Paper bursting strength detection device

Abstract

The utility model belongs to the technical field of paper material detection, and particularly discloses a paper bursting strength detection device which comprises an equipment body, an air inlet pipe, an insertion pipe and a lantern ring, the outer end of the air inlet pipe is fixedly connected with a baffle ring and a first thread, the first thread is arranged on the axial inner side of the baffle ring, and a slot is formed in the baffle ring; a sealing ring is mounted on the insertion pipe and / or the air inlet pipe, an insertion block is fixedly connected to the outer side of the insertion pipe, the insertion block is matched and inserted with the insertion groove, the insertion groove is communicated with an inner hole of the baffle ring, and the insertion block extends linearly in the radial direction; a rotating groove is formed in the inner side face of the lantern ring and sleeves the outer side face of the baffle ring, insertion openings communicating with the rotating groove are symmetrically formed in the inner wall of the end, away from the air inlet pipe, of the lantern ring, and the insertion openings are in matched insertion connection with the insertion blocks; second threads are arranged on the inner wall of the end, close to the air inlet pipe, of the lantern ring and connected with the first threads in a matched mode. The insertion pipe can be limited and prevented from rotating, the firmness of the lantern ring is improved, and the service life of the sealing ring can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of paper material detection, in particular to a paper bursting strength detection device. Background Art

[0002] The paper bursting strength tester is a special instrument for testing the bursting strength of paper. The basic principle is to clamp the sample by external force and break the sample with oil pressure. According to the different clamping methods, it can be divided into pneumatic bursting strength tester and manual bursting strength tester. The bursting strength reflects the ability of paper to withstand the force of handling, loading and unloading, impact and tearing during circulation, and is one of the evaluation methods for the comprehensive performance of paper.

[0003] A Chinese utility model patent with publication number CN215894228U discloses a paper bursting strength tester, including a bursting strength tester. In the utility model, the insert block is further limited in the annular groove with the assistance of a contraction spring and a limit plate, so that the insert tube can be installed on the input tube to avoid the detachment of the insert tube, thereby enabling the device to be used normally, and indirectly improving the accuracy of the instrument detection.

[0004] The device in the above patent, by providing a contraction spring and a limit plate to clamp the plug block, makes it difficult for the cannula to fall off after being inserted into the interior of the ring. However, since the pipeline for conveying compressed gas is usually made of rubber material with a certain elasticity, when the cannula is inserted into the interior of the ring and rotated to make the plug block away from the notch, the cannula may slowly rotate in the opposite direction due to the elasticity of the cannula itself, causing the plug block to return to the position where the notch is located, which may cause the cannula to fall out. In addition, the rotation process of the cannula will cause sliding friction between the first sealing ring and the second sealing ring, causing the sealing ring to be worn faster, thereby affecting the service life of the sealing ring. Utility Model Content

[0005] Aiming at the problem that the insertion tube of the paper bursting strength tester in the prior art will cause sliding friction between the first sealing ring and the second sealing ring during the rotation process, making the sealing ring wear faster, thereby affecting the service life of the sealing ring, a paper bursting strength test device is now proposed. The utility model provides the following technical solutions:

[0006] A paper bursting strength testing device comprises a device body for testing the bursting strength of paper, an air inlet pipe, an insert pipe and a collar, wherein the device body is a pneumatic bursting strength tester, an air charging pipe for charging a cylinder is arranged in the device body, and the air inlet pipe is connected to the air charging pipe and fixedly connected to the outside of the device body;

[0007] The outer end of the air inlet pipe is fixedly connected with a retaining ring and a first thread, the first thread is arranged on the axial inner side of the retaining ring, and the retaining ring is provided with a slot;

[0008] The outer side of the cannula is plugged in with the inner side of the air inlet pipe, and a sealing ring is installed on the outer side of the cannula and / or the inner side of the air inlet pipe. An insert block is fixedly connected to the outer side of the cannula, and the insert block is plugged in with the slot;

[0009] The inner side of the collar is provided with a rotation groove, the rotation groove is sleeved on the outer side of the retaining ring, and the inner wall of the collar away from the end of the air inlet pipe is symmetrically provided with a socket connected with the rotation groove, and the socket is plugged with the plug block;

[0010] The inner wall of the collar close to one end of the air inlet pipe is provided with a second thread, and the second thread is matched and connected with the first thread.

[0011] Preferably, the thickness of the insert block in the axial direction is greater than the depth of the slot, and after the second thread is matched and connected with the first thread, the collar is pressed and connected to the insert block.

[0012] Preferably, a ramp groove is provided at one end of the rotating groove toward the socket, and after the collar is tightened, the ramp groove abuts against the plug block, and the plug block moves toward the slot of the air intake pipe, and finally the ramp groove presses the plug block.

[0013] Preferably, two ramp-shaped grooves are provided and are distributed in a circular array around the axis of the air intake pipe.

[0014] Preferably, the number of thread turns of the second thread is less than one third of a turn.

[0015] Preferably, the threads of the second thread are arranged axially side by side.

[0016] Preferably, the inner wall of the air inlet pipe is provided with a first sealing ring, the outer wall of the insert pipe is embedded with a second sealing ring, and the first sealing ring and the second sealing ring are frictionally sleeve-connected.

[0017] Preferably, the slot is communicated with the inner hole of the retaining ring, and the insert block is radially extended in a straight line.

[0018] Preferably, there are two of each of the plug block, the socket and the slot.

[0019] Preferably, the plug blocks, sockets and slots are all arranged at equal intervals in the circumferential direction.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] 1. Align the plug block with the socket and the slot in turn, insert the cannula into the air inlet pipe, and place the plug block in the slot. Then, the second thread is threadedly connected with the first thread to limit the axial movement of the plug block through the collar, thereby fixing the plug block and limiting the cannula to prevent the cannula from rotating. The twisted force of the cannula is prevented from pushing the cannula to rotate, causing the collar to loosen, and causing the sealing ring to slide, so as to extend the service life of the sealing ring.

[0022] 2. The thickness of the plug block in the axial direction is greater than the depth of the slot. After the second thread is matched with the first thread, the collar is pressed and connected to the plug block. A ramp groove is provided at one end of the rotating groove toward the socket. After the collar is tightened, the ramp groove abuts against the plug block, and the plug block moves toward the slot of the intake pipe. Finally, the ramp groove presses the plug block, which can tighten the plug block and prevent the plug block from axial movement or rotation, thereby greatly reducing the possibility of distortion of the plug pipe.

[0023] 3. A first sealing ring is arranged on the inner wall of the air inlet pipe, and a second sealing ring is embedded in the outer wall of the insert pipe. The first sealing ring and the second sealing ring are connected by friction sleeve, thereby improving the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 It is a partial structural schematic diagram of the utility model;

[0026] Figure 3 It is a partial cross-sectional structural schematic diagram of the utility model;

[0027] In the attached drawings, 1, equipment body; 2, air inlet pipe; 21, retaining ring; 22, slot; 23, first thread; 24, first sealing ring; 3, insert; 31, insert block; 32, second sealing ring; 4, collar; 41, rotating groove; 42, socket; 43, sloped groove; 44, second thread. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. The directional words mentioned in the following embodiments, such as "up", "down", "left" and "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional words used are used to illustrate rather than limit the creation of the present invention.

[0029] like Figure 1-3 As shown, a paper bursting strength testing device comprises a device body 1 for testing the bursting strength of paper, an air inlet pipe 2, an insert pipe 3 and a collar 4, wherein the device body 1 is a pneumatic bursting strength tester, and an air charging pipe for charging a cylinder is arranged in the device body 1, and the air inlet pipe 2 is connected to the air charging pipe and fixedly connected to the outside of the device body 1;

[0030] The outer end of the air inlet pipe 2 is fixedly connected with a retaining ring 21 and a first thread 23, wherein the first thread 23 is arranged on the axial inner side of the retaining ring 21, and a slot 22 is arranged on the retaining ring 21;

[0031] The outer side of the insert tube 3 is plugged with the inner side of the air inlet pipe 2, and a sealing ring is installed on the outer side of the insert tube 3 and / or the inner side of the air inlet pipe 2. An insert block 31 is fixedly connected to the outer side of the insert tube 3, and the insert block 31 is plugged with the slot 22, and the slot 22 is connected with the inner hole of the retaining ring 21. The insert block 31 is radially extended and arranged in a straight line;

[0032] The inner side of the collar 4 is provided with a rotation groove 41, and the rotation groove 41 is sleeved on the outer side of the retaining ring 21. The inner wall of the collar 4 away from the end of the intake pipe 2 is symmetrically provided with a socket 42 connected with the rotation groove 41, and the socket 42 is plugged with the plug block 31;

[0033] The inner wall of the collar 4 close to one end of the air inlet pipe 2 is provided with a second thread 44 , and the second thread 44 is matched and connected with the first thread 23 .

[0034] Align the plug block 31 with the socket 42 and the slot 22 in sequence, insert the cannula 3 into the air inlet pipe 2, and place the plug block 31 in the slot 22. Then, the second thread 44 is threadedly connected to the first thread 23 to limit the axial movement of the plug block 31 through the collar 4, thereby fixing the plug block 31 and limiting the cannula 3 to prevent the cannula 3 from rotating. The twisting force of the cannula 3 is prevented from pushing the cannula 3 to rotate, causing the collar 4 to loosen, and causing the sealing ring to slide, thereby extending the service life of the sealing ring.

[0035] Specifically, the thickness of the plug block 31 in the axial direction is greater than the depth of the slot 22. After the second thread 44 is matched with the first thread 23, the collar 4 is pressed and connected to the plug block 31. A ramp groove 43 is provided at one end of the rotating groove 41 toward the socket 42. After tightening the collar 4, the ramp groove 43 abuts against the plug block 31, and the plug block 31 moves toward the slot 22 of the intake pipe 2. Finally, the ramp groove 43 presses the plug block 31, which can tighten the plug block 31 and prevent the plug block 31 from axial movement or rotation, thereby greatly reducing the possibility of distortion of the insert pipe 3.

[0036] Specifically, the number of thread turns of the second thread 44 is less than one-third of a turn; the thread turns of the second thread 44 are axially arranged in parallel, which can improve the convenience of threaded connection.

[0037] Specifically, the inner wall of the air inlet pipe 2 is provided with a first sealing ring 24, and the outer wall of the insert pipe 3 is embedded with a second sealing ring 32. The first sealing ring 24 and the second sealing ring 32 are frictionally sleeved and connected, thereby improving the sealing performance.

[0038] Specifically, two ramp-shaped grooves 43 are provided, and are distributed in a circular array around the axis of the air intake pipe 2; two of the plug block 31, the socket 42, and the slot 22 are each provided; the plug block 31, the socket 42, and the slot 22 are each arranged at equal intervals in the circumferential direction. After the ring 4 is rotated, the ramp-shaped grooves 43 on both sides can simultaneously press the plug block 31, and the two sides of the cannula 3 can be evenly stressed through the plug block 31, thereby improving the stability of the cannula 3 and preventing the cannula 3 from deviating to the side.

Claims

1. A paper bursting strength detection device, comprising a device body (1) for detecting the bursting strength of paper, an air inlet pipe (2), an insertion pipe (3) and a sleeve ring (4), characterized in that: The device body (1) is a pneumatic bursting strength tester, and an air charging pipe for charging the cylinder is provided in the device body (1), and the air inlet pipe (2) is connected to the air charging pipe and fixedly connected to the outside of the device body (1); The outer end of the air intake pipe (2) is fixedly connected with a retaining ring (21) and a first thread (23), the first thread (23) is arranged on the axial inner side of the retaining ring (21), and the retaining ring (21) is provided with a slot (22); The outer side surface of the insert tube (3) is plugged into the inner side surface of the air inlet pipe (2), a sealing ring is installed on the outer side surface of the insert tube (3) and / or the inner side surface of the air inlet pipe (2), an insert block (31) is fixedly connected to the outer side of the insert tube (3), and the insert block (31) is plugged into the slot (22); The inner side surface of the collar (4) is provided with a rotation groove (41), the rotation groove (41) is sleeved on the outer side surface of the retaining ring (21), and the inner wall of the collar (4) at one end away from the air inlet pipe (2) is symmetrically provided with a socket (42) connected to the rotation groove (41), and the socket (42) is plugged in with the plug block (31); A second thread (44) is provided on the inner wall of the collar (4) close to one end of the air inlet pipe (2), and the second thread (44) is matched and connected with the first thread (23).

2. The paper bursting strength detection device according to claim 1, characterized in that: The thickness of the insert block (31) in the axial direction is greater than the depth of the slot (22); after the second thread (44) is matingly connected with the first thread (23), the collar (4) is pressed and connected to the insert block (31).

3. The paper bursting strength detection device according to claim 2, characterized in that: An inclined groove (43) is provided at one end of the rotating groove (41) facing the socket (42). After the collar (4) is tightened, the inclined groove (43) abuts against the plug block (31), and the plug block (31) moves toward the slot (22) of the air intake pipe (2). Finally, the inclined groove (43) presses the plug block (31).

4. The paper bursting strength detection device according to claim 3, characterized in that: Two of the ramp-shaped grooves (43) are provided and are distributed in a ring array around the axis of the air intake pipe (2).

5. The paper bursting strength detection device according to claim 1, characterized in that: The number of thread turns of the second thread (44) is less than one-third of a turn.

6. The paper bursting strength detection device according to claim 5, characterized in that: The threads of the second thread (44) are arranged axially side by side.

7. The paper bursting strength detection device according to claim 1, characterized in that: The inner wall of the air inlet pipe (2) is provided with a first sealing ring (24), the outer wall of the insertion pipe (3) is embedded with a second sealing ring (32), and the first sealing ring (24) and the second sealing ring (32) are connected by friction sleeve.

8. The paper bursting strength detection device according to claim 1, characterized in that: The slot (22) is in communication with the inner hole of the retaining ring (21), and the insert block (31) is arranged to extend radially and linearly.

9. The paper bursting strength detection device according to any one of claims 1 to 8, characterized in that: The insert block (31), the socket (42), and the slot (22) are each provided with two.

10. The paper bursting strength detection device according to claim 9, characterized in that: The insert block (31), the socket (42), and the slot (22) are all arranged at equal intervals in the circumferential direction.

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