High-precision weighing machine metering device

Abstract

The utility model relates to the technical field of material metering, in particular to a high-precision weighing machine metering device which comprises a metering pipe, ball valve pipes are fixedly connected to the two ends of the metering pipe respectively, and ball valve elements are rotatably connected to the inner walls of the ball valve pipes. When the metering tube is filled, materials can enter the metering tube by opening the upper ball valve element and closing the lower ball valve element, the metering tube is used as a storage container for metering, and when the metering tube is filled, the current volume is the volume of the metering tube, and then the materials are discharged by closing the upper ball valve element and opening the lower ball valve element. Therefore, the purpose of intermittent accurate metering can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of material metering technology, specifically a high-precision weighing machine metering device. Background Technology

[0002] Metering tanks are used for material storage and in applications where high metering accuracy is not required. They are broadly classified into two categories based on the metering medium: liquid metering and powder / particle / solid metering. Valves, in fluid systems, are devices used to control the direction, pressure, and flow rate of fluids. They are devices that allow the flow or stop of media (liquids, gases, powders) within piping and equipment and can control their flow rate. Material metering and quantitative feeding are crucial aspects of the production process; the accuracy and stability of metering and quantitative feeding directly affect product quality and production line capacity.

[0003] Existing technology, such as publication number CN220810633U, provides a metering tank with a dual-valve feeding device. This addresses the issue that in existing valve metering tanks, a single valve cannot guarantee high-precision material dispensing during use, leading to raw material waste. Furthermore, screw structures require motor drive, resulting in complex structures and high production and operating costs. Therefore, this invention proposes a metering tank with a dual-valve feeding device. To achieve the above objective, this utility model adopts the following technical solution: A metering tank with a dual-valve feeding device, comprising a metering tank, a weighing device, and a feeding device, characterized in that: a weighing device is installed above the metering tank; a breather valve is provided on one side of the top of the metering tank; and the feeding device is connected to a first butterfly valve and a second butterfly valve via flanges.

[0004] The current solution primarily controls the flow rate of two sets of butterfly valves in conjunction with a weighing device for measurement. However, the actual flow rate is affected not only by the flow area but also by the flow velocity. When the flow velocity changes significantly, adjusting the flow area alone is insufficient. Since there is a time lag when the butterfly valves adjust the flow area, controlling the actual flow rate becomes difficult when the flow velocity changes drastically. Therefore, we propose a high-precision weighing device. Utility Model Content

[0005] The purpose of this utility model is to provide a high-precision weighing and metering device. This high-precision weighing and metering device solves the problem that adjusting the flow area by changing the flow area is difficult to control the actual flow rate when the flow rate changes significantly due to the time difference when the butterfly valve adjusts the flow area.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A high-precision weighing machine metering device includes a metering tube, with ball valve tubes fixedly connected to both ends of the metering tube, and a ball valve core rotatably connected to the inner wall of the ball valve tube. Connecting shafts are respectively provided on the outer walls of the two sets of ball valve tubes, and the connecting shafts pass through the ball valve tubes and are fixedly connected to the ball valve cores.

[0008] Two connecting shafts are respectively fixedly connected to the first gear at the end of the ball valve tube away from the ball valve core. A support frame is fixedly connected to the outer wall of the metering tube. A slide bar is slidably connected to the inner wall of the support frame. Two sets of first teeth for meshing with the first gear are fixedly connected to the slide bar, and only one set of first teeth can mesh with the first gear at the same time.

[0009] Preferably, the angle difference between the through holes on the two sets of ball valve cores is ninety degrees, and the length of the first tooth in one set is one-quarter of the turn of the first gear.

[0010] Preferably, a second tooth is fixedly connected to the side of the slide bar away from the first tooth, and a second gear is rotatably connected to the outer wall of the support frame, and the second gear meshes with the second tooth.

[0011] Preferably, a worm gear is fixedly connected to one side of the second gear, a worm is meshed with the outer wall of the worm gear, and a motor for driving the worm to rotate is fixedly connected to the outer wall of the support frame.

[0012] Preferably, piston rings are slidably connected above and below the metering tube.

[0013] Preferably, a support block is fixedly connected to the outer wall of the metering tube, and a bidirectional threaded rod is rotatably connected to the inner wall of the support block. Connecting frames are threaded to both sides of the bidirectional threaded rod, and the connecting frames are fixedly connected to the piston rings at corresponding positions.

[0014] Preferably, a handwheel is fixedly connected to one end of the top of the bidirectional threaded rod for driving the bidirectional threaded rod to rotate.

[0015] By employing the above technical solution, this utility model provides a high-precision weighing and metering device. It possesses at least the following beneficial effects:

[0016] I. This utility model uses two sets of ball valve cores in conjunction with a metering tube. By opening the upper ball valve core and closing the lower ball valve core, material can enter the metering tube, which serves as a storage container for measurement. When the metering tube is full, the current capacity is the volume of the metering tube. Then, by closing the upper ball valve core and opening the lower ball valve core, the material can be discharged, thus achieving the purpose of intermittent and accurate metering.

[0017] II. This utility model uses piston rings at both ends of the metering tube to facilitate control of the volume of the metering tube by extending and retracting the piston rings, thereby facilitating the adjustment of the single measurement. By rotating the handwheel, the bidirectional threaded rod is rotated, and the connection between the piston rings and the metering tube provides a limit, allowing the bidirectional threaded rod to push the piston rings connected to the connecting brackets at both ends to extend and retract, thus facilitating the adjustment of the storage capacity of the metering tube. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the metering tube in this utility model;

[0021] Figure 3 This is a schematic diagram of the support frame and slide bar in this utility model;

[0022] Figure 4 In this utility model Figure 2 Enlarged view of point A in the image.

[0023] In the diagram: 1. Metering tube; 2. Ball valve tube; 3. Ball valve core; 31. Connecting shaft; 32. First gear; 33. Support frame; 34. Sliding bar; 35. First tooth; 36. Second tooth; 37. Second gear; 38. Worm gear; 39. Worm; 391. Motor; 4. Piston ring; 41. Support block; 42. Double-ended threaded rod; 43. Connecting frame; 44. Handwheel. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] A high-precision weighing and metering device, such as Figure 1 - Figure 4As shown, the device includes a metering tube 1, with ball valve tubes 2 fixedly connected to both ends of the metering tube 1. A ball valve core 3 is rotatably connected to the inner wall of the ball valve tube 2. Connecting shafts 31 are respectively provided on the outer walls of the two sets of ball valve tubes 2, and the connecting shafts 31 pass through the ball valve tubes 2 and are fixedly connected to the ball valve cores 3. A first gear 32 is fixedly connected to the end of the two connecting shafts 31 located away from the ball valve cores 3 of the ball valve tubes 2. A support frame 33 is fixedly connected to the outer wall of the metering tube 1, and a slide bar 34 is slidably connected to the inner wall of the support frame 33. Two sets of first teeth 35 for meshing with the first gear 32 are fixedly connected to the slide bar 34, and only one tooth can mesh with the first gear 32 at a time. The first tooth 35 meshes with the first gear 32. The angle difference between the through holes on the lower ball valve core 3 is 90 degrees. The length of the lower first tooth 35 is one-quarter of the turn of the first gear 32. The lower slide bar 34 is fixedly connected to the side away from the first tooth 35 with the second tooth 36. The lower support frame 33 is rotatably connected to the outer wall with the second gear 37, and the second gear 37 meshes with the second tooth 36. The lower second gear 37 is fixedly connected to one side with the worm gear 38. The lower worm gear 38 is meshed with the outer wall with the worm 39. The lower support frame 33 is fixedly connected to the outer wall with the motor 391 for driving the worm 39 to rotate.

[0026] In this embodiment, during actual use, the worm gear 39 is driven to rotate by the motor 391, which in turn drives the second gear 37 to rotate via the worm wheel 38. The second teeth 36 meshing with the second gear 37 then push the slide bar 34 to move. Since only one set of the two sets of first teeth 35 on the slide bar 34 can be engaged with the first gear 32 at any given time, the slide bar 34 can drive the ball valve core 3 connected to one of the first gears 32 to open and close. This allows material to enter the metering tube 1 by opening the upper ball valve core 3 and closing the lower ball valve core 3, using the metering tube 1 as a storage container for metering. When the metering tube 1 is full, the current capacity is the volume of the metering tube 1. Then, by closing the upper ball valve core 3 and opening the lower ball valve core 3, the material is discharged, thus achieving the purpose of intermittent and accurate metering.

[0027] like Figure 2 As shown, preferably, piston rings 4 are slidably connected to the upper and lower parts of the lower metering tube 1, respectively. A support block 41 is fixedly connected to the outer wall of the lower metering tube 1, and a bidirectional threaded rod 42 is rotatably connected to the inner wall of the lower support block 41. Connecting brackets 43 are threadedly connected to both sides of the lower bidirectional threaded rod 42, and the connecting brackets 43 are fixedly connected to the piston rings 4 at the corresponding positions. A handwheel 44 is fixedly connected to one end of the top of the lower bidirectional threaded rod 42 for driving the bidirectional threaded rod 42 to rotate.

[0028] In this embodiment, piston rings 4 are provided at both ends of the metering tube 1 to facilitate the control of the volume of the metering tube 1 by the extension and retraction of the piston rings 4, so as to facilitate the adjustment of the single measurement size. By rotating the handwheel 44, the bidirectional threaded rod 42 is rotated. The connection relationship between the piston rings 4 and the metering tube 1 is used to limit the movement, so that the bidirectional threaded rod 42 can push the piston rings 4 connected to the connecting brackets 43 at both ends to extend and retract, so as to facilitate the adjustment of the storage capacity of the metering tube 1.

[0029] In use, the high-precision weighing and metering device of this utility model is driven by a motor 391 to rotate a worm gear 39, which in turn drives a second gear 37 to rotate via a worm wheel 38. The second teeth 36 meshing with the second gear 37 then push a slide bar 34 to move. Since only one set of the two sets of first teeth 35 on the slide bar 34 can engage with the first gear 32 at a time, the slide bar 34 can drive the ball valve core 3 connected to one of the first gears 32 to open and close. This allows material to enter the metering tube 1 by opening the upper ball valve core 3 and closing the lower ball valve core 3, using the metering tube 1 as a storage container for metering. When the metering tube 1 is full... The current capacity is the volume of metering tube 1. By closing the upper ball valve core 3 and opening the lower ball valve core 3 to discharge the material, the purpose of intermittent and accurate metering can be achieved. By setting piston rings 4 at both ends of metering tube 1, the volume of metering tube 1 can be controlled by the extension and retraction of piston rings 4, so as to facilitate the adjustment of the single metering size. By turning the handwheel 44, the bidirectional threaded rod 42 is rotated. The connection relationship between piston ring 4 and metering tube 1 is used to limit the movement, so that bidirectional threaded rod 42 can push the piston ring 4 connected to the connecting brackets 43 at both ends to extend and retract, so as to facilitate the adjustment of the storage capacity of metering tube 1.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision weighing machine metering device, comprising a metering tube (1), characterized in that: The two ends of the metering tube (1) are respectively fixedly connected to ball valve tubes (2), and the inner wall of the ball valve tube (2) is rotatably connected to a ball valve core (3). The outer walls of the two sets of ball valve tubes (2) are respectively provided with connecting shafts (31), and the connecting shafts (31) pass through the ball valve tubes (2) and are fixedly connected to the ball valve cores (3). Two connecting shafts (31) are fixedly connected to the first gear (32) at the end of the ball valve tube (2) away from the ball valve core (3). A support frame (33) is fixedly connected to the outer wall of the metering tube (1). A slide bar (34) is slidably connected to the inner wall of the support frame (33). Two sets of first teeth (35) for meshing with the first gear (32) are fixedly connected to the slide bar (34), and only one set of first teeth (35) can mesh with the first gear (32) at the same time.

2. The high-precision weighing and metering device according to claim 1, characterized in that: The angle difference between the through holes of the two sets of ball valve cores (3) is 90 degrees, and the length of the first tooth (35) of one set is one-quarter of the turn of the first gear (32).

3. The high-precision weighing and metering device according to claim 2, characterized in that: The slide bar (34) is fixedly connected to a second tooth (36) on the side away from the first tooth (35), and the outer wall of the support frame (33) is rotatably connected to a second gear (37), and the second gear (37) meshes with the second tooth (36).

4. The high-precision weighing and metering device according to claim 3, characterized in that: A worm gear (38) is fixedly connected to one side of the second gear (37), and a worm (39) is meshed with the outer wall of the worm gear (38). A motor (391) for driving the worm (39) to rotate is fixedly connected to the outer wall of the support frame (33).

5. The high-precision weighing and metering device according to claim 1, characterized in that: Piston rings (4) are slidably connected above and below the metering tube (1).

6. The high-precision weighing and metering device according to claim 5, characterized in that: The outer wall of the metering tube (1) is fixedly connected to a support block (41), and the inner wall of the support block (41) is rotatably connected to a bidirectional threaded rod (42). The two sides of the bidirectional threaded rod (42) are respectively threadedly connected to a connecting frame (43), and the connecting frame (43) is fixedly connected to the piston ring (4) at the corresponding position.

7. The high-precision weighing and metering device according to claim 6, characterized in that: A handwheel (44) is fixedly connected to one end of the top of the bidirectional threaded rod (42) for driving the bidirectional threaded rod (42) to rotate.

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