Suction resistance testing device

Abstract

The utility model relates to the technical field of tobacco detection equipment, and provides a draw resistance testing device, which comprises a measuring cylinder, a first suction hole, a second suction hole, a first suction hole and a second suction hole, wherein a channel is arranged in the measuring cylinder, one end of the channel is used for inserting a sample to be tested, and the other end, corresponding to the channel, of the measuring cylinder is provided with a sealing end surface; the sealing mechanism comprises a sealing ring and an air bag, the sealing ring is arranged on the air bag, under the condition that the air bag is inflated, the air bag can push the sealing ring to be tightly pressed on the sealing end face, a suction cavity is defined by the measuring cylinder, the to-be-measured sample and the air bag, and the first suction hole is communicated with the suction cavity. According to the draw resistance testing device, the sealing mechanism with the air bag is arranged, the sealing ring is driven to be attached to the sealing end face of the measuring cylinder by inflating and deflating the air bag, sufficient and effective sealing of the measuring cylinder is achieved, abrasion of the sealing ring can be avoided or reduced, and the sealing performance of the testing cavity is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of tobacco detection equipment, in particular to a draw resistance testing device. Background Art

[0002] In the tobacco manufacturing industry, whether it is the production of filter rod materials or the production of finished cigarettes, multiple physical indicators of the products must be tested and monitored, and draw resistance is a very important physical indicator. During the draw resistance test, the sample is inserted into the test end of the draw resistance tester and the test cavity at the bottom is sealed. After the test is completed, the test cavity is opened and the sample is discharged from the bottom to achieve continuous testing of multiple samples.

[0003] In the related art, the test cavity is sealed and opened by moving the sealing mechanism horizontally or rotating and then moving it up and down, so as to achieve the sample resistance test and discharge the sample. However, during the sealing and opening process, the sealing ring is pushed and pulled to move relative to the fitting surface. After long-term use, the sealing ring is prone to wear, which leads to the problem of poor sealing of the test cavity and affects the test accuracy. Utility Model Content

[0004] The utility model provides a suction resistance testing device, which is used to solve the problem of poor sealing of a test cavity of a suction resistance tester in the prior art.

[0005] The utility model provides a suction resistance testing device, comprising: a measuring cylinder, wherein a channel is provided in the measuring cylinder, one end of the channel is used to insert a sample to be tested, and the other end of the measuring cylinder corresponding to the channel is provided with a sealing end face, and one side of the measuring cylinder is provided with a first suction hole; a sealing mechanism, comprising a sealing ring and an airbag, wherein the sealing ring is provided on the airbag, and when the airbag is inflated, the airbag can push the sealing ring to be pressed against the sealing end face, so that the measuring cylinder, the sample to be tested and the airbag are surrounded to form a suction cavity, and the first suction hole is communicated with the suction cavity.

[0006] According to a suction resistance testing device provided by the utility model, the sealing mechanism further comprises a mounting block, the airbag is fixed to the mounting block, and the mounting block is movable relative to the measuring cylinder so that the airbag approaches or moves away from the sealing end face.

[0007] According to a suction resistance testing device provided by the utility model, the channel is arranged along the vertical direction, the sealing end surface is arranged inclined relative to the horizontal direction, and the mounting block can move horizontally relative to the measuring cylinder.

[0008] According to a suction resistance testing device provided by the utility model, the mounting block is provided with an inclined surface, the inclined surface is facing the sealing end surface and is arranged parallel to the sealing end surface, and the airbag is arranged on the inclined surface.

[0009] According to the utility model, a resistance absorption test device further includes a driving mechanism, wherein the driving mechanism is connected to the mounting block and is used to drive the mounting block to move.

[0010] According to a suction resistance testing device provided by the utility model, the driving component is a cylinder.

[0011] According to a suction resistance testing device provided by the utility model, the sealing mechanism further comprises a sealing disk, the sealing disk is arranged on a side of the airbag close to the sealing end surface, and the sealing ring is arranged on the sealing disk.

[0012] According to a suction resistance testing device provided by the utility model, a groove is provided on the sealing disk, and the sealing ring is embedded in the groove.

[0013] According to the utility model, a suction resistance testing device is provided, which also includes: a base, the measuring cylinder is fixed to the base, and the mounting block is slidably arranged on the base.

[0014] According to the utility model, a suction resistance testing device further includes: an inflation mechanism, the airbag is provided with a pneumatic joint, and the pneumatic joint is connected to the inflation mechanism.

[0015] The suction resistance testing device provided by the utility model is provided with a sealing mechanism having an airbag, and utilizes the inflation and exhaust of the airbag to drive the sealing ring to fit with the sealing end face of the measuring tube, which not only effectively and fully seals the measuring tube, but also makes the sealing ring fit and align with the sealing end face without relative movement, which can avoid or reduce the wear of the sealing ring and improve the sealing performance of the test cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of the absorption resistance testing device provided by the utility model.

[0018] Reference numerals:

[0019] 1. Measuring tube; 11. Channel; 12. First suction hole; 13. Sealing end face; 14. Suction cavity; 15. First suction joint; 16. Hose core; 17. Second suction hole; 18. Second suction joint; 2. Sealing mechanism; 21. Sealing ring; 22. Airbag; 221. Pneumatic joint; 23. Mounting block; 231. Inclined surface; 24. Sealing disk; 241. Groove; 3. Sample to be tested; 4. Driving mechanism; 5. Base. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "first" and "second" are for the purpose of clearly explaining the numbering of product components and do not represent any substantial difference. The directions of "up", "down", "left" and "right" shall be based on the directions shown in the accompanying drawings. The terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to the specific circumstances. In the specification and claims, "and / or" means at least one of the connected objects, and the character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0022] Combine the following Figure 1 The utility model is described in detail.

[0023] like Figure 1As shown, the suction resistance testing device provided by the utility model includes a measuring tube 1 and a sealing mechanism 2. A channel 11 is provided in the measuring tube 1, one end of the channel 11 is used to insert the sample 3 to be tested, and a sealing end face 13 is provided at the other end of the measuring tube 1 corresponding to the channel 11. A first suction hole 12 is provided on one side of the measuring tube 1. The sealing mechanism 2 includes a sealing ring 21 and an airbag 22, and the sealing ring 21 is arranged on the airbag 22. When the airbag 22 is inflated, the airbag 22 can push the sealing ring 21 to be pressed against the sealing end face 13, so that the measuring tube 1, the sample 3 to be tested and the airbag 22 are surrounded to form a suction cavity 14, and the first suction hole 12 is connected to the suction cavity 14. Among them, the airbag 22 can be connected to the inflation mechanism, and the airbag 22 is inflated by the inflation mechanism. The sealing ring 21 is an O-ring, which can seal the channel opening.

[0024] Optionally, the first suction hole 12 is connected to a first suction connector 15. The first suction connector 15 is used to connect a first suction mechanism. The first suction mechanism is a constant flow vacuum source, which is used to perform constant flow suction on the suction cavity 14. The ground suction resistance testing device provided in this embodiment may include the first suction mechanism.

[0025] Optionally, a hose core 16 is provided in the channel 11, and the hose core 16 is used to insert the sample 3 to be tested. A second suction hole 17 is provided on one side of the measuring tube 1, and the second suction hole 17 is connected to the hose core 16, and the second suction hole 17 is connected to a second suction joint 18. Among them, the hose core 16 is a hollow structure, which is arranged in a ring shape on the side wall of the channel 11. The second suction joint 18 is used to connect a second suction mechanism to realize the vacuuming of the hose core 16, and to realize the opening and tightening of the hose core 16. The ground suction resistance testing device provided in this embodiment may include the second suction mechanism.

[0026] When conducting the suction resistance test, the hose core 16 is evacuated by the second suction mechanism, and the hose inside the hose core is adsorbed to the side wall. At this time, the sample 3 to be tested is inserted into the hose core 16. Then the vacuum is disconnected by the first suction mechanism, and the hose inside the hose core 16 returns to its original state, completing the tightening action of the hose. At this time, the hose core 16 will tighten and wrap the sample. Then, by inflating the airbag 22, the airbag 22 is extended, and at the same time, the sealing ring 21 is driven to be close to the sealing end face 13 to achieve the sealing of the sealing end face 13. The measuring tube 1, the sample 3 to be tested and the airbag 22 are surrounded to form a sealed suction cavity 14, that is, the test cavity. Finally, the suction cavity 14 is subjected to constant current suction by the first suction mechanism to complete the test.

[0027] The absorption resistance testing device provided by the embodiment of the utility model is provided with a sealing mechanism 2 having an airbag 22, and utilizes the inflation and exhaust of the airbag 22 to drive the sealing ring 21 to fit with the sealing end face 13 of the measuring tube 1, which not only effectively seals the measuring tube 1, but also makes the sealing ring 21 fit and align with the sealing end face 13 without relative movement, which can avoid or reduce the wear of the sealing ring 21 and improve the sealing performance of the test cavity.

[0028] The channel 11 is arranged in the vertical direction, with the upper end being the channel entrance and the lower end being the channel exit. After completing the test of a sample, the inflation mechanism stops inflating the airbag 22, causing the airbag 22 to retract and drive the sealing ring 21 away from the sealing end surface 13, thereby opening the channel 11 and preventing the airbag 22 from blocking the channel exit. Then, the second suction mechanism vacuumizes the hose core 16, allowing the sample to fall freely from the measuring cylinder 1 to achieve sample discharge, thereby achieving continuous measurement of multiple samples.

[0029] Furthermore, the sealing mechanism 2 in the absorption resistance testing device provided by the utility model also includes a mounting block 23, the airbag 22 is fixed to the mounting block 23, and the mounting block 23 is movable relative to the measuring tube 1, so that the airbag 22 is close to or away from the sealing end face 13. Among them, the mounting block 23 is used to fix the airbag 22 and drive the airbag 22 to move back and forth, so as to achieve long-distance movement of the airbag 22 relative to the sealing end face 13. After completing the sample test, the airbag 22 is driven by the mounting block 23 to leave the sealing end face 13 at a long distance, thereby avoiding the airbag 22 and the mounting block 23 from blocking the channel outlet, so that the sample can fall out of the measuring tube 1 smoothly.

[0030] The draw resistance testing device provided in this embodiment can shake off the tobacco on the sealing ring 21 during the reciprocating movement and / or telescopic movement of the airbag 22, thereby preventing the sealing end surface 13 from being clamped by tobacco and causing poor sealing.

[0031] Furthermore, the absorption resistance testing device provided by the present invention further includes a driving mechanism 4, which is connected to the mounting block 23 and is used to drive the mounting block 23 to move. The driving mechanism 4 is a linear driving mechanism such as a cylinder or a linear driving motor.

[0032] In the embodiment of the utility model, the mounting block 23 can drive the airbag 22 to move in the vertical direction, can also drive the airbag 22 to move in the horizontal direction, and can also drive the airbag 22 to move in a direction inclined relative to the horizontal direction. This embodiment does not make specific limitations on this and can be adjusted according to the specific structure.

[0033] In an optional embodiment, the channel 11 is arranged in the vertical direction, the sealing end surface 13 is arranged to be inclined relative to the horizontal direction, and the mounting block 23 can move horizontally relative to the measuring cylinder 1, such as Figure 1The moving direction is shown. When the sealing end face 13 needs to be sealed, the mounting block 23 moves to the left for a certain distance, and then the airbag 22 is inflated to complete the sealing of the sealing end face 13. When the sealing end face 13 needs to be opened, the airbag 22 is first de-aired and retracted, and then the mounting block 23 moves to the right to drive the airbag 22 away from the sealing end face. In this way, the sealing end face 13 can be fully opened by moving the mounting block 23 horizontally for a short distance, making the overall structure more compact.

[0034] Specifically, the mounting block 23 is provided with an inclined surface 231, which faces the sealing end surface 13 and is arranged parallel to the sealing end surface 13, and the airbag 22 is arranged on the inclined surface 231. The airbag 22 is a universal airbag, which is laid flat on the inclined surface 231. Figure 1 As shown, the airbag 22 can expand and contract in a direction perpendicular to the inclined surface 231 during inflation and deflation, thereby largely avoiding friction caused by relative movement between the sealing ring 21 and the sealing end surface 13 during the movement of the sealing ring 21 driven by the expansion and contraction of the airbag 22.

[0035] The sealing mechanism 2 in the absorption resistance testing device provided by the utility model further includes a sealing disk 24, which is arranged on one side of the airbag 22 close to the sealing end surface 13, and the sealing ring 21 is arranged on the sealing disk 24. The sealing disk 24 can be directly fixedly connected to the outer surface of the airbag 22, or fixedly connected to the airbag 22 through an intermediate connecting piece.

[0036] The sealing disk 24 is a hard structure, and has a flat side facing the sealing end face 13. The sealing ring 21 is arranged on the sealing disk 24, which can ensure the flatness of the sealing ring 21. When the airbag 22 is inflated and extended, the side of the sealing disk 24 facing the sealing end face 13 is flush with the sealing end face 13, and the sealing ring 21 can be pressed against the sealing end face 13 by the sealing disk 24, thereby ensuring the sealing performance.

[0037] Furthermore, the sealing disk 24 is provided with a groove 241, and the sealing ring 21 is embedded in the groove 241. Specifically, the sealing ring 21 is an O-ring, and the groove 241 is a circular groove adapted thereto, and the sealing ring 21 is embedded in the groove. Optionally, the opening size of the groove 241 is smaller than the bottom size of the groove, so that the sealing ring 21 is not easy to fall off from the groove 241.

[0038] The absorption resistance test device provided by the utility model also includes a base 5, the measuring cylinder 1 is fixed to the base 5, and the mounting block 23 is slidably arranged on the base 5. Among them, a slide rail is provided on the base 5, and the mounting block 23 is slidably arranged on the slide rail. The driving mechanism 4 is connected to the mounting block 23 and is used to drive the mounting block 23 to move along the slide rail.

[0039] Specifically, the measuring tube 1 and the channel 11 therein are arranged in a vertical direction, the sealing end surface 13 is arranged at the lower end of the measuring tube 1, and the sealing end surface 13 is arranged obliquely downward. The slide rail is arranged in a horizontal direction, and the driving mechanism 4 drives the mounting block 23 to move horizontally to drive the airbag 22 to approach or move away from the sealing end surface 13.

[0040] The suction resistance testing device provided by the embodiment of the utility model further includes an inflation mechanism (not shown in the figure), and the airbag 22 is provided with a pneumatic joint 221, and the pneumatic joint 221 is connected to the inflation mechanism. When the inflation mechanism is started to inflate the airbag 22, the airbag 22 extends to push the sealing ring 21 to press against the sealing end surface 13. When the inflation mechanism is cut off to inflate the airbag 22, the airbag 22 retracts to drive the sealing ring 21 to separate from the sealing end surface 13.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A suction resistance testing device, characterized in that: include: A measuring cylinder, wherein a channel is provided in the measuring cylinder, one end of the channel is used to insert the sample to be measured, the other end of the measuring cylinder corresponding to the channel is provided with a sealing end surface, and one side of the measuring cylinder is provided with a first suction hole; The sealing mechanism includes a sealing ring and an airbag, wherein the sealing ring is arranged on the airbag, and when the airbag is inflated, the airbag can push the sealing ring to be pressed against the sealing end surface, so that the measuring tube, the sample to be measured and the airbag are surrounded to form a suction cavity, and the first suction hole is connected to the suction cavity.

2. The absorption resistance testing device according to claim 1, characterized in that: The sealing mechanism further comprises a mounting block, the airbag is fixed to the mounting block, and the mounting block is movable relative to the measuring cylinder so that the airbag is close to or away from the sealing end surface.

3. The absorption resistance testing device according to claim 2, characterized in that: The channel is arranged along the vertical direction, the sealing end surface is arranged obliquely relative to the horizontal direction, and the mounting block can move horizontally relative to the measuring cylinder.

4. The absorption resistance testing device according to claim 3, characterized in that: The mounting block is provided with an inclined surface, the inclined surface faces the sealing end surface and is arranged parallel to the sealing end surface, and the airbag is arranged on the inclined surface.

5. The absorption resistance testing device according to claim 2, characterized in that: It also includes a driving mechanism, which is connected to the mounting block and is used to drive the mounting block to move.

6. The absorption resistance testing device according to claim 5, characterized in that: The driving mechanism is a cylinder.

7. The absorption resistance testing device according to claim 1, characterized in that: The sealing mechanism further comprises a sealing disk, which is arranged on a side of the airbag close to the sealing end surface, and the sealing ring is arranged on the sealing disk.

8. The absorption resistance testing device according to claim 7, characterized in that: The sealing disk is provided with a groove, and the sealing ring is embedded in the groove.

9. The absorption resistance testing device according to claim 2, characterized in that: Also includes: A base, the measuring cylinder is fixed on the base, and the mounting block is slidably arranged on the base.

10. The absorption resistance testing device according to claim 1, characterized in that: Also includes: An inflation mechanism, wherein the airbag is provided with a pneumatic joint, and the pneumatic joint is connected to the inflation mechanism.

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