bags, with the top material bag tied to the unloading pipe with cable ties, and the bottom receiving bag also secured to the bottom of the unloading pipe with cable ties. However, this method of tying the ends of the material bags with cable ties easily leads to incomplete seals. This directly causes a large amount of powder to spill out with the air during the bagging process. The spilled powder not only pollutes the work site environment, causing dust to permeate the area, but also wastes powder and increases material costs. At the same time, the manual tying of the cable ties is time-consuming and labor-intensive, requiring significant effort from workers and affecting the overall smoothness of the operation.
[0003] After the receiving bag is fixed to the bottom of the unloading pipe, when powder is filled into the receiving bag, the air inside cannot be expelled in time because the receiving bag is in a relatively closed state. As powder is continuously filled, the receiving bag will inflate and expand due to the accumulation of internal air, thus obstructing the filling of powder and causing difficulties in filling. This situation will significantly prolong the bagging time of a single bag of powder, reduce bagging efficiency, and adversely affect the overall production progress. Therefore, we propose a powder ton bag unloading device to solve the above problems. Utility Model Content
[0004] This utility model provides a powder ton bag unloading device, which solves the problems of powder bagging and unloading pipe binding with cable ties, which easily leads to poor sealing, large amount of powder overflowing with air, causing dust to spread on site and waste of powder. Manually binding the cable ties is time-consuming and laborious. At the same time, when the receiving bag is filled with powder, the receiving bag is in a relatively closed state, and the internal air cannot be discharged in time, which reduces the bagging efficiency.
[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a powder ton bag unloading device, including a support, a unloading pipe on the support, a hollow suction pipe outside the unloading pipe, an air outlet pipe connected to one side of the suction pipe, a bag clamping device at one end of the unloading pipe, a second bag clamping device at one end of the suction pipe, and both ends of the unloading pipe extending out of the end of the suction pipe.
[0006] In the preferred embodiment, both the unloading pipe and the suction pipe are connected to the support frame.
[0007] In the preferred embodiment, the unloading pipe is provided with an inlet and an outlet at both ends, both of which extend beyond the end of the suction pipe. One end of the outlet pipe is connected to the suction pipe, and the other end of the outlet pipe is provided with an air outlet, which is connected to the induced draft fan.
[0008] In a preferred embodiment, the bag clamping device includes a support plate, an inner ring, and a lifting ring. Cylinders are provided on both sides of the support plate, and one end of each cylinder is connected to the lifting ring. The inner diameter of the lifting ring is larger than the outer diameter of the unloading pipe.
[0009] In the preferred embodiment, the bottom of the lifting ring is provided with a ring groove, and the support plate and inner ring are installed on the unloading pipe;
[0010] When the lifting ring is lowered to its lowest position, the inner ring rests against the ring groove.
[0011] In the preferred embodiment, a rotary unloader is provided on the unloading pipe.
[0012] In the preferred embodiment, the structure of the second bag clamping device is the same as that of the bag clamping device, and the support plate and inner ring of the second bag clamping device are installed on the suction pipe.
[0013] In the preferred embodiment, a material bag is provided at the top of the support, and a drawstring is tied to the opening of the material bag.
[0014] In the preferred embodiment, a receiving bag is provided at the bottom of the unloading pipe, and a second tie is attached to the opening of the receiving bag.
[0015] The beneficial effects of this utility model are as follows: When the material bag needs to be unloaded, the material bag is hoisted to the top of the support by a crane. The cylinder of the bag clamping device is driven to extend the lifting ring. The port of the material bag is manually passed through the inner wall of the lifting ring so that the port of the material bag wraps around the inner ring. The cylinder is then driven to retract the lifting ring, so that the lifting ring and the inner ring press against the port of the material bag, thus sealing the material bag and the unloading pipe. The rope is then manually untied to allow the powder inside the material bag to enter the unloading pipe. In the same way, the second bag clamping device clamps the port of the receiving bag, thus sealing the receiving bag with the suction pipe.
[0016] The rotating unloader is driven to load the receiving bag with material. The bag clamping device and the second bag clamping device achieve a seal of the overall structure, preventing a large amount of powder from overflowing with the air during the bagging process. The overflowing powder will not only pollute the work site environment and cause dust to spread, but also lead to the waste of powder.
[0017] When the receiving bag is being filled, the powder fills the receiving bag. If the air inside the receiving bag cannot be discharged in time, the induced draft fan is driven so that the air in the receiving bag enters the exhaust pipe from the bottom of the suction pipe and is then transported into the subsequent dust removal device by the induced draft fan. This prevents the receiving bag from inflating and expanding due to the accumulation of air inside, which would hinder the filling of the powder and cause difficulties in filling. This method has great potential for widespread application. Attached Figure Description
[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;
[0019] Figure 1 This is a front view of the overall structure of this utility model;
[0020] Figure 2 This is a front view of a partial structure of this utility model;
[0021] Figure 3 This is a sectional view of a partial structure of this utility model;
[0022] Figure 4 This is an axonometric view of the bag clamping device and rotary unloader of this utility model;
[0023] Figure 5 This is an axonometric view of the bag clamping device and rotary unloader of this utility model from another perspective;
[0024] Figure 6 This is a utility model Figure 5 A magnified view of a portion of the view;
[0025] In the diagram: 1. Support frame; 2. Unloading pipe; 201. Inlet; 202. Suction pipe; 3. Outlet pipe; 4. Outlet; 401. Bag clamping device; 5. Support plate; 501. Cylinder; 502. Lifting ring; 503. Ring groove; 5031. Inner ring; 504. Rotary unloader; 6. Second bag clamping device; 7. Material bag; 8. Tie rope; 9. Exhaust fan; 10. Detailed Implementation
[0026] Example 1:
[0027] like Figure 1-6 The unloading device for powder ton bags includes a support 1, a unloading pipe 2 mounted on the support 1, a hollow suction pipe 3 sleeved on the outside of the unloading pipe 2, an exhaust pipe 4 connected to one side of the suction pipe 3, a bag clamping device 5 at one end of the unloading pipe 2, and a second bag clamping device 7 at one end of the suction pipe 3. Both ends of the unloading pipe 2 extend beyond the ends of the suction pipe 3. With this structure, when the material bag 8 needs to be unloaded, a crane hoists the material bag 8 to the top of the support 1, drives the cylinder 502 of the bag clamping device 5 to extend the lifting ring 503, manually inserts the end of the material bag 8 through the inner wall of the lifting ring 503 so that the end of the material bag 8 wraps around the inner ring 504, drives the cylinder 502 to retract the lifting ring 503, so that the lifting ring 503 and the inner ring 504 press against the end of the material bag 8, sealing the material bag 8 and the unloading pipe 2. The tethering rope 9 is then manually untied to allow the powder inside the material bag 8 to enter the unloading pipe 2. In the same way, the second bag clamping device 7 clamps the port of the receiving bag so that the receiving bag is sealed to the suction pipe 3.
[0028] The rotating unloader 6 is driven to load the receiving bag with material. The bag clamping device 5 and the second bag clamping device 7 achieve the sealing of the entire structure, preventing a large amount of powder from overflowing with the air during the bagging process. The overflowing powder will not only pollute the work site environment and cause dust to spread, but also lead to the waste of powder.
[0029] When the receiving bag is being filled, the powder fills the receiving bag. If the air inside the receiving bag cannot be discharged in time, the induced draft fan 10 is driven so that the air in the receiving bag enters the exhaust pipe 4 from the bottom of the suction pipe 3 and is then transported into the subsequent dust removal device by the induced draft fan 10. This prevents the receiving bag from expanding due to the accumulation of air inside, which would hinder the filling of the powder and cause difficulties in filling.
[0030] In the preferred embodiment, both the unloading pipe 2 and the suction pipe 3 are connected to the support 1. With this structure, a ladder is provided on one side of the support 1, allowing workers to reach the vicinity of the bag clamping device 5 and loosen the ties 9 on the material bag 8.
[0031] In the preferred embodiment, the unloading pipe 2 is provided with an inlet 201 and an outlet 202 at both ends, both of which extend beyond the end of the suction pipe 3. One end of the outlet pipe 4 is connected to the suction pipe 3, and the other end of the outlet pipe 4 is provided with an outlet 401, which is connected to the induced draft fan 10. With this structure, when the receiving bag is being loaded, the powder fills the receiving bag. When the air inside the receiving bag cannot be discharged in time, the induced draft fan 10 is driven so that the air in the receiving bag enters the outlet pipe 4 from the bottom of the suction pipe 3 and is conveyed into the subsequent dust removal device by the induced draft fan 10. This prevents the receiving bag from expanding due to the accumulation of air inside, which would hinder the loading of powder and cause difficulties in loading.
[0032] In a preferred embodiment, the bag clamping device 5 includes a support plate 501, an inner ring 504, and a lifting ring 503. Cylinders 502 are located on both sides of the support plate 501, with one end of each cylinder 502 connected to the lifting ring 503. The inner diameter of the lifting ring 503 is larger than the outer diameter of the unloading pipe 2. With this structure, driving the cylinders 502 of the bag clamping device 5 extends the lifting ring 503. The port of the material bag 8 is manually passed through the inner wall of the lifting ring 503, so that the port of the material bag 8 wraps around the inner ring 504. Driving the cylinders 502 then retracts the lifting ring 503, causing the lifting ring 503 and the inner ring 504 to press against the port of the material bag 8, thus sealing the material bag 8 and the unloading pipe 2. The tether 9 is then manually untied, allowing the powder inside the material bag 8 to enter the unloading pipe 2.
[0033] In the preferred embodiment, the bottom of the lifting ring 503 is provided with a ring groove 5031, and the support plate 501 and the inner ring 504 are installed on the unloading pipe 2;
[0034] When the lifting ring 503 is lowered to its lowest position, the inner ring 504 abuts against the ring groove 5031. With this structure, the port of the material bag 8 is wrapped around the inner ring 504. When the driving cylinder 502 is used to retract the lifting ring 503, the lifting ring 503 and the inner ring 504 press against the port of the material bag 8, achieving a seal between the bag clamping device 5 and the material bag 8.
[0035] In a preferred embodiment, a rotary unloader 6 is provided on the unloading pipe 2. With this structure, the rotary unloader 6 includes a rotary motor and a discharge valve core. The rotary motor is driven to rotate the discharge valve core, allowing the powder at the top of the unloading pipe 2 to enter the bottom.
[0036] In the preferred embodiment, the second bag clamping device 7 has the same structure as the bag clamping device 5, and the support plate and inner ring of the second bag clamping device 7 are mounted on the suction pipe 3. With this structure, the second bag clamping device 7 clamps the port of the receiving bag, thereby sealing the receiving bag with the suction pipe 3.
[0037] In the preferred embodiment, a material bag 8 is provided at the top of the support 1, and a tie 9 is attached to the opening of the material bag 8. With this structure, after the material bag 8 is sealed with the bag clamping device 5, the tie 9 can be manually untied to allow the powder to enter the discharge pipe 2.
[0038] In the preferred embodiment, a receiving bag is provided at the bottom of the unloading pipe 2, and a second tie is attached to the opening of the receiving bag. With this structure, after the receiving bag and the second bag clamping device 7 are sealed, the second tie can be manually untied, and the powder enters the receiving bag.
[0039] The above embodiments are merely preferred technical solutions of this utility model and should not be considered as limitations on this utility model. The protection scope of this utility model should be the technical solution described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the protection scope of this utility model.
Claims
1. A device for discharging a ton bag of powder material, characterised in that: Includes a support (1), a discharge pipe (2) is provided on the support (1), a hollow suction pipe (3) is fitted on the outside of the discharge pipe (2), an air outlet pipe (4) is provided on one side of the suction pipe (3), a bag clamping device (5) is provided at one end of the discharge pipe (2), a second bag clamping device (7) is provided at one end of the suction pipe (3), and both ends of the discharge pipe (2) extend out of the end of the suction pipe (3).
2. The apparatus for discharging a ton bag of powder material according to claim 1, wherein: The unloading pipe (2) and the suction pipe (3) are both connected to the bracket (1).
3. The apparatus for discharging a ton bag of powder material according to claim 1, wherein: The unloading pipe (2) has an inlet (201) and an outlet (202) at both ends. Both the inlet (201) and the outlet (202) extend out of the end of the suction pipe (3). One end of the outlet pipe (4) is connected to the suction pipe (3), and the other end of the outlet pipe (4) is provided with an outlet (401). The outlet (401) is connected to the blower (10).
4. The apparatus for discharging a ton bag of powder material according to claim 1, wherein: The bag clamping device (5) includes a support plate (501), an inner ring (504) and a lifting ring (503). The support plate (501) is equipped with cylinders (502) on both sides. One end of the cylinder (502) is connected to the lifting ring (503). The inner diameter of the lifting ring (503) is larger than the outer diameter of the unloading pipe (2).
5. The apparatus for discharging a ton bag of powder material according to claim 4, characterized in that: The bottom of the lifting ring (503) is provided with a ring groove (5031), and the support plate (501) and the inner ring (504) are installed on the unloading pipe (2); When the lifting ring (503) is lowered to its lowest position, the inner ring (504) abuts against the ring groove (5031).
6. The apparatus for discharging a ton bag of powder material according to claim 1, wherein: A rotary unloader (6) is provided on the unloading pipe (2).
7. The powder ton bag unloading device according to claim 1, characterized in that: The structure of the second bag clamping device (7) is the same as that of the bag clamping device (5). The support plate and inner ring of the second bag clamping device (7) are installed on the suction pipe (3).
8. The apparatus for discharging a ton bag of powder material according to claim 1, wherein: The top of the support (1) is equipped with a material bag (8), and the opening of the material bag (8) is tied with a rope (9).
9. The apparatus for discharging a ton bag of powder material according to claim 1, wherein: The bottom of the unloading pipe (2) is equipped with a receiving bag, and a second tie is attached to the opening of the receiving bag.