CN214309735U

CN214309735U - Self-cleaning telescopic material sampling device

Info

Publication number: CN214309735U
Application number: CN202022580178.1U
Authority: CN
Inventors: 陶俊涛; 周海渊; 宋青峰; 卢元利; 刘家强; 齐传科; 李明忠; 谢春伟; 姜宏震; 张雪
Original assignee: Dongfang Measurement & Control Technology Co ltd
Current assignee: Dongfang Measurement & Control Technology Co ltd; Dandong Dongfang Measurement and Control Technology Co Ltd
Priority date: 2020-11-10
Filing date: 2020-11-10
Publication date: 2021-09-28
Anticipated expiration: 2030-11-10

Abstract

The utility model relates to a telescopic material sampling device of automatically cleaning, the device can be used to trades such as coal, cement. The material channel is provided with a hole, the upper flange (2) is welded on the material channel, and the sampling device is connected with the upper flange (2) through the connecting flange (3). The sampling device has the advantages that online sampling is realized by a method of intercepting material flow in the material channel, the sampling device adjusts the extension of the sampling knife electrically, pneumatically or hydraulically, has the function of automatically cleaning impurities on the knife edge, and is suitable for sampling materials with high moisture content and materials containing fibrous impurities. The device adopts electric, pneumatic or hydraulic actuating mechanism, has simple structure, and advantages such as safe and stable high efficiency, do not account for the passageway.

Description

Self-cleaning telescopic material sampling device

Technical Field

The utility model relates to an online material sampling device is a device of automatic intercepting material flow sampling mode.

Background

With the development of science and technology, online material detection and analysis instruments are increasingly applied to industries such as coal, cement and the like, and can analyze the attributes and the quality of materials in each production stage in real time so as to achieve the purpose of quality control. Therefore, each step of sampling, preparing and analyzing is very important. At present, the sampling process is from traditional manual sampling to mechanical automatic sampling, and the efficiency, the accuracy and the timeliness of the sampling process are greatly improved. The existing mechanical sampling is divided into a static mode and a mobile flow mode, wherein the mobile flow sampling mainly comprises a belt middle sampling device and a falling flow sampling device. At present, the most common falling flow sampling device is a spiral type sampling device; the sampling head is inserted into the material channel and samples by driving the spiral reamer by the motor. The sampling mode has good tightness and the sampling quantity can be ensured. But the structure is more complex, and the service life of the internal spiral reamer is short; the large-moisture and fibrous blanking can be adhered to the surfaces of the sampling head and the spiral reamer, the automatic cleaning function is not provided, the maintenance difficulty is high, and scientific and stable sampling cannot be performed. Inside spiral sampling device's sampling head need the permanent material passageway of inserting, it is great to occupy the material passageway inner space, can cause certain influence to the smoothness nature of non-sampling time blanking, and is not fit for the big viscidity material of moisture. The spiral sampling device has certain limitations.

Disclosure of Invention

The utility model relates to a telescopic sampling device that flows that falls who has self-cleaning function. Aiming at the defects of the traditional spiral sampling mode, the device has simple structure and firm installation. Can scrape sample sword (1) automatically, need not maintain, life is longer, and the operation is more stable. The opening size of the sampling knife (1) can be set according to the granularity of the materials to allow the materials to pass through completely. The non-sampling time does not occupy the internal space of the material channel, so that the blanking can flow without obstacles according to the drift diameter of the original material channel. The utility model overcomes the limitation of traditional spiral sample mode, reduced wearing and tearing, more be fit for the material that moisture is big.

The utility model adopts the technical proposal that: the utility model provides a telescopic material sampling device of automatically cleaning, characterized by: at the material passageway trompil, go up flange (2) and lower flange (9) welding on material passageway, discharging pipe (7) are connected with lower flange (9) through the bolt, set up pneumatic gate valve (8) in the middle of discharging pipe (7), flange (3) are connected with last flange (2) through the bolt, flange (3) and urceolus (6) welded fastening, cylinder (4) and urceolus (6) bolt fastening, clear blade (5) and urceolus (6) welded fastening, it is fixed to have installed spherical bearing additional between cylinder (4) piston rod and the sample sword (1) and be connected through the nut. The sampling knife (1) can be driven in an electric, pneumatic or hydraulic mode, and the driving mode can be selected by combining the actual situation of the application site. When sampling, the pneumatic gate valve (8) at the discharging pipe (7) is opened, the sampling knife (1) extends into the material channel and is inserted into the discharging pipe (7), and the sampling knife (1) and the discharging pipe (7) form an inclined channel. The material falls into the sampling knife (1) and flows into the discharge pipe (7) along the same direction. After material taking is finished, the pneumatic gate valve (8) is closed, and the sampling knife (1) is retracted into the shell (6). The pneumatic gate valve (8) can be replaced by a hydraulic knife gate valve or an electric gate valve. Can prevent the material from falling into the discharge pipe (7) during the non-material taking time. The sampling knife (1) is made of stainless steel, and can be lined with a polyethylene plate to increase the wear resistance. The upper flange (2) and the lower flange (9) are made of carbon steel and can be directly welded at the position of the opening on the outer wall of the material channel; the upper flange (2) and the connecting flange (3) are matched with each other to fix the outer cylinder (6) of the sampling device; the lower flange (9) can fix the discharge pipe (7) and the pneumatic gate valve (8); the outer cylinder (6) is made of stainless steel and plays a role in fixing the driving device and accommodating the sampling knife (1). The cylinder (4) is provided with a magnetic ring induction device which is connected with a PLC control system in the control box (10) to control the sampling cutter (1) to do reciprocating motion in the material channel and the outer cylinder (6), and the sampling frequency, the sampling speed and the sampling time can be set.

The utility model discloses beneficial effect:

the utility model discloses can trompil on the material passageway outer wall, fixed through last flange (2) and lower flange (9), also guaranteed the good seal of material passageway when simple to operate.

During sampling, the sampling cutter (1) is inserted into the material channel until the discharging pipe (7) on the other side, the sampling cutter (1) and the discharging pipe (7) form an inclined channel, so that the material falling into the sampling cutter (1) flows into the discharging pipe (7) along the inclined direction of the sampling cutter (1), and meanwhile, the cutter head of the sampling cutter (1) also plays a role in dredging the discharging pipe (7) when being inserted into the discharging pipe (7).

After the sample was accomplished, when sample sword (1) retracted urceolus (6), clear blade (5) can scrape sample sword (1), and the viscidity is great adsorbs in material and the impurity of sample sword (1) inner wall can be clear away and fall back to the material passageway. Meanwhile, the pneumatic gate valve (8) at the discharging pipe (7) is closed, so that the blanking material in non-sampling time can not flow out of the discharging pipe (7).

The sampling cutter (1) is in a retraction state, and does not occupy the drift diameter of the material channel; the blanking can pass through the material channel without obstacles, so that the sampling accuracy is ensured, and the drift diameter of the material channel is not influenced.

The utility model discloses accessible programming control freely controls the sampling frequency and the sampling time of sample sword (1), has improved the representativeness of sample and the automatic level of sample.

Drawings

FIG. 1 is a schematic structural view of a retractable material sampling device;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic diagram of the telescopic material sampling device during sampling operation;

FIG. 4 is a schematic view of the retractable material sampling device when the sampling is stopped.

Detailed Description

When the material falls in the material channel, the PLC in the control box (10) sends out control signals to the electromagnetic valve at regular time to control the air supply of the air cylinder (4) and the pneumatic gate valve (8). The pneumatic gate valve (8) is opened, the piston rod of the air cylinder (4) is recovered, the sampling knife (1) is driven to extend until the discharging pipe (7) at the other side is inserted, and the material flow is intercepted by the sampling knife (1). Because the structure and the style of the sampling knife (1) and the installation angle can form an inclined channel in the material channel, the material flows into the discharge pipe (7) along the inclined direction of the sampling knife (1), thereby completing the sampling work. After sampling is finished, a PLC in the control box (10) sends out a control signal to control the air cylinder (4) and the pneumatic gate valve (8) to supply air, so that the sampling cutter (1) retracts into the outer cylinder (6), and the pneumatic gate valve (8) is closed; meanwhile, the cleaning blade (5) can scrape the sampling cutter (1), and scraped materials and sundries can fall back into the material channel, so that sampling work is completed.

Claims

1. The utility model provides a telescopic material sampling device of automatically cleaning which characterized in that: a hole is formed in the material channel, the upper flange (2) is welded on the material channel, and the sampling device is connected with the upper flange (2) through the connecting flange (3); the discharging pipe (7) is connected with a lower flange (9) through a bolt, a pneumatic gate valve (8) is arranged in the middle of the discharging pipe (7), a connecting flange (3) is welded and fixed with an outer barrel (6), a cylinder (4) is fixed with the outer barrel (6) through a bolt, a cleaning blade (5) is welded and fixed with the outer barrel (6), and a piston rod of the cylinder (4) is connected and fixed with a sampling cutter (1) through a spherical bearing.

2. The self-cleaning telescoping material sampling device of claim 1, wherein: the cylinder (4) is provided with a magnetic ring induction device which is connected with a PLC control system in the control box (10) and can control the sampling knife (1) to reciprocate in the material channel and the outer cylinder (6); the sampling frequency, sampling speed and sampling time can be set.

3. The self-cleaning telescoping material sampling device of claim 1, wherein: the pneumatic gate valve (8) at the discharging pipe (7) can prevent materials from falling into the discharging pipe (7) in non-material-taking time; can be replaced by a hydraulic knife gate valve or an electric gate valve.

4. The self-cleaning telescoping material sampling device of claim 1, wherein: the sampling knife (1) is made of stainless steel or carbon steel, and can be lined with ultra-high molecular polyethylene, wear-resistant rubber or polyurethane to increase the wear resistance; the sampling knife (1) can be driven to extend into the material channel by an electric, pneumatic or hydraulic driving mode and is finally inserted into the discharge pipe (7); meanwhile, the sampling knife (1) also plays a role in dredging the discharge pipe (7); when the sampling knife (1) retracts into the outer barrel (6), the cleaning blade (5) can scrape the sampling knife (1), and scraped materials and sundries can fall back into the material channel.

5. The self-cleaning telescoping material sampling device of claim 4, wherein: the angle between the sampling knife (1) and the horizontal plane is more than or equal to 55 degrees; the section of the sampling knife (1) can be arc-shaped, square, V-shaped or trapezoidal; the size of the sampling knife (1) can be adjusted according to the granularity of the materials.

6. The self-cleaning telescoping material sampling device of claim 4, wherein: when the sampling knife (1) is in a contraction state, the sampling device does not occupy the space of the material passage, so that materials can pass through without obstacles in the non-material taking time.