Precise weighing device for plastering mortar production raw materials

Abstract

The utility model discloses a plastering mortar production raw material accurate weighing device which comprises a rack, a bearing shell and a weighing barrel, the rack is provided with a material storage box, the bottom of the material storage box is provided with a discharge port, the discharge port is located above the weighing barrel, the bearing shell is slidably clamped in the rack, the weighing barrel is rotatably installed in the bearing shell, and the weighing barrel is located above the bearing shell. The rack is provided with a plurality of springs, and the output ends of the springs abut against the bearing shell. Through cooperative arrangement of the spring and the sliding rod, the weighing barrel continuously descends when a certain amount of materials are stored in the weighing barrel, the sliding rod drives the pushing block to block the discharging opening during descending, the discharging amount is gradually reduced, and when the spring is compressed to a certain limit, the pushing block thoroughly seals the discharging opening, so that the discharging amount is reduced. Therefore, the compression amount of the spring is set to accurately control the weighing weight. And the gear is meshed with the annular rack, so that the rotary driving device drives the weighing barrel to rotate, and the scraping plate can scrape materials in the weighing barrel, so that the next material weighing is prevented from being influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of plaster mortar weighing devices, in particular to a precise weighing device for plaster mortar production raw materials. Background Art

[0002] Plaster mortar is a general term for a type of mortar that is applied to the building base to level or provide protection. Plaster mortar mainly includes cement plaster mortar and gypsum plaster mortar. During the production and preparation of plaster mortar, it is usually necessary to use a weighing device to weigh various production raw materials so that the various production raw materials can be mixed in a certain ratio to make plaster mortar.

[0003] In the prior art, raw materials for plaster mortar production are usually weighed manually, which results in large errors. Moreover, when the material is discharged after a single weighing, a large amount of residue remains on the inner wall of the weighing bucket, thus affecting the next weighing. Utility Model Content

[0004] Based on this, it is necessary to provide a precise weighing device for raw materials for plaster mortar production to address the above technical problems.

[0005] The discharging opening is located above the charging aperture, and the charging aperture is located above the charging aperture.

[0006] Preferably, a force sensor is installed at the output end of one of the springs, and the force sensor abuts against the bearing shell; an abutment plate with the same thickness as the force sensor is installed at the output end of the remaining springs, and the abutment plate abuts against the bearing shell.

[0007] Preferably, a blocking block is slidably engaged on the slide groove.

[0008] Preferably, the material stop block and the stop block are both provided with chamfers.

[0009] Preferably, there are two linear actuators, which are mounted on both sides of the bearing shell.

[0010] Preferably, pressure grooves are provided on both sides of the discharge port, and the blocking block is slidably engaged in the pressure grooves. A second spring is installed in the pressure grooves, and the output end of the second spring is connected to the blocking block.

[0011] Compared with the existing technology, this technical solution has at least one of the following beneficial effects:

[0012] Through the coordination of the spring and the slide bar, when there is a certain amount of material in the weighing barrel, it will continue to descend. When descending, the slide bar drives the push block to block the discharge port, so that the discharge volume gradually decreases. When the spring is compressed to a certain limit, the push block completely closes the discharge port, thereby setting the compression amount of the spring to accurately control the weighing weight.

[0013] The engagement of the gear and the annular rack causes the rotary drive device to drive the weighing barrel to rotate, so that the scraper can scrape the material in the weighing barrel, thereby avoiding affecting the next material weighing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front cross-sectional view of an embodiment of the present utility model;

[0015] Figure 2 A perspective view of an embodiment of the present invention;

[0016] Figure 3 A partial perspective view of an embodiment of the present invention;

[0017] Figure 4 For an embodiment of the present utility model Figure 1 Enlarged view of point A in the middle;

[0018] Figure 5 For an embodiment of the present utility model Figure 1 Enlarged view of point B in the middle;

[0019] In the figure, 1. frame; 2. bearing shell; 3. storage box; 4. discharge port; 5. weighing barrel; 6. spring; 7. slide; 8. stopper; 9. push groove; 10. slide rod; 11. linear actuator; 12. valve; 13. ring rack; 14. rotary drive device; 15. gear; 16. scraper; 17. force sensor; 18. abutment plate; 19. stopper; 20. pressure groove; 21. spring 2. DETAILED DESCRIPTION

[0020] To make the above-mentioned objects, features, and advantages of the present invention more clearly understood, the following detailed description of specific embodiments of the present invention is provided in conjunction with the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0021] See also Figures 1 to 5 The embodiment of the present application provides a precise weighing device for raw materials for plaster mortar production, including a frame 1, a bearing shell 2 and a weighing bucket 5. A storage box 3 is installed on the frame 1, and a discharge port 4 is provided at the bottom of the storage box 3. The discharge port 4 is located above the weighing bucket 5. The bearing shell 2 is slidably connected to the frame 1, and the weighing bucket 5 is rotatably installed in the bearing shell 2. A plurality of springs 6 are installed on the frame 1, and the output end of the spring 6 abuts against the bearing shell 2. Two slide grooves 7 are symmetrically arranged on the discharge port 4, and a stopper 8 is slidably connected in the slide groove 7. The stopper 8 is slidably connected to the frame 1, and a push groove 9 is provided on the stopper 8. A slide rod 10 is installed on the bearing shell 2, and the slide rod 10 is slidably connected to the push groove 9 Inside, a linear actuator 11 is installed on the frame 1. The linear actuator 11 can be an electric cylinder without a self-locking function. The output end of the linear actuator 11 is connected to the bearing shell 2. A valve 12 is installed at the bottom of the weighing barrel 5. The valve 12 can be a solenoid valve. The linear actuator 11 and the valve 12 should be connected through a signal processor signal; an annular rack 13 is installed on the weighing barrel 5, and a rotary drive device 14 is installed on the bearing shell 2. The rotary drive device 14 can be a motor. A gear 15 is installed on the output end of the rotary drive device 14. The gear 15 is meshed with the annular rack 13. A number of scrapers 16 are installed in the bearing shell 2, and the scrapers 16 abut against the inner wall of the weighing barrel 5.

[0022] In this embodiment, the material to be weighed falls into the weighing barrel 5 from the discharge port 4 at the bottom of the storage box 3. As the material in the weighing barrel 5 increases, the compression spring 6 begins to be continuously compressed and descends. When the weighing barrel 5 descends, the slide bar 10 is driven to descend together, and the descending slide bar 10 drives the two stoppers 8 to slide toward each other in the slide groove 7 through the inclined pushing groove 9 to gradually close the discharge port 4. The discharge amount of the gradually closed discharge port 4 gradually decreases, so that the material can be slowly added to the required weight, and when the material in the weighing barrel 5 reaches the required weight, the two stoppers 8 can just completely close the discharge port 4, so that the material is no longer discharged from the discharge port 4, so as to achieve accurate Purpose of weighing; when the weighing bucket 5 drives the carrying shell 2 to descend, the output end of the linear actuator 11 is not self-locking and can shorten as the carrying shell 2 descends, thereby not affecting the compression of the spring 6. When the weighing is completed, the valve 12 starts to discharge the material and the linear actuator 11 starts to work to pull the carrying shell 2 to prevent the spring 6 from driving it to move upward; when the weighing bucket 5 completes the discharge of the material weighed in a single weighing, the rotary drive device 14 drives the gear 15 to rotate, thereby driving the weighing bucket 5 to rotate through the annular rack 13, so that the several scrapers 16 installed in the carrying shell 2 can scrape off the residual material on the inner wall of the weighing bucket 5 to avoid affecting the next weighing.

[0023] In some embodiments, to further improve weighing accuracy and prevent inaccurate weighing due to spring 6 wear, a force sensor 17 is installed at the output end of one of the springs 6. Force sensor 17 is connected to the linear actuator 11 via a signal processor. Force sensor 17 can be a pressure sensor and abuts against the load-bearing shell 2. Abutment plates 18 of the same thickness as force sensor 17 are installed at the output ends of the remaining springs 6. Abutment plates 18 abut against the load-bearing shell 2. The value measured by force sensor 17 can thus be used to determine the weight of the material in the weighing barrel 5. When the value detected by force sensor 17 is greater than the desired weight of the material, the linear actuator 11 can be used to drive the load-bearing shell 2 downward, causing the discharge port 4 to stop discharging material and allowing the spring 6 to be replaced.

[0024] In some embodiments, to prevent material from being discharged from the chute 7 without being blocked by the block 8, a block 19 is provided on the chute 7 to be slidably engaged. Thus, the block 19 slides downward to block the material, cooperating with the block 8 to shield the chute 7 to a certain extent and prevent the material from flowing out.

[0025] In some embodiments, in order to scrape off the material adhering to the stopper 8, both the stopper 19 and the stopper 8 are provided with chamfers.

[0026] In some embodiments, in order to facilitate maintaining balance when the carrying shell 2 drives the weighing bucket 5 to move up and down, two linear actuators 11 are provided, and the two linear actuators 11 are provided on both sides of the carrying shell 2 .

[0027] In some embodiments, in order to facilitate the sliding and clamping of the stop block 19 in the slide groove 7, pressure grooves 20 are provided on both sides of the discharge port 4, and the stop block 19 is slidably clamped in the pressure groove 20. A spring 21 is installed in the pressure groove 20, and the output end of the spring 21 is connected to the stop block 19.

[0028] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The above embodiments merely illustrate several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the concept of the present invention, and these variations and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0032] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

Claims

1. A precise weighing device for raw materials for plaster mortar production, comprising a frame (1), a bearing shell (2) and a weighing barrel (5), wherein a material storage box (3) is mounted on the frame (1), a discharge port (4) is provided at the bottom of the material storage box (3), and the discharge port (4) is located above the weighing barrel (5), and the bearing shell (2) is slidably engaged in the frame (1), characterized in that: The weighing barrel (5) is rotatably mounted in the bearing shell (2), and the frame (1) is equipped with a plurality of springs (6). The output end of the spring (6) abuts against the bearing shell (2). Two chute grooves (7) are symmetrically arranged on the discharge port (4). A stopper (8) is slidably connected in the chute (7). The stopper (8) is slidably connected to the frame (1). A push groove (9) is provided on the stopper (8). A slide rod (10) is mounted on the bearing shell (2). The slide rod (10) is slidably engaged in the push groove (9). A linear actuator (11) is provided, wherein the output end of the linear actuator (11) is connected to the bearing shell (2), and a valve (12) is installed at the bottom of the weighing barrel (5); an annular rack (13) is installed on the weighing barrel (5), and a rotary drive device (14) is installed on the bearing shell (2); a gear (15) is installed at the output end of the rotary drive device (14), and the gear (15) is meshedly connected with the annular rack (13); a plurality of scrapers (16) are installed in the bearing shell (2), and the scrapers (16) abut against the inner wall of the weighing barrel (5).

2. The precise weighing device for raw materials for plaster mortar production according to claim 1, characterized in that: A force sensor (17) is installed at the output end of one of the springs (6), and the force sensor (17) abuts against the bearing shell (2); an abutment plate (18) having the same thickness as the force sensor (17) is installed at the output end of the remaining springs (6), and the abutment plate (18) abuts against the bearing shell (2).

3. The precise weighing device for raw materials for plaster mortar production according to claim 1, characterized in that: A blocking block (19) is slidably engaged on the chute (7).

4. The precise weighing device for raw materials for plaster mortar production according to claim 3 is characterized in that: The stop block (19) and the stop block (8) are both provided with chamfers.

5. The precise weighing device for raw materials for plaster mortar production according to claim 1, characterized in that: There are two linear actuators (11), and the two linear actuators (11) are arranged on both sides of the supporting shell (2).

6. The precise weighing device for raw materials for plaster mortar production according to claim 3, characterized in that: Pressure grooves (20) are provided on both sides of the discharge port (4), and the stop block (19) is slidably engaged in the pressure groove (20). A second spring (21) is installed in the pressure groove (20), and the output end of the second spring (21) is connected to the stop block (19).

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