Sampling device for hot melt adhesive production process

Abstract

The utility model discloses a sampling device for a hot melt adhesive production process, and belongs to the field of hot melt adhesive sampling. A sampling device in the hot melt adhesive production process comprises a transfer pipe and further comprises a sampling part arranged on the transfer pipe and used for sampling hot melt adhesive in the transfer pipe, the sampling part is communicated with the transfer pipe, an adjusting part is arranged on the side, close to the sampling part, of the transfer pipe, and the adjusting part is communicated with the sampling part. The sampling part can drive the adjusting part to move towards one side far away from the sampling part along the transfer pipe, and a connecting pipe is communicated between the sampling part and the adjusting part; the control part is arranged in the sampling part, and the sampling part can adjust the position of the control part and is used for releasing pressure of the sampling part; the backflow part is arranged on the sampling part and is used for temporarily storing the hot melt adhesive in the sampling part; the hot melt adhesive sampling and detecting device can solve the problems that the hot melt adhesive sampling and detecting process is tedious, the sampling efficiency is low, and hot melt adhesive waste is easily caused.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt adhesive sampling, in particular to a hot melt adhesive production process sampling device. Background Art

[0002] As an important adhesive widely used in industries, households and handicrafts, the quality and performance of hot melt adhesive are of vital importance to users. In order to ensure the quality and safety of hot melt adhesive, it is necessary to sample and test the hot melt adhesive in a fluid state after filtration, mainly by observing the appearance of the hot melt adhesive to preliminarily judge whether there are quality problems such as impurities and foreign matter, as well as the viscosity and melt index of the hot melt adhesive.

[0003] Currently, for sampling of hot melt adhesive, the filtered hot melt adhesive is first placed in a designated container, and after sampling and testing, the tested hot melt adhesive is added to an extruder. The adhesive strips extruded by the extruder enter a cooling water tank for cooling, and finally are cut into strips by a cutting machine. The existing hot melt adhesive sampling and testing process is cumbersome, the sampling efficiency is low, and it is easy to cause waste of hot melt adhesive. Utility Model Content

[0004] The utility model aims to solve the problems in the prior art that the hot melt adhesive sampling and detection process is complicated, the sampling efficiency is low, and the hot melt adhesive is easily wasted, and proposes a hot melt adhesive production process sampling device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A hot melt adhesive production process sampling device includes a transfer tube, and also includes: a sampling part arranged on the transfer tube, used to sample the hot melt adhesive in the transfer tube, wherein the sampling part is connected to the transfer tube, and an adjustment part is arranged on the side of the transfer tube close to the sampling part, and the sampling part can drive the adjustment part to move along the transfer tube to the side away from the sampling part, and a connecting tube is connected between the sampling part and the adjustment part; a control part is arranged in the sampling part, and the sampling part can adjust the position of the control part to relieve the pressure of the sampling part; a reflux part arranged on the sampling part is used for temporarily storing the hot melt adhesive in the sampling part.

[0007] In order to facilitate the sampling of hot melt adhesive during the production process, preferably, the sampling part includes a sampling tube fixedly connected to the transfer tube, the interior of the sampling tube is slidably connected to a pull rod, and the pull rod is fixedly connected to a piston at one end close to the transfer tube, wherein the sampling tube is connected to the transfer tube, the pull rod at least partially extends to the outside of the sampling tube, and the piston is tightly fitted against the inner wall of the sampling tube.

[0008] In order to ensure the stability during the hot melt adhesive sampling process and to ensure the stability of the sampling amount, the adjustment part further includes an installation frame fixedly connected to the side of the transfer tube close to the sampling tube, a slider is slidably connected inside the installation frame, a first spring is fixedly connected between the slider and the inner wall of the installation frame, and a baffle is fixedly connected to the side of the slider away from the first spring, wherein the installation frame is at least partially connected to the side of the sampling tube close to the transfer tube, the slider is tightly fitted to the inner wall of the installation frame, and the baffle is tightly fitted to the side wall of the sampling tube.

[0009] In order to ensure the stability of hot melt adhesive production, the control unit further includes an air bleed hole opened at the top of the sampling tube, the air bleed hole is slidably connected to a plug inside, a connecting rod is fixedly connected to the side of the plug close to the sampling tube, a pressure plate is fixedly connected to the end of the connecting rod away from the plug, a second spring is fixedly connected between the pressure plate and the inner wall of the sampling tube, wherein the size of the connecting rod is smaller than the size of the air bleed hole, and the second spring is sleeved on the connecting rod.

[0010] In order to reduce waste during the hot melt adhesive sampling process, the reflux part further includes a plurality of return holes opened on the piston, the interior of the return hole is fixedly connected with a fixed plate, the side of the fixed plate away from the transfer tube is fixedly connected with a telescopic rod, the end of the telescopic rod away from the fixed plate is fixedly connected with a wedge block, and the wedge block fits tightly with the return hole.

[0011] In order to ensure the stability of the movement of the baffle, further, one end of the connecting tube is connected to the upper side wall of the sampling tube, the other end of the connecting tube is connected to the installation frame, and the end of the connecting tube close to the installation frame is located between the slider and the sampling tube.

[0012] In order to facilitate the removal of sampled hot melt adhesive, the invention further includes a material collection port opened on the side wall of the sampling tube, the interior of the material collection port is slidably connected with a head, the head is tightly fitted to the inner wall of the material collection port, and the side of the head away from the sampling tube is fixedly connected with an arc plate, the arc plate matches the outer wall of the sampling tube, and the bottom of the material collection port matches the top of the piston.

[0013] In order to ensure the stability of the hot melt adhesive production process, preferably, it also includes a discharge pipe and a recovery pipe fixedly connected to one end of the transfer pipe, the discharge pipe and the recovery pipe are communicated with each other, the discharge pipe and the recovery pipe are fixedly connected with a diverter plate on one side close to the transfer pipe, the transfer pipe is fixedly connected with a sealing ring on one side close to the diverter plate, the transfer pipe is rotatably connected with an adjustment plate on one side close to the diverter plate, a knob is fixedly connected to the adjustment plate, and the knob is located on the outside of the transfer pipe.

[0014] Compared with the prior art, the utility model provides a hot melt adhesive production process sampling device, which has the following beneficial effects:

[0015] 1. The hot melt adhesive production process sampling device can sample the hot melt adhesive during the production process through the sampling part. In addition, the adjustment part can seal the sampling part before and after sampling. On the one hand, it can reduce the impact on the hot melt adhesive production efficiency, and on the other hand, it can ensure the stability of the hot melt adhesive sampling. Not only is the operation simpler, but also the efficiency of the hot melt adhesive sampling is improved.

[0016] 2. The hot melt adhesive production process sampling device can realize automatic resetting of the adjustment part by triggering the control part after the sampling part completes the hot melt adhesive sampling, thereby preventing the hot melt adhesive from falling into the transfer tube again after the sampling is completed, so as to control the stability of the hot melt adhesive sampling amount.

[0017] 3. The hot melt adhesive production process sampling device pushes the sampling part in the direction of the transfer tube. Under the action of the reflux part, the hot melt adhesive after sampling can be discharged through the material taking port. In addition, after the detection is completed, the subsequent production of the hot melt adhesive can be realized directly by adjusting the angle of the adjustment plate, which further improves the production efficiency of the hot melt adhesive and can also reduce the waste of the hot melt adhesive in the sampling process.

[0018] The parts not involved in the device are the same as the existing technology or can be implemented by using the existing technology. The utility model can overcome the problems of complicated hot melt adhesive sampling and detection process, low sampling efficiency, and easy waste of hot melt adhesive. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The utility model is a schematic diagram of the structure of a hot melt adhesive production process sampling device.

[0020] Figure 2 The utility model is a schematic diagram of the main cross-sectional structure of a hot melt adhesive production process sampling device.

[0021] Figure 3 The utility model is a top view of a cross-sectional structural diagram of a hot melt adhesive production process sampling device.

[0022] Figure 4 A hot melt adhesive production process sampling device proposed by the utility model Figure 2 Schematic diagram of the structure of part A in .

[0023] Figure 5 A hot melt adhesive production process sampling device proposed by the utility model Figure 2 Schematic diagram of the structure of part B.

[0024] In the figure: 1. transfer tube; 2. discharge tube; 3. recovery tube; 4. sampling tube; 5. diverter plate; 6. sealing ring; 7. adjustment plate; 8. knob; 9. mounting frame; 10. slider; 11. first spring; 12. baffle; 13. pull rod; 14. piston; 15. connecting tube; 16. return hole; 17. fixing plate; 18. telescopic rod; 19. wedge block; 20. feeding port; 21. end cap; 22. arc plate; 23. vent hole; 24. plug; 25. connecting rod; 26. pressure plate; 27. second spring; 28. handle. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0027] Example:

[0028] Reference Figure 1-Figure 5 A hot melt adhesive production process sampling device includes a transfer tube 1, and also includes: a sampling part arranged on the transfer tube 1, used to sample the hot melt adhesive in the transfer tube 1, wherein the sampling part is connected to the transfer tube 1, and an adjustment part is arranged on the side of the transfer tube 1 close to the sampling part, and the sampling part can drive the adjustment part to move along the transfer tube 1 to the side away from the sampling part, and a connecting pipe 15 is connected between the sampling part and the adjustment part; a control part is arranged in the sampling part, and the sampling part can adjust the position of the control part to relieve the pressure of the sampling part; a reflux part arranged on the sampling part is used for temporarily storing the hot melt adhesive in the sampling part.

[0029] Reference Figure 1-Figure 2The sampling part includes a sampling tube 4 fixedly connected to the transfer tube 1, a pull rod 13 is slidably connected inside the sampling tube 4, and a piston 14 is fixedly connected to one end of the pull rod 13 close to the transfer tube 1, wherein the sampling tube 4 is connected to the transfer tube 1, and the pull rod 13 at least partially extends to the outside of the sampling tube 4, and the piston 14 is tightly fitted with the inner wall of the sampling tube 4. The end of the pull rod 13 away from the sampling tube 4 is fixedly connected with a handle 28, so that the staff can sample the hot melt adhesive. The connection method between the piston 14 and the inner wall of the sampling tube 4 is a conventional method in the prior art and will not be elaborated here. By moving the piston 14, the pressure in the sampling tube 4 can be changed to achieve sampling of the hot melt adhesive.

[0030] During the production process of hot melt adhesive, when it is necessary to sample and test the hot melt adhesive, the handle 28 is held and the pull rod 13 is pulled outward, or under the action of the piston 14, a negative pressure can be generated on the side of the sampling tube 4 close to the transfer tube 1, and suction is generated on the hot melt adhesive in the transfer tube 1, thereby sucking the hot melt adhesive into the sampling tube 4, and sampling of the hot melt adhesive can be achieved. Sampling can be performed without affecting the production of the hot melt adhesive, thereby greatly improving the production efficiency of the hot melt adhesive.

[0031] Reference Figure 2 The adjusting part includes a mounting frame 9 fixedly connected to the side of the transfer tube 1 close to the sampling tube 4, a slider 10 is slidably connected inside the mounting frame 9, a first spring 11 is fixedly connected between the slider 10 and the inner wall of the mounting frame 9, and a baffle 12 is fixedly connected to the side of the slider 10 away from the first spring 11, wherein the mounting frame 9 is at least partially connected to the side of the sampling tube 4 close to the transfer tube 1, the slider 10 is tightly fitted with the inner wall of the mounting frame 9, the baffle 12 is tightly fitted with the side wall of the sampling tube 4, and the slider 10 and the mounting frame 9 as well as the baffle 12 and the sampling tube 4 are tightly fitted. 4 are all sealed connections, which is a conventional means in the prior art and will not be elaborated on. In addition, under the action of the first spring 11, the baffle 12 can be tightly fitted with the inner wall of the sampling tube 4 to achieve sealing of the bottom end of the sampling tube 4 (the sealing can also be achieved by providing a groove matching the baffle 12 on the inner wall of the sampling tube 4). One end of the connecting tube 15 is connected to the upper side wall of the sampling tube 4, and the other end of the connecting tube 15 is connected to the mounting frame 9, and the end of the connecting tube 15 close to the mounting frame 9 is located between the slider 10 and the sampling tube 4.

[0032] During the normal production process of hot melt adhesive, the baffle 12 will seal the sampling tube 4 under the action of the first spring 11, so as to prevent the hot melt adhesive from entering the sampling tube 4 when no sampling is performed. When sampling the hot melt adhesive, by pulling the handle 28 upward, not only will negative pressure be generated on the side of the sampling tube 4 close to the transfer tube 1, but the gas on the side of the sampling tube 4 away from the transfer tube 1 will also be compressed, so that the gas enters the mounting frame 9, thereby pushing the slider 10 to move in the mounting frame 9. At this time, the baffle 12 will be separated from the inner wall of the sampling tube 4, so as to facilitate the hot melt adhesive to enter the sampling tube 4 and complete the sampling of the hot melt adhesive.

[0033] Reference Figure 2 and Figure 5 The control part includes an air leakage hole 23 opened at the top of the sampling tube 4, and a plug 24 is slidably connected inside the air leakage hole 23. A connecting rod 25 is fixedly connected to the side of the plug 24 close to the sampling tube 4, and a pressure plate 26 is fixedly connected to the end of the connecting rod 25 away from the plug 24. A second spring 27 is fixedly connected between the pressure plate 26 and the inner wall of the sampling tube 4, wherein the size of the connecting rod 25 is smaller than the size of the air leakage hole 23, and the second spring 27 is sleeved on the connecting rod 25. When the plug 24 is tightly fitted with the air leakage hole 23, the sampling tube 4 is in a sealed state. It should also be explained that the elastic force of the second spring 27 is greater than the elastic force of the first spring 11 to prevent the plug 24 from being separated from the air leakage hole 23 under the action of air pressure.

[0034] When the hot melt adhesive sampling is completed, that is, when the piston 14 moves to the top of the sampling tube 4, the piston 14 will contact the pressure plate 26 and drive the pressure plate 26 to move, and drive the plug 24 to separate from the bleed hole 23 through the connecting rod 25. Then the gas in the sampling tube 4 is discharged through the bleed hole 23, and the gas in the installation frame 9 is also discharged through the bleed hole 23 after passing through the connecting pipe 15. After the air pressure in the installation frame 9 is reduced, the baffle 12 will return to the initial position under the action of the first spring 11, thereby sealing the sampling tube 4. On the one hand, it can ensure the stability of the hot melt adhesive sampling amount, and on the other hand, it can prevent the production of the hot melt adhesive from being affected.

[0035] Reference Figure 2 and Figure 4 The reflux part includes a plurality of return holes 16 formed on the piston 14, a fixed plate 17 is fixedly connected to the inside of the return hole 16, a telescopic rod 18 is fixedly connected to the side of the fixed plate 17 away from the transfer tube 1, and a wedge block 19 is fixedly connected to the end of the telescopic rod 18 away from the fixed plate 17. The wedge block 19 fits tightly with the return hole 16. When the wedge block 19 is located in the return hole 16, the return hole 16 can be sealed.

[0036] When the piston 14 moves toward the sampling tube 4, the hot melt adhesive in the transfer tube 1 will be extracted first under the action of the piston 14, and the air pressure between the piston 14 and the sampling tube 4 will increase when the piston 14 moves, so that the wedge block 19 can always fit tightly with the return hole 16 to prevent the hot melt adhesive from entering between the piston 14 and the sampling tube 4 through the return hole 16 when the hot melt adhesive is extracted. When the piston 14 moves downward, since the baffle 12 and the sampling tube 4 are in a sealed state, the hot melt adhesive between the baffle 12 and the piston 14 will push the wedge block 19, and then the hot melt adhesive will enter between the piston 14 and the sampling tube 4 through the return hole 16, and the sampling amount of the hot melt adhesive each time is within a certain range, thereby ensuring the stability of the hot melt adhesive sampling amount.

[0037] Reference Figure 4 , and also includes a feeding port 20 opened on the side wall of the sampling tube 4, and a head 21 is slidably connected inside the feeding port 20, and the head 21 is tightly fitted with the inner wall of the feeding port 20. A curved plate 22 is fixedly connected to the side of the head 21 away from the sampling tube 4, and the curved plate 22 matches the outer wall of the sampling tube 4. The bottom of the feeding port 20 matches the top of the piston 14. There is a certain friction between the head 21 and the feeding port 20, and the head 21 and the feeding port 20 are connected in a sealed manner. When the head 21 is located in the feeding port 20, the curved plate 22 fits with the outer wall of the sampling tube 4.

[0038] When the hot melt adhesive sample needs to be taken out, the sealing head 21 is opened, and the hot melt adhesive between the piston 14 and the sampling tube 4 will be discharged through the material taking port 20 to facilitate the subsequent hot melt adhesive sampling.

[0039] Reference Figure 1-Figure 2 , also includes a discharge pipe 2 and a recovery pipe 3 fixedly connected to one end of the transfer pipe 1, the discharge pipe 2 and the recovery pipe 3 are connected, the discharge pipe 2 and the recovery pipe 3 are fixedly connected with a diverter plate 5 on one side close to the transfer pipe 1, the transfer pipe 1 is fixedly connected with a sealing ring 6 on one side close to the diverter plate 5, the transfer pipe 1 is rotatably connected with an adjustment plate 7 on one side close to the diverter plate 5, and a knob 8 is fixedly connected to the adjustment plate 7, and the knob 8 is located on the outside of the transfer pipe 1. It should be explained that one end of the transfer pipe 1 is connected with the hot melt adhesive filtering device, and the other end is connected with the discharge pipe 2 and the recovery pipe 3, wherein the discharge pipe 2 is connected with the extrusion device, so that the hot melt adhesive can be directly extruded during the filtration process, and the recovery pipe 3 is connected with the filtering device or the reactor. If the result of the hot melt adhesive sampling test does not meet the production standard, the hot melt adhesive can be recovered and processed.

[0040] If the hot melt adhesive sampled and tested meets the standards, the adjustment plate 7 will be rotated to the side of the recovery pipe 3. At this time, under the flow of the diverter plate 5, the filtered hot melt adhesive can directly enter the extrusion device through the discharge pipe 2 for processing, which greatly improves the production efficiency of the hot melt adhesive. If the hot melt adhesive sampled and tested does not meet the standards, the adjustment plate 7 will be rotated to the side of the discharge pipe 2. At this time, the filtered hot melt adhesive will flow back to the filtration device or the reactor through the recovery pipe 3 for secondary processing to ensure the ecological quality of the hot melt adhesive.

[0041] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A hot melt adhesive production process sampling device, comprising a transfer tube (1), characterized in that: Also includes: The sampling portion provided on the transfer tube (1) is used to sample the hot melt adhesive in the transfer tube (1). The sampling portion is connected to the transfer tube (1), an adjusting portion is arranged on a side of the transfer tube (1) close to the sampling portion, the sampling portion can drive the adjusting portion to move along the transfer tube (1) to a side away from the sampling portion, and a connecting tube (15) is connected between the sampling portion and the adjusting portion; A control unit disposed in the sampling unit, wherein the sampling unit is capable of adjusting the position of the control unit to relieve pressure on the sampling unit; The reflux portion arranged on the sampling portion is used for temporarily storing the hot melt adhesive in the sampling portion.

2. A hot melt adhesive production process sampling device according to claim 1, characterized in that: The sampling portion comprises a sampling tube (4) fixedly connected to the transfer tube (1), a pull rod (13) is slidably connected inside the sampling tube (4), and a piston (14) is fixedly connected to one end of the pull rod (13) close to the transfer tube (1). The sampling tube (4) is connected to the transfer tube (1), the pull rod (13) at least partially extends to the outside of the sampling tube (4), and the piston (14) is tightly fitted to the inner wall of the sampling tube (4).

3. A hot melt adhesive production process sampling device according to claim 2, characterized in that: The regulating part comprises a mounting frame (9) fixedly connected to a side of the transfer tube (1) close to the sampling tube (4); a slider (10) is slidably connected inside the mounting frame (9); a first spring (11) is fixedly connected between the slider (10) and the inner wall of the mounting frame (9); a baffle (12) is fixedly connected to a side of the slider (10) away from the first spring (11); The installation frame (9) is at least partially connected to a side of the sampling tube (4) close to the transfer tube (1), the slider (10) is tightly fitted to the inner wall of the installation frame (9), and the baffle (12) is tightly fitted to the side wall of the sampling tube (4).

4. A hot melt adhesive production process sampling device according to claim 2, characterized in that: The control unit comprises an air leakage hole (23) provided at the top of the sampling tube (4); a plug (24) is slidably connected to the inside of the air leakage hole (23); a connecting rod (25) is fixedly connected to a side of the plug (24) close to the sampling tube (4); a pressing plate (26) is fixedly connected to an end of the connecting rod (25) away from the plug (24); a second spring (27) is fixedly connected between the pressing plate (26) and the inner wall of the sampling tube (4); The size of the connecting rod (25) is smaller than the size of the air leakage hole (23), and the second spring (27) is sleeved on the connecting rod (25).

5. A hot melt adhesive production process sampling device according to claim 2, characterized in that: The reflux portion comprises a plurality of return holes (16) formed on the piston (14); a fixed plate (17) is fixedly connected to the inside of the return hole (16); a telescopic rod (18) is fixedly connected to the side of the fixed plate (17) away from the transfer tube (1); a wedge block (19) is fixedly connected to the end of the telescopic rod (18) away from the fixed plate (17); and the wedge block (19) is tightly fitted to the return hole (16).

6. A hot melt adhesive production process sampling device according to claim 3, characterized in that: One end of the connecting tube (15) is connected to the upper side wall of the sampling tube (4), the other end of the connecting tube (15) is connected to the mounting frame (9), and the end of the connecting tube (15) close to the mounting frame (9) is located between the slider (10) and the sampling tube (4).

7. A hot melt adhesive production process sampling device according to claim 5, characterized in that: It also includes a material taking port (20) opened on the side wall of the sampling tube (4), the inside of the material taking port (20) is slidably connected to a head (21), the head (21) is tightly fitted with the inner wall of the material taking port (20), and the side of the head (21) away from the sampling tube (4) is fixedly connected to an arc plate (22), the arc plate (22) matches the outer wall of the sampling tube (4), and the bottom of the material taking port (20) matches the top of the piston (14).

8. A hot melt adhesive production process sampling device according to claim 1, characterized in that: The transfer pipe (1) further comprises a discharge pipe (2) and a recovery pipe (3) fixedly connected to one end of the transfer pipe (1); the discharge pipe (2) and the recovery pipe (3) are connected to each other; a diverter plate (5) is fixedly connected to the side of the discharge pipe (2) and the recovery pipe (3) close to the transfer pipe (1); a sealing ring (6) is fixedly connected to the side of the transfer pipe (1) close to the diverter plate (5); an adjustment plate (7) is rotatably connected to the side of the transfer pipe (1) close to the diverter plate (5); a knob (8) is fixedly connected to the adjustment plate (7); and the knob (8) is located outside the transfer pipe (1).

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