A weightless scale with a leak-proof structure
By incorporating a multi-stage screening frame and a rolling roller structure into the loss-in-weight scale, the problem of impurity particles affecting weighing accuracy is solved, achieving high-precision weighing and leak-proof functions for powder materials and improving weighing reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIJIE STONE (SHANGHAI) ENG TECH CO LTD
- Filing Date
- 2025-08-08
- Publication Date
- 2026-06-30
AI Technical Summary
Existing loss-in-weight scales may contain impurity particles of varying sizes when breaking up agglomerated powder materials, affecting weighing accuracy and failing to effectively screen out impurity particles, leading to a decrease in weighing precision.
A loss-in-weight scale with a leak-proof structure was designed, comprising a first screening frame and a second screening frame, an electric telescopic rod, a rotating rod, a rotating motor, a crushing roller, a control motor, a pressure relief hole, and a filter screen. Impurity particles are screened through screens of different mesh sizes, and a crushing roller is set at the feed hopper to disperse the powder. The filter screen is used to prevent material leakage.
It improves the weighing accuracy of the loss-in-weight scale, effectively screens out impurity particles, and breaks up agglomerated powder with a crushing roller to prevent material leakage, thus ensuring the accuracy and reliability of weighing.
Smart Images
Figure CN224435543U_ABST
Abstract
Description
Technical Field
[0001] This utility model is a loss-of-weight scale with a leak-proof structure, belonging to the field of loss-of-weight scale technology. Background Technology
[0002] Loss-in-weight scales, also known as powder scales, are mainly used for measuring powders and other materials. They are weighing devices that can feed intermittently and discharge continuously. They are suitable for controlling the batching of fine materials such as cement, lime powder, coal powder, and additives, and therefore require high precision.
[0003] Chinese Patent Publication No. CN220011407U discloses a loss-in-weight scale with a leak-proof structure. This scale not only prevents leakage of internal materials but also breaks up clumps of powder, making it multifunctional. However, when breaking up clumps of powder, the scale may contain impurities of varying sizes. A large number of impurities in the powder can significantly affect the weighing accuracy of the scale. Furthermore, this scale does not have the function of sieving impurities. Therefore, there is an urgent need for a loss-in-weight scale with a leak-proof structure to solve the aforementioned problems. Utility Model Content
[0004] To address the shortcomings of existing technologies, the purpose of this invention is to provide a loss-in-weight scale with a leak-proof structure to solve the problems mentioned in the background. This invention has a reasonable structure, which can not only break up clumps of powder particles, but also remove impurities before weighing, greatly improving the accuracy of the loss-in-weight scale when weighing powder.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a loss-in-weight scale with a leak-proof structure, comprising a housing, supports, clamping plates, dust covers, a feeding assembly, a first screening frame, a second screening frame, the main body of the loss-in-weight scale, a leak-proof assembly, a feeding auger, a drive motor, electric telescopic rods, rotating rods, and a rotary motor. A clamping plate is located at the feeding assembly position on the top of the housing, and a dust cover is installed between the clamping plates. A support is also provided at the bottom of the housing. Inside the housing, a first screening frame is located next to the feeding assembly, and multiple sets of electric telescopic rods are provided on both sides of the first screening frame. Each set of electric telescopic rods is equipped with a corresponding drive motor connected to the side of the housing. A second screening frame is located directly below the first screening frame, and rotating rods are provided on both sides of the second screening frame. The rotating rod is connected to a rotating motor on the side of the box. The loss-in-weight scale body is located on the side of the second screening frame inside the box. A feeding auger is installed at the bottom of the loss-in-weight scale body via a feeding motor. Two leak-proof components are also provided on the top of the loss-in-weight scale body. The feeding component includes a feeding hopper, a baffle, a crushing roller, and a control motor. The feeding hopper is located on the top of the box, and a baffle is also added inside the feeding hopper. A crushing roller is located below the baffle, and a control motor is installed at the front end of the crushing roller. The leak-proof component includes a pressure relief hole, a top rod, a balance plug, and a filter screen. The pressure relief hole is located on the top of the loss-in-weight scale body, and a top rod is installed on the pressure relief hole. A balance plug is installed on the top rod, and a layer of filter screen is arranged between the balance plug and the top of the loss-in-weight scale body.
[0006] Furthermore, the stretched height of the filter mesh is such that it meets the height of the balance plug at the top of the push rod.
[0007] Furthermore, the entire crushing roller is close to the bottom side of the feed hopper, and a connecting rod is inserted inside the crushing roller to connect with the control motor.
[0008] Furthermore, the rotating motors on both sides of the second screening frame are equipped with signal control elements to synchronize the two.
[0009] Furthermore, the screening space of the second screening frame is larger than that of the first screening frame, and the mesh size of the screen in the second screening frame is slightly smaller than the size of the cement-lime powder particles.
[0010] Furthermore, the first screening frame uses a standard mesh screen that allows cement and lime powder particles to pass through, and the drive motors on both sides of the first screening frame are equipped with the same signal control elements.
[0011] The beneficial effects of this utility model are as follows: This utility model provides a loss-in-weight scale with a leak-proof structure. Because it incorporates a first screening frame, a second screening frame, an electric telescopic rod, a rotating rod, a rotating motor, a crushing roller, a control motor, a pressure relief hole, a balance plug, and a filter screen, the use of two different mesh sizes on the first and second screening frames helps to separate impurities of varying sizes from the powder material, thus improving the accuracy of the loss-in-weight scale. The crushing roller at the feed hopper helps to break up any agglomerated powder material, and the filter screen on the balance plug helps to prevent leakage of powder material during pressure relief and balancing. Attached Figure Description
[0012] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:
[0013] Figure 1 This is a schematic diagram of the overall structure of a loss-of-weight scale with a leak-proof structure according to the present invention;
[0014] Figure 2 This is a schematic diagram of the internal structure of a weightless scale with a leak-proof structure according to the present invention.
[0015] Figure 3 This is a schematic diagram of the internal structure of the box of a loss-of-weight scale with a leak-proof structure according to the present invention.
[0016] Figure 4 This is a schematic diagram of the feeding assembly structure of a loss-in-weight scale with a leak-proof structure according to the present invention.
[0017] Figure 5 This is a schematic diagram of the main body structure of a loss-of-weight scale with a leak-proof structure according to the present invention.
[0018] Figure 6 This is a schematic diagram of the leak-proof component structure of a weightless scale with a leak-proof structure according to the present invention.
[0019] In the diagram: 1-box body, 2-support, 3-groove plate, 4-dustproof cover, 5-feeding assembly, 6-first screening frame, 7-second screening frame, 8-loss-weight scale body, 9-leakage prevention assembly, 10-feeding auger, 11-drive motor, 12-electric telescopic rod, 13-rotating rod, 14-rotating motor, 51-feeding hopper, 52-baffle, 53-crushing roller, 54-control motor, 91-pressure relief hole, 92-top rod, 93-balance plug, 94-filter screen. Detailed Implementation
[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.
[0021] Please see Figures 1-6 This utility model provides a technical solution: a loss-in-weight scale with a leak-proof structure, including a box body 1, a support 2, a clamping plate 3, a dust cover 4, a feeding assembly 5, a first screening frame 6, a second screening frame 7, a loss-in-weight scale body 8, a leak-proof assembly 9, a feeding auger 10, a drive motor 11, an electric telescopic rod 12, a rotating rod 13, and a rotating motor 14. A clamping plate 3 is provided at the feeding assembly 5 position on the top of the box body 1, and a dust cover 4 is installed between the clamping plates 3. A support 2 is also provided at the bottom of the box body 1. Inside the box body 1, a first screening frame 6 is provided next to the feeding assembly 5, and multiple sets of electric telescopic rods 12 are provided on both sides of the first screening frame 6. Each set of electric telescopic rods 12 is equipped with a corresponding drive motor 11 connected to the side of the box body 1. A second screening frame 7 is provided directly below the first screening frame 6, and rotating rods 13 are provided on both sides of the second screening frame 7. The rotating rods 13 are connected to the side of the box body 1. The rotating motor 14 is connected to the box body 1. The second screening frame 7 is located on the side of the box body 1. The bottom of the loss-in-weight scale body 8 is equipped with a feeding auger 10 through a feeding motor. The top of the loss-in-weight scale body 8 is also equipped with two anti-leakage components 9. The feeding component 5 includes a feeding hopper 51, a baffle 52, a crushing roller 53 and a control motor 54. The feeding hopper 51 is located on the top of the box body 1. The baffle 52 is also installed in the feeding hopper 51. The crushing roller 53 is located below the baffle 52. The control motor 54 is installed at the front end of the crushing roller 53. The anti-leakage component 9 includes a pressure relief hole 91, a top rod 92, a balance plug 93 and a filter screen 94. The pressure relief hole 91 is opened on the top of the loss-in-weight scale body 8. A top rod 92 is also installed on the pressure relief hole 91. The balance plug 93 is installed on the top rod 92. A layer of filter screen 94 is arranged between the balance plug 93 and the top of the loss-in-weight scale body 8.
[0022] As the first embodiment of this utility model: the first screening frame 6 uses a standard mesh screen that allows cement-lime powder particles to pass through, and the drive motors 11 on both sides of the first screening frame 6 are equipped with the same signal control element. This design, by setting a standard mesh screen that allows cement-lime powder particles to pass through, helps the first screening frame 6 to screen out impurity particles larger than cement-lime powder particles. The drive motors 11 on both sides drive the electric telescopic rod 12, achieving the left-right extension and retraction effect of the first screening frame 6, thus aiding in the screening of powder particles within the first screening frame 6. The screening space of the second screening frame 7 is larger than that of the first screening frame 6, and the mesh size of the screen in the second screening frame 7 is slightly smaller than the size of the cement-lime powder particles. The rotating motors 14 on both sides of the second screening frame 7 are equipped with signal control elements to synchronize the two. This design, through the second... The screen inside the screening frame 7 separates impurity particles smaller than the powder particles, which fall directly into the empty area on the left side of the box 1, which helps to further screen the powder particles. The rotating motors 14 on both sides can make the second screening frame 7 tilt appropriately in the direction of the notch, which helps to pour the dust particles after screening the impurity particles into the loss-in-weight scale body 8. The crushing roller 53 is close to the bottom side of the feed hopper 51, and a connecting rod is inserted in the crushing roller 53 to connect with the control motor 54. This design, by setting the crushing roller 53 on the bottom side of the feed hopper 51, helps to crush the agglomerated powder particles and achieve the effect of breaking up the powder particles. The tension height of the filter screen 94 meets the height of the balance plug 93 when it is on top of the top rod 92. This design, by setting the filter screen 94, helps to prevent powder particles from leaking with the gas spray when the air pressure inside the loss-in-weight scale body 8 is too high and pressure is released for balancing.
[0023] As a second embodiment of this utility model: After opening the dust cover 4 on the top clamping plate 3 of the box 1, the powder material is poured into the feed hopper 51. Because the bottom side of the feed hopper 51 is equipped with a crushing roller 53 driven by a control motor 54, the agglomerated powder particles will be crushed by the crushing roller 53 when passing through its range. After being crushed into powder and dispersed, the powder enters the first screening frame 6 inside the box 1. The first screening frame 6 is equipped with drive motors 11 for electric telescopic rods 12 on both sides. Under the action of the signal control element, the drive motors 11 on both sides and the electric telescopic rods 12 will maintain a left-right telescopic movement. In this way, the first screening frame 6 will have a left-right lateral swaying effect, which helps to screen the dispersed powder particles. The screen in the first screening frame 6 will screen out impurities larger than the powder particles, and the remaining powder particles and... Smaller impurities fall into the second screening rack 7 below. Since the mesh size of the screen in the second screening rack 7 is smaller than that of the powder particles, impurities smaller than the powder particles will fall into the empty area inside the box 1, leaving only the pure powder particles. These powder particles will be slightly tilted towards the side with the notch on the second screening rack 7 as the two rotating motors 14 rotate synchronously. In this way, the powder particles will fall into the loss-in-weight scale body 8 for weighing. The feeding motor on the feeding auger 10 can be used to feed the powder. When the internal air pressure of the loss-in-weight scale body 8 is too high and needs to be released, the internal air pressure will be ejected through the pressure relief hole 91 and push up the balance plug 93. As the balance plug 93 is pushed up on the top rod 82, the connected filter screen 94 will also be raised. The filter screen 94 will filter and intercept the powder material to prevent the powder material from leaking with the gas jet.
[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0025] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A loss-in-weight scale with a leak-proof structure, comprising a housing (1), a support (2), a clamping plate (3), a dust cover (4), a feeding assembly (5), a first screening frame (6), a second screening frame (7), the main body of the loss-in-weight scale (8), a leak-proof assembly (9), a feeding auger (10), a drive motor (11), an electric telescopic rod (12), a rotating rod (13), and a rotary motor (14), characterized in that, The top of the box (1) is provided with a clamping plate (3) at the feeding assembly (5) position, and a dust cover (4) is installed between the clamping plates (3). The bottom of the box (1) is also provided with a support (2). Inside the box (1), a first screening frame (6) is provided next to the feeding assembly (5), and multiple sets of electric telescopic rods (12) are provided on both sides of the first screening frame (6). Each set of electric telescopic rods (12) is equipped with a corresponding drive motor (11) connected to the side of the box (1). A second screening frame (7) is provided directly below the first screening frame (6), and a rotating rod (13) is provided on both sides of the second screening frame (7). The rotating rod (13) is connected to a rotating motor (14) on the side of the box (1). A loss-in-weight scale body (8) is provided on the side of the second screening frame (7) inside the box (1). A feeding auger (10) is installed at the bottom of the loss-in-weight scale body (8) by a feeding motor. Two leak-proof components (9) are also provided on the top of the loss-in-weight scale body (8). The feeding assembly (5) includes a feeding hopper (51), a baffle (52), a rolling roller (53), and a control motor (54). The feeding hopper (51) is located on the top of the box (1), and a baffle (52) is also provided inside the feeding hopper (51). A rolling roller (53) is located below the baffle (52), and a control motor (54) is installed at the front end of the rolling roller (53). The leak-proof component (9) includes a pressure relief hole (91), a top rod (92), a balance plug (93), and a filter screen (94). The pressure relief hole (91) is located on the top of the loss-in-weight scale body (8), and a top rod (92) is installed on the pressure relief hole (91). The top rod (92) is equipped with a balance plug (93), and a filter screen (94) is arranged between the balance plug (93) and the top of the loss-in-weight scale body (8).
2. The loss-in-weight scale with a leak-proof structure according to claim 1, characterized in that: The first screening frame (6) uses a standard mesh screen that allows cement and lime powder particles to pass through, and the same signal control element is installed on the drive motors (11) on both sides of the first screening frame (6).
3. A loss-in-weight scale with a leak-proof structure according to claim 1, characterized in that: The screening space of the second screening frame (7) is larger than that of the first screening frame (6), and the mesh size of the screen in the second screening frame (7) is slightly smaller than that of the cement lime powder particles.
4. A loss-in-weight scale with a leak-proof structure according to claim 1, characterized in that: The rotating motors (14) on both sides of the second screening frame (7) are equipped with signal control elements to synchronize the two.
5. A loss-in-weight scale with a leak-proof structure according to claim 1, characterized in that: The roller (53) is close to the bottom side of the feed hopper (51), and a connecting rod is inserted inside the roller (53) to connect to the control motor (54).
6. A loss-in-weight scale with a leak-proof structure according to claim 1, characterized in that: The stretching height of the filter screen (94) is such that the balance plug (93) is at the top of the top rod (92).