CN219935583U

CN219935583U - EPS pre-expansion particle detection device and EPS pre-expansion system

Info

Publication number: CN219935583U
Application number: CN202321504230.2U
Authority: CN
Inventors: 彭月飞; 王军华; 杨鹏辉; 周子杰
Original assignee: Anhui Sanjeshu Coating Co ltd
Current assignee: Anhui Sanjeshu Coating Co ltd
Priority date: 2023-06-12
Filing date: 2023-06-12
Publication date: 2023-10-31
Anticipated expiration: 2033-06-12

Abstract

The utility model relates to an EPS prefoaming particle detection device and an EPS prefoaming system. The automatic discharging EPS pre-foaming device comprises a shell, wherein a quantitative cylinder is arranged in the shell, a feeding pipe is arranged on the side part of the quantitative cylinder, a feeding valve is arranged at the inlet of the feeding pipe, a discharging hole is arranged at the bottom of the quantitative cylinder, a first air-permeable mesh screen which is communicated with the quantitative cylinder and the inside of the shell is arranged at the top of the quantitative cylinder, a second air-permeable mesh screen which is communicated with the outside and the inside of the shell is arranged in the shell, a weighing cylinder positioned below the quantitative cylinder is arranged in the shell, the inside of the weighing cylinder is communicated with the inside of the shell, materials falling down from the quantitative cylinder enter the weighing cylinder, the weighing cylinder is fixed on an electronic scale, a discharging hole is arranged at the lower part of the weighing cylinder, a second discharging valve capable of selectively opening and closing is arranged at the discharging hole of the weighing cylinder, an output port for discharging is further arranged on the shell, and a third discharging valve is arranged at the output port.

Description

EPS pre-expansion particle detection device and EPS pre-expansion system

Technical Field

The utility model relates to the technical field of EPS prefoaming, in particular to an EPS prefoaming particle detection device and an EPS prefoaming system.

Background

Polystyrene foam (EPS) is a lightweight high molecular polymer. The foaming agent is added into polystyrene resin, and the mixture is heated and softened to generate gas, so that the foamed plastic with a hard closed-cell structure is formed. Are often used to make insulation layers for insulation forms.

The pre-expansion machine is used for pre-expanding EPS granules, so that the EPS expansion is increased, when the pre-expansion machine pre-expands raw materials, the pre-expansion volume must be accurately controlled to obtain the required pre-expansion density of the raw materials, the rear end of the pre-expansion machine is required to be connected with an EPS pre-expansion particle density detection device, and the pre-expansion EPS particles are subjected to density detection, so that whether the EPS pre-expansion particles meet production requirements is judged.

CN215151165U discloses a density detecting device based on an EPS prefoaming machine, which mainly comprises a frame, a charging barrel, a negative pressure component, a charging component, a quantifying component, a collecting hopper, a valve component and a control device; the negative pressure component and the feeding component are arranged at the upper part of the charging barrel, the charging barrel is arranged on the frame, the bottom of the charging barrel is connected with the top of the collecting hopper through the quantitative component, and the valve component is arranged at the bottom of the charging barrel; the negative pressure assembly comprises a negative pressure pipeline, a pneumatic angle seat valve, a filter, a manual ball valve and a one-way valve, wherein the negative pressure pipeline is T-shaped, the pneumatic angle seat valve, the filter and the manual ball valve are all arranged on the transverse shaft of the T-shaped negative pressure pipeline, and the one-way valve is arranged at the tail end of the transverse shaft of the T-shaped negative pressure pipeline; the feeding assembly comprises a feeding pipeline and a pneumatic ball valve, and the pneumatic ball valve is arranged on the feeding pipeline; the quantitative assembly comprises a quantitative hopper, a scraping plate driving device and a weighing sensor, wherein the scraping plate is arranged at the top of the quantitative hopper, the scraping plate driving device is connected with the scraping plate, and the weighing sensor is connected with the quantitative hopper; the valve assembly comprises a valve and a valve driving device, the valve is arranged at the bottom of the charging barrel, and the valve driving device is connected with the valve.

The density detection equipment based on the EPS prefoaming machine has the following problems: 1. the density detection device has extremely complex structure and high manufacturing cost. 2. The density detection equipment structure is sequentially provided with a charging barrel, a quantitative assembly and a collecting hopper from top to bottom, and the height of the density detection equipment structure is approximately 1.6m-1.7m, so that the height is relatively high.

Disclosure of Invention

The utility model aims at: the EPS pre-expansion particle detection device and the EPS pre-expansion system are provided, and not only can the density of EPS pre-expansion particles be detected by automatic blanking, but also the structure is simple and compact.

The utility model is realized by the following technical scheme: EPS prefoaming particle detection device, its characterized in that: the quantitative cylinder is characterized by comprising a shell which is arranged in a sealing manner, wherein a fixed measuring cylinder is fixedly arranged in the shell, a feed pipe which extends out of the shell is arranged at the side part of the fixed measuring cylinder, a sealing manner is arranged between the periphery of the feed pipe and the shell, a feed valve which is arranged in a sealing connection manner and can be selectively opened and closed is arranged at the inlet of the feed pipe, a discharge hole is arranged at the bottom of the fixed measuring cylinder, a first discharge valve which can be selectively opened and closed is arranged at the discharge hole of the fixed measuring cylinder in a sealing connection manner, a first air-permeable mesh screen which is communicated with the fixed measuring cylinder and the inside of the shell is arranged at the top of the fixed measuring cylinder, a second air-permeable mesh screen which is communicated with the outside and the inside of the shell is arranged at the shell, the volumes of the feed pipe and the fixed measuring cylinder are fixed values, and the feed pipe is connected with a positive pressure end;

the electronic scale is used for weighing the weighing cylinder and the materials therein, a discharging opening is formed in the lower portion of the weighing cylinder, a second discharging valve capable of being selectively opened and closed is arranged at the discharging opening of the weighing cylinder, an output port for discharging is further formed in the shell, a third discharging valve which is arranged in a sealing connection mode and capable of being selectively opened and closed is arranged at the output port, and the output port is connected with a negative pressure end.

The EPS prefoaming particle detection device mainly adopts the quantitative cylinder, the weighing cylinder and the electronic balance to finish density detection of materials, and compared with the existing density detection device, the EPS prefoaming particle detection device has simpler structure and more convenient operation.

The working process of the EPS prefoaming particle detection device is approximately as follows: EPS granule is fed through the inlet pipe, and in this process feed valve is opened, and first bleeder valve is closed, and the material is full of inlet pipe and ration section of thick bamboo under the effect of malleation, and wherein the flow direction of air current is through first ventilative mesh screen and the ventilative mesh screen of second to external world flow, and wherein inlet pipe and the volume and the v1 of ration section of thick bamboo are known to confirm. And then closing the second discharge valve, opening the first discharge valve, and enabling the materials to fall into the weighing cylinder, weighing the weighing cylinder by the electronic scale, and obtaining the corresponding weight m1, wherein the density ρ1=m1/v 1 of the materials in the batch. And finally, the second discharge valve is opened, the third discharge valve is opened, the material is pulled out of the shell under the action of negative pressure, and the flow in the wind direction is that the second air-permeable mesh screen flows to the output port.

As a further improvement, the feeding pipe is an inclined pipe which is inclined from top to bottom from the inlet, and the length L1 of the feeding pipe is 180-200mm. Because the inlet pipe is the inclined tube, the material is difficult for piling up like this, and the length of inlet pipe is relatively short in can directly calculate the volume in the quantitative section of thick bamboo with the material in the inlet pipe moreover, when measuring the material of different batches like this, need not to empty the material in the inlet pipe, and efficiency is higher. Because the height of the existing density detection device is approximately 1.6m-1.7m, the feeding pipe is required to be long, the error is large, and the volume in the feeding pipe cannot be calculated.

As a further improvement, a section of hose is arranged in the middle of the feeding pipe. A section of hose is arranged in the feeding pipe, so that the buffering effect can be achieved, the influence of equipment vibration at the front end on the measurement accuracy at the rear is avoided, and the hose can be made of PP or PP materials.

Preferably, the top of the weighing cylinder is open, and the discharge hole of the quantifying cylinder is positioned in the weighing cylinder.

As a further improvement, the discharging opening of the quantitative cylinder is close to one side of the output opening of the shell, and the bottom of the quantitative cylinder is provided with an inclined plate which is inclined downwards from top to bottom to the discharging opening. The bottom of the quantitative cylinder is provided with the inclined plate, so that the discharging is convenient, and the accumulation of materials is not easy to generate.

As a further improvement, the output port of the housing is located on a side wall of the lower end of the housing, and the second air-permeable mesh screen is disposed on an opposite side of the output port. The output port and the second ventilation mesh screen are arranged oppositely, so that the gas flow path is short, the efficiency is high, and the discharging is better.

Preferably, the height L2 of the housing is: 450-550mm. The height of the device is shorter than that of the existing detection device, and the whole structure is miniaturized.

As a further improvement, the positive pressure end to which the feed tube is connected is provided by a pre-expander. The existing pre-foaming machine is provided with the pressurizing equipment, and the feeding pipe can be directly connected into the positive pressure pipeline of the pre-foaming machine, so that a negative pressure device is not required to be arranged independently for material pumping, and the mechanical structure can be further simplified.

Preferably, the housing is cylindrical. The cylindrical shell is adopted, so that most of the shell is curved, few corners exist, and materials are not easy to accumulate.

The utility model also provides an EPS prefoaming system, which is provided with the EPS prefoaming particle detection device and is characterized in that; the device also comprises a pre-foaming machine connected with the feeding pipe, a fan connected with the output port of the shell and a stock bin connected with the fan.

Compared with the prior art, the utility model has the beneficial effects that:

1. the EPS prefoaming particle detection device mainly adopts the quantitative cylinder, the weighing cylinder and the electronic balance to finish density detection of materials, and compared with the existing density detection device, the EPS prefoaming particle detection device has simpler structure and more convenient operation.

2. The length of the feeding pipe is relatively short, so that the materials in the feeding pipe can be directly calculated into the volume in the quantitative cylinder, and the efficiency is higher without emptying the materials in the feeding pipe when the materials in different batches are measured.

3. According to the utility model, the feeding pipe is provided with a section of hose, so that the buffering effect can be realized, and the influence of the vibration of the front-end equipment on the rear measurement precision is avoided.

4. The utility model can further simplify the internal mechanical structure by utilizing the gas circuit of the pre-expander.

Drawings

FIG. 1 is a schematic diagram of a specific embodiment of the present utility model;

fig. 2 is a schematic diagram illustrating an internal structure of an EPS prefire particle detecting device according to an embodiment of the present utility model;

description of the reference numerals: 1. a housing; 11. a second air permeable mesh screen; 12. an output port; 13. a third discharge valve; 14. an access door; 15. an alarm device; 2. a quantitative cylinder; 21. a feed pipe; 211. a hose; 22. a feed valve; 23. a first discharge valve; 24. a first air permeable mesh screen; 3. weighing cylinder; 31. a second discharge valve; 32. a sloping plate; 4. an electronic scale; 5. a prefoaming machine; 6. a blower; 7. and (5) a storage bin.

Detailed Description

The utility model is described in detail below with reference to the accompanying drawings:

the embodiment relates to an EPS pre-foaming system, which sequentially comprises a pre-foaming machine 5, an EPS pre-foaming particle detection device, a fan 6 and a storage bin 7 along the moving direction of materials as shown in fig. 1-2. The pre-expander 5 is used for expanding EPS particles, the expanded EPS particles enter the EPS pre-expansion particle detection device for density detection, and then the fan 6 pumps materials from the detection device into the bin 7.

As shown in fig. 2, the EPS prefoaming particle detecting device includes a housing 1 that is arranged in a sealing manner, a fixed measuring cylinder 2 is fixed in the housing 1, a feeding pipe 21 that extends out of the housing 1 is arranged at the side portion of the fixed measuring cylinder 2, a feeding valve 22 that is arranged in a sealing connection manner and can be selectively opened and closed is arranged at the inlet of the feeding pipe 21, a discharge port is arranged at the bottom of the fixed measuring cylinder 2, a first discharge valve 23 that can be selectively opened and closed is arranged at the discharge port of the fixed measuring cylinder 2 in a sealing connection manner, a first air-permeable mesh screen 24 that is communicated with the fixed measuring cylinder 2 and the interior of the housing 1 is arranged at the top of the fixed measuring cylinder 2, a second air-permeable mesh screen 11 that is communicated with the outside and the interior of the housing 1 is arranged at the housing 1, and the apertures of the first air-permeable mesh screen 24 and the second air-permeable mesh screen 11 are: 0.5-1.5mm, which is much smaller than expanded EPS particles, wherein the volume of the feed pipe 21 and the metering cylinder 2 is a constant value, and the feed pipe 21 is connected with a positive pressure end;

the weighing cylinder 3 positioned below the quantitative cylinder 2 is arranged in the shell 1, the volume of the weighing cylinder 3 is larger than that of the quantitative cylinder 2, the interior of the weighing cylinder 3 is communicated with the interior of the shell 1, materials falling down from the quantitative cylinder 2 enter the weighing cylinder 3, the weighing cylinder 3 is directly fixed on the electronic scale 4 through a frame, the electronic scale 4 is used for weighing the weighing cylinder 3 and the materials therein, a discharging opening is arranged at the lower part of the weighing cylinder 3, a second discharging valve 31 capable of being selectively opened and closed is arranged at the discharging opening of the weighing cylinder 3, an output port 12 used for discharging is further arranged on the shell 1, a third discharging valve 13 which is arranged in a sealing connection mode and capable of being selectively opened and closed is arranged at the output port 12, and the output port 12 is connected with a negative pressure end.

The EPS particles are inflammable substances, so that the valve bodies are all pneumatic valves, the safety is better, and flame-retardant equipment is required to be additionally arranged if an electric valve is adopted.

This EPS detects device of sending out granule in advance mainly adopts quantitative section of thick bamboo 2, weighs section of thick bamboo 3 and electronic balance and can accomplish the density detection of material, compares in current density detection device, and the structure is simpler, and the operation is more convenient moreover.

The working process of the EPS prefoaming particle detection device is approximately as follows: EPS particles are fed through the feed pipe 21 during which the feed valve 22 is opened and the first discharge valve 23 is closed, the feed pipe 21 and the dosing cylinder 2 are filled with material under positive pressure, wherein the flow direction of the air flow is through the first air-permeable screen 24 and the second air-permeable screen 11 to the outside, wherein the volume and v1 of the feed pipe 21 and the dosing cylinder 2 are known. Subsequently, the second discharge valve 31 is closed, the first discharge valve 23 is opened, the material falls down and falls into the weighing cylinder 3, the electronic scale 4 weighs the weighing cylinder 3, and the corresponding weight m1 is known, so that the density ρ1=m1/v 1 of the batch of material is obtained. Finally, the second discharge valve 31 is opened, the third discharge valve 13 is opened, and the material is pulled out of the shell 1 under the action of negative pressure, wherein the flow of wind direction is that the second air-permeable mesh screen 11 flows to the output port 12.

As a further improvement, as shown in FIG. 2, the feeding pipe 21 is an inclined pipe inclined from top to bottom from the inlet, and the length L1 of the feeding pipe 21 is 180-200mm. Because inlet pipe 21 is the inclined tube, the material is difficult for piling up like this, and the length of inlet pipe 21 is relatively short moreover can directly calculate the material in the inlet pipe 21 into the volume in quantitative cylinder 2, and when measuring the material of different batches like this, need not to empty the material in the inlet pipe 21, and efficiency is higher. Since the conventional density measuring apparatus has a height of approximately 1.6m to 1.7m, the feeding pipe 21 is required to be long, and the error is large, so that the volume in the feeding pipe 21 cannot be counted.

As a further improvement, as shown in fig. 2, a section of hose 211 is provided in the middle of the feed pipe 21. A section of hose 211 is provided in the feed pipe 21, so that a buffering effect can be achieved, and the influence of the vibration of equipment at the front end on the measurement accuracy at the rear is avoided, and the hose 211 can be made of PP or PP materials.

Preferably, as shown in fig. 2, the top of the weighing cylinder 3 is open, and the discharge port of the quantifying cylinder 2 is located in the weighing cylinder 3.

As a further improvement, as shown in fig. 2, the feed opening of the quantifying cylinder 2 is near to the output port 12 side of the housing 1, and the bottom of the quantifying cylinder 2 is provided with a sloping plate 32 sloping downwards from top to bottom to the feed opening. The inclined plate 32 is arranged at the bottom of the quantitative barrel 2, so that the discharging is convenient, and the accumulation of materials is not easy to generate.

As a further improvement, as shown in fig. 2, the outlet 12 of the housing 1 is located on a side wall of the lower end of the housing 1, and the second air-permeable screen 11 is disposed on the opposite side of the outlet 12. The output port 12 and the second air-permeable mesh screen 11 are arranged oppositely, so that the gas flow path is short, the efficiency is high, and the discharging is better.

Preferably, as shown in fig. 2, the height L2 of the housing 1 is: 450-550mm. The height of the device is shorter than that of the existing detection device, and the whole structure is miniaturized.

As a further improvement, the positive pressure end to which the feed pipe 21 is connected is provided by the pre-expander 5. The existing pre-expander 5 is provided with a pressurizing device, and the feeding pipe 21 can be directly connected into a positive pressure pipeline of the pre-expander 5, so that a negative pressure device is not required to be arranged independently for material pumping, and the mechanical structure can be further simplified.

Preferably, as shown in fig. 2, the housing 1 is cylindrical. The cylindrical shell is adopted, so that most of the shell is curved, few corners exist, and materials are not easy to accumulate. The present utility model is not limited to a circular structure, and a square structure may be used.

As shown in fig. 2, the detecting device is further provided with an alarm device 15 on the housing 1, when each valve body is blocked or the detected seal exceeds a preset range, the detecting device can ensure, and an access door 14 is reserved on the housing 1.

While the utility model has been illustrated and described with respect to specific embodiments and alternatives thereof, it will be appreciated that various changes and modifications can be made therein without departing from the spirit of the utility model. It is, therefore, to be understood that the utility model is not to be in any way limited except by the appended claims and their equivalents.

Claims

1. EPS prefoaming particle detection device, its characterized in that: the quantitative cylinder is characterized by comprising a shell which is arranged in a sealing manner, wherein a fixed measuring cylinder is fixedly arranged in the shell, a feed pipe which extends out of the shell is arranged at the side part of the fixed measuring cylinder, a sealing manner is arranged between the periphery of the feed pipe and the shell, a feed valve which is arranged in a sealing connection manner and can be selectively opened and closed is arranged at the inlet of the feed pipe, a discharge hole is arranged at the bottom of the fixed measuring cylinder, a first discharge valve which can be selectively opened and closed is arranged at the discharge hole of the fixed measuring cylinder in a sealing connection manner, a first air-permeable mesh screen which is communicated with the fixed measuring cylinder and the inside of the shell is arranged at the top of the fixed measuring cylinder, a second air-permeable mesh screen which is communicated with the outside and the inside of the shell is arranged at the shell, the volumes of the feed pipe and the fixed measuring cylinder are fixed values, and the feed pipe is connected with a positive pressure end;

2. An EPS prefoaming particle detection apparatus in accordance with claim 1, characterized in that: the feeding pipe is an inclined pipe which is inclined from top to bottom from the inlet, and the length L1 of the feeding pipe is 180-200mm.

3. An EPS prefoaming particle detection apparatus in accordance with claim 1, characterized in that: the middle part of the feeding pipe is provided with a section of hose.

4. An EPS prefoaming particle detection apparatus in accordance with claim 1, characterized in that: the top of the weighing cylinder is open, and the discharge hole of the quantitative cylinder is positioned in the weighing cylinder.

5. An EPS prefoaming particle detection apparatus in accordance with claim 1, characterized in that: the blanking opening of the quantitative cylinder is close to one side of the output port of the shell, and the bottom of the quantitative cylinder is provided with an inclined plate which is inclined downwards from top to bottom to the blanking opening.

6. An EPS prefoaming particle detection apparatus in accordance with claim 1, characterized in that: the output port of the shell is positioned on the side wall of the lower end of the shell, and the second air-permeable mesh screen is arranged on the opposite side of the output port.

7. An EPS prefoaming particle detection apparatus in accordance with claim 1, characterized in that; the height L2 of the housing is: 450-550mm.

8. An EPS prefoaming particle detection apparatus in accordance with claim 1, characterized in that; the positive pressure end connected with the feeding pipe is provided by a pre-expander.

9. An EPS prefoaming particle detection apparatus in accordance with claim 1, characterized in that; the housing is cylindrical.

10. An EPS prefoaming system having an EPS prefoaming particle detection apparatus as claimed in any one of claims 1 to 9, characterized in that; the device also comprises a pre-foaming machine connected with the feeding pipe, a fan connected with the output port of the shell and a stock bin connected with the fan.