Tool for rapidly detecting diameter of sand setting and ore discharging opening of cyclone and use method

Abstract

The invention discloses a tool for rapidly detecting the diameter of a sand setting and ore discharging opening of a cyclone and a using method, and relates to the field of mining equipment measurement. The tool comprises an inner rod, an outer sleeve rod, a handheld handle, a radial expansion measuring mechanism and a locking mechanism, the inner rod is provided with scale marks, and the outer sleeve rod is sleeved on the outer side of the inner rod. The radial expansion measuring mechanism is composed of a first supporting sleeve, a second supporting sleeve, a plurality of arc-shaped contact pieces and a connecting rod. Through relative sliding of the outer sleeve rod and the inner rod, the supporting sleeves are driven to be close to or away from each other, so that the arc-shaped contact pieces synchronously expand or contract in the radial direction. The tool is simple in structure, convenient to operate, accurate in measurement and high in efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mine machinery equipment measurement, in particular to a tool for quickly detecting the diameter of a sand discharge port of a cyclone and a use method thereof. BACKGROUND

[0002] In a mine beneficiation operation, a cyclone is a commonly used classification device, which relies on the rotation of the ore pulp inside to achieve classification according to the difference in centrifugal force experienced by the particles, with coarse particles being discharged from the sand discharge nozzle and fine particles being discharged through the overflow pipe. Since the sand particles are relatively coarse, the sand discharge port (sand discharge nozzle) is easily worn, and an increase in its diameter will seriously affect the classification accuracy and efficiency of the cyclone. Therefore, it is crucial to regularly measure the sand discharge port and replace the sand discharge nozzle in a timely manner when the wear exceeds the specified range to ensure normal production.

[0003] The existing measurement methods have many drawbacks:

[0004] Manual touch judgment method: completely dependent on the experience of the operator, highly subjective, with a large measurement error, and unable to obtain accurate measurement data.

[0005] Simple disc measurement method: a set of standard size discs are inserted into the sand discharge port to determine the diameter of the discharge port by the largest disc that can pass through. This method has low accuracy and requires multiple sets of discs of different sizes, which is inconvenient to operate.

[0006] Disassembly and measurement method of the sand discharge nozzle: although the accuracy is high, the measurement process is time-consuming, labor-intensive, and low in efficiency. In a continuous production mine operation environment, frequent disassembly of the equipment will interrupt the production process, causing unnecessary economic losses.

[0007] Based on the above status, there is an urgent need for a special tool that can overcome the defects of existing technology and quickly, accurately and conveniently measure the diameter of the sand discharge port of the cyclone. SUMMARY

[0008] The purpose of the present application is to provide a tool for quickly detecting the diameter of the sand discharge port of a cyclone and a use method thereof to solve the problems of difficulty in measuring the diameter of the sand discharge port of a cyclone, low efficiency, and large error in the prior art, and to provide a simple structure, convenient operation, accurate measurement, and high efficiency cyclone sand discharge port diameter detection tool.

[0009] To achieve the above purpose, the present application provides the following solutions:

[0010] The application provides a tool for quickly detecting the diameter of a sand discharging opening of a cyclone, which comprises an inner rod, an outer sleeve rod, a hand-held handle, a radial expansion measuring mechanism and a locking mechanism, the inner rod is provided with a first end and a second end arranged oppositely, and a scale line is arranged on the inner rod; the outer sleeve rod is coaxially sleeved on the outer side of the inner rod and can axially slide and keep the position after sliding; the hand-held handle is fixedly connected to the first end of the inner rod away from the outer sleeve rod; the radial expansion measuring mechanism comprises a first supporting sleeve, a second supporting sleeve, a plurality of arc-shaped contact pieces, a plurality of first connecting rods and a plurality of second connecting rods, the first supporting sleeve is detachably fixedly connected to the end of the outer sleeve rod away from the hand-held handle, the first end of the inner rod is detachably fixedly connected to the second supporting sleeve through the outer sleeve rod, one end of the first connecting rod is hingedly connected to the first supporting sleeve, the other end is hingedly connected to the inner side of the arc-shaped contact piece, one end of the second connecting rod is hingedly connected to the second supporting sleeve, the other end is hingedly connected to the inner side of the arc-shaped contact piece, so that the first supporting sleeve and the second supporting sleeve are brought close to or away from each other in the process of the outer sleeve rod sliding relative to the inner rod, and then each arc-shaped contact piece is synchronously brought to radial expansion or contraction movement, and the locking mechanism is arranged at the end of the outer sleeve rod close to the hand-held handle to lock the position of the outer sleeve rod after sliding relative to the inner rod.

[0011] Preferably, the radial expansion measuring mechanism further comprises a first locking nut and a second locking nut, the end of the outer sleeve rod away from the hand-held handle is provided with a first mounting section, the end of the first mounting section away from the hand-held handle is provided with a first threaded section, the first supporting sleeve is sleeved on the first mounting section, the first locking nut is threadedly connected to the first threaded section to tightly lock the first supporting sleeve on the first mounting section, the end of the inner rod away from the hand-held handle is provided with a second mounting section, the end of the second mounting section away from the hand-held handle is provided with a second threaded section, the second supporting sleeve is sleeved on the second mounting section, and the second locking nut is threadedly connected to the second threaded section to tightly lock the second supporting sleeve on the second mounting section.

[0012] Preferably, the locking mechanism comprises a locking screw, the end of the outer sleeve rod close to the hand-held handle is provided with a threaded hole, the locking screw is threadedly connected to the threaded hole, and one end of the locking screw is used to extend into the outer sleeve rod and tightly press the inner rod to keep the relative position of the inner rod and the outer sleeve rod.

[0013] Preferably, the locking screw comprises a screw rod, a rotating handle and a locking block, the rotating handle is fixedly connected to one end of the screw rod, the locking block has a diameter larger than that of the screw rod, the locking block is fixedly connected to the other end of the screw rod, the screw rod is used for being screwed with the threaded hole, the inner side of the threaded hole is provided with an enlarged hole, and the locking block is arranged at the enlarged hole and can be extended out of the enlarged hole and abut against the inner rod under the driving of the screw rod.

[0014] Preferably, a plurality of hinged seats are further included, and the first connecting rod and the second connecting rod are both hingedly connected with the arc-shaped contact pieces through the hinged seats.

[0015] Preferably, the outer side surface curvature of the arc-shaped contact pieces is matched with the standard inner wall curvature of the to-be-measured cyclone grit discharge outlet.

[0016] Preferably, the number of the arc-shaped contact pieces is six, and the arc-shaped contact pieces are uniformly arranged along the circumferential direction of the inner rod.

[0017] Preferably, the minimum scale value of the scale line is 0.1 cm, and the starting zero point of the scale line corresponds to the outer contour edge of the arc-shaped contact pieces in the retracted state.

[0018] Preferably, the inner rod and the outer sleeve rod are both made of high-strength aluminum alloy material.

[0019] The application further provides a use method of the tool for quickly detecting the diameter of a cyclone grit discharge outlet.

[0020] S1: Align the radial expansion measuring mechanism with the cyclone grit discharge outlet, ensure that the arc-shaped contact pieces are in the retracted state, slowly extend the measuring mechanism into the interior of the discharge outlet by hand until the arc-shaped contact pieces reach the position to be measured;

[0021] S2: Pull the outer sleeve rod to make it axially slide relative to the inner rod, in the process, the first supporting sleeve and the second supporting sleeve are driven by the first connecting rod and the second connecting rod to move close to each other, thereby synchronously expanding the plurality of arc-shaped contact pieces until the outer side surfaces of all the arc-shaped contact pieces are tightly attached to the inner wall of the discharge outlet;

[0022] S3: Control the locking mechanism to keep the current relative position of the outer sleeve rod and the inner rod, so as to prevent the sliding from affecting the data accuracy during the measurement;

[0023] S4: Observe the scale line on the inner rod and read the scale value corresponding to the end of the outer sleeve rod, and the scale value is the diameter measurement value of the cyclone grit discharge outlet.

[0024] S5: After the measurement is completed, loosen the locking mechanism, reversely slide the outer sleeve rod to make the arc-shaped contact piece contract, then take the tool out of the ore discharge opening, and the whole detection operation is completed.

[0025] The present application has the following technical effects relative to the prior art:

[0026] The present application provides a tool for quickly detecting the diameter of a sand discharge opening of a cyclone and a use method thereof. The tool expands and contracts the arc-shaped contact piece through relative sliding of the inner rod and the outer sleeve rod, and realizes rapid and accurate measurement of the diameter of the ore discharge opening in cooperation with the locking mechanism and the scale line. The use method is simple to operate, and the detection can be completed without disassembling the equipment, effectively solving the problems of strong subjectivity, low efficiency and insufficient accuracy of the traditional measurement method, and providing reliable technical support for daily maintenance and classification efficiency guarantee of the mine cyclone. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0028] Figure 1 A schematic diagram of the tool for quickly detecting the diameter of a sand discharge opening of a cyclone provided by the present application;

[0029] Figure 2 A top view of the tool for quickly detecting the diameter of a sand discharge opening of a cyclone provided by the present application;

[0030] Figure 3 A side view of the tool for quickly detecting the diameter of a sand discharge opening of a cyclone provided by the present application;

[0031] Figure 4 A partial schematic diagram of the scale reading position of the tool for quickly detecting the diameter of a sand discharge opening of a cyclone provided by the present application;

[0032] Figure 5 A sectional view of the tool for quickly detecting the diameter of a sand discharge opening of a cyclone provided by the present application;

[0033] Figure 6 A partial sectional view of the locking screw position of the tool for quickly detecting the diameter of a sand discharge opening of a cyclone provided by the present application;

[0034] Figure 7 A partial sectional view of the radial expansion measurement mechanism of the tool for quickly detecting the diameter of a sand discharge opening of a cyclone provided by the present application;

[0035] Figure 8The application provides a schematic diagram of a tool for quickly detecting the contraction state of a sand discharging port diameter of a cyclone;

[0036] In the figure: 1, handheld handle, 2, inner rod, 3, locking screw, 4, outer sleeve rod, 5, arc contact sheet, 6, first support sleeve, 7, connecting rod, 8, first locking nut, 9, second support sleeve, 10, second locking nut, 11, hinged seat, 201, scale line, 301, screw rod, 302, locking block, 401, threaded hole. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0038] The application aims to provide a tool for quickly detecting the diameter of a sand discharging port of a cyclone and a use method, so as to solve the problems of difficult measurement, low efficiency and large error of the diameter of the sand discharging port of the cyclone in the prior art, and provide a tool for detecting the diameter of the sand discharging port of the cyclone, which has simple structure, is convenient to operate, is accurate in measurement and has high efficiency.

[0039] In order to make the above-mentioned purposes, features and advantages of the application more obvious and easy to understand, the application will be further described in detail below with reference to the drawings and specific embodiments.

[0040] Embodiment one

[0041] The embodiment provides a tool for quickly detecting the diameter of a sand discharging port of a cyclone, which comprises a handle, a first support sleeve, a second support sleeve, a connecting rod, a locking nut, a locking block, a scale line, a threaded hole, a locking screw, an inner rod, an outer sleeve rod, an arc contact sheet and a hinged seat. Figures 1-7The tool shown, including: inner rod 2, outer sleeve rod 4, handheld handle 1, radial expansion measuring mechanism and locking mechanism, the inner rod 2 has a first end and a second end arranged oppositely, the inner rod 2 is provided with a scale line 201; the outer sleeve rod 4 is coaxially sleeved on the outer side of the inner rod 2 and can slide axially and keep the position after sliding; the handheld handle 1 is fixedly connected to the first end of the inner rod 2 away from the outer sleeve rod 4; the structure design makes the layout of each part of the tool reasonable, the coaxial sliding of the inner rod 2 and the outer sleeve rod 4 provides a basis for subsequent radial expansion measurement, the fixed connection of the handheld handle 1 facilitates the operator to hold and apply force, and facilitates the operation of the tool to measure work, and the setting of the scale line 201 provides an intuitive way for reading the measurement result. The radial expansion measuring mechanism includes a first support sleeve 6, a second support sleeve 9, a plurality of arc contact pieces 5, a plurality of first connecting rods 7 and a plurality of second connecting rods 7, the first support sleeve 6 is detachably fixedly connected to the end of the outer sleeve rod 4 away from the handheld handle 1, the first end of the inner rod 2 passes through the outer sleeve rod 4 and is detachably fixedly connected to the second support sleeve 9, one end of the first connecting rod 7 is hingedly connected to the first support sleeve 6, the other end is hingedly connected to the inner side of the arc contact piece 5, one end of the second connecting rod 7 is hingedly connected to the second support sleeve 9, the other end is hingedly connected to the inner side of the arc contact piece 5, so that in the process of sliding the outer sleeve rod 4 relative to the inner rod 2, the first support sleeve 6 and the second support sleeve 9 are brought closer or farther away from each other, and in turn drive each arc contact piece 5 to perform synchronous radial expansion or contraction movement, the locking mechanism is arranged at the end of the outer sleeve rod 4 close to the handheld handle 1 to lock the position of the outer sleeve rod 4 after sliding relative to the inner rod 2, the radial expansion measuring mechanism can accurately realize the synchronous radial expansion or contraction of the arc contact piece 5 through the connection relationship and movement mode of each part, and contact the inner wall of the cyclone sand discharge outlet and adapt to different diameter discharge outlets. The detachable fixed connection facilitates the maintenance and replacement of the parts. The setting of the locking mechanism ensures the stability of the relative position of the outer sleeve rod 4 and the inner rod 2 during measurement, thereby ensuring the accuracy of the measurement result.

[0042] In a preferred embodiment, the radial expansion measuring mechanism further comprises a first locking nut 8 and a second locking nut 10, the outer sleeve rod 4 is provided with a first mounting section at the end away from the hand-held handle 1, the first mounting section is provided with a first threaded section at the end away from the hand-held handle 1, the first supporting sleeve 6 is sleeved on the first mounting section, the first locking nut 8 is threadedly connected to the first threaded section to tightly lock the first supporting sleeve 6 on the first mounting section, the inner rod 2 is provided with a second mounting section at the end away from the hand-held handle 1, the second mounting section is provided with a second threaded section at the end away from the hand-held handle 1, the second supporting sleeve 9 is sleeved on the second mounting section, and the second locking nut 10 is threadedly connected to the second threaded section to tightly lock the second supporting sleeve 9 on the second mounting section. The first locking nut 8 and the second locking nut 10 further enhance the stability of the connection between the first supporting sleeve 6 and the second supporting sleeve 9. When the tool is used for a long time or is affected by external force, this threaded connection and tight locking mode can effectively prevent the supporting sleeve from loosening and shifting, and ensure the normal operation and measurement accuracy of the radial expansion measuring mechanism.

[0043] In a preferred embodiment, the locking mechanism comprises a locking screw 3, the outer sleeve rod 4 is provided with a threaded hole 401 at the end close to the hand-held handle 1, the locking screw 3 is threadedly connected to the threaded hole 401, and one end of the locking screw 3 is used to extend into the outer sleeve rod 4 and tightly lock the inner rod 2 to maintain the relative position of the inner rod 2 and the outer sleeve rod 4. This simple structure of the locking screw 3 can conveniently and quickly lock the relative position of the outer sleeve rod 4 and the inner rod 2 through threaded connection and tight locking of the inner rod 2. When the measurement position needs to be adjusted, the locking screw 3 can be loosened; when the position is determined for measurement, the locking screw 3 can be tightened to fix, which is simple and efficient in operation and ensures the stability of the tool structure during measurement.

[0044] In a preferred embodiment, the locking screw 3 comprises a screw rod 301, a rotating handle and a locking block 302, the rotating handle is fixedly connected to one end of the screw rod 301, the locking block 302 has a diameter larger than that of the screw rod 301, the locking block 302 is fixedly connected to the other end of the screw rod 301, the screw rod 301 is threadedly connected to the threaded hole 401, the inner side of the threaded hole 401 is provided with an enlarged hole, and the locking block 302 is arranged at the enlarged hole and can extend out of the enlarged hole to abut against the inner rod 2 under the driving of the screw rod 301. The rotating handle facilitates the rotation of the screw rod 301, increasing the convenience of operation. The locking block 302 has a diameter larger than that of the screw rod 301 and can abut against the inner rod 2 under the driving of the screw rod 301. This design makes the abutment more stable and firm, effectively preventing the relative displacement of the inner rod 2 and the outer sleeve rod 4 during measurement, and ensuring the reliability of the measurement result. The enlarged hole on the inner side of the threaded hole 401 provides a suitable space for the locking block 302, enhancing the rationality of the overall structure.

[0045] In a preferred embodiment, a plurality of hinged seats 11 are further included, and the first connecting rod 7 and the second connecting rod 7 are both hingedly connected with the arc-shaped contact piece 5 through the hinged seats 11. The arrangement of the hinged seats 11 makes the hinge between the first connecting rod 7 and the second connecting rod 7 and the arc-shaped contact piece 5 more flexible and smooth, and can better adapt to the angle change between the components during the radial expansion or contraction of the arc-shaped contact piece 5, thereby ensuring the continuity and stability of the movement and further improving the accuracy of the measurement operation.

[0046] In a preferred embodiment, the outer side curvature of the arc-shaped contact piece 5 is adapted to the standard inner wall curvature of the cyclone grit discharge outlet to be measured. The adaptation of the outer side curvature of the arc-shaped contact piece 5 to the standard inner wall curvature can make the arc-shaped contact piece 5 achieve better fitting effect when in contact with the inner wall of the discharge outlet. This can more accurately measure the inner diameter size of the cyclone grit discharge outlet, improve the measurement accuracy, and reduce the measurement error caused by poor contact.

[0047] In a preferred embodiment, the number of arc-shaped contact pieces 5 is six, and they are uniformly arranged along the circumferential direction of the inner rod 2. The six uniformly arranged arc-shaped contact pieces 5 can obtain data from multiple angles when in contact with the inner wall of the cyclone grit discharge outlet, and comprehensively and accurately reflect the inner diameter condition of the discharge outlet. Compared with the case of fewer numbers, the measurement result is more representative and accurate, and the uniform distribution of the layout also helps to ensure the balance of the overall force of the tool during measurement.

[0048] In a preferred embodiment, the minimum scale value of the scale line 201 is 0.1 cm, and the starting zero point of the scale line 201 corresponds to the outer contour edge of the arc-shaped contact piece 5 in the contracted state. The smaller minimum scale value of 0.1 cm can meet the demand of high-precision measurement. The starting zero point of the scale line 201 corresponds to the outer contour edge of the arc-shaped contact piece 5 in the contracted state, which facilitates the operator to directly read the scale value to obtain the inner diameter of the discharge outlet after the measurement is completed, without the need for additional measurement or conversion, making the measurement process more intuitive and simple.

[0049] In a preferred embodiment, the inner rod 2 and the outer sleeve rod 4 are both made of high-strength aluminum alloy material. The high-strength aluminum alloy material has the characteristics of lighter weight and higher strength. The use of this material to make the inner rod 2 and the outer sleeve rod 4 can reduce the overall weight of the tool, making it easier for the operator to hold and operate for a long time, and reducing the labor intensity. On the other hand, the high strength meets the requirements of the structure strength of the tool during use, ensuring that the tool can withstand certain external forces without deformation, thereby ensuring the accuracy and reliability of the measurement.

[0050] Embodiment two

[0051] The application also provides a method for using the tool for quickly detecting the diameter of a sand discharging opening of a cyclone, as shown in Embodiment I, which comprises the following steps:

[0052] S1: align the radial expansion measuring mechanism with the sand discharging opening of the cyclone, ensure that the arc-shaped contact pieces 5 are in the contracted state, slowly extend the measuring mechanism into the sand discharging opening by holding the handle 1 until the arc-shaped contact pieces 5 reach the position to be measured;

[0053] S2: slide the outer sleeve rod 4 relative to the inner rod 2 by pulling, in the process, the first support sleeve 6 and the second support sleeve 9 are driven by the first connecting rod 7 and the second connecting rod 7 to approach each other, thereby synchronously expanding the plurality of arc-shaped contact pieces 5 until the outer sides of all the arc-shaped contact pieces 5 are closely attached to the inner wall of the sand discharging opening;

[0054] S3: control the locking mechanism to keep the current relative position of the outer sleeve rod 4 and the inner rod 2, so as to prevent the sliding from affecting the data accuracy during the measurement;

[0055] S4: observe the scale line 201 on the inner rod 2 and read the scale value corresponding to the end of the outer sleeve rod 4, which is the diameter measurement value of the sand discharging opening of the cyclone;

[0056] S5: after the measurement is completed, loosen the locking mechanism, reversely slide the outer sleeve rod 4 to make the arc-shaped contact pieces 5 contract, then take out the tool from the sand discharging opening, and complete the whole detection operation.

[0057] The principles and implementation manners of the application are described by using specific examples, and the above embodiment is only used to help understand the method and core idea of the application; meanwhile, for those skilled in the art, according to the idea of the application, the specific implementation manners and application ranges will be changed. In conclusion, the content of the specification should not be understood as the limitation of the application.

Claims

1. A tool for quickly detecting the diameter of a cyclone grit discharge spout, characterized by: The utility model provides a kind of radial expansion measuring device, including: Inner rod, the first end and the second end of relative arrangement are provided with scale line on the inner rod; Outer sleeve rod, the outer sleeve rod is coaxially sleeved on the outer side of the inner rod and can be relatively axially slid and keep the position after sliding; Hand-held handle, the hand-held handle is fixedly connected to the first end of the inner rod away from the outer sleeve rod; Radial expansion measuring mechanism, the first support sleeve is detachably fixedly connected with the outer sleeve rod away from the end of hand-held handle, the first end of the inner rod passes through the outer sleeve rod and is detachably fixedly connected with the second support sleeve, one end of the first connecting rod is hinged connection with the first support sleeve, the other end is hinged connection with the inner side of the arc contact piece, one end of the second connecting rod is hinged connection with the second support sleeve, the other end is hinged connection with the inner side of the arc contact piece, to drive the first support sleeve and the second support sleeve to approach or away from each other in the process that the outer sleeve rod slides relative to the inner rod, in turn, drive each arc contact piece to carry out radial expansion or contraction movement synchronously; Locking mechanism, the locking mechanism is arranged on the end of the outer sleeve rod close to the hand-held handle to lock the position of the outer sleeve rod after sliding relative to the inner rod.

2. The tool for quick detection of the grit discharge spout diameter of a cyclone according to claim 1, characterized in that: The radial expansion measuring mechanism further includes a first locking nut and a second locking nut, the outer sleeve rod away from the hand-held handle one end is provided with a first mounting section, the first mounting section away from the hand-held handle one end is provided with a first threaded section, the first support sleeve is used for sleeved on the first mounting section, the first locking nut is used for threaded connection on the first threaded section to lock the first support sleeve tightly on the first mounting section, the inner rod away from the hand-held handle one end is provided with a second mounting section, the second mounting section away from the hand-held handle one end is provided with a second threaded section, the second support sleeve is used for sleeved on the second mounting section, the second locking nut is used for threaded connection on the second threaded section to lock the second support sleeve tightly on the second mounting section.

3. The tool for rapid detection of the grit discharge spout diameter of a cyclone according to claim 1, characterized in that: The locking mechanism includes a locking screw, the outer sleeve rod close to the hand-held handle one end is provided with a threaded hole, the locking screw is used for threaded connection with the threaded hole, and one end of the locking screw is used for extending into the outer sleeve rod and tightly pressing the inner rod to keep the relative position of the inner rod and the outer sleeve rod.

4. The tool for rapid detection of the grit discharge spout diameter of a cyclone according to claim 3, characterized in that: The locking screw includes a lead screw, a rotating handle and a locking block, the rotating handle is fixedly connected to one end of the lead screw, the locking block is fixedly connected to the other end of the lead screw, the diameter of the locking block is greater than the diameter of the lead screw, the lead screw is used for threaded connection with the threaded hole, the inner side of the threaded hole is provided with an enlarged hole, the locking block is arranged at the enlarged hole and can be extended out of the enlarged hole and abutted with the inner rod under the driving of the lead screw.

5. The tool for quickly detecting the diameter of the grit discharge spout of a cyclone according to claim 1, characterized in that: A plurality of hinged seats are further included, and the first connecting rod and the second connecting rod are hingedly connected with the arc-shaped contact pieces through the hinged seats.

6. The tool for quickly detecting the diameter of the grit discharge spout of a cyclone according to claim 1, characterized in that: The outer side curvature of the arc-shaped contact pieces is matched with the standard inner wall curvature of the sand discharge port of the cyclone to be measured.

7. The tool for quickly detecting the diameter of the grit discharge spout of a cyclone according to claim 1, characterized in that: The number of the arc-shaped contact pieces is six, and the arc-shaped contact pieces are uniformly arranged along the circumferential direction of the inner rod.

8. The tool for quickly detecting the diameter of the grit discharge spout of a cyclone according to claim 1, characterized in that: The minimum scale value of the scale line is 0.1 cm, and the starting zero point of the scale line corresponds to the outer contour edge of the arc-shaped contact pieces in the contracted state.

9. The tool for quickly detecting the diameter of the grit discharge spout of a cyclone according to claim 1, characterized in that: The inner rod and the outer sleeve rod are made of high-strength aluminum alloy material.

10. A method of using the tool for rapid detection of the diameter of the grit discharge spout of a cyclone according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: S1: align the radial expansion measuring mechanism with the sand discharge port of the cyclone, ensure that the arc-shaped contact pieces are in the contracted state, slowly extend the measuring mechanism into the inside of the sand discharge port by hand holding the handle until the arc-shaped contact pieces reach the position to be measured; S2: slide the outer sleeve rod relative to the inner rod by pulling the outer sleeve rod, in the process, the first supporting sleeve and the second supporting sleeve are driven by the first connecting rod and the second connecting rod to approach each other, thereby promoting the radial expansion of the plurality of arc-shaped contact pieces synchronously until the outer side surfaces of all the arc-shaped contact pieces are closely attached to the inner wall of the sand discharge port; S3: control the locking mechanism to keep the current relative position of the outer sleeve rod and the inner rod, and prevent the sliding from affecting the data accuracy during the measurement; S4: observe the scale line on the inner rod, read the scale value corresponding to the end of the outer sleeve rod, and the scale value is the diameter measurement value of the sand discharge port of the cyclone; S5: after the measurement is completed, loosen the locking mechanism, reversely slide the outer sleeve rod to make the arc-shaped contact pieces contract, then take out the tool from the sand discharge port, and complete the entire detection operation.

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