Densitometer assembled on flow dividing pipe of extruder

Abstract

The utility model relates to the technical field of densimeters, and discloses a densimeter assembled on a flow dividing pipe of an extruder, which comprises an extrusion pipe, a flow divider is arranged at one end of the extrusion pipe, a flow guide pipe is arranged at the end part of the flow divider, an inserting pipe is arranged on the flow guide pipe, and a densimeter is arranged at one end of the inserting pipe; a lock sleeve is arranged outside the inserting pipe and is provided with a thread part a, and the density instrument is provided with a thread part b; the utility model has the following advantages: 1, the density of the fluid in the shunt tube can be conveniently detected, and the detection precision is high; 2, the probe can be shrunk through air leakage of the air valve, and the densimeter is convenient and fast to disassemble;

Description

Technical Field

[0001] The utility model relates to the technical field of density meters, in particular to a density meter assembled on a diversion pipe of an extruder. Background Art

[0002] A flow divider, also known as a diverter tube or extrusion head, is the discharge port of an extruder. Plastic extruders can blend solid plastics and other materials into a plastic fluid and transport it through a diverter tube to equipment like molding machines and injection molding machines. A densitometer uses a sensor to calculate fluid density. Fluids are fluid substances that continuously deform under any slight shear force. Densitometers are used to measure the density of fluids inside a flow divider.

[0003] Existing densitometers are usually installed in a relatively fixed manner, such as the densitometer disclosed in Chinese patent CN218974081U. The probe of this type of densitometer is short, and the accuracy of measuring flowing fluids is insufficient. In addition, the installation method of this type of densitometer is relatively fixed, which makes it difficult to disassemble and inconvenient to repair, maintain and replace the densitometer. In view of this, the inventors have made a new invention. Utility Model Content

[0004] The purpose of the utility model is to provide a density meter assembled on the diverter pipe of an extruder in view of the deficiencies of the prior art, which has the advantages of being easy to install and disassemble.

[0005] To achieve the above-mentioned purpose, the utility model provides a density meter assembled on the diverter pipe of an extruder, comprising an extrusion tube, a diverter is provided at one end of the extrusion tube, a guide tube is provided at the end of the diverter, a plug-in tube is provided on the guide tube, a density meter is provided at one end of the plug-in tube, a controller is provided in the density meter, a sensor is provided below the controller, a movable plate that can be raised and lowered is provided below the sensor, a positioning column that can extend into the sensor is provided above the movable plate, a limit plate is provided at the bottom of the sensor, an elastic member is provided between the movable plate and the limit plate, an air valve is provided in the middle of the movable plate, a detection tube that passes through the plug-in tube and extends to the inside of the guide tube is provided at one end of the air valve, an expandable probe is provided at the end of the detection tube, an air pipe is provided at the other end of the air valve, and an air pump connected to the air pipe is provided on the density meter; a locking sleeve is provided on the outside of the plug-in tube, the locking sleeve is provided with a threaded portion a, and the density meter is provided with a threaded portion b that can cooperate with the threaded portion a, and the locking sleeve can fix the density meter on the plug-in tube.

[0006] Furthermore, the plug-in tube is provided with a threaded portion c on the outside, and the locking sleeve is provided with a threaded portion d threadedly connected to the threaded portion c.

[0007] Furthermore, a limiting ring is provided on the outside of the plug-in tube.

[0008] Furthermore, a connecting ring is provided at one end of the extrusion tube, the diverter is provided with a first connecting shell movably connected to the connecting ring, and a second connecting shell detachably connected to the first connecting shell, and the guide tube is provided on the second connecting shell.

[0009] Furthermore, the second connecting shell is provided with three supporting columns, and connecting plates are provided on the supporting columns. A positioning sleeve is sleeved on the outside of the plug-in tube, and the positioning sleeve is connected to the three connecting plates.

[0010] Furthermore, a rotating ring is provided on the outside of the second connecting shell.

[0011] Preferably, a positioning ring is further provided on the outside of the second connecting shell, and a tightener for fixing the positioning ring is provided on the first connecting shell.

[0012] Furthermore, a filter is provided in the diverter.

[0013] Beneficial effects: Compared with the prior art, the utility model is a density meter assembled on the diverter pipe of an extruder, comprising an extrusion tube, a diverter provided at one end of the extrusion tube, a guide tube provided at the end of the diverter, a plug-in tube provided on the guide tube, and a density meter provided at one end of the plug-in tube; a locking sleeve is provided on the outside of the plug-in tube, the locking sleeve is provided with a threaded portion a, and the density meter is provided with a threaded portion b; the utility model has the following advantages: 1. It can facilitate the detection of the density of the fluid inside the diverter pipe with high detection accuracy; 2. The probe can be shrunk by deflating the air valve, and the disassembly of the density meter is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0015] Figure 2 This is a schematic diagram of the splitter structure of the present utility model.

[0016] Figure 3 This is a schematic diagram of the local structure of the density meter of the present utility model.

[0017] Figure 4 It is a cross-sectional schematic diagram of the density meter of the present utility model.

[0018] Figure 5 This is a schematic diagram of the external structure of the plug-in tube of the present utility model.

[0019] Reference numerals include:

[0020] Extrusion tube--1, connecting ring--11, flow diverter--2, flow guide tube--21, plug tube--22, threaded portion c--221, limiting ring--222, locking sleeve--23, threaded portion a--231, threaded portion d--232, first connecting shell--24, tensioner--241, second connecting shell--25, swivel--251, positioning ring--252, support column--26, connecting plate--261, positioning sleeve--262, filter--27, density meter--3, threaded portion b--301, controller--31, sensor--32, movable plate--33, positioning column--34, limiting plate--35, elastic member--36, air valve--37, air pipe--371, air pump--372, detection tube--38, probe--381. DETAILED DESCRIPTION

[0021] The following is combined with Figures 1 to 5 The utility model is described in detail.

[0022] The utility model discloses a density meter assembled on the diverter pipe of an extruder, comprising an extrusion pipe 1, a diverter 2 is provided at one end of the extrusion pipe 1, a guide pipe 21 is provided at the end of the diverter 2, the guide pipe 21 is made of metal and the guide pipe 21 can be externally connected to a discharge pipe, a plug-in pipe 22 is provided on the guide pipe 21, a density meter 3 is provided at one end of the plug-in pipe 22, a controller 31 is provided in the density meter 3, a sensor 32 is provided below the controller 31, a plurality of sensors 32 are provided, and the sensor 32 is in the shape of a sleeve, an electrical signal conducting component is provided inside the sensor 32, and a sensor 32 is provided below the sensor 32. A movable plate 33 that can be raised and lowered is provided on the side, a positioning column 34 that can extend into the sensor 32 is provided above the movable plate 33, a limit plate 35 is provided at the bottom of the sensor 32, an elastic member 36 is provided between the movable plate 33 and the limit plate 35, an air valve 37 is provided in the middle of the movable plate 33, one end of the air valve 37 is provided with a detection tube 38 that passes through the plug tube 22 and extends to the inside of the guide tube 21, an expandable probe 381 is provided at the end of the detection tube 38, an air pipe 371 is provided at the other end of the air valve 37, and an air pump 372 connected to the air pipe 371 is provided on the density meter 3. When the densitometer is in use, the detection tube 38 extends into the flow conduit 21. The air pump 372 inflates the interior of the detection tube 38, causing the probe 381 to expand. The expanded width of the probe 381 is then greater than the inner diameter of the plug-in tube 22. The air valve 37 then closes. The fluid flowing within the flow conduit 21 pushes against the probe 381, causing the detection tube 38 to move backward, thereby moving the movable plate 33 toward the stop plate 35. During this process, the positioning post 34 continues to extend into the sensor 32, and the elastic member 36 begins to accumulate elastic force, exerting a certain resistance on the movable plate 33. The sensor 32 senses the position of the positioning post 34 and transmits an electrical signal to the controller 31, thereby detecting the density of the fluid in the flow conduit 21. This allows for high-precision fluid density detection. A locking sleeve 23 is provided on the exterior of the plug-in tube 22. The locking sleeve 23 has a threaded portion a231. The densitometer 3 has a threaded portion b301 that mates with the threaded portion a231. The locking sleeve 23 secures the densitometer 3 to the plug-in tube 22. During disassembly, the air in the probe 381 can be released through the air valve 37 to shrink the probe 381 to a size that allows it to pass through the insertion tube 22. The locking sleeve 23 can then be unscrewed. The detection tube 38 can then be pulled out of the insertion tube 22, thereby disassembling the density meter 3. The density meter 3 is easy and quick to repair, maintain, and replace.

[0023] The plug tube 22 is provided with a threaded portion c221 on the outside, and the locking sleeve 23 is provided with a threaded portion d232 threadedly connected to the threaded portion c221. This structure can ensure a stable connection between the locking sleeve 23 and the plug tube 22, improve the stability of the density meter 3 after installation, and prevent the density meter 3 from loosening.

[0024] A limiting ring 222 is further provided on the outside of the plug-in tube 22. The limiting ring 222 is used to limit the movable position of the locking sleeve 23 to prevent the threaded portion d of the locking sleeve 23 from being disconnected from the threaded portion c221 of the plug-in tube 22.

[0025] One end of the extrusion tube 1 is provided with a connecting ring 11. The diverter 2 is provided with a first connecting shell 24 movably connected to the connecting ring 11 and a second connecting shell 25 detachably connected to the first connecting shell 24. The flow guide tube 21 is provided on the second connecting shell 25. In this solution, the diverter 2 is a rotatable split structure, and the second connecting shell 25 of different shapes and performances can be replaced according to usage requirements, providing diverse functions.

[0026] A rotating ring 251 is provided on the outside of the second connecting shell 25. A staff member can operate the rotating ring 251 to rotate the diverter 2 so as to adjust the direction of the outlet end of the flow guide pipe 21.

[0027] The second connecting shell 25 is further provided with a positioning ring 252 on the outside, and the first connecting shell 24 is provided with a tensioner 241 for securing the positioning ring 252. After the second connecting shell 25 is transferred to the first connecting shell 24, the positioning ring 252 is secured to the first connecting shell 24 by the tensioner 241, making the second connecting shell 25 easy to install and remove.

[0028] The second connecting shell 25 is provided with three support columns 26, each of which is provided with a connecting plate 261. A positioning sleeve 262 is sleeved on the outside of the plug-in tube 22, and the positioning sleeve 262 is connected to the three connecting plates 261. In this solution, the plug-in tube 22 is relatively slender and has a certain length, and the density meter 3 is relatively large. The support columns 26 secure the positioning sleeve 262, providing a strong support force for the plug-in tube 22 and preventing it from bending.

[0029] The diverter 2 is provided with a filter 27. The filter 27 is installed in the first connecting shell 24 and is used to filter impurities and particles in the fluid material flowing from the extrusion tube 1 to the diverter 2. After removing the second connecting shell 25, the filter 27 can be easily removed from the first connecting shell 24, making it convenient to clean and replace the filter 27.

[0030] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there may be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A densitometer mounted on a diverter pipe of an extruder, comprising an extrusion pipe (1), characterized in that: A diverter (2) is provided at one end of the extrusion tube (1), a flow guide tube (21) is provided at the end of the flow diverter (2), a plug-in tube (22) is provided on the flow guide tube (21), a density meter (3) is provided at one end of the plug-in tube (22), a controller (31) is provided in the density meter (3), a sensor (32) is provided below the controller (31), a movable plate (33) that can be raised and lowered is provided below the sensor (32), a positioning column (34) that can be extended into the sensor (32) is provided above the movable plate (33), and the sensor (32) is provided at one end of the flow diverter (21). (32) A limit plate (35) is provided at the bottom, an elastic member (36) is provided between the movable plate (33) and the limit plate (35), an air valve (37) is provided in the middle of the movable plate (33), one end of the air valve (37) is provided with a detection tube (38) passing through the plug tube (22) and extending to the inside of the guide tube (21), an expandable probe (381) is provided at the end of the detection tube (38), an air pipe (371) is provided at the other end of the air valve (37), and an air pump (372) connected to the air pipe (371) is provided on the density meter (3); The plug-in tube (22) is provided with a locking sleeve (23) on the outside. The locking sleeve (23) is provided with a threaded portion a (231). The density meter (3) is provided with a threaded portion b (301) that can cooperate with the threaded portion a (231). The locking sleeve (23) can fix the density meter (3) on the plug-in tube (22).

2. A density meter mounted on a manifold of an extruder according to claim 1, characterized in that: The plug-in tube (22) is provided with a threaded portion c (221) on the outside, and the lock sleeve (23) is provided with a threaded portion d (232) threadedly connected to the threaded portion c (221).

3. A density meter mounted on a manifold of an extruder according to claim 1, characterized in that: A limiting ring (222) is also provided on the outside of the plug-in tube (22).

4. A densitometer mounted on a manifold of an extruder according to claim 1, characterized in that: One end of the extrusion tube (1) is provided with a connecting ring (11), the diverter (2) is provided with a first connecting shell (24) movably connected to the connecting ring (11), and a second connecting shell (25) detachably connected to the first connecting shell (24), and the guide tube (21) is provided on the second connecting shell (25).

5. A density meter mounted on a manifold of an extruder according to claim 4, characterized in that: The second connecting shell (25) is provided with three supporting columns (26), and a connecting plate (261) is provided on the supporting columns (26). The plug-in tube (22) is externally sleeved with a positioning sleeve (262), and the positioning sleeve (262) is connected to the three connecting plates (261).

6. A density meter mounted on a manifold of an extruder according to claim 4, characterized in that: A rotating ring (251) is provided on the outside of the second connecting shell (25).

7. A densitometer mounted on a manifold of an extruder according to claim 4, characterized in that: A positioning ring (252) is further provided on the outside of the second connecting shell (25), and a tightener (241) for fixing the positioning ring (252) is provided on the first connecting shell (24).

8. A densitometer mounted on a manifold of an extruder according to any one of claims 1 to 7, characterized in that: A filter (27) is provided in the diverter (2).

Images