Dynamic sample injection sealing mechanism of rotary multi-station filling value tester

Abstract

The utility model provides a dynamic sample injection sealing mechanism of a rotary multi-station filling value tester. The dynamic sample injection sealing mechanism comprises a supporting bottom plate, a slewing mechanism, a measuring cylinder, a movable hopper and a top plate, the slewing mechanism is used for driving the measuring cylinder to do circular motion, and the bottom end of the measuring cylinder is always in sliding sealing fit with the supporting bottom plate; the movable hopper is mounted on the top plate in a dynamic lifting manner through a self-resetting mechanism; a first guide bevel edge is arranged on the outer edge of the bottom end of the movable hopper, and a second guide bevel edge is arranged on the outer edge of the top end of the measuring cylinder and used for jacking the movable hopper when the measuring cylinder horizontally gets close to the movable hopper. The dynamic sample injection sealing mechanism of the rotary multi-station filling value tester has the advantages that dynamic sample injection sealing can be realized, and sufficient sample injection of the measuring cylinder is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco performance detection. Specifically, it relates to a dynamic sample injection sealing mechanism for a rotary multi-station filling value measuring instrument. Background Art

[0002] Currently, most filling value measurements are carried out using single-station fixed-point measurement, and there are deficiencies in continuous measurement methods.

[0003] The instrument for measuring the filling value is called a filling value measuring instrument, which includes a measuring cylinder, a pressure application component, a measuring component, and a control host. The measuring cylinder is used to store materials such as tobacco shreds to be measured. The pressure application component is used to apply a specific magnitude of pressure to the measuring cylinder. The measuring component is used to measure the displacement of the pressure application component. The control host is used to read and display the measured values. Currently, the positions of these several devices are relatively fixed, forming a single-station measuring device, and continuous measurement cannot be achieved to improve the measurement efficiency.

[0004] For example, the utility model patent with the patent number CN202220784662.2 and the invention name of: A utility model for a pressure holding time synchronous timing device suitable for a tobacco filling value measuring instrument is a form of single-station measurement;

[0005] With the increasing demand for continuous measurement, there is a utility model patent with the publication number CN113834773A and the invention name of: A rapid detection device for tobacco filling value, which uses a rotary form to achieve measurement.

[0006] Currently, the multi-station measurement method in rotary form may be a means to improve the measurement efficiency. However, it is found in actual experiments that during the process of feeding materials into the measuring cylinder with the help of an external mechanism, due to the rotation requirement of the measuring cylinder, it cannot fully fit with the feeding hopper, which is likely to interfere with the movement of the measuring cylinder, and leaving a gap is likely to cause fine tobacco shreds to escape from the gap, interfering with the measurement process.

[0007] In order to solve the above existing problems, people have been seeking an ideal technical solution. Utility Model Content

[0008] The purpose of the utility model is to address the deficiencies of the prior art, and thus provide a dynamic sample injection sealing mechanism for a rotary multi-station filling value measuring instrument that can achieve dynamic sample injection sealing and ensure sufficient sample injection into the measuring cylinder.

[0009] To achieve the above purpose, the technical solution adopted by the utility model is: A dynamic sample injection sealing mechanism for a rotary multi-station filling value measuring instrument, including a support base plate, a rotary mechanism, a measuring cylinder, a movable hopper, and a top plate;

[0010] The rotary mechanism is used to drive the measuring cylinder to perform circular motion, and the bottom end of the measuring cylinder is always in sliding and sealing cooperation with the supporting bottom plate;

[0011] The movable hopper is installed on the top plate through a self-resetting mechanism and can be dynamically lifted and lowered;

[0012] A first guiding bevel edge is provided at the outer edge of the bottom end of the movable hopper, and a second guiding bevel edge is provided at the outer edge of the top end of the measuring cylinder, which is used to lift the movable hopper when the measuring cylinder approaches the movable hopper horizontally.

[0013] Based on the above, a third guiding bevel edge is provided at the inner edge of the bottom end of the movable hopper.

[0014] Based on the above, a fourth guiding bevel edge is provided at the inner edge of the top end of the measuring cylinder.

[0015] Based on the above, the diameter of the measuring cylinder is equivalent to the bottom diameter of the movable hopper, which is used to make the top end of the measuring cylinder always contact with the bottom end of the movable hopper when passing horizontally under the movable hopper.

[0016] Based on the above, the four sides of the top plate are fixed to the supporting bottom plate through vertical plates.

[0017] Based on the above, a perforation is provided at the position where the movable hopper is installed on the top plate. The self-resetting mechanism includes a plurality of bolts installed around the perforation. Step holes are provided on the outer circumference of the movable hopper corresponding to each bolt. A return spring is installed in the step hole. The return spring is sleeved on the bolt and its top end abuts against the bolt head, and the bottom end abuts against the step of the step hole. The return spring is a tension spring, which is used to drive the movable hopper to always move downward.

[0018] Based on the above, the movable hopper includes a trapezoidal ring sleeve and a hopper main body. The trapezoidal ring sleeve is snapped into the perforation. The upper edge of the trapezoidal ring sleeve is used to set the step hole and install the bolt, and the hopper main body is installed in the trapezoidal ring sleeve.

[0019] Based on the above, an annular step is provided in the trapezoidal ring sleeve. The lower edge of the hopper main body is stuck on the annular step, and the inner diameter of the hopper main body is equal to the inner diameter of the lower part of the trapezoidal ring sleeve.

[0020] The utility model has substantial features and progress compared with the prior art. Specifically, the utility model installs the hopper on the top plate and designs it as a dynamically liftable structure with a self-resetting mechanism. When the rotary mechanism drives the measuring cylinder to pass under the hopper, the hopper can be lifted, and the self-resetting mechanism provides an opposite force to the hopper during this process. The cooperation of the two can make the lower end face of the hopper and the upper end face of the measuring cylinder abut against each other, so that there is no gap at the connection, and the material will not escape from the connection during feeding, so that the material entering the measuring cylinder is consistent with the input material in weight, thereby ensuring sufficient feeding and high precision. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of the dynamic sampling sealing mechanism of the rotary multi-station filling value measuring instrument in the present utility model.

[0022] Figure 2 It is a sectional view of the dynamic sampling sealing mechanism of the rotary multi-station filling value measuring instrument in the present utility model.

[0023] Figure 3 It is a partial enlarged view of the dynamic sampling sealing mechanism of the rotary multi-station filling value measuring instrument in the present utility model.

[0024] In the figure: 1. Support bottom plate; 2. Rotary mechanism; 3. Measuring cylinder; 4. Movable hopper; 5. Top plate; 6. Self-resetting mechanism; 11. First guiding bevel edge; 12. Second guiding bevel edge; 41. Trapezoidal ring sleeve; 42. Hopper main body; 61. Bolt; 62. Step hole; 63. Return spring. Detailed Embodiment

[0025] Next, through the detailed embodiment, the technical solution of the present utility model will be further described in detail.

[0026] As Figures 1 - 3 shown, a dynamic sampling sealing mechanism of a rotary multi-station filling value measuring instrument includes a support bottom plate 1, a rotary mechanism 2, a measuring cylinder 3, a movable hopper 4 and a top plate 5.

[0027] The rotary mechanism 2 is used to drive the measuring cylinder 3 to perform a circular motion, and the bottom end of the measuring cylinder 3 is always in sliding seal cooperation with the support bottom plate 1;

[0028] The movable hopper 4 is installed on the top plate 5 through the self-resetting mechanism 6 and can be dynamically lifted and lowered;

[0029] The outer edge of the bottom end of the movable hopper 4 is provided with a first guiding bevel edge 11, and the outer edge of the top end of the measuring cylinder 3 is provided with a second guiding bevel edge 12, which is used to lift the movable hopper 4 when the measuring cylinder 3 approaches the movable hopper 4 horizontally.

[0030] In this embodiment, the four sides of the top plate 5 are fixed to the support bottom plate 1 through vertical plates.

[0031] A perforation is provided at the position where the movable hopper 4 is installed on the top plate 5. The self-resetting mechanism 6 includes a plurality of bolts 61 installed around the perforation. A step hole 62 is provided on the outer circumference of the movable hopper 3 corresponding to each bolt 61. A return spring 63 is installed in the step hole 62. The return spring 63 is sleeved on the bolt 61 and its top end abuts against the bolt head, and the bottom end abuts against the step of the step hole 62. The return spring 63 is a tension spring, which is used to always drive the movable hopper 4 to move downward.

[0032] Description of the working principle:

[0033] The slewing mechanism 2 makes a slewing motion driven by the motor. The measuring cylinder 3 is installed around the slewing mechanism 2 and is driven by the slewing mechanism 2 to make a circular motion along a set circular track. The bottom end of the measuring cylinder 3 is in sliding and sealing fit with the supporting bottom plate 1 to prevent material leakage at the bottom end of the measuring cylinder 3.

[0034] In the whole multi-station design scheme, there is a feeding station, a measuring station and a discharging station designed. This application is improved based on the feeding station.

[0035] Among them, the movable hopper 4 is installed at the feeding station and is used to input the material to be measured into the measuring cylinder 3 that rotates to this position.

[0036] When the measuring cylinder 3 rotates to the lower part of the movable hopper 4 driven by the slewing mechanism 2, first, the second guiding bevel edge 12 on the outer edge of the top end of the measuring cylinder 3 contacts the first guiding bevel edge 11 on the outer edge of the bottom end of the movable hopper 4. Since both are bevel edges, the horizontal moving thrust of the measuring cylinder 3 is converted into a vertically upward thrust through the bevel edge, pushing the movable hopper 4 up a small distance. And the return spring 63 is stretched to generate a downward pulling force during this process. Under the combined action of the thrust, the pulling force and the gravity of the movable hopper 4, the top end of the measuring cylinder 3 and the bottom end of the movable hopper 4 always abut and are in close contact. When the measuring cylinder 3 stops rotating in place, the inner hole of the movable hopper 4 and the inner cavity of the measuring cylinder 3 are aligned and conducted, and the connection is tight without gaps, so that the feeding can be carried out fully without the escape of tiny cut tobacco and other situations, improving the feeding accuracy.

[0037] After the feeding is completed, the slewing mechanism drives the measuring cylinder 3 to continue to move away from the lower part of the movable hopper 4. The movable hopper 4 moves down and returns to its original position under the action of its own weight and the spring pulling force, waiting for the arrival of the next measuring cylinder.

[0038] In other embodiments, to avoid problems such as inclination caused by assembly, a third guiding bevel edge is provided on the inner edge of the bottom end of the movable hopper. Or a fourth guiding bevel edge is provided on the inner edge of the top end of the measuring cylinder. Through the design of the internal guiding edges, the relative movement between the movable hopper and the measuring cylinder can proceed normally without being stuck by the edges and interfering with each other.

[0039] In this embodiment, to prevent interference, the diameter of the measuring cylinder 3 is equivalent to the bottom end diameter of the movable hopper 4, so that the top end of the measuring cylinder 3 always contacts the bottom end of the movable hopper 4 when passing horizontally under the movable hopper.

[0040] In this embodiment, the movable hopper 4 is designed as a split structure including a trapezoidal ring sleeve 41 and a hopper main body 42. The trapezoidal ring sleeve 41 is snapped into the perforation. The upper edge of the trapezoidal ring sleeve 41 is used to set the stepped hole 62 and install the bolt 61. The hopper main body 42 is installed in the trapezoidal ring sleeve 41. An annular step is provided in the trapezoidal ring sleeve 41. The lower edge of the hopper main body 42 is stuck on the annular step. The inner diameter of the hopper main body 42 is equal to the inner diameter of the lower part of the trapezoidal ring sleeve 41 to form a blanking channel with a unified diameter.

[0041] This split design facilitates the removal, maintenance and replacement of the hopper main body 42, while the trapezoidal ring sleeve 41 does not need to be disassembled and assembled frequently, ensuring the stability of the installation structure.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them; although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present invention or perform equivalent replacements for some technical features; without departing from the spirit of the technical solutions of the present invention, they should all be covered by the scope of the technical solutions claimed by the present invention.

Claims

1. A dynamic sample injection sealing mechanism for a rotary multi-station filling value measuring instrument, characterized in that: It includes a supporting bottom plate, a slewing mechanism, a measuring cylinder, a movable hopper and a top plate; The slewing mechanism is used to drive the measuring cylinder to perform a circular motion, and the bottom end of the measuring cylinder is always in sliding and sealing fit with the supporting bottom plate; The movable hopper is installed on the top plate through a self-resetting mechanism and can be dynamically lifted and lowered; A first guiding bevel edge is provided on the outer edge of the bottom end of the movable hopper, and a second guiding bevel edge is provided on the outer edge of the top end of the measuring cylinder, which is used to lift the movable hopper when the measuring cylinder approaches the movable hopper horizontally.

2. The dynamic sample injection sealing mechanism of the rotary multi-station filling value measuring instrument according to claim 1, characterized in that: A third guiding bevel edge is provided on the inner edge of the bottom end of the movable hopper.

3. The dynamic sample injection sealing mechanism of the rotary multi-station filling value measuring instrument according to claim 1 or 2, characterized in that: A fourth guiding bevel edge is provided on the inner edge of the top end of the measuring cylinder.

4. The dynamic sample injection sealing mechanism of the rotary multi-station filling value measuring instrument according to claim 1 or 2, characterized in that: The diameter of the measuring cylinder is equivalent to the bottom end diameter of the movable hopper, which is used to make the top end of the measuring cylinder always contact with the bottom end of the movable hopper when the top end of the measuring cylinder horizontally passes under the movable hopper.

5. The dynamic sample injection sealing mechanism of the rotary multi-station filling value measuring instrument according to claim 1 or 2, characterized in that: The four sides of the top plate are fixed to the supporting bottom plate through vertical plates.

6. The dynamic sample injection sealing mechanism of the rotary multi-station filling value measuring instrument according to claim 1 or 2, characterized in that: Perforations are provided at the position where the movable hopper is installed on the top plate. The self-resetting mechanism includes a plurality of bolts installed around the perforations. Step holes are provided on the outer periphery of the movable hopper corresponding to the bolts. A return spring is installed in the step holes. The return spring is sleeved on the bolts and its top end abuts against the bolt head, and its bottom end abuts against the step of the step hole. The return spring is a tension spring, which is used to drive the movable hopper to always move downward.

7. The dynamic sample injection sealing mechanism of the rotary multi-station filling value measuring instrument according to claim 6, characterized in that: The movable hopper includes a trapezoidal ring sleeve and a hopper main body. The trapezoidal ring sleeve is clamped into the perforation. The upper edge of the trapezoidal ring sleeve is used to set the step holes and install the bolts, and the hopper main body is installed in the trapezoidal ring sleeve.

8. The dynamic sample injection sealing mechanism of the rotary multi-station filling value measuring instrument according to claim 7, characterized in that: An annular step is provided in the trapezoidal ring sleeve, and the lower edge of the hopper main body is clamped on the annular step. The inner diameter of the hopper main body is equal to the inner diameter of the lower part of the trapezoidal ring sleeve.

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