Powder sample weighing mechanism

Abstract

The utility model discloses a powder sample weighing mechanism which comprises an adjusting unit, a blanking unit and a weighing unit, the adjusting unit comprises a lifting part and a top plate, and the lifting part is connected with the top plate to drive the top plate to lift along the vertical direction; the discharging unit comprises a discharging hopper, a driving part and a plug, the discharging hopper is arranged on the top plate, the driving part is connected with the top plate, the plug is arranged in the discharging hopper and connected with the output end of the driving part, and the driving part is used for driving the plug to open or close the discharging port; the weighing unit is arranged below the discharging hopper, and when the equivalent weight cylinder is arranged on the weighing unit, a discharging port of the discharging hopper can be inserted into an opening in the top end of the measuring cylinder. The problem that in the prior art, powder samples are prone to scattering when being weighed is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling mechanisms, and particularly relates to a powder sample weighing mechanism. Background Art

[0002] The tapped density is an important parameter of powder materials. With the improvement of scientific research requirements, the detection volume of powder samples is large in material testing laboratories. It is necessary to take samples of powder samples multiple times and detect the sampled samples.

[0003] During the related testing process, it is necessary to take samples from the sample bag with a spoon and transfer them into a special testing graduated cylinder. Since the open mouth of the graduated cylinder is relatively narrow and the weighed sample is generally heavy, the powder sample is likely to spill during the sampling process, and the dust problem is relatively serious, which is likely to cause pollution to the workshop environment and pose a greater potential health hazard to the testing personnel. Content of the Utility Model

[0004] The purpose of the utility model is to overcome the above technical deficiencies and provide a powder sample weighing mechanism to solve the problem that the powder sample is likely to spill during weighing in the prior art.

[0005] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a powder sample weighing mechanism, which includes an adjustment unit, a blanking unit and a weighing unit. The adjustment unit includes a lifting member and a top plate. The lifting member is connected to the top plate to drive the top plate to lift in the vertical direction. The blanking unit includes a blanking funnel, a driving member and a plug. The blanking funnel is arranged on the top plate. The driving member is connected to the top plate. The plug is arranged in the blanking funnel and connected to the output end of the driving member. The driving member is used to drive the plug to open or close the discharge port. The weighing unit is arranged below the blanking funnel. When a graduated cylinder is arranged on the weighing unit, the discharge port of the blanking funnel can be inserted into the open mouth at the top of the graduated cylinder.

[0007] In some embodiments, the lifting member includes a base, a vertical plate and a threaded rod. The vertical plate is fixedly arranged on one side of the base. The threaded rod is rotatably arranged on the vertical plate along the height direction of the vertical plate. A connecting block on one side of the top plate is slidably connected to the vertical plate and is in threaded rotational connection with the threaded rod.

[0008] In some embodiments, a through hole is formed in the top plate, and the blanking funnel passes through the through hole.

[0009] In some embodiments, the driving member includes a mounting frame and a telescopic part. The mounting frame is fixedly arranged on the top plate. The telescopic part is fixedly arranged on the mounting frame. The output end of the telescopic part is fixedly connected to the plug.

[0010] In some embodiments, the plug is spherical as a whole.

[0011] In some embodiments, a controller is further included, and the controller is electrically connected to the weighing unit and the telescopic part respectively.

[0012] In some embodiments, a sleeve is fixedly provided at the bottom end of the blanking funnel. An annular space is formed between the inner wall of the sleeve and the outer wall of the discharge port, and the annular space is communicated with the dust removal unit. The top end of the measuring cylinder can extend into the annular space.

[0013] In some embodiments, the sleeve is a transparent acrylic tube.

[0014] In some embodiments, both the weighing unit and the controller are arranged on the base.

[0015] In some embodiments, the lifting member further includes a rotating handwheel, and the rotating handwheel is fixedly connected to the top end of the threaded rod.

[0016] Compared with the prior art, a powder sample weighing mechanism provided by the present utility model is characterized in that a lifting member is connected to a top plate to drive the top plate to lift in the vertical direction. A blanking funnel is arranged on the top plate, a driving member is connected to the top plate, a plug is arranged in the blanking funnel and connected to the output end of the driving member, and the driving member is used to drive the plug to open or close the discharge port. A weighing unit is arranged below the blanking funnel. When a measuring cylinder is arranged on the weighing unit, the discharge port of the blanking funnel can be inserted into the open top end of the measuring cylinder; it can ensure that the powder sample can be accurately transferred into the measuring cylinder without sample scattering, and the weighing unit can effectively weigh the weight of the sampled sample, improving the accuracy of the sampling weight of the powder sample. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of a powder sample weighing mechanism provided by an embodiment of the present utility model;

[0018] Figure 2 is a partial structural diagram of a blanking unit provided by an embodiment of the present utility model;

[0019] Figure 3 is a partial structural diagram of a powder sample weighing mechanism provided by an embodiment of the present utility model. Detailed Embodiments

[0020] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0021] To solve the technical problem that powder samples are prone to spillage during weighing in the prior art, the present utility model provides a powder sample weighing mechanism, which can avoid the situation of the sampled samples scattering when being transferred into a measuring cylinder, and at the same time, ensure the mass accuracy of the sampled samples.

[0022] Please refer to Figures 1 - 3 , Figures 1 - 3 which is a powder sample weighing mechanism in an embodiment of the present utility model, including an adjustment unit 1, a feeding unit 2 and a weighing unit 3. The adjustment unit 1 includes a lifting member 11 and a top plate 12. The lifting member 11 is connected to the top plate 12 to drive the top plate 12 to lift and lower in the vertical direction. The feeding unit 2 includes a feeding funnel 21, a driving member 22 and a plug 23. The feeding funnel 21 is arranged on the top plate 12. The driving member 22 is connected to the top plate 12. The plug 23 is arranged in the feeding funnel 21 and connected to the output end of the driving member 22. The driving member 22 is used to drive the plug 23 to open or close the discharge port. The weighing unit 3 is arranged below the feeding funnel 21. When a measuring cylinder A is arranged on the weighing unit 3, the discharge port of the feeding funnel 21 can be inserted into the open top of the measuring cylinder.

[0023] It should be noted that since the heights of measuring cylinders A with different volumes are different, in order to facilitate the discharge port of the feeding funnel 21 to be inserted into the measuring cylinder A, it is necessary to ensure that the feeding funnel 21 can rise or fall in the vertical direction, and the inner diameter of the discharge port is smaller than the inner diameter of the open top of the measuring cylinder.

[0024] In this specific embodiment, please refer to Figure 1 , the lifting member 11 includes a base 111, a vertical plate 112 and a threaded rod 113. The vertical plate 112 is fixedly arranged on one side of the base 111. The threaded rod 113 is rotatably arranged on the vertical plate 112 along the height direction of the vertical plate 112. A connecting block on one side of the top plate 12 is slidably connected to the vertical plate 112 and is threadedly and rotatably connected to the threaded rod 113.

[0025] In addition, the lifting member 11 further includes a rotating handwheel. The rotating handwheel 114 is fixedly connected to the top end of the threaded rod 113.

[0026] Specifically, a strip-shaped hole is formed in the vertical plate 112. A connecting block on one side of the top plate 12 slidably passes through the strip-shaped hole and is threadedly and rotatably connected to the threaded rod 113. By rotating the threaded rod 113, the top plate 12 can be driven to move along the axis direction of the threaded rod 113.

[0027] In this specific embodiment, please refer to Figure 1 and Figure 2, a through hole 121 is formed in the top plate 12, and the feeding funnel 21 is inserted into the through hole 121. It should be noted that the inner diameter of the feeding funnel 21 facing the discharge port is arranged to be reduced, and the maximum inner diameter of the feeding funnel 21 is greater than the inner diameter of the through hole 121.

[0028] It should be noted that the driving member 22 is not limited to a specific structure, as long as it can drive the plug to close or open the discharge port, and no other limitations are made here.

[0029] In this specific embodiment, please refer to Figure 3 , the driving member 22 includes a mounting frame 221 and a telescopic portion 222. The mounting frame 221 is fixedly arranged on the top plate 12, the telescopic portion 222 is fixedly arranged on the mounting frame 221, and the output end of the telescopic portion 222 is fixedly connected to the plug 23. Among them, the plug 23 is integrally spherical, and the inner diameter of the plug 23 is greater than the inner diameter of the discharge port.

[0030] In addition, the feeding funnel 21 can be made of smooth materials such as glass or polytetrafluoroethylene, which is not easy to adhere to materials and is simple and convenient for cleaning and maintenance. Among them, the plug 23 is made of rubber material.

[0031] On the basis of the above solution, a controller 4 is further included. The controller 4 is electrically connected to the weighing unit 3 and the telescopic portion 222 respectively. Among them, the weighing unit 3 is an electronic scale, and the telescopic portion 222 is an electric push rod. When the electronic scale weighs that the weight of the powder sample in the measuring cylinder reaches the predetermined value, the electronic scale transmits the weight signal to the controller 4, and the controller 4 can control the electric push rod to drive the plug 23 to close the discharge port.

[0032] In this specific embodiment, the weighing unit 3 and the controller 4 are both arranged on the base 111.

[0033] On the basis of the above solution, a sleeve 24 is further fixedly arranged at the bottom end of the feeding funnel 21. An annular space is formed between the inner wall of the sleeve 24 and the outer wall of the discharge port, and the annular space is communicated with the dust removal unit 5. The top end of the measuring cylinder can extend into the annular space.

[0034] It should be noted that the dust removal unit 5 is not limited to a specific structure, as long as it can pump air from the annular space to make the annular space form a negative pressure cavity. Specifically, the dust removal unit 5 is a dust collector and an air extraction pump, and the dust collector is communicated with the annular space through the air extraction pump.

[0035] On the basis of the above solution, the sleeve 24 is a transparent acrylic tube. Of course, in other embodiments, the sleeve 24 can also be a transparent PVC tube. By using a transparent material for the sleeve 24, the purpose is to clearly observe the depth of the top of the measuring cylinder inserted into the annular space.

[0036] To better understand the present invention, the following is a detailed description of the technical solution of the present invention in conjunction with Figures 1 to 3 the present invention:

[0037] Place the measuring cylinder on the weighing unit 3, ensure that the top of the measuring cylinder is inserted into the annular space, and the discharge port of the feeding funnel 21 is inserted into the open top of the measuring cylinder. Drive the plug 23 to open the discharge port through the telescopic part 222, and the powder sample in the feeding funnel 21 can fall into the measuring cylinder. Weigh the weight of the sampled powder sample through the weighing unit 3, and the annular space can also be evacuated through the dust removal unit 5.

[0038] The specific embodiments of the present invention described above do not constitute a limitation to the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A powder sample weighing mechanism, comprising an adjusting unit, a feeding unit and a weighing unit, characterized in that: The adjusting unit comprises a lifting member and a top plate, wherein the lifting member is connected to the top plate to drive the top plate to rise and fall in a vertical direction; The material discharge unit comprises a material discharge hopper, a driving member and a plug, wherein the material discharge hopper is arranged on the top plate, the driving member is connected to the top plate, the plug is arranged in the material discharge hopper and connected to the output end of the driving member, and the driving member is used to drive the plug to open or close the discharge port; The weighing unit is arranged below the feeding funnel. When the measuring cylinder is arranged on the weighing unit, the discharge port of the feeding funnel can be inserted into the opening at the top of the measuring cylinder.

2. A powder sample weighing mechanism according to claim 1, characterized in that: The lifting member includes a base, a vertical plate and a threaded rod. The vertical plate is fixed on one side of the base. The threaded rod is rotatably arranged on the vertical plate along the height direction of the vertical plate. The connecting block on one side of the top plate is slidably connected to the vertical plate and is threadedly rotatably connected to the threaded rod.

3. A powder sample weighing mechanism according to claim 1, characterized in that: A through hole is provided on the top plate, and the feeding funnel is passed through the through hole.

4. A powder sample weighing mechanism according to claim 1, characterized in that: The driving member comprises a mounting frame and a telescopic part, wherein the mounting frame is fixedly arranged on the top plate, the telescopic part is fixedly arranged on the mounting frame, and an output end of the telescopic part is fixedly connected to the plug.

5. A powder sample weighing mechanism according to claim 4, characterized in that: The plug is spherical in shape as a whole.

6. A powder sample weighing mechanism according to claim 2, characterized in that: It also includes a controller, which is electrically connected to the weighing unit and the telescopic part respectively.

7. A powder sample weighing mechanism according to claim 1, characterized in that: A sleeve is also fixedly provided at the bottom end of the discharge funnel, and an annular space is formed between the inner wall of the sleeve and the outer wall of the discharge port, and the annular space is connected to the dust removal unit, and the top end of the measuring cylinder can extend into the annular space.

8. A powder sample weighing mechanism according to claim 7, characterized in that: The sleeve is a transparent acrylic tube.

9. A powder sample weighing mechanism according to claim 6, characterized in that: The weighing unit and the controller are both arranged on the base.

10. A powder sample weighing mechanism according to claim 2, characterized in that: The lifting member also includes a rotating hand wheel, and the rotating hand wheel is fixedly connected to the top end of the threaded rod.

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