A tap density meter

Abstract

The present invention discloses a tap density meter, including a support plate, an annular cam, a tap base plate and N tap components, wherein the annular cam is mounted on the support plate, the annular cam is connected to the input end of a transmission mechanism through a main shaft, the output end of the transmission mechanism is respectively connected to the corresponding tap components, the tap components are mounted on the tap base plate, the tap base plate is mounted above the support plate through a plurality of base plate pillars, and a measuring cylinder is mounted on the upper end of the tap component; the N tap components have the same structure, wherein a guide sleeve is mounted on the tap base plate, a guide rod passes through a rotating drive sleeve and abuts against the upper edge of the annular cam; the middle diameter reducing portion of the guide rod is a vibrating hammer, and the vibrating hammer is arranged in the guide sleeve; the measuring cylinder is fixedly mounted on the guide rod through a measuring cylinder fixing seat. The present invention drives one or more stations to lift upward and freely fall by a motor while rotating around the axis of the measuring cylinder itself, thereby avoiding the phenomenon that the upper surface of the sample is tilted after the tap density meter that does not rotate in the past is tapped, and further improving the measurement accuracy.

Description

Technical Field

[0001] The invention relates to a density meter for measuring powder or granular material, in particular to a tap density meter. Background Art

[0002] The tap density meter fixes the graduated cylinder filled with powder or particles on a mechanical vibration device. The vibration motor drives the mechanical vibration device to vibrate vertically up and down. The graduated cylinder filled with powder or particles vibrates rhythmically with the mechanical vibration device. As the number of vibrations increases, the powder or particles in the graduated cylinder are gradually vibrated. After the number of vibrations reaches the set number, the mechanical vibration device stops vibrating, and the volume of the graduated cylinder is read out. According to the definition of density, it is measured, that is, mass divided by volume, so as to calculate the density of the powder or particles after tapping.

[0003] The existing tap density meter uses one motor to drive one station to vibrate and another motor to drive the measuring cylinder to rotate automatically. Or one motor drives multiple cams and multiple stations to rotate. Multiple cams perform tapping, which easily leads to errors between cams, or only vibrates without rotating. The non-rotating tap density meter is prone to tilting the upper surface of the sample after tapping, which seriously affects the measurement accuracy. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the problem to be solved by the present invention is to provide a tap density meter which can effectively solve the error generated between cams when using multiple cams and improve the test accuracy.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The present invention provides a tap density meter, comprising a support plate, an annular cam, a tap base plate and N tap assemblies, wherein the annular cam is mounted on the support plate, the annular cam is connected to an input end of a transmission mechanism through a main shaft, the output ends of the transmission mechanism are respectively connected to corresponding tap assemblies, the tap assemblies are mounted on the tap base plate, the tap base plate is mounted above the support plate through a plurality of base plate pillars, and a measuring cylinder is mounted on the upper end of the tap assemblies.

[0007] The transmission mechanism includes a main shaft, a small gear, N large gears and a lower attached plate, wherein the main shaft end extends into the bottom of the support plate through a lower bearing and is connected to the drive motor through a synchronous transmission device. An annular cam is fixedly installed on the main shaft, and a small gear is fixedly installed on the upper end of the main shaft. N large gears surround the small gear and mesh with it. A rotating drive sleeve is installed above the axis of each large gear. The upper and lower ends of the rotating drive sleeve are supported between the vibration base plate and the lower attached plate by the large gear upper bearing, the large gear lower bearing and the large gear lower bearing pressure cover respectively. The vibration base plate and the lower attached plate are supported by the attached plate pillar.

[0008] N vibration components have the same structure, and each vibration component includes a guide rod, a guide sleeve and a measuring cylinder, wherein the guide sleeve is installed on the vibration base plate, the guide rod is equipped with a pin, the bottom end of the guide rod passes through the guide sleeve and simultaneously passes through the rotating drive sleeve to abut against the upper edge of the annular cam, and the rotating drive sleeve and the guide rod are fixedly connected by the pin; the reducing part in the middle of the guide rod is a vibration hammer, and the vibration hammer is arranged in the guide sleeve; a pressure cover is provided on the guide sleeve; a measuring cylinder fixing seat is fixedly connected to the upper end of the guide rod, and the measuring cylinder is fixedly installed on the guide rod through the measuring cylinder fixing seat.

[0009] The annular cam is in the shape of an annular column with a bottom surface, and the upper edge of the annular column is provided with 1-2 landing points which are symmetrically arranged with the axis center.

[0010] N is 1 to 6.

[0011] The present invention has the following beneficial effects and advantages:

[0012] 1. The present invention realizes that one motor drives one annular cam to rotate, and one annular cam drives one or more workstations to vibrate, thereby solving the error generated between cams when multiple cams are used and improving the measurement accuracy of the tap density meter.

[0013] 2. The present invention drives one or more stations to lift upward and freely fall through a motor and a cam, while rotating around the axis of the measuring cylinder itself, thereby avoiding the phenomenon of the upper surface of the sample tilting after compaction in the previous non-rotating compaction density meter, and further improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic structural diagram of the tap density meter of the present invention;

[0015] Figure 2 It is a schematic diagram of the installation structure of the measuring cylinder in the present invention.

[0016] Among them, 1 is a guide rod, 101 is a vibrating hammer, 2 is a pressure cover, 3 is a pin, 4 is a guide sleeve, 5 is a vibrating substrate, 6 is an upper bearing of a large gear, 7 is a rotating drive sleeve, 8 is a large gear, 9 is a lower bearing of a large gear, 10 is an attached plate support, 11 is a lower attached plate, 12 is a pressure cover for the lower bearing of the large gear, 13 is a substrate support, 14 is a small gear, 15 is an annular cam, 16 is a lower bearing of the main shaft, 17 is a support plate, 18 is a support plate support, 19 is a first synchronous wheel, 20 is a synchronous belt, 21 is a second synchronous wheel, 22 is a main shaft, 23 is a driving motor, 24 is a bearing on the main shaft, 25 is a measuring cylinder fixing seat, and 26 is a measuring cylinder. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] like Figure 1As shown, the present invention provides a vibration density meter, including a support plate 17, an annular cam 15, a vibration substrate 5 and N vibration components, wherein the annular cam 15 is installed on the support plate 17, the annular cam 15 is connected to the input end of the transmission mechanism through a main shaft, the output end of the transmission mechanism is respectively connected to the corresponding vibration components, the vibration components are installed on the vibration substrate 5, and the vibration substrate 5 is installed above the support plate 17 through a plurality of substrate pillars 13.

[0019] N is 1 to 6, and in this embodiment it is 3, that is, 3 groups of vibration components are used.

[0020] The transmission mechanism includes a main shaft 22, a pinion 14, N large gears 8 and a lower attached plate 11, wherein the bottom end of the main shaft 22 extends into the bottom of the support plate 17 through a lower bearing and is connected to the drive motor through a synchronous transmission device. An annular cam 15 is fixedly mounted on the main shaft 22, and a pinion 14 is fixedly mounted on the upper end of the main shaft 22. N large gears 8 surround the pinion 14 and mesh with it. A rotating drive sleeve 7 is installed above the axis of each large gear 8. The upper and lower ends of the rotating drive sleeve 7 are supported between the vibration base plate 5 and the lower attached plate 11 by the large gear upper bearing 6, the large gear lower bearing 9 and the large gear lower bearing pressure cover 12 respectively. The vibration base plate 5 and the lower attached plate 11 are supported by the attached plate pillar support 10.

[0021] The N vibration components have the same structure, and each vibration component includes a guide rod 1, a guide sleeve 4 and a vibration hammer 101, wherein the guide sleeve 4 is installed on the vibration substrate 5, and a pin 3 is installed on the guide rod 1. The bottom end of the guide rod 1 passes through the guide sleeve 4 and at the same time passes through the rotation drive sleeve 7 to abut against the upper edge of the annular cam 15. The rotation drive sleeve 7 and the guide rod 1 are fixedly connected through the pin 3; the middle diameter reducing part of the guide rod 1 is a vibration hammer 101, and the vibration hammer 101 is arranged in the guide sleeve 4; a pressure cover 2 is provided on the guide sleeve 4; a measuring cylinder fixing seat 25 is fixedly connected to the upper end of the guide rod 1, and a measuring cylinder 26 is fixedly installed on the guide rod 1 through the measuring cylinder fixing seat 25, such as Figure 2 shown.

[0022] The annular cam 15 is in the shape of an annular column with a bottom surface, and the upper edge of the annular column is provided with 1 to 2 landing points which are symmetrically arranged with the axis as the center.

[0023] The working process and principle of the present invention are described as follows:

[0024] The main shaft 22 is driven to rotate by the driving motor 23 through the second synchronous wheel 21, the synchronous belt 20 and the first synchronous wheel 19, and the annular cam 15 and the pinion 14 installed on the main shaft 22 rotate together. The upper and lower ends of the main shaft 22 are supported between the vibration base plate 5 and the support plate 17 by the main shaft upper bearing 24 and the main shaft lower bearing 16 respectively. The vibration base plate 5 and the support plate 17 are supported by N base plate pillars 13. N large gears 8 surround the small gear 14 and mesh with it. The large gear 8 is equipped with a rotating drive sleeve 7. The upper and lower sides of the rotating drive sleeve 7 are supported between the vibration base plate 5 and the lower bearing 12 by the large gear upper bearing 6, the large gear lower bearing 9 and the large gear lower bearing pressure cover 12. Between the attached plates 11, the compaction base plate 5 and the lower attached plate 11 are supported by the attached plate pillars 10, the guide sleeve 4 is installed on the compaction base plate 5, and the guide rod 1 is equipped with a pin 3. The guide rod 1 passes through the guide sleeve 4 installed on the compaction base plate 5, and at the same time passes through the rotating drive sleeve 7, the rotating drive sleeve 7 rotates, and drives the guide rod 1 to rotate through the pin 3. At the same time, the convex edge on the annular cam 15 runs to the bottom of each workstation and can drive the guide rod 1 to climb and move upward along the slope angle of the convex edge. When the guide rod 1 reaches the landing position and disengages from the annular cam 15, the guide rod 1 performs a free fall action, so that the vibration hammer 101 falls on the compaction base plate 5, driving the measuring cylinder 26 fixedly installed on the upper end of the guide rod 1 to achieve compaction.

[0025] When the number of landing points of the cam 15 is fixed, the vibration frequency is controlled by the rotation speed of the drive motor 23 .

[0026] The present invention realizes that one motor drives one annular cam to rotate, one annular cam drives one to three or more workstations to vibrate, and at the same time drives one to three or more workstations to rotate around its own axis, so there is no error between cams when multiple cams are used; while vibrating, the measuring cylinder rotates around its own axis, which solves the problem of sample upper surface tilt in the previous non-rotational measurement method and improves the measurement accuracy.

Claims

1. A tap density meter, characterized in that: It includes a support plate, an annular cam, a vibration substrate and N vibration components, wherein the annular cam is installed on the support plate, the annular cam is connected to the input end of the transmission mechanism through a main shaft, the output end of the transmission mechanism is respectively connected to the corresponding vibration components, the vibration components are installed on the vibration substrate, the vibration substrate is installed above the support plate through a plurality of substrate pillars, and the measuring cylinder is installed on the upper end of the vibration component; The transmission mechanism includes a main shaft, a pinion, N large gears and a lower attached plate, wherein the main shaft end extends into the bottom of the support plate through a lower bearing and is connected to the drive motor through a synchronous transmission device, an annular cam is fixedly installed on the main shaft, a pinion is fixedly installed on the upper end of the main shaft, N large gears surround the pinion and mesh, a rotating drive sleeve is installed above the axis of each large gear, and the upper and lower ends of the rotating drive sleeve are supported between the vibration base plate and the lower attached plate by the upper bearing of the large gear, the lower bearing of the large gear and the gland of the lower bearing of the large gear respectively, and the vibration base plate and the lower attached plate are supported by the attached plate pillars; N vibration components have the same structure, and each vibration component includes a guide rod, a guide sleeve and a measuring cylinder, wherein the guide sleeve is installed on the vibration base plate, the guide rod is equipped with a pin, the bottom end of the guide rod passes through the guide sleeve and simultaneously passes through the rotating drive sleeve to abut against the upper edge of the annular cam, and the rotating drive sleeve and the guide rod are fixedly connected by the pin; the reducing part in the middle of the guide rod is a vibration hammer, and the vibration hammer is arranged in the guide sleeve; a pressure cover is provided on the guide sleeve; a measuring cylinder fixing seat is fixedly connected to the upper end of the guide rod, and the measuring cylinder is fixedly installed on the guide rod through the measuring cylinder fixing seat.

2. The tap density meter according to claim 1, characterized in that: The annular cam is in the shape of an annular cylinder with a bottom surface, and the upper edge of the annular cylinder is provided with 1 to 2 landing points which are symmetrically arranged with the axis center.

3. The tap density meter according to claim 1, characterized in that: N is 1~6.

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