Cold glue inlaying device for preparing coal rock polished section

Abstract

The utility model discloses a cold glue inlaying device for preparing a coal rock polished section, which comprises a negative pressure box, the negative pressure box is of a rectangular cubic structure, and a pipeline joint is detachably mounted on the negative pressure box; one end of the pipeline connector is provided with a silencer, the other end of the pipeline connector is connected with one end of an air exhaust pipeline, the other end of the air exhaust pipeline is connected to one side of a vacuum pump, and the other side of the vacuum pump is connected with a vacuum pump motor. The size of the device meets the preparation requirement of the coal rock polished section, when the device is used for preparing the coal rock polished section, a steel needle does not need to be used for puncturing bubbles, the air pressure in the negative pressure box reaches-0.1 MPa through vacuumizing operation, the bubbles are rapidly eliminated, the preparation operation of the coal rock polished section is simplified, and the production efficiency is improved. The preparation time of the coal rock polished section is shortened; meanwhile, according to the coal rock pulverized coal polished section prepared by the device, bubbles are obviously reduced, the sample preparation effect is good, and the coal rock sample can be sealed for a long time.

Description

Technical Field

[0001] The utility model belongs to the technical field of coal rock samples, relates to a preparation device for coal rock samples, and specifically relates to a cold glue embedding device for preparing coal rock optical slices. Background Art

[0002] The basis of coal rock analysis is to prepare qualified pulverized coal slices. In GB / T 16773-2008 "Methods for preparing samples for coal rock analysis", pulverized coal slices can be prepared by cold glue and hot glue to prepare coal bricks. However, the hot glue method has high requirements on the operator's experience and physical strength. The preparation process requires heating, which has certain safety hazards, and the hot glue method is not suitable for lignite, especially young lignite. The cold glue method for preparing pulverized coal slices has the characteristics of simple preparation, easy operation, sample applicability cavity, and the ability to prepare multiple samples at one time. It is the trend of pulverized coal slice preparation in the future. However, in the process of preparing pulverized coal slices by the cold glue method, it is necessary to pour the sample while stirring, which will produce a large number of bubbles. Too many bubbles in the coal rock pulverized coal slice will affect the test results. Therefore, it is often necessary to puncture the bubbles with a steel needle. The process of puncturing the bubbles is cumbersome and time-consuming. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a cold glue embedding device for preparing coal rock slices, so as to solve the technical problem that the process of eliminating bubbles in coal rock slices in the prior art is complicated and time-consuming.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A cold glue embedding device for preparing coal rock optical slices includes a negative pressure box, wherein the negative pressure box includes a negative pressure box body, the four sides and the bottom of the negative pressure box body are closed, the top of the negative pressure box body is open, a negative pressure box sealing cover is detachably provided on the top of the negative pressure box body, a sealing ring is provided at the connection between the negative pressure box body and the negative pressure box sealing cover, and the enclosed space surrounded by the negative pressure box body and the negative pressure box sealing cover is a negative pressure cavity.

[0006] The negative pressure box is a rectangular cube structure, the length of the negative pressure box is 25 cm, the width of the negative pressure box is 19 cm, the height of the negative pressure box is 23 cm, the thickness of the negative pressure box body is 2 cm, and the thickness of the negative pressure box sealing cover is 2.5 cm.

[0007] A pipe joint installation hole is provided in the middle position of the negative pressure box sealing cover, and a pipe joint is detachably installed in the pipe joint installation hole; a muffler is installed on one lateral end of the pipe joint, and one end of an exhaust pipe is connected to the other lateral end of the pipe joint, and the other end of the exhaust pipe is connected to one lateral side of the vacuum pump, and the other lateral side of the vacuum pump is connected to a vacuum pump motor; the negative pressure chamber is connected to the air inlet end of the pipe joint, the air outlet end of the pipe joint is connected to the air inlet end of the exhaust pipe, and the air outlet end of the exhaust pipe is connected to the vacuum pump.

[0008] The utility model also has the following technical features:

[0009] A first control valve is arranged on the top surface of one side of the pipeline joint, and a second control valve is arranged on the top surface of the other side of the pipeline joint.

[0010] A pressure gauge is installed at the middle position of the top end of the pipeline joint.

[0011] Compared with the prior art, the utility model has the following technical effects:

[0012] The vacuum cold glue embedding device of the utility model is designed for coal rock slices, and its size meets the preparation requirements of coal rock slices. When the device is used to prepare coal rock slices, there is no need to use a steel needle to puncture the bubbles. Instead, the air pressure in the negative pressure box is made to reach -0.1MPa through vacuum operation, so as to achieve rapid elimination of bubbles. The device simplifies the preparation operation of coal rock slices and shortens the preparation time of coal rock slices. At the same time, the coal rock powder slices prepared by the device have significantly reduced bubbles, good sample preparation effect, and can be used to seal the coal rock samples for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The figure is a schematic diagram of the overall structure of the cold glue mounting device used to prepare coal rock slices.

[0014] Figure 2 It is a structural schematic diagram of the negative pressure box.

[0015] The meanings of the various numbers in the figure are: 1-negative pressure box, 2-pipe joint, 3-muffler, 4-exhaust pipe, 5-vacuum pump, 6-vacuum pump motor, 7-first control valve, 8-second control valve, 9-pressure gauge.

[0016] 101 - negative pressure box body, 102 - negative pressure box sealing cover, 103 - sealing ring, 104 - negative pressure chamber, 105 - pipe joint installation hole.

[0017] The specific contents of the utility model are further explained in detail below in conjunction with the embodiments. DETAILED DESCRIPTION

[0018] It should be noted that, unless otherwise specified, all components in the present invention are components known in the art.

[0019] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of the present application fall within the protection scope of the present invention.

[0020] Embodiment 1:

[0021] This embodiment provides a cold glue mounting device for preparing coal rock light slices, such as Figure 1 and Figure 2 As shown, it includes a negative pressure box 1, which includes a negative pressure box body 101. The four sides and the bottom end of the negative pressure box body 101 are closed, and the top of the negative pressure box body 101 is open. A negative pressure box sealing cover 102 is detachably provided on the top of the negative pressure box body 101. A sealing ring 103 is provided at the connection between the negative pressure box body 101 and the negative pressure box sealing cover 102. The enclosed space surrounded by the negative pressure box body 101 and the negative pressure box sealing cover 102 is a negative pressure chamber 104; the negative pressure box 1 is a rectangular cube structure, the length of the negative pressure box 1 is 25 cm, the width of the negative pressure box 1 is 19 cm, and the height of the negative pressure box 1 is 23 cm; the thickness of the negative pressure box body 101 is 2 cm, and the thickness of the negative pressure box sealing cover 102 is 2.5 cm.

[0022] A pipe joint installation hole 105 is opened in the middle position of the negative pressure box sealing cover 102, and a pipe joint 2 is detachably installed in the pipe joint installation hole 105; a muffler 3 is installed on one lateral end of the pipe joint 2, and one end of an exhaust pipe 4 is connected to the other lateral end of the pipe joint 2, and the other end of the exhaust pipe 4 is connected to one lateral side of the vacuum pump 5, and the other lateral side of the vacuum pump 5 is connected to a vacuum pump motor 6; the negative pressure chamber 104 is connected to the air inlet end of the pipe joint 2, the air outlet end of the pipe joint 2 is connected to the air inlet end of the exhaust pipe 4, and the air outlet end of the exhaust pipe 4 is connected to the vacuum pump 5.

[0023] In this embodiment, the negative pressure box 1 with a closed structure can not only provide a structural basis for eliminating bubbles in the coal rock light sheet, but also prevent the irritating odor generated during the gelation process from interfering with the experimenters.

[0024] In this embodiment, the size design of the negative pressure box 1 can meet the size of the mold for preparing samples of coal rock powder and coal light slices. At the same time, since the size of the negative pressure box 1 is not too large, it is easy to carry and operate.

[0025] In this embodiment, the silencer 3 is made of porous sound-absorbing material. After the silencer 3 is fixed on the pipe joint 2, when the noise sound wave enters the silencer 3, part of the sound energy is converted into heat energy by friction in the pores of the porous material and dissipated, so that the sound wave is weakened and the sound silencing effect is achieved, thereby avoiding the interference of noise to the experimenter.

[0026] In this embodiment, since the vacuum pump 5 needs to generate a higher suction speed and a larger suction volume during operation, it is necessary to be equipped with a vacuum pump motor 6 with a higher rotation speed and a larger power output to ensure that the vacuum pump 5 can quickly vacuum the negative pressure box 1, thereby achieving the purpose of eliminating bubbles.

[0027] As a specific solution of this embodiment, Figure 1 and Figure 2 As shown, a first control valve 7 is provided on the top surface of one side of the pipe joint 2, and a second control valve 8 is provided on the top surface of the other side of the pipe joint 2. In this embodiment, when performing a vacuum operation, the first control valve 7 needs to be closed and the second control valve 8 needs to be opened; during the coal rock optical sheet preparation process, the first control valve 7 and the second control valve 8 are both in a closed state; when the preparation is completed, the second control valve 8 needs to be closed and the first control valve 7 needs to be opened, so that the negative pressure chamber 104 is connected to the outside and the air pressure is restored.

[0028] As a specific solution of this embodiment, Figure 1 and Figure 2 As shown, a pressure gauge 9 is installed at the middle position of the top of the pipe joint 2. In this embodiment, the pressure gauge 9 is convenient for the experimenter to observe and judge whether the air pressure in the negative pressure chamber 104 reaches the air pressure required for the experiment.

[0029] As a specific solution of this embodiment, the negative pressure box body 101 and the negative pressure box body 101 are made of acrylic material. Compared with the stainless steel material of the traditional vacuum barrel, the acrylic material has good toughness, is not easy to be damaged, and has high transparency. It can realize the visualization of the vacuuming process to prevent the sample from overflowing.

[0030] The working process of the utility model is as follows:

[0031] First, install the silencer 3 on the pipe joint 2, then install the pipe joint 2 on the negative pressure box sealing cover 102, and then connect the pipe joint 2 with the exhaust pipe 4, the vacuum pump 5 and the vacuum pump motor 6 in sequence.

[0032] Second, place the mold containing the coal rock sample and the unsaturated polyester resin cold glue adhesive into the negative pressure box body 101, cover the negative pressure box sealing cover 102, and ensure that the negative pressure box 1 is in a sealed state.

[0033] Third, open the second control valve 8, start the vacuum pipe 4 and the vacuum pump 5 to perform vacuum operation, and set the vacuum rate to 4L / s. After about 3S, the air pressure in the negative pressure chamber 104 reaches -0.1MPa. At this time, close the second control valve 8 to maintain the negative pressure state in the negative pressure chamber 104, thereby achieving rapid defoaming.

[0034] Fourth, after the preparation of the coal rock light sheet is completed, open the first control valve 7, and after the air pressure in the negative pressure chamber 104 is consistent with the outside, open the negative pressure box sealing cover 102 and take out the prepared coal rock light sheet.

Claims

1. A cold glue mounting device for preparing coal rock light slices, characterized in that: The negative pressure box (1) comprises a negative pressure box body (101), the four sides and the bottom of the negative pressure box body (101) are closed, the top of the negative pressure box body (101) is open, a negative pressure box sealing cover (102) is detachably provided on the top of the negative pressure box body (101), a sealing ring (103) is provided at the connection between the negative pressure box body (101) and the negative pressure box sealing cover (102), and the closed space enclosed by the negative pressure box body (101) and the negative pressure box sealing cover (102) is a negative pressure chamber (104); The negative pressure box (1) is a rectangular cubic structure, the length of the negative pressure box (1) is 25 cm, the width of the negative pressure box (1) is 19 cm, the height of the negative pressure box (1) is 23 cm, the thickness of the negative pressure box body (101) is 2 cm, and the thickness of the negative pressure box sealing cover (102) is 2.5 cm; A pipe joint installation hole (105) is provided in the middle position of the negative pressure box sealing cover (102), and a pipe joint (2) is detachably installed in the pipe joint installation hole (105); a muffler (3) is installed on one lateral end of the pipe joint (2), and one end of an exhaust pipe (4) is connected to the other lateral end of the pipe joint (2), and the other end of the exhaust pipe (4) is connected to one lateral side of a vacuum pump (5), and a vacuum pump motor (6) is connected to the other lateral side of the vacuum pump (5); the negative pressure chamber (104) is connected to the air inlet end of the pipe joint (2), the air outlet end of the pipe joint (2) is connected to the air inlet end of the exhaust pipe (4), and the air outlet end of the exhaust pipe (4) is connected to the vacuum pump (5).

2. The cold glue embedding device for preparing coal rock light sheets according to claim 1, characterized in that: A first control valve (7) is arranged on the top surface of one side of the pipeline joint (2), and a second control valve (8) is arranged on the top surface of the other side of the pipeline joint (2).

3. The cold glue embedding device for preparing coal rock light sheets according to claim 1, characterized in that: A pressure gauge (9) is installed at the middle position of the top end of the pipe joint (2).

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