Pulverized coal fineness detecting and sampling device

Abstract

The utility model discloses a pulverized coal fineness detecting and sampling device, which relates to the technical field of sampling devices and comprises a mounting seat, a sampling pipe is inserted into the bottom of the mounting seat, a discharge pipe is fixedly connected to the outer side of the sampling pipe, a fitting sleeve is fixedly connected to the inner side of the sampling pipe, two mounting grooves are formed in the outer side of the mounting seat, and the fitting sleeve is fixedly connected to the outer side of the mounting seat. A shell is fixedly connected to the inner side of the mounting groove, a mounting plate is slidably connected to an inner cavity of the shell, a conical pipe is fixedly connected to the inner side of the sampling pipe, a filling block is fixedly connected between the outer side of the conical pipe and the inner side of the sampling pipe, and a motor is fixedly connected to the top of the mounting seat. The pulverized coal fineness detecting and sampling device has the advantages that the structural design is reasonable, pulverized coal samples can be effectively prevented from falling off from the sampling tube to influence detection data, internal key parts can be conveniently cleaned and maintained, and cross contamination caused by accumulation of residual pulverized coal is prevented.

Description

Technical Field

[0001] This utility model relates to the field of sampling device technology, specifically a coal powder fineness detection sampling device. Background Technology

[0002] Powdered coal refers to coal with a particle size of less than 0.5 mm and is the most commonly used additive in cast iron molding sand. In recent years, foreign countries have been supplying a commercial product (carbon clay) made by mixing powdered coal with clay. Adding powdered coal to wet molding sand for cast iron can prevent sand adhesion defects on the casting surface, improve the surface finish of the casting, reduce sand inclusion defects, and improve the collapsibility of the molding sand. For wet molded ductile iron parts, it can also effectively prevent the formation of subcutaneous porosity, allowing the use of circular vortex burners without air preheating. The fineness of powdered coal is one of the important indicators affecting the combustion economy of boilers; therefore, powdered coal sampling is a necessary means to monitor the combustion status of boilers.

[0003] Existing coal powder fineness testing and sampling devices often result in coal powder samples falling out of the sampling tube after sampling, leading to sample loss and inaccurate test data. Furthermore, the existing coal powder fineness testing and sampling devices adopt an integral fixed structure design and lack modular disassembly capabilities, making it difficult to carry out cleaning and maintenance of key internal components. This may lead to cross-contamination due to the accumulation of residual coal powder, ultimately affecting the reliability of fineness test results. Therefore, a new technical solution needs to be designed to address this issue. Utility Model Content

[0004] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a coal powder fineness detection sampling device, including a mounting base, a sampling tube inserted into the bottom of the mounting base, a discharge pipe fixedly connected to the outer side of the sampling tube, and a fitting sleeve fixedly connected to the inner side of the sampling tube. Two mounting grooves are formed on the outer side of the mounting base, and a housing is fixedly connected to the inner side of the mounting grooves. A mounting plate is slidably connected to the inner cavity of the housing. Through an anti-leakage mechanism, after sampling, the coal powder sample is prevented from falling out of the sampling tube, thus preventing sample loss and inaccurate detection data. This effectively prevents the coal powder sample from falling out of the sampling tube and affecting the detection data. Through a positioning mechanism, the sampling device can be quickly disassembled, facilitating cleaning and maintenance of internal key components and preventing cross-contamination due to residual coal powder accumulation, which would affect the reliability of the fineness detection results.

[0006] Preferably, a tapered tube is fixedly connected to the inner side of the sampling tube, and a filling block is fixedly connected between the outer side of the tapered tube and the inner side of the sampling tube, so that the gap between the tapered tube and the sampling tube is filled and sealed by the filling block.

[0007] Preferably, a motor is fixedly connected to the top of the mounting base, and a mounting rod is fixedly connected to the bottom end of the power output shaft of the motor. The bottom end of the mounting rod passes through the mounting base and extends to the inside of the sampling tube. The motor drives the mounting rod to drive the auger to work.

[0008] Preferably, a first spiral auger is fixedly connected to the upper outer side of the mounting rod, and a second spiral auger is fixedly connected to the lower outer side of the mounting rod, so that the sampling material is collected by the spiral auger.

[0009] Preferably, a positioning tenon is fixedly connected to one side of the mounting plate. One end of the positioning tenon passes through the housing and the sampling tube and extends into the interior of the mounting base, thereby fixing the sampling tube.

[0010] Preferably, a threaded sleeve is fixedly connected to one side of the housing, and a threaded pull rod is threaded to the inner side of the threaded sleeve.

[0011] Preferably, one end of the threaded rod passes through the housing and extends into the inner cavity of the housing, and one end of the threaded rod is rotatably connected to the mounting plate. A compression spring is sleeved on the outer side of the threaded rod to limit the position of the positioning tenon.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This coal powder fineness detection sampling device, through an anti-leakage mechanism, can prevent coal powder samples from falling out of the sampling tube after sampling is completed, thus preventing sample loss and inaccurate test data. This effectively prevents coal powder samples from falling out of the sampling tube and affecting the test data.

[0014] 2. This coal powder fineness detection and sampling device can be quickly disassembled through a positioning mechanism, which facilitates the cleaning and maintenance of key internal components and prevents cross-contamination caused by residual coal powder accumulation, thus affecting the reliability of the fineness detection results. Attached Figure Description

[0015] Figure 1 This is a front-view three-dimensional structural diagram of a coal powder fineness detection and sampling device proposed in this utility model;

[0016] Figure 2 This is a bottom-view three-dimensional structural diagram of a coal powder fineness detection and sampling device proposed in this utility model;

[0017] Figure 3 This is a schematic diagram of the front cross-sectional structure of a coal powder fineness detection and sampling device proposed in this utility model;

[0018] Figure 4 This utility model proposes a coal powder fineness detection and sampling device. Figure 3 Enlarged schematic diagram of the structure at point A in the middle;

[0019] In the diagram: 100, mounting base; 110, sampling tube; 120, discharge tube; 130, fitting sleeve; 140, tapered tube; 150, filler block; 160, motor; 161, mounting rod; 170, first auger; 180, second auger; 200, mounting groove; 210, housing; 220, mounting plate; 221, positioning tenon; 230, threaded sleeve; 240, threaded tie rod; 250, compression spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Example 1: Please refer to again Figure 1-4 This utility model provides a coal powder fineness detection and sampling device, including a mounting base 100, a sampling tube 110 inserted into the bottom of the mounting base 100, a discharge pipe 120 fixedly connected to the outer side of the sampling tube 110, a fitting sleeve 130 fixedly connected to the inner side of the sampling tube 110, a tapered tube 140 fixedly connected to the inner side of the sampling tube 110, a filling block 150 fixedly connected between the outer side of the tapered tube 140 and the inner side of the sampling tube 110, a motor 160 fixedly connected to the top of the mounting base 100, a mounting rod 161 fixedly connected to the bottom end of the power output shaft of the motor 160, the bottom end of the mounting rod 161 penetrating the mounting base 100 and extending to the inner side of the sampling tube 110, a first spiral auger 170 fixedly connected to the upper outer side of the mounting rod 161, and a second spiral auger 180 fixedly connected to the lower outer side of the mounting rod 161.

[0022] Specifically, the motor 160 drives the mounting rod 161 to rotate, causing the first auger 170 and the second auger 180 mounted on the mounting rod 161 to rotate along with the mounting rod 161, collecting coal powder into the sampling tube 110. When the second auger 180 delivers the coal powder sample into the sampling tube 110, the fitting sleeve 130 reduces the inner diameter of the sampling tube 110, allowing the second auger 180 to deliver the coal powder normally. When the second auger 180 delivers the coal powder through the conical tube 140 to the first auger 170, the cone shape changes to a shape that is narrower at the top and wider at the bottom. Therefore, the coal powder delivered to the second auger 180 is less likely to fall out of the sampling tube 110 through the conical tube 140. Thus, the coal powder can be delivered by the second auger 180 to the discharge pipe 120, where workers collect the coal powder sample.

[0023] Example 2: Please refer to again Figure 1-4 The mounting base 100 has two mounting slots 200 on its outer side. A housing 210 is fixedly connected to the inner side of the mounting slots 200. A mounting plate 220 is slidably connected to the inner cavity of the housing 210. A positioning tenon 221 is fixedly connected to one side of the mounting plate 220. One end of the positioning tenon 221 passes through the housing 210 and the sampling tube 110 and extends into the interior of the mounting base 100. A threaded sleeve 230 is fixedly connected to one side of the housing 210. A threaded pull rod 240 is threaded to the inner side of the threaded sleeve 230. One end of the threaded pull rod 240 passes through the housing 210 and extends into the inner cavity of the housing 210. One end of the threaded pull rod 240 is rotatably connected to the mounting plate 220. A compression spring 250 is sleeved on the outer side of the threaded pull rod 240.

[0024] Specifically, when it is necessary to disassemble the sampling device and clean its internal components, the threaded pull rods 240 on both sides are shaped to disconnect them from the threaded sleeve 230. Then, pulling the threaded pull rods 240 outwards causes the mounting plate 220 to press against the compression spring 250, thereby releasing the positioning tenon 221 on the mounting plate 220 from its limiting and fixing effect on the sampling tube 110. The tube then moves into the housing 210, allowing the sampling tube 110, now unfixed by the positioning tenon 221, to be disassembled. The coal dust residue on the first spiral auger 170 and the second spiral auger 180 inside the sample tube is cleaned. After cleaning, the sample tube 110 is reinserted into the mounting base 100. Then, the threaded pull rod 240 is loosened to reset the compression spring 250 squeezed by the mounting plate 220, pushing the mounting plate 220 to move so that the positioning tenon 221 on the mounting plate 220 is inserted into the sample tube 110 to limit the position of the sample tube 110. Then, the threaded pull rod 240 is rotated to screw the threaded pull rod 240 into the threaded sleeve 230 to complete the installation and fixation of the sample tube 110.

[0025] Working principle: The motor 160 drives the mounting rod 161 to rotate, causing the first spiral auger 170 and the second spiral auger 180 mounted on the mounting rod 161 to rotate along with the mounting rod 161, collecting coal powder into the sampling tube 110. When the second spiral auger 180 delivers the coal powder sample into the sampling tube 110, the fitting sleeve 130 reduces the inner diameter of the sampling tube 110, allowing the second spiral auger 180 to deliver the coal powder normally. When the second spiral auger 180 delivers the coal powder through the conical tube 140 to the first spiral auger 170, the cone shape changes to a shape that is narrower at the top and wider at the bottom. Therefore, the coal powder delivered to the second spiral auger 180 is difficult to fall out of the sampling tube 110 through the conical tube 140. Thus, the coal powder can be delivered by the second spiral auger 180 to the discharge pipe 120, where the coal powder sample is collected by the staff.

[0026] When it is necessary to disassemble the sampling device and clean its internal components, the threaded pull rods 240 on both sides are shaped to disconnect them from the threaded sleeve 230. Then, pulling the threaded pull rods 240 outwards causes the mounting plate 220 to press against the compression spring 250, thereby releasing the positioning tenon 221 on the mounting plate 220 from its limiting and fixing effect on the sampling tube 110. The tube then moves into the housing 210, allowing the sampling tube 110, now unfixed by the positioning tenon 221, to be disassembled. The coal dust residue on the first spiral auger 170 and the second spiral auger 180 inside is cleaned. After cleaning, the sampling tube 110 is reinserted into the mounting base 100. Then, the threaded pull rod 240 is loosened to reset the compression spring 250 squeezed by the mounting plate 220, pushing the mounting plate 220 to move so that the positioning tenon 221 on the mounting plate 220 is inserted into the sampling tube 110 to limit the sampling tube 110. Then, the threaded pull rod 240 is rotated to screw the threaded pull rod 240 into the threaded sleeve 230, completing the installation and fixing of the sampling tube 110.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pulverized coal fineness detection sampling device, comprising a mounting seat (100), characterized in that, The bottom of the mounting base (100) is inserted with a sampling pipe (110), the outer side of the sampling pipe (110) is fixedly connected with a discharge pipe (120), and the inner side of the sampling pipe (110) is fixedly connected with a fit sleeve (130). The outer side of the mounting base (100) is provided with two mounting grooves (200), the inner side of the mounting groove (200) is fixedly connected with a shell (210), and the inner cavity of the shell (210) is slidingly connected with a mounting plate (220).

2. The coal fineness detection sampling device of claim 1, wherein The inner side of the sampling pipe (110) is fixedly connected with a conical pipe (140), and the outer side of the conical pipe (140) and the inner side of the sampling pipe (110) are fixedly connected with a filling block (150).

3. The coal fineness detection sampling device of claim 2, wherein, The top of the mounting base (100) is fixedly connected with a motor (160), the bottom end of the power output shaft of the motor (160) is fixedly connected with a mounting rod (161), the bottom end of the mounting rod (161) penetrates through the mounting base (100) and extends to the inner side of the sampling pipe (110).

4. The coal fineness detection sampling device of claim 3, wherein, The outer side of the mounting rod (161) is fixedly connected with a first spiral auger (170) on the upper side, and the outer side of the mounting rod (161) is fixedly connected with a second spiral auger (180) on the lower side.

5. The coal fineness detection sampling device of claim 1, wherein, One side of the mounting plate (220) is fixedly connected with a positioning tenon (221), one end of the positioning tenon (221) penetrates through the shell (210) and the sampling pipe (110) and extends to the inside of the mounting base (100).

6. The coal fineness detection sampling device of claim 5, wherein, One side of the shell (210) is fixedly connected with a screw sleeve (230), and the inner side of the screw sleeve (230) is screwed with a threaded pull rod (240).

7. The coal fineness detection sampling device of claim 6, wherein, One end of the threaded pull rod (240) penetrates through the shell (210) and extends to the inner cavity of the shell (210), one end of the threaded pull rod (240) is rotatably connected with the mounting plate (220), and the outer side of the threaded pull rod (240) is sleeved with a compression spring (250).

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