Anti-skid and anti-explosion gland of sample pressing machine mold

Abstract

The utility model relates to the technical field of sample presses, in particular to an anti-skid and anti-explosion gland of a sample press mould, which comprises a gland body arranged at the top of a mould jacket, the gland body is provided with a first cylinder and a second cylinder which are coaxially arranged, and the diameter of the first cylinder is smaller than that of the second cylinder. The outer wall of the first cylinder is provided with an air guide groove extending in the radial direction, one end of the air guide groove extends to the end face, away from the second cylinder, of the first cylinder, and the other end of the air guide groove extends to the end face, close to the first cylinder, of the second cylinder. During sample pressing, compressed air in the sample pressing cavity can be discharged through the air guide groove in the gland body, so that the compressed air in the sample pressing cavity is prevented from being gathered.

Description

Technical Field

[0001] This utility model relates to the field of sample pressing machine technology, specifically to a sample pressing machine mold anti-slip and explosion-proof pressure cap. Background Technology

[0002] Hydraulic sample presses are primarily used as specialized equipment for X-ray fluorescence spectroscopy analysis (pellet preparation). Existing hydraulic sample presses, such as the one disclosed in invention patent application number CN202010018623.7, include a pressure table and a sample press. The sample press includes a pressure table for containing materials and an adjusting bolt for fixing a mold cap against the pressure table. The pressure table includes a base, a mold head, and a mold sleeve mounted on the base. The mold sleeve is fitted over the mold head to form a receiving groove for containing materials.

[0003] Existing hydraulic sample presses lack an exhaust structure, which can easily lead to high pressure in the sample pressing chamber containing the material. The higher the working pressure, the greater the risk of damage during operation. In particular, the air mixed in the powder has a large destructive force after compression. In high-pressure tablet presses, reinforced and thickened alloy steel is often used to make the pressure cap to prevent it from being damaged and burst by compressed air during sample pressing. However, the excessive weight of the pressure cap makes it inconvenient for frequent operation and it is easy for it to slip and injure the sample preparation personnel. Utility Model Content

[0004] The purpose of this invention is to provide a non-slip and explosion-proof pressure cover for a sample pressing machine mold, which can prevent compressed air from accumulating in the sample pressing chamber, thereby solving the defects mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A non-slip and explosion-proof pressure cover for a sample pressing machine mold includes a pressure cover body disposed on the top of the mold outer sleeve. The pressure cover body has a first cylinder and a second cylinder arranged coaxially. The diameter of the first cylinder is smaller than the diameter of the second cylinder. An air guide groove is provided on the outer wall of the first cylinder, extending radially therein. One end of the air guide groove extends to the end face of the first cylinder away from the second cylinder, and the other end of the air guide groove extends to the end face of the second cylinder close to the first cylinder.

[0007] As a further improvement, the air guide grooves are provided at multiple even intervals around the circumference of the first cylinder.

[0008] As a further improvement, the cover body is made of magnetic steel.

[0009] As a further improvement, the second cylinder is provided with an exhaust groove on the end face near the first cylinder, one end of the exhaust groove is connected to the air guide groove, and the other end of the exhaust groove extends to the outer circumferential surface of the second cylinder.

[0010] As a further improvement, the inner wall of the mold jacket is provided with a limiting protrusion that matches the air guide groove. When the limiting protrusion is inserted into the air guide groove, an exhaust gap is formed between the limiting protrusion and the inner wall of the air guide groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. When pressing the sample, the compressed air in the pressing chamber can be discharged through the air guide groove on the pressing cap body, which avoids the accumulation of compressed air in the pressing chamber and prevents the pressing cap body from bursting and flying out and injuring people when it is removed. There is no need to increase the weight of the pressing cap body to improve its strength, making it more flexible and convenient to use.

[0013] 2. The cap body is made of magnetic steel. When the magnetic cap body is placed on the metal surface of the top of the operating table or on the smooth steel swing arm, it has a certain adsorption force, which can prevent the cap body from accidentally slipping and injuring the sample preparation personnel. In addition, the magnetic cap body has high compressive strength and higher safety.

[0014] 3. The second cylinder is provided with an exhaust groove on the end face near the first cylinder. When pressing the sample, the compressed air in the pressing chamber can be discharged from the pressing chamber through the air guide groove and the exhaust groove in sequence, resulting in higher exhaust efficiency.

[0015] 4. The upper inner wall of the mold jacket has integrally formed limiting protrusions that correspond one-to-one with the air guide grooves. When pressing the sample, the compressed air in the pressing chamber can be discharged through the exhaust gap between the limiting protrusions and the inner wall of the air guide grooves. At the same time, the limiting protrusions can prevent the pressing cap body from rotating when the adjusting bolt is removed after pressing the sample, avoid wear on the sample pressing tablet, and improve the pass rate of the sample pressing tablet. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the cap body according to Embodiment 1 of this utility model;

[0019] Figure 3 yes Figure 2 A diagram showing the view from below;

[0020] Figure 4 This is a schematic diagram of the structure of the cap body according to Embodiment 2 of this utility model;

[0021] Figure 5 This is a schematic diagram of the mold outer sleeve of Embodiment 2 of this utility model;

[0022] Figure 6 This is a top view schematic diagram of the mold outer sleeve of Embodiment 2 of this utility model;

[0023] Figure 7 yes Figure 6 A magnified view of part I.

[0024] In the figure: 1-Adjusting bolt; 2-Cap body; 201-First cylinder; 202-Second cylinder; 203-Air guide groove; 204-Exhaust groove; 3-Mold outer sleeve; 4-Nested; 5-Sample pressing cavity; 6-Pressure head; 7-Operating table; 8-Steel swing arm; 9-Rotating shaft; 10-Limit screw; 11-Limit protrusion; 12-Exhaust gap. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. 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.

[0026] Example 1:

[0027] like Figures 1 to 3As shown, a non-slip and explosion-proof pressure cover for a sample pressing machine mold includes a pressure cover body 2 disposed on the top of a mold outer sleeve 3. It also includes an operating table 7, the top of which has a metal surface. A nesting 4 is provided inside the operating table 7, and the mold outer sleeve 3 is embedded within the nesting 4. The mold outer sleeve 3 is a hollow cylindrical tube. A pressure head 6, driven by a hydraulic mechanism, is located at the lower end of the mold outer sleeve 3. The pressure cover body 2 covers the top of the mold outer sleeve 3. The pressure cover body 2 has a first cylinder 201 and a second cylinder 202 coaxially arranged. The second cylinder 202 is located at the upper end of the first cylinder 201. The diameter of the first cylinder 201 is smaller than the diameter of the second cylinder 202. The first cylinder 201 extends downward into the mold outer sleeve 3, and the outer diameter of the first cylinder 201 is the same as the inner diameter of the mold outer sleeve 3. A sample pressing cavity 5 is provided inside the mold outer sleeve 3 between the first cylinder 201 and the pressure head 6. The upper part of the mold outer sleeve 3... The end edge supports the bottom of the second cylinder 202, and the top of the second cylinder 202 is pressed downward by the adjusting bolt 1. A steel swing arm 8 that can swing in the horizontal plane is installed on the operating table 7. A vertically extending rotating shaft 9 is fixedly installed on the top of the operating table 7. One end of the steel swing arm 8 is rotatably installed on the rotating shaft 9, and the other end of the steel swing arm 8 is screwed with a limiting screw 10 for pressing against the operating table. The adjusting bolt 1 is screwed into the middle of the steel swing arm 8 and presses the pressure cap body 2 downward.

[0028] During sample pressing, add an appropriate amount of boric acid to the pressing chamber 5, place the mineral powder on the surface of the boric acid in the pressing chamber 5, cover with the pressing cap body 2, tighten the adjusting bolt 1, and start the hydraulic mechanism to drive the pressing head 6 to rise for sample pressing. After the sample pressing is completed, slowly loosen the adjusting bolt 1, remove the pressing cap body 2 and place it on the operating table 7 or the steel swing arm 8, remove the sample pressing sheet, clean the pressing cap body 2, the pressing chamber 5, and the pressing head 6, and prepare for the next sample pressing.

[0029] The outer wall of the first cylinder 201 is provided with a radially extending air guide groove 203. One end of the air guide groove 203 extends to the end face of the first cylinder 201 away from the second cylinder 202, and the other end extends to the end face of the second cylinder 202 near the first cylinder 201. During sample compression, the compressed air in the sample compression chamber 5 can be discharged through the air guide groove 203, preventing the compressed air from accumulating in the sample compression chamber 5 and preventing the cap body 2 from bursting and flying out and injuring people when it is removed.

[0030] To improve exhaust efficiency, multiple air guide grooves 203 are provided at even intervals around the circumference of the first cylinder 201.

[0031] In this embodiment, the capping body 2 is made of magnetic steel. When the magnetic capping body 2 is placed on the metal surface of the top of the operating table 7 or on the smooth steel swing arm 8, it has a certain adsorption force, which can prevent the capping body 2 from accidentally slipping and injuring the sample preparation personnel. In addition, the magnetic capping body 2 has high compressive strength.

[0032] Example 2:

[0033] like Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that an exhaust groove 204 is provided on the end face of the second cylinder 202 near the first cylinder 201. The exhaust groove 204 corresponds one-to-one with the air guide groove 203. The exhaust groove 204 extends radially along the second cylinder 202. One end of the exhaust groove 204 is connected to the upper end of the corresponding air guide groove 203, and the other end of the exhaust groove 204 extends to the outer circumferential surface of the second cylinder 202. During sample compression, the compressed air in the sample compression chamber 5 can be discharged from the sample compression chamber 5 sequentially through the air guide groove 203 and the exhaust groove 204, resulting in higher exhaust efficiency.

[0034] Example 3:

[0035] like Figures 5 to 7 As shown, the difference between this embodiment and Embodiment 1 is that the upper inner wall of the mold jacket 3 is integrally formed with a limiting protrusion 11 corresponding to the air guide groove 203. The width of the limiting protrusion 11 is the same as the width of the air guide groove 203. The thickness of the limiting protrusion 11 along the radial direction of the first cylinder 201 is less than the thickness of the air guide groove 203 along the radial direction of the first cylinder 201. Thus, when the limiting protrusion 11 is inserted into the air guide groove 203, an exhaust gap 12 is formed between the limiting protrusion 11 and the inner wall of the air guide groove 203.

[0036] When the first cylinder 201 is inserted into the upper end of the mold jacket 3, the limiting protrusion 11 is inserted into the corresponding air guide groove 203. The compressed air in the sample pressing chamber 5 can be discharged through the exhaust gap 12 between the limiting protrusion 11 and the inner wall of the air guide groove 203. At the same time, the limiting protrusion 11 can prevent the pressure cap body 2 from rotating when the adjusting bolt 1 is removed after the sample pressing is completed, thus avoiding wear of the sample pressing tablet and improving the pass rate of the sample pressing tablet.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A non-slip and explosion-proof pressure cap for a sample pressing machine mold, characterized in that: The device includes a pressure cap body disposed on the top of the mold outer sleeve. The pressure cap body has a first cylinder and a second cylinder arranged coaxially. The diameter of the first cylinder is smaller than the diameter of the second cylinder. The outer wall of the first cylinder is provided with an air guide groove extending radially therefrom. One end of the air guide groove extends to the end face of the first cylinder away from the second cylinder, and the other end of the air guide groove extends to the end face of the second cylinder close to the first cylinder.

2. The anti-slip and explosion-proof pressure cap for a sample pressing machine mold as described in claim 1, characterized in that: The air guide grooves are evenly spaced around the circumference of the first cylinder.

3. The anti-slip and explosion-proof pressure cap for a sample pressing machine mold as described in claim 1, characterized in that: The cover body is made of magnetic steel.

4. The anti-slip and explosion-proof pressure cap for a sample pressing machine mold as described in claim 1, characterized in that: The second cylinder has an exhaust groove on its end face near the first cylinder. One end of the exhaust groove is connected to the air guide groove, and the other end of the exhaust groove extends to the outer circumferential surface of the second cylinder.

5. The anti-slip and explosion-proof pressure cap for a sample pressing machine mold as described in claim 1, characterized in that: The inner wall of the mold jacket is provided with a limiting protrusion that matches the air guide groove. When the limiting protrusion is inserted into the air guide groove, an exhaust gap is formed between the limiting protrusion and the inner wall of the air guide groove.

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