Packaging scale with clean area
By introducing a buffer hopper, spiral conveyor blades, and clamping components into the packaging scale, the problem of low production efficiency caused by the small volume of the storage hopper was solved, achieving continuous production and cleanliness of the equipment, and improving the production efficiency of the salt powder washing workshop.
Patent Information
- Application Number
- CN202520536690.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-25
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-03-25
AI Technical Summary
In the salt powder washing workshop, the small capacity of the storage hopper of the packaging scale causes a decrease in production efficiency when the sewing machine breaks a thread, making it impossible to guarantee the continuity of production.
A packaging scale with a clean area was designed, comprising a buffer hopper, a spiral conveyor blade, a weighing hopper, and a clamping assembly. The buffer hopper stores materials, the spiral conveyor blade controls the material flow, and the clamping assembly secures the woven bags, ensuring that the materials are conveyed within a predetermined weight range and are cleaned within the clean area.
It achieves continuous production in the salt powder washing workshop, prevents excessive material weight, improves production efficiency, and ensures the cleanliness of the equipment through the clean area.
Smart Images
Figure CN223822070U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of salt packaging, and in particular to a packaging scale with a clean area. Background Technology
[0002] Packaging scales are devices used for automatic weighing and packaging of materials, widely used in industries such as food, chemicals, and agriculture. In the salt production process, packaging scales in the salt washing workshop weigh the washed salt, while sewing machines sew the woven bags. Inside the salt washing workshop, a hopper elevator transports the salt to storage hoppers.
[0003] The storage hopper inside the packaging scale has a small volume. If the sewing machine breaks a thread, it will cause the salting process at the front end to stop, resulting in a decrease in production efficiency. Utility Model Content
[0004] This utility model provides a packaging scale with a clean area, which has the technical effect of ensuring production continuity and improving production efficiency.
[0005] A packaging scale with a clean area adopts the following technical solution:
[0006] A packaging scale with a clean area includes a bottom mounting plate, casters mounted below the bottom mounting plate, a housing above the bottom mounting plate, support legs fixed between the bottom mounting plate and the housing, a storage hopper inside the housing, a first connecting ring plate fixed to the top of the storage hopper extending out of the housing, a buffer hopper above the storage hopper, a second connecting ring plate detachably connected to the first connecting ring plate fixed to the bottom side wall of the housing, and a weighing hopper below the storage hopper, the top of the weighing hopper located inside the housing and the bottom of the weighing hopper located below the housing.
[0007] Preferably, the bottom of the storage hopper is provided with a first valve plate that can open and close the storage hopper, a horizontally arranged conveying pipe is fixed on the bottom side wall of the storage hopper, a spiral conveying blade is provided inside the conveying pipe, a motor that drives the conveying blade to rotate is fixed at one end of the conveying pipe, and a vertically arranged discharge pipe that can drop materials into the weighing hopper is fixed at the other end of the conveying pipe away from the motor.
[0008] Preferably, the side wall of the storage hopper is provided with a plug hole, the first valve plate passes through the plug hole and is inserted into the inside of the storage hopper, and a first cylinder that drives the first valve plate to move is fixed on the inner wall of the box.
[0009] Preferably, a second valve plate is provided at the bottom of the weighing hopper, and a second cylinder is fixed on the side wall of the weighing hopper to drive the second valve plate to open and close.
[0010] Preferably, a hopper is fixed to the bottom of the box, a connecting pipe is fixed to the bottom of the hopper, the bottom of the weighing hopper is directly opposite the top of the hopper, a woven bag is fitted onto the connecting pipe, and a clamping component is provided on the connecting pipe to clamp and fix the woven bag.
[0011] Preferably, the clamping assembly includes a third cylinder and two clamping ring plates. Two clamping ring plates wrap around the outer wall of the connecting pipe. Clamping blocks are fixed to both ends of each clamping ring plate. A second connecting plate, arranged in a U-shape, is fixed between the two clamping blocks of the same clamping ring plate. A connecting block is fixed above the second connecting plate, and the top of the connecting block is hinged to the side wall of the hopper. The piston rod of the third cylinder is hinged to the side wall of the connecting block, and the end of the third cylinder is hinged to the side wall of the hopper.
[0012] Preferably, a conveyor belt for conveying woven bags is provided below the hopper, and a second support plate is provided on both sides of the conveyor belt. The conveyor belt is installed between the two second support plates, and the second support plates are installed on the bottom mounting plate. Two vertical plates are fixed on each bottom mounting plate, and an adjustable horizontal plate is installed on the vertical plate to prevent the woven bags from falling to the outside of the conveyor belt.
[0013] Preferably, a first waist-shaped groove is provided on the vertical plate, and a locking bolt is fixed on the horizontal plate. The locking bolt passes through the first waist-shaped groove and is threadedly connected to a locking nut.
[0014] Preferably, a second waist-shaped groove is provided on the vertical plate, and a connecting rod is fixed on the horizontal plate. The connecting rod passes through the second waist-shaped hole, and a fixing block is slidably connected to the connecting rod. The connecting rod passes through the fixing block, and a plug-in rod is fixed on the side of the fixing block near the vertical plate. A spring is fixed between the fixing block and the vertical plate, and the spring is sleeved on the plug-in rod. Multiple positioning holes are provided on the vertical plate, and the multiple positioning holes are set along the height direction of the vertical plate. Under the action of the spring, the plug-in rod is inserted into one of the positioning holes. The positioning hole passes through the vertical plate, and after the plug-in rod passes through the positioning hole, it is located below the horizontal plate and contacts the horizontal plate.
[0015] Preferably, a cleaning chamber is provided on one side of the bottom mounting plate. The cleaning chamber is equipped with an air shower, a hand sanitizing room, and a changing room. A protective shell is fixed on one side of the cleaning chamber, which covers the packaging scale inside. A buffer hopper extends from the top of the protective shell.
[0016] Compared with the prior art, the present invention has the following technical effects:
[0017] By incorporating a buffer hopper, more material can be stored, ensuring production continuity. Bolted conveyor blades transport the material, preventing excessive material from being released into the storage hopper when the woven bags are nearly full, thus exceeding the predetermined weight. A baffle assembly prevents the woven bags from falling off the conveyor belt; the level plate within the baffle assembly is height-adjustable, allowing for adjustments based on product height. Attached Figure Description
[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of it, do not constitute a limitation thereof. In the drawings:
[0019] Figure 1 This is a schematic diagram illustrating the overall structure of Embodiment 1 of the present invention;
[0020] Figure 2 This is a schematic diagram illustrating the buffer silo, storage hopper, and weighing hopper in Embodiment 1 of this utility model;
[0021] Figure 3 This is a schematic diagram illustrating the conveying pipe and spiral conveying blades in Embodiment 1 of this utility model;
[0022] Figure 4 This is a schematic diagram illustrating the second valve plate and the second cylinder in Embodiment 1 of this utility model;
[0023] Figure 5 This is a schematic diagram illustrating the feeding hopper and clamping assembly in Embodiment 1 of this utility model;
[0024] Figure 6 This is a schematic diagram illustrating the conveyor belt and baffle assembly in Embodiment 1 of this utility model;
[0025] Figure 7 This is a schematic diagram illustrating the cleaning box and protective shell in Embodiment 1 of this utility model;
[0026] Figure 8 This is a schematic diagram illustrating the baffle assembly in Embodiment 2 of this utility model;
[0027] Figure 9 This is a schematic diagram illustrating the connection between the vertical plate and the horizontal plate in Embodiment 2 of this utility model.
[0028] Explanation of reference numerals in the attached drawings: 1. Bottom mounting plate; 11. Casters; 12. Housing; 121. Support block; 13. Support leg; 14. Buffer hopper; 15. Second connecting ring plate; 2. Storage hopper; 21. First connecting ring plate; 22. First valve plate; 23. Insertion hole; 24. First cylinder; 25. Conveying pipe; 251. Screw conveyor blades; 252. Motor; 253. Discharge pipe; 3. Weighing hopper; 31. Second valve plate; 32. Second cylinder; 33. First mounting block; 34. First connecting plate; 35. First support plate; 36. Weighing 4. Sensor; 5. Hopper; 6. Connecting pipe; 7. Clamping assembly; 8. Third cylinder; 9. Clamping ring plate; 10. Clamping block; 11. Second connecting plate; 2. Connecting block; 3. Conveyor belt; 42. Second support plate; 53. Support leg; 6. Baffle assembly; 74. Vertical plate; 75. First waist-shaped groove; 76. Second waist-shaped groove; 77. Positioning hole; 8. Horizontal plate; 9. Locking bolt; 10. Locking nut; 11. Connecting rod; 12. Fixing block; 13. Insertion rod; 14. Spring; 15. Cleaning box; 16. Protective shell. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and descriptions of this utility model are used to explain the present utility model, but are not intended to limit the present utility model.
[0030] Embodiment 1 of this application
[0031] Reference Figures 1-6 A packaging scale with a clean area includes a bottom mounting plate 1, with casters 11 mounted on each of the four corners of the bottom mounting plate 1. A housing 12 is mounted on top of the bottom mounting plate 1. Support legs 13 are fixed between the bottom of the housing 12 and the bottom mounting plate. A storage hopper 2 is provided in the housing 12, and the storage hopper 2 is fixed to the top wall of the housing 12. The top of the storage hopper 2 extends out of the top wall of the housing 12. A buffer hopper 14 is provided above the storage hopper 2. The buffer hopper 14 is detachably connected to the storage hopper 2.
[0032] A first connecting ring plate 21 is fixed to the top of the storage hopper 2. The first connecting ring plate 21 is located above the upper surface of the housing 12 and is fixed to the upper surface of the housing 12. A second connecting ring plate 15 is fixed to the bottom outer wall of the buffer hopper 14. The second connecting ring plate 15 is fixed to the first connecting ring plate 21 by bolts. A weighing hopper 3 is provided below the storage hopper 2.
[0033] Reference Figure 2 and Figure 3The bottom of the storage hopper 2 is provided with a first valve plate 22, and the bottom side wall of the storage hopper 2 is provided with an insertion hole 23. The first valve plate 22 is inserted into the storage hopper 2 through the insertion hole 23. The inner wall of the box 12 is fixed with a first cylinder 24. The piston rod of the first cylinder 24 is fixed with the first valve plate 22. The first cylinder 24 can push the first valve plate 22 to close the bottom opening of the storage hopper 2.
[0034] A horizontally arranged conveying pipe 25 is fixed to the side wall of the storage hopper 2. The conveying pipe 25 is fixed to the side wall away from the insertion hole 23 and communicates with the interior of the storage hopper 2. A spiral conveying blade 251 is installed inside the conveying pipe 25. A motor 252 that drives the spiral conveying blade 251 to rotate is fixed to one end of the conveying pipe 25. A discharge pipe 253 is fixed to the end of the conveying pipe 25 away from the motor 252. The discharge pipe 253 is located at the bottom of the conveying pipe 25 and is arranged vertically. After the motor 252 is started, the motor 252 drives the spiral conveying blade 251 to rotate. The spiral conveying blade 251 conveys the material in the conveying pipe 25 and the storage hopper 2 to the discharge pipe 253. The material falls from the discharge pipe 253 into the weighing hopper 3.
[0035] If a woven bag contains 50kg of material, 40kg of material is first released through the bottom opening of the storage hopper 2. Once the material in the weighing hopper 3 reaches 40kg, the first valve plate 22 is closed, and then the motor 252 is turned on. The motor 252 drives the screw conveyor blades 251 to transport the remaining 10kg of material into the weighing hopper 3. The conveying pipe 25 and the screw conveyor blades 251 prevent the storage hopper 2 from releasing too much material when the woven bag is almost full, thus exceeding the predetermined weight.
[0036] The top of the weighing hopper 3 is located inside the box 12, and the bottom of the weighing hopper 3 extends out of the box 12 and is located below the box 12. Two first support plates 35 are fixed on the side wall of the weighing hopper 3. The two first support plates 35 are symmetrically arranged about the axis of the weighing hopper 3. The first support plates 35 are located inside the box 12. A support block 121 is fixed on the inner bottom wall of the box 12. A weighing sensor 36 is fixed between the support block 121 and the first support plate 35.
[0037] Reference Figure 4The weighing hopper 3 has two second valve plates 31 at its bottom, which are symmetrically arranged about the center line of the weighing hopper 3. A second cylinder 32 is fixed on the side wall of the weighing hopper 3 to drive the second valve plates 31 to open and close. A first mounting block 33 is fixed on the side of each of the two second valve plates 31 that is away from each other. A first connecting plate 34 is fixed on the outer wall of the weighing hopper 3. The end of the first connecting plate 34 away from the weighing hopper 3 is hinged to the middle of the first mounting block 33. The side of the first mounting block 33 away from the second valve plates 31 is hinged to the piston rod of the second cylinder 32. The end of the second cylinder 32 is hinged to the side wall of the weighing hopper 3.
[0038] Reference Figure 2 and Figure 5 A hopper 4 is fixed to the bottom of the housing 12. The top opening of the hopper 4 is opposite to the bottom opening of the weighing hopper 3. A connecting pipe 41 is fixed to the bottom of the hopper 4. A woven bag is fitted onto the connecting pipe 41. A clamping assembly 5 is fixed to the outer wall of the hopper 4 to clamp the woven bag. The clamping assembly 5 can clamp the woven bag onto the connecting pipe 41.
[0039] The clamping assembly 5 includes a third cylinder 51 and two clamping ring plates 52. The two clamping ring plates 52 enclose the outer wall of the connecting pipe 41. Clamping blocks 53 are fixed to both ends of each clamping ring plate 52. A second connecting plate 54, arranged in a U-shape, is fixed between the two clamping blocks 53 of the same clamping ring plate 52. A connecting block 55 is fixed above the second connecting plate 54, and the top of the connecting block 55 is hinged to the side wall of the hopper 4. The piston rod of the third cylinder 51 is hinged to the side wall of the connecting block 55, and the end of the third cylinder 51 is hinged to the side wall of the hopper 4. After the piston rod of the third cylinder 51 extends, the clamping ring plates 52 can clamp the woven bag, fixing it between the clamping ring plates 52 and the outer wall of the connecting pipe 41.
[0040] Reference Figure 6 A conveyor belt 6 is mounted on the bottom mounting plate 1. Second support plates 61 are mounted on both sides of the conveyor belt 6, with the conveyor belt 6 positioned between the two second support plates 61. Support legs 62 are fixed to the bottom of each second support plate 61, supporting the conveyor belt 6 on the bottom mounting plate 1. The conveyor belt 6 is located below the hopper 4 and conveys the woven bags. A baffle assembly 7 is mounted on the second support plate 61 to prevent the woven bags from falling off the conveyor belt 6 as it moves along the conveyor belt 6.
[0041] The baffle assembly 7 includes vertical plates 71 and horizontal plates 72. Two vertical plates 71, arranged horizontally, are fixed to each second support plate 61. Two horizontal plates 72, arranged vertically, are installed on the two vertical plates 71. A first waist-shaped groove 711 is formed on the vertical plate 71. A locking bolt 73 is fixed to the horizontal plate 72, passing through the waist-shaped groove and threaded with a locking nut 74. The height of the horizontal plate 72 can be adjusted through the first waist-shaped groove 711, allowing the baffle assembly 7 to limit the height of plastic woven bags at different heights. A sewing machine (not shown in the figure) is installed on one side of the conveyor belt 6. After the woven bags are filled, they move forward with the conveyor belt 6. When they reach the sewing machine, the sewing machine sews the woven bags. The conveyor belt 6 then continues forward. When it reaches the end of the conveyor belt 6, the workers transport and stack the sewn woven bags onto a pallet.
[0042] Reference Figure 7 Since salt production must be carried out in a clean area, a cleaning box 8 is installed on one side of the packaging scale in the salt powder washing workshop. The cleaning box 8 is equipped with an air shower, a hand washing and disinfection room and a changing room. A protective shell 9 is fixed on one side of the cleaning box 8, which covers the packaging scale inside. The buffer hopper 14 extends from the top of the protective shell 9.
[0043] The implementation principle of this utility model of a packaging scale with a clean area is as follows: When weighing and sewing materials, the materials are first conveyed to the buffer hopper 14 and the storage hopper 2. Then, the first valve plate 22 is opened, and the materials in the discharge hopper fall into the weighing hopper 3. When the weighing hopper 3 is about to reach the specified weight, the first valve plate 22 is closed, and the spiral conveyor blades convey the remaining materials into the weighing hopper 3. Then, the woven bag is put on the connecting pipe 41 and clamped and fixed by the clamping assembly 5. The second valve plate 31 is opened, and the materials in the weighing hopper 3 fall into the woven bag. Then, the woven bag moves with the conveyor belt 6. When it reaches the sewing machine, the woven bag is sewn.
[0044] Embodiment 2 of this application
[0045] Reference Figure 8 and Figure 9The difference from Embodiment 1 is that a second waist-shaped groove 712 is formed on the vertical plate 71, and a connecting rod 75 is fixed on the horizontal plate 72. The connecting rod 75 passes through the second waist-shaped groove 712 and can move up and down along the second waist-shaped groove 712. A fixing block 76 is slidably connected to the connecting rod 75, and the connecting rod 75 passes through the fixing block 76, which can slide along the connecting rod 75. Two insertion rods 77 are fixed on the side of the fixing block 76 near the vertical plate 71, and the two insertion rods 77 are respectively located on both sides of the second waist-shaped groove 712. A spring 78 is fixed between the fixing block 76 and the horizontal plate 72, and the spring 78 is sleeved with the connecting rod 75. Multiple positioning holes 713 are formed on the vertical plate 71, and the multiple positioning holes are evenly arranged along the height direction of the vertical plate 71. Under the action of the spring 78, the insertion rod 77 is inserted into the positioning hole 713, and the positioning hole 713 penetrates the vertical plate 71.
[0046] The height of the plug rod 77 is lower than the height of the horizontal plate 72. The plug rod 77 passes through the positioning hole 713 and is located below the horizontal plate 72. The bottom of the horizontal plate 72 contacts the plug rod 77. The plug rod 77 can support the horizontal plate 72, making the horizontal plate 72 more stable.
[0047] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.
Claims
1. A packaging scale with a clean area, characterized in that, Includes a bottom mounting plate (1), with casters (11) installed below the bottom mounting plate (1), a box (12) set above the bottom mounting plate (1), and a support leg (13) fixed between the bottom mounting plate (1) and the box (12). A storage hopper (2) is set inside the box (12), with the top of the storage hopper (2) extending out of the box (12) and fixed with a first connecting ring plate (21). The first connecting ring plate (21) is fixed to the top wall of the box (12). A buffer hopper (14) is set above the storage hopper (2), and a second connecting ring plate (15) is fixed on the bottom side wall of the buffer hopper (14) and detachably connected to the first connecting ring plate (21). A weighing hopper (3) is set below the storage hopper (2), with the top of the weighing hopper (3) located inside the box (12) and the bottom of the weighing hopper (3) located below the box (12).
2. The packaging scale with a clean area according to claim 1, characterized in that, The bottom of the storage hopper (2) is provided with a first valve plate (22) that can open and close the storage hopper (2). A horizontally arranged conveying pipe (25) is fixed on the bottom side wall of the storage hopper (2). A spiral conveying blade (251) is provided inside the conveying pipe (25). A motor (252) that drives the conveying blade to rotate is fixed at one end of the conveying pipe (25). A vertically arranged discharge pipe (253) that can drop materials into the weighing hopper (3) is fixed at the other end of the conveying pipe (25) away from the motor (252).
3. The packaging scale with a clean area according to claim 2, characterized in that, The storage hopper (2) has a plug hole (23) on its side wall. The first valve plate (22) passes through the plug hole (23) and is inserted into the storage hopper (2). The inner wall of the box (12) is fixed with a first cylinder (24) that drives the first valve plate (22) to move.
4. The packaging scale with a clean area according to claim 2, characterized in that, The bottom of the weighing hopper (3) is provided with a second valve plate (31), and a second cylinder (32) is fixed on the side wall of the weighing hopper (3) to drive the second valve plate (31) to open and close.
5. The packaging scale with a clean area according to claim 1, characterized in that, The bottom of the box (12) is fixed with a feeding hopper (4), and the bottom of the feeding hopper (4) is fixed with a connecting pipe (41). The bottom of the weighing hopper (3) is directly opposite the top of the feeding hopper (4). A woven bag is fitted on the connecting pipe (41), and a clamping component (5) is provided on the connecting pipe (41) to clamp and fix the woven bag.
6. The packaging scale with a clean area according to claim 5, characterized in that, The clamping assembly (5) includes a third cylinder (51) and a clamping ring plate (52). The two clamping ring plates (52) wrap around the outer wall of the connecting pipe (41). Both ends of the clamping ring plate (52) are fixed with clamping blocks (53). A second connecting plate (54) in a U-shape is fixed between the two clamping blocks (53) of the same clamping ring plate (52). A connecting block (55) is fixed above the second connecting plate (54). The top of the connecting block (55) is hinged to the side wall of the hopper (4). The piston rod of the third cylinder (51) is hinged to the side wall of the connecting block (55). The end of the third cylinder (51) is hinged to the side wall of the hopper (4).
7. The packaging scale with a clean area according to claim 5, characterized in that, Below the hopper (4) is a conveyor belt (6) for conveying woven bags. On both sides of the conveyor belt (6) are second support plates (61). The conveyor belt (6) is installed between the two second support plates (61). The second support plates (61) are installed on the bottom mounting plate (1). Each bottom mounting plate (1) has two vertical plates (71) fixed on it. The vertical plates (71) are equipped with adjustable horizontal plates (72) to prevent woven bags from falling to the outside of the conveyor belt (6).
8. The packaging scale with a clean area according to claim 7, characterized in that, A first waist-shaped groove (711) is provided on the vertical plate (71), and a locking bolt (73) is fixed on the horizontal plate (72). The locking bolt (73) passes through the first waist-shaped groove (711) and is threadedly connected to a locking nut (74).
9. The packaging scale with a clean area according to claim 8, characterized in that, A second waist-shaped groove (712) is provided on the vertical plate (71). A connecting rod (75) is fixed on the horizontal plate (72). The connecting rod (75) passes through the second waist-shaped hole. A fixing block (76) is slidably connected to the connecting rod (75). The connecting rod (75) passes through the fixing block (76). A plug-in rod (77) is fixed on the side of the fixing block (76) near the vertical plate (71). A spring (78) is fixed between the fixing block (76) and the vertical plate (71). The plug rod (77) is sleeved on the vertical plate (71). Multiple positioning holes (713) are provided on the vertical plate (71). The multiple positioning holes (713) are set along the height direction of the vertical plate (71). Under the action of the spring (78), the plug rod (77) is inserted into one of the positioning holes (713). The positioning hole (713) passes through the vertical plate (71). After the plug rod (77) passes through the positioning hole (713), it is located below the horizontal plate (72) and contacts the horizontal plate (72).
10. The packaging scale with a clean area according to claim 1, characterized in that, A cleaning chamber (8) is provided on one side of the bottom mounting plate (1). The cleaning chamber (8) is equipped with an air shower, a hand sanitizing room and a changing room. A protective shell (9) is fixed on one side of the cleaning chamber (8). The protective shell (9) covers the packaging scale inside. The buffer hopper (14) extends from the top of the protective shell (9).