Energy dissipation type slurry diversion sampling device

Abstract

The present invention relates to an energy dissipation type slurry diversion sampling device, comprising: an energy dissipation component and a diversion sampling component composed of a bottom plate, a feed trough, an inner trough and an outer trough; the feed trough, the inner trough and the outer trough are all hollow cylinders; the bottom side wall of the feed trough is provided with four small openings, the bottom side wall of the inner trough is provided with four diversion openings, wherein the small openings are distributed at positions directly opposite to the diversion openings, the cross-sectional area of ​​the small openings is smaller than the bottom area of ​​the feed trough and smaller than the cross-sectional area of ​​the diversion openings, and the cross-sectional area of ​​the diversion openings is smaller than the bottom area of ​​the inner trough; the height of the inner trough> the height of the feed trough> the height of the outer trough; the bottom area of ​​the feed trough is smaller than the bottom area of ​​the inner trough, and the bottom area of ​​the inner trough is smaller than the bottom area of ​​the outer trough; the diversion sampling component is a diversion sampling component composed of a hollow cube and a sampling tube; the hollow cube is sealed and fixed on the outer wall of the outer trough, the top of the hollow cuboid is slightly higher than the upper edge of the outer trough, and the sampling tube is sealed and fixed on the outside of the hollow cube and can achieve drainage. The present invention can fully stir the slurry, and the sampling representativeness is high.

Description

Technical Field

[0001] The invention patent relates to an energy dissipation type slurry diversion sampling device, belonging to the field of sampling equipment. Background Art

[0002] In the field of mineral processing, in order to ensure the processing quality of products, it is necessary to conduct real-time online detection of slurry concentration. However, due to various factors in the industrial field, such as low slurry concentration underflow concentration, low slurry desludging efficiency, and uneven grinding operations, the uniformity of the slurry will be affected, which will lead to the unrepresentative results of slurry concentration detection. Therefore, energy dissipation technology is used in the slurry concentration detection device for real-time sampling to ensure that the samples taken are uniform and the test results are representative.

[0003] As a suspended solid, slurry will settle and accumulate if the flow rate is too slow, which will block the sampling device. If the flow rate is too fast, the slurry will have a greater impact on the sampling device, making the sampling device less stable. The existing sampling devices do not take this factor or actual situation into consideration. At the same time, the existing sampling devices generally have problems such as complex structure, inconvenient maintenance, radioactivity, and inability to compare and analyze the samples taken, which is not conducive to their promotion and use. Summary of the invention

[0004] The purpose of the present invention is to provide an energy dissipation type slurry diversion sampling device to solve the technical problems of the existing sampling devices, such as poor stability, complex structure, inconvenient maintenance, radioactivity and inability to perform comparative analysis on the samples taken.

[0005] The technical solution proposed by the present invention to solve the above problems is:

[0006] An energy dissipation type slurry diversion sampling device comprises: an energy dissipation component and a diversion sampling component composed of a bottom plate, a feed trough, an inner trough and an outer trough; the feed trough, the inner trough and the outer trough are all in the shape of a hollow cylinder; the feed trough, the inner trough and the outer trough are all sealed and fixed on the bottom plate and the bottom of the feed trough, the inner trough and the outer trough is closed through the bottom plate; the bottom side wall of the feed trough is provided with four small openings, the bottom side wall of the inner trough is provided with four diversion openings, wherein the small openings are distributed at positions directly opposite to the diversion openings, the cross-sectional area of ​​the small openings is smaller than the bottom area of ​​the feed trough and smaller than the cross-sectional area of ​​the diversion openings, and the cross-sectional area of ​​the diversion openings is smaller than the bottom area of ​​the inner trough; the height relationship of the feed trough, the inner trough and the outer trough is: the height of the inner trough> the height of the feed trough> the height of the outer trough; the bottom area of ​​the feed trough is smaller than the bottom area of ​​the inner trough, and the bottom area of ​​the inner trough is smaller than the bottom area of ​​the outer trough.

[0007] The shunt sampling assembly is composed of a hollow cube and a sampling tube; the hollow cube is sealed and fixed on the outer wall of the outer groove, the top opening of the hollow cube is not connected to the outer groove, the bottom is connected and fixed to the outer groove in a circular arc, and the remaining sides are straight lines, the top of the hollow cuboid is slightly higher than the upper edge of the outer groove, and the sampling tube is sealed and fixed to the outside of the hollow cube and can achieve drainage.

[0008] The relationship between the slurry flow rate Q at the bottom of the feed trough and the inner trough and the area A of the small opening and the diversion opening is given by the hole flow relationship formula:

[0009]

[0010] Calculation, where: the height of the discharge pipe, Q is the small mouth flow, A is the area of ​​the small mouth / diversion port, μ is the flow loss coefficient taken as 0.61, and g is the acceleration of gravity.

[0011] The feed trough, inner trough and outer trough are in the shape of a cylinder / cube / cuboid.

[0012] The feed trough, inner trough and outer trough are in the shape of cylinders; the side length of the hollow cube is equal to the length of the straight line opposite the central angle corresponding to the arc length of the fixed connection part between the hollow cube and the lower end of the outer trough, and the arc length of the lower end is equal to the arc length of the outer trough corresponding to the side length of the top of the hollow cube.

[0013] The area of ​​the sampling tube is arbitrary.

[0014] The feed trough, inner trough and outer trough are in the shape of cylinders; the sampling assembly is a plurality of baffles vertically sealed and fixed in an equal-divided manner on the outer wall of the outer trough, and the relationship between the spacing of the baffles and the number and size of the baffles is:

[0015] 2πR-n*x

[0016] Where: R is the radius of the outer groove, n is the number of baffles, the height of the baffle is arbitrary, and the width is x.

[0017] The sealing and fixing is achieved by full welding.

[0018] When the sampling device is in use, the discharge pipe at the industrial site is inserted into the feed trough but does not touch the bottom of the trough. After the raw ore slurry is introduced into the feed trough through the discharge pipe and hits the bottom of the trough, it will scour along the bottom of the feed trough to form turbulence, and flow into the inner trough along the small opening at the bottom. Because the opening area of ​​the small opening is small, part of the ore slurry will overflow from the top of the feed trough and overflow into the inner trough. The ore slurry flowing into the inner trough from the small opening at the bottom of the feed trough collides with the ore slurry overflowing from the top of the feed trough into the inner trough in the inner trough to form a water jump, and form a strong turbulence at the bottom of the inner trough. The ore slurry in the inner trough flows into the outer trough from the bottom diversion port. Because the opening area of ​​the diversion port is large, all the ore slurry in the inner trough flows into the outer trough from the bottom diversion port. At this time, the ore slurry in the outer trough can maintain a steady rise and overflow the outer trough, and is finally intercepted by the sampling assembly.

[0019] The working process of the device includes energy dissipation process, impact mixing process, energy dissipation compensation process, and diversion sampling process. The purpose of energy dissipation is to reduce the impact of the kinetic energy of the slurry on the sampling device and improve the stability of the device. The purpose of the impact mixing process is to improve the uniformity of the sample in the slurry and ensure the representativeness of the sampling. The purpose of energy dissipation compensation is to prevent the slurry from being deposited and blocked in the sampling device due to too slow flow rate. The purpose of diversion is to achieve equal interception of the taken slurry, so that the slurry at different sampling points can be tested and analyzed, and the results obtained at different sampling points can be compared.

[0020] The working principles of the device include throttling principle, Bernoulli principle and underflow energy dissipation principle.

[0021] The throttling principle is: when the fluid flows in the pipeline, the flow rate will decrease (increase) after passing through the valve and channel with increased (decreased) cross-sectional area. The present invention realizes a step-by-step reduction in the flow rate of the slurry in the process of flowing from the feed trough to the outer trough by constructing a feed trough, an inner trough, and an outer trough with gradually increasing bottom areas, thereby playing a throttling and energy dissipation role on the slurry and improving the stability of the device. The present invention constructs a small opening and a diversion opening with a cross-sectional area smaller than the bottom area of ​​the feed trough and the inner trough on the side wall at the bottom of the feed trough and the inner trough, thereby realizing an increase in the flow rate of the slurry in the process of flowing from the feed trough to the inner trough and from the inner trough to the outer trough, thereby playing an energy dissipation compensation role and preventing the slurry from being deposited and blocked due to too slow flow rate.

[0022] Bernoulli's principle states that the sum of the kinetic energy, gravitational potential energy, and pressure potential energy of a fluid is a constant when it is flowing. That is, the energy change of a free-flowing fluid is expressed as follows:

[0023]

[0024] Among them, P is the pressure potential energy of the fluid, ρ is the fluid density, g is the gravitational acceleration, and h is the fluid depth.

[0025] It can be seen from the formula that when the fluid flows freely, its energy is conserved. When the fluid moves upward, its gravitational potential energy increases and its pressure potential energy decreases. According to the Bernoulli principle, the fluid at a deep place will form a pressure difference with the fluid at a shallow place due to its greater pressure potential energy, which will cause the flow rate of the shallow fluid to be slower than the flow rate of the deep fluid. The present invention constructs a structure in which the height of the inner groove is greater than the height of the feed groove, so that the depth of the slurry flowing in the feed groove is less than the depth of the slurry in the inner groove, and the pressure potential energy of the slurry in the feed groove is greater than the pressure potential energy of the slurry in the inner groove, so that a pressure difference is formed between the feed groove and the inner groove, thereby keeping the slurry flow rate in the inner groove less than the slurry flow rate in the feed groove, which plays a role in dissipating the Bernoulli pressure difference of the slurry in the inner groove, and further improves the stability of the sampling device.

[0026] The bottom flow energy dissipation principle utilizes the bottom flow energy dissipation method in hydraulics. It can be known from this method that by constructing a well-type structure, when the falling fluid falls into the well, it collides up and down in the well to form a water jump. The strong flocculent generated by the water jump can be realized to dissipate the kinetic energy generated in the falling process of the fluid. The present invention constructs a small opening with a small area and a feed trough with a low height at the bottom of the feed trough, so that the slurry in the feed trough is divided into two parts and flows into the inner trough, and collides in the inner trough, thereby forming a strong flocculent at the bottom of the inner trough, which not only stirs the slurry and improves the uniformity of the slurry density, but also reduces the slurry flow rate in the inner trough and improves the stability of the device. The present invention takes a larger area of ​​the diversion port at the bottom of the inner trough, with the purpose of making all the slurry flow from the bottom of the inner trough to the outer trough. Prevent the unstirred slurry at the top of the inner trough from overflowing from the top to the outer trough, thereby affecting the uniformity of the slurry density in the outer trough.

[0027] The principle of diversion uses the relationship between the central angle of a circle and the arc length, the side length and internal angle of a regular polygon, and the circumference and radius in mathematics.

[0028] L=α*r

[0029] Where L is the arc length and α is the central angle.

[0030] It can be seen that for the same circle, its circumference is a constant 2πr. When the central angle α is equal, the arc length L corresponding to the central angle is equal, and the straight line corresponding to the arc length L is also equal. By constructing a regular polygon with equal internal angles and side lengths in the form of auxiliary lines within the circle, the arc length of the circumference corresponding to each side of the regular polygon is equal. By fixing a hollow cube with a side length equal to the side length of the regular polygon outside the circle, making the connection between the cube and the outer groove the arc length corresponding to the internal regular polygon, and the remaining side lengths equal to the side lengths of the internal regular polygon, it is possible to intercept a majority of the slurry flowing out of the entire circumference.

[0031] According to the above principle, the present invention can effectively reduce the kinetic energy of the slurry in the sampling device, improve the stability of the sampling device, and at the same time improve the uniformity of the slurry density and the representativeness of the sampling. The sampled slurry can also be equally divided and intercepted, thereby realizing comparative analysis of the slurries at different sampling points, and the obtained results are more reliable.

[0032] In actual use, the present invention has good working effect, achieves the purpose of the invention, and solves the existing problems.

[0033] In summary, the beneficial effects of the present invention are that it has a simple structure, will not be blocked, has no radioactive source, can perform comparative analysis on the samples taken, can fully stir the slurry, has higher sampling representativeness, is more practical, and is conducive to promotion and use. As long as it involves the poor sampling representativeness caused by uneven slurry density and the blockage problem that occurs during the sampling process, the present invention can solve it. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the energy dissipation type slurry diversion sampling device of the present invention, which is marked as: 1 feed trough, 2 inner trough, 3 outer trough, 6 bottom plate, 7 hollow cuboid, 8 sampling tube.

[0035] Figure 2 It is a plan view of the fixed position of the sampling assembly of the present invention, marked as: 3 outer groove, 7 hollow cube, 8 sampling tube.

[0036] Figure 3 It is a three-dimensional schematic diagram of the fixed position of the sampling component of the present invention.

[0037] Figure 4 It is a schematic diagram of the structure of the feed trough 1 of the energy dissipation type slurry diversion sampling device of the present invention, marked as: 1 feed trough, 4 small openings.

[0038] Figure 5 This is an example diagram for calculating the area of ​​small opening 4.

[0039] Figure 6 It is a schematic diagram of the structure of the inner tank 2 of the energy dissipation type slurry diversion sampling device of the present invention, marked as: 2 inner tank, 5 diversion port.

[0040] Figure 7 , Figure 8 This is a schematic diagram of the split flow sampling principle of the energy dissipation type slurry split flow sampling device of the present invention.

[0041] Fig. 9 This is an example diagram of an implementation of the energy dissipation type slurry diversion sampling device of the present invention, in which the following are marked: 7 hollow cuboid, 8 sampling tube, 3 outer groove, 9 baffle. The description of this diagram can be found at the end of the specific implementation method. DETAILED DESCRIPTION

[0042] The overall structure and working principle of the present invention will be fully described below in conjunction with the accompanying drawings of the present invention.

[0043] Please refer to Figure 1 , a schematic diagram of the overall structure of an energy dissipation type slurry diversion sampling device, including a feed trough 1, an inner trough 2, an outer trough 3, a bottom plate 6, a hollow cube 7, and a sampling tube 8. The feed trough 1, the inner trough 2, and the outer trough 3 are fixed on the bottom plate 6 by welding, and are nested with each other. The welding order is feed trough 1, inner trough 2, and outer trough 3. The relationship between the bottom area and height of each trough is respectively feed trough 1 bottom area < inner trough 2 bottom area < outer trough 3 bottom area, inner trough 2 height > outer trough 3 height > feed trough 1 height. The hollow cube 7 is fixed to the outer wall of the outer trough 3 by welding, and its top is slightly higher than the top of the outer trough 3. The sampling tube 8 is fixed to the outside of the hollow cube by welding and can realize the drainage of the slurry in the outer trough 3. The plan view of the fixed position of the sampling component at the outer trough 3 is shown in Figure 2 As shown, the sampling assembly is fixed in the outer tank 3 in a three-dimensional diagram as shown Figure 3 shown.

[0044] The bottom wall of the feed trough 1 has four symmetrical openings 4 in the shape of square, circle but not limited to the above shapes. In this example, a rectangular shape is used as an example. The schematic diagram of the structure of the feed trough 1 is shown in FIG. Figure 4 The area of ​​the small opening 4 is determined by the actual situation of the industrial site. For example, the bottom of a large thickener in a mineral processing plant is used as an example. The schematic diagram is as follows Figure 5 The height difference between the top and bottom of the thickener in the ore dressing plant (the height of the discharge pipe) is h. Now it is necessary to dissipate the energy of the high-speed slurry flowing at the bottom of the thickener. If the slurry flow rate at the small port at the bottom of the feed trough 1 is required to be Q, then according to the hole flow relationship

[0045]

[0046] In the formula, Q is the small mouth flow, A is the small mouth area, μ is the flow loss coefficient which is taken as 0.61, and g is the gravitational acceleration, which is used to calculate the area A of the small mouth 4.

[0047] The bottom wall of the inner tank 2 is provided with four symmetrically positioned diversion openings 5, which may be square or circular in shape but are not limited to the above shapes. In this example, a rectangular shape is used as an example. The schematic diagram of the structure of the inner tank 2 is shown in FIG. Figure 6 The principle of area selection is the same as that of small opening 4.

[0048] When the sampling device is in use, the discharge pipe at the industrial site is inserted into the feed trough 1 but does not touch the bottom of the trough. After the raw ore pulp is introduced into the feed trough 1 through the discharge pipe and hits the bottom of the trough, it will be washed along the bottom of the feed trough to form floccules, and flow into the inner trough 2 along the small opening at the bottom. Because the opening area of ​​the small opening is small, part of the ore pulp will overflow from the top of the feed trough 1 and fall into the inner trough 2. The ore pulp flowing into the inner trough 2 from the small opening at the bottom of the feed trough 1 and the ore pulp overflowing from the top of the feed trough 1 and falling into the inner trough 2 collide in the inner trough 2 to form a hydraulic jump, and form a strong floccules at the bottom of the inner trough 2. The ore pulp in the inner trough 2 flows into the outer trough from the bottom diversion port. Because the opening area of ​​the diversion port is large, all the ore pulp in the inner trough 2 flows into the outer trough from the bottom diversion port. At this time, the ore pulp in the outer trough can maintain a steady rise and overflow the outer trough, and is finally intercepted by the sampling assembly.

[0049] The working process of the device includes energy dissipation process, impact mixing process, energy dissipation compensation process and diversion sampling process.

[0050] The working principles of the device include throttling principle, Bernoulli principle and underflow energy dissipation principle.

[0051] The throttling principle is: when the fluid flows in the pipeline, the flow rate will decrease (increase) after passing through the valve and channel with increased (decreased) cross-sectional area. The present invention realizes the step-by-step reduction of the slurry flow rate in the process of flowing from the feed trough 1 to the outer trough 3 by constructing the feed trough 1, the inner trough 2, and the outer trough 3 with gradually increasing bottom areas, which plays a role of throttling and dissipating energy for the slurry and improves the stability of the device. The present invention constructs a small opening 4 and a diversion opening 5 with a cross-sectional area smaller than the bottom area of ​​the feed trough 1 and the inner trough 2 at the bottom of the feed trough 1 and the inner trough 2, so that the flow rate of the slurry increases in the process of flowing from the feed trough 1 to the inner trough 2 and from the inner trough 2 to the outer trough 3, which plays a role of energy dissipation compensation and prevents the slurry from settling and clogging.

[0052] Bernoulli's principle states that the sum of the kinetic energy, gravitational potential energy, and pressure potential energy of a fluid is a constant when it is flowing. That is, the energy change of a free-flowing fluid is expressed as follows:

[0053]

[0054] Among them, P is the pressure potential energy of the fluid, ρ is the fluid density, g is the gravitational acceleration, and h is the height of the fluid relative to the ground.

[0055] It can be seen from this formula that when the fluid flows freely, its energy is conserved. When the fluid moves upward, its gravitational potential energy increases and its pressure potential energy decreases. According to the Bernoulli principle, during the fluid's ascent, its kinetic energy decreases, that is, the flow rate decreases. The present invention constructs a structure in which the height of the inner tank 2 is greater than the height of the feed tank 1, so that the pressure potential energy of the slurry in the inner tank 2 is less than the pressure potential energy of the slurry in the feed tank 1, thereby forming a pressure difference, making the kinetic energy of the slurry in the inner tank 2 less than the kinetic energy of the slurry in the feed tank 1, thereby reducing the flow rate of the slurry in the inner tank 2. It serves to dissipate the Bernoulli pressure difference of the slurry in the inner tank 2, further improving the stability of the sampling device.

[0056] The bottom flow energy dissipation principle utilizes the bottom flow energy dissipation method in hydraulics. It can be known from this method that by constructing an energy dissipation well with a diversion hole at the bottom, the falling fluid can collide up and down in the well when it falls into the well, forming a water jump, and finally realizing the strong flocculent generated by the water jump to dissipate the kinetic energy generated in the falling process of the fluid. The present invention constructs a small opening 4 with a small area at the bottom of the feed trough 1 and a feed trough 1 with a low height, so that the slurry in the feed trough 1 is divided into two parts and flows into the inner trough 2, and collides in the inner trough 2, thereby forming a strong flocculent at the bottom of the inner trough 2, which not only plays the role of stirring the slurry and improving the uniformity of the slurry density, but also plays the role of reducing the slurry flow rate in the inner trough 2 and improving the stability of the device. The present invention takes a larger area of ​​the diversion port 5 at the bottom of the inner trough 2, in order to make all the slurry flow from the bottom of the inner trough 2 to the outer trough. Prevent the unstirred slurry at the top of the inner trough 2 from overflowing from the top to the outer trough, thereby affecting the uniformity of the slurry density in the outer trough 3.

[0057] The flow division utilizes the mathematical relationship between the radius and circumference of a circle, the interior angle and side length of a regular polygon, and the central angle and arc length.

[0058] According to the arc length formula

[0059] L=α*r

[0060] Where L is the arc length and α is the central angle.

[0061] It can be seen that for the same circle, its circumference is a constant 2πr. When the central angle α is equal, the arc length L corresponding to the central angle is equal, and the straight line corresponding to the arc length L is also equal. By constructing a regular polygon with equal internal angles and side lengths in the form of auxiliary lines in the circle, the arc length of the circumference corresponding to each central angle and each side length of the regular polygon is equal. At this time, by fixing a hollow cube with an arc length equal to the arc length corresponding to the regular polygon in the circle outside the circle and the other side lengths equal to the side lengths of the regular polygon in the circle, it is possible to intercept more than one-tenth of the slurry flowing out of the entire circle. The specific schematic diagram of equal division is shown as follows. Figure 7 , 8This example is described by dividing the outer groove 3 into four equal parts. As shown in the figure, the top of the outer groove 3 is regarded as a circle. An auxiliary line is made vertically and horizontally through the center of the circle. Then the auxiliary line is connected with the outer circle to form a square. The four corners of the square are all 90 degrees, and the arc length corresponding to each side is Where r is the radius of the outer groove 3, and the length of each side of the square inside the circle is By welding an arc with a length of The lengths of the remaining sides are The hollow cube can capture one quarter of the slurry overflowing from the three circumferences of the outer groove.

[0062] In summary, the advantages of the present invention are that it has a simple structure, will not be blocked, has no radioactive source, can perform comparative analysis on the samples taken, can fully stir the slurry, has higher sampling representativeness, is more practical, and is conducive to promotion and use. As long as it involves the poor sampling representativeness caused by uneven slurry density and the blockage problem that occurs during the sampling process, the present invention can solve it.

[0063] Finally, it should be noted that the scope of protection of the present invention is not limited to the above discussion, especially the principle of diversion, regardless of any diversion method used, such as Fig. 9 The method of using baffles 9 to split the flow is shown. In this example, the radius of the outer groove is R, and the circumference is 2πR. The equal division method is to fix n baffles with arbitrary baffle height, width x, and spacing of 2πR-n*x on the dome of the outer groove with a radius of R by welding. The baffles are perpendicular to the outer groove. This method actually uses the relationship between the circumference of a circle and the arc length to achieve splitting, so it is similar to Fig. 9 The diversion method used should also be within the scope of protection of the present invention.

Claims

1. An energy dissipation slurry diversion sampling device, characterized in that The sampling device comprises an energy dissipation component and a flow splitting sampling component consisting of a bottom plate, a feed trough (1), an inner trough (2), and an outer trough (3); the feed trough (1), the inner trough (2), and the outer trough (3) are all in the shape of hollow cylinders; The feed trough (1), the inner trough (2), and the outer trough (3) are all sealed and fixed on the bottom plate (6), and the bottom of the feed trough (1), the inner trough (2), and the outer trough (3) are sealed by the bottom plate (6); The bottom side wall of the feed trough (1) is provided with four small openings (4), and the bottom side wall of the inner trough (2) is provided with four diversion openings (5), wherein the small openings (4) are arranged opposite to the diversion openings (5), the cross-sectional area of ​​the small openings (4) is smaller than the bottom area of ​​the feed trough (1) and smaller than the cross-sectional area of ​​the diversion openings (5), and the cross-sectional area of ​​the diversion openings (5) is smaller than the bottom area of ​​the inner trough; The height relationship between the feed trough (1), the inner trough (2) and the outer trough (3) is as follows: the height of the inner trough (2) is greater than the height of the feed trough (1), which is greater than the height of the outer trough (3); The bottom area of ​​the feed trough (1) is smaller than the bottom area of ​​the inner trough (2), and the bottom area of ​​the inner trough (2) is smaller than the bottom area of ​​the outer trough (3); The flow splitting sampling assembly consists of a hollow cube (7) and a sampling tube (8). The top of the hollow cube (7) is slightly higher than the upper edge of the outer tank (3). The sampling tube (8) is sealed and fixed to the outside of the hollow cube (7) and can achieve drainage.

2. The energy dissipation type slurry diversion sampling device according to claim 1 is characterized in that: The hollow cube (7) is sealed and fixed on the outer wall of the outer groove (3); the top opening of the hollow cube (7) is not connected to the outer groove (3); the bottom portion connected and fixed to the outer groove (3) is an arc, and the remaining sides are straight lines.

3. The energy dissipation type slurry diversion sampling device according to claim 2 is characterized in that: The relationship between the slurry flow rate Q at the bottom of the feed trough and the area A of the small opening (4) is given by the orifice flow relationship: Calculation, where: h is the height of the discharge pipe, Q is the small port flow rate, A is the area of ​​the small orifice / diversion port, μ is the flow loss coefficient and is taken as 0.

61. g is the acceleration due to gravity.

4. The energy dissipation type slurry diversion sampling device according to claim 2 is characterized in that: The feed trough (1), the inner trough (2), and the outer trough (3) are all cylindrical, cube-shaped, or rectangular in shape.

5. The energy dissipation type slurry diversion sampling device according to any one of claims 2 to 4, characterized in that: The feed trough (1), the inner trough (2) and the outer trough (3) are cylindrical in shape; The side length of the hollow cube (7) is equal to the length of the straight line opposite the central angle corresponding to the arc length of the circular arc of the fixed connection part between the hollow cube (7) and the lower end of the outer groove (3), and the arc length of the lower end is equal to the arc length of the outer groove corresponding to the side length of the top of the hollow cube; the area of ​​the sampling tube (8) is arbitrary.

6. The energy dissipation type slurry diversion sampling device according to claim 1 is characterized in that: The feed trough (1), the inner trough (2), and the outer trough (3) are in the shape of a cylinder; a baffle 9 is used for flow diversion, wherein the radius of the outer trough is R and the circumference is 2πR; the sampling assembly is formed by vertically sealing and fixing N baffles (9) at the dome of the outer trough with a radius of R in an evenly divided manner on the upper edge of the outer wall of the outer trough (3) by welding; the width of the baffle is x, and the spacing between the baffles (9) is 2πR-n*x, which is the number of baffles (9).

7. The energy dissipation type slurry diversion sampling device according to any one of claims 1 to 4 or claim 6, characterized in that: The sealing and fixing is achieved by full welding.

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