A flow test device for variable frequency submersible pumps used in mines

Abstract

The present invention relates to the field of water pump flow testing, and in particular to a flow testing device for a variable frequency submersible pump for mining. The technical problem is that the current measurement operation will affect the drainage efficiency of the submersible pump, it is inconvenient to compare two adjacent flow rates, and the flow change of the submersible pump cannot be intuitively understood. A flow testing device for a variable frequency submersible pump for mining includes a submersible pump body, a mounting plate, a hard pipe and a hose, etc.; a hose is installed on the water outlet of the submersible pump body, and a hard pipe is installed on the mounting plate, and one end of the hard pipe is connected to the hose. The present invention controls the electric slider to move downward, and the electric slider drives the connecting plate, the upper rack and the lower rack to move downward, and the clean water is discharged into the temporary storage tube from the opening at the bottom of the three-way pipe, and the lower gear rotates 90 degrees to drive the vertical hole ball valve body to rotate 90 degrees. The operator observes the water level in the temporary storage tube through the transparent observation plate, and can test the flow of the submersible pump. When the flow of the submersible pump is small, the operator can repair the submersible pump.

Description

Technical Field

[0001] The invention relates to the field of water pump flow testing, in particular to a mine variable frequency submersible pump flow testing device. Background Art

[0002] Submersible electric pumps for mining are mainly used for drainage of central pump rooms in coal mines, emergency drainage after flooding in coal mines, or drainage for re-mining. Due to their small diameter and light weight, they are explosion-proof in coal mines with high gas concentrations and have a wider range of applications.

[0003] Flow rate is also called pumping volume, which refers to the amount of water delivered by a mining submersible pump over a period of time, generally measured in m3 / h or L / s per unit time.

[0004] When draining a mine, it is necessary to test the flow of the submersible pump regularly in order to understand the working condition of the submersible pump and avoid the submersible pump failure affecting the drainage of the mine. Currently, when testing the flow of the submersible pump, the submersible pump must be turned off first, and then a measuring device is installed at the end of the drainage. Then the submersible pump is started to pump water, and the flow is manually calculated through the measuring device. The data of this time must also be recorded for comparison with the next flow. After the test is completed, the submersible pump must be turned off first, and then the measuring device must be disassembled. After the measuring device is disassembled, the submersible pump must be started again. Such frequent disassembly and assembly seriously affects the working efficiency of the submersible pump, and it is not convenient to compare two adjacent flow rates, and it is difficult to intuitively understand the flow changes of the submersible pump. Summary of the invention

[0005] In order to overcome the shortcomings that the current measurement operation will affect the drainage efficiency of the submersible pump, it is inconvenient to compare two adjacent flow rates, and the flow change of the submersible pump cannot be intuitively understood, the purpose of the present invention is to provide a mining variable frequency submersible pump flow testing device, which can reduce the impact of the test operation on the drainage efficiency of the submersible pump, facilitate the comparison of two adjacent flow rates, and more intuitively understand the flow change of the submersible pump.

[0006] Technical solution: A flow test device for a variable frequency submersible pump for mining, comprising a submersible pump body, a mounting plate, a hard pipe, a hose, a testing mechanism and a driving mechanism. A hose is installed on the water outlet of the submersible pump body, a hard pipe is installed on the mounting plate, one end of the hard pipe is connected to the hose, a testing mechanism is provided between the mounting plate and the hard pipe, a driving mechanism is provided between the mounting plate and the testing mechanism, and the driving mechanism is used to drive the testing mechanism to test the flow of the submersible pump.

[0007] As an improvement of the above scheme, the testing mechanism includes a transparent observation plate, a temporary storage tube, a tee, an upper rotating shaft, a curved hole ball valve body, a lower tube, a lower rotating shaft and a vertical hole ball valve body. A tee is installed at the other end of the hard tube, and the hard tube is connected to the tee. A lower tube is installed on the mounting plate, and a temporary storage tube is installed between the tee and the lower tube. A connecting hole is opened on the upper part of the temporary storage tube, and a transparent observation plate is embedded on each side of the temporary storage tube. A curved hole ball valve body is rotatably provided in the tee, an upper rotating shaft is rotatably provided on one side of the tee, and one end of the upper rotating shaft is connected to the curved hole ball valve body. A vertical hole ball valve body is rotatably provided in the lower tube, and a lower rotating shaft is rotatably provided on one side of the lower tube, and one end of the lower rotating shaft is connected to one side of the vertical hole ball valve body.

[0008] As an improvement of the above scheme, the driving mechanism includes a slide rail, an electric slider, a connecting plate, an upper rack, an upper gear, a lower rack and a lower gear. The slide rail is installed on one side of the mounting plate, and an electric slider is slidably provided on the slide rail. The connecting plate is installed on the electric slider, and an upper rack is installed on the upper side of the connecting plate. The upper gear is installed on the other end of the upper rotating shaft, and the upper rack is meshed with the upper gear. The lower rack is installed on the lower side of the connecting plate, and the lower gear is installed on the other end of the lower rotating shaft, and the lower rack is meshed with the lower gear.

[0009] As an improvement of the above solution, the transparent observation plate is made of tempered glass.

[0010] As an improvement of the above scheme, an indicating mechanism is also included. The indicating mechanism is arranged between the temporary storage tube and the hard pipe. The indicating mechanism is used to more accurately indicate the flow rate of the submersible pump. The indicating mechanism includes a connecting frame, a floating plate, an indicating ring and a scale bar. Two connecting frames are slidably installed on the temporary storage tube. A floating plate is installed between one ends of the two connecting frames. The floating plate is located in the temporary storage tube. An indicating ring is installed between the other ends of the two connecting frames. The indicating ring is slidably connected to the hard pipe. A scale bar is provided on one side of the hard pipe, and the indicating ring points to the scale of the scale bar.

[0011] As an improvement of the above scheme, it also includes a locking mechanism, which is arranged on the mounting plate and the upper rack. The locking mechanism is used to fix the position of the indicator ring to make it more convenient to read the flow reading. A locking frame is slidably provided on one side of the mounting plate, and two springs are connected between the locking frame and the mounting plate. A driving frame is slidably provided in the mounting plate, and two protrusions are provided on the driving frame. The two protrusions on the driving frame are in contact with one side of the locking frame, and the other side of the locking frame is in contact with the connecting frame. The top of the driving frame is connected to one end of the upper rack.

[0012] As an improvement of the above solution, two rough surfaces are provided on the other side of the clamping frame.

[0013] As an improvement of the above scheme, it also includes a cleaning mechanism, which is arranged between the floating plate and the temporary storage tube. The cleaning mechanism is used to clean impurities in the temporary storage tube. The cleaning mechanism includes a curved pipe and an annular brush. The curved pipe is rotatably installed on the floating plate. An annular brush is installed at one end of the curved pipe. The annular brush is located below the floating plate. A number of bristles are evenly spaced at an outer circumference of the annular brush. The bristles on the annular brush are in contact with the inner side surfaces of the temporary storage tube and the transparent observation plate. A corrugated groove is opened on the inner side surface of the temporary storage tube. The other end of the curved pipe is located in the corrugated groove.

[0014] As an improvement of the above solution, a counterweight ball is also included, and a counterweight ball is installed on each of the two connecting frames.

[0015] Compared with the prior art: 1. The operator controls the electric slider to move downward, and the electric slider drives the connecting plate, the upper rack and the lower rack to move downward. The upper rack and the lower rack move downward to drive the upper gear and the lower gear to rotate. The rotation of the upper gear drives the upper rotating shaft and the curved hole ball valve body to rotate 180 degrees. After the curved hole ball valve body rotates 180 degrees, it is connected with the opening at the lower part of the tee pipe, so that the clean water is discharged into the temporary storage cylinder from the opening at the lower part of the tee pipe. The lower gear rotates 90 degrees to drive the vertical hole ball valve body to rotate 90 degrees. After the vertical hole ball valve body rotates 90 degrees, it is no longer connected with the lower through pipe, so that the clean water can be temporarily stored in the temporary storage cylinder; the vertical hole ball valve body rotates 90 degrees in the opposite direction and is connected with the lower through pipe again, so that the clean water temporarily stored in the temporary storage cylinder is discharged, so as to facilitate the next flow measurement; the operator observes the water level in the temporary storage cylinder through the transparent observation plate, so as to test the flow of the submersible pump. When the flow of the submersible pump is small, the operator can repair the submersible pump.

[0016] 2. The protrusion on the driving frame contacts one side of the positioning frame, and the spring is compressed accordingly. The positioning frame moves toward the connecting frame, and the positioning frame contacts the connecting frame again, thereby fixing the position of the connecting frame, thereby fixing the position of the indicator ring, and thus preventing the indicator ring from shaking under the floating effect of the water level, making it easier for the operator to read the reading indicated by the indicator ring on the scale bar. Even if the water is completely drained, the position of the indicator ring will not change. When performing the next flow test, the operator can directly read the reading indicated by the indicator ring on the scale bar and record the previous flow rate. This makes it convenient for the operator to compare two adjacent flow readings, and more intuitively understand the flow change of the submersible pump, and the working condition of the submersible pump at this time. By comparing the two adjacent flow readings, it is decided whether to overhaul the submersible pump.

[0017] 3. When the floating plate moves, the curved pipe and the annular brush are driven to move. The curved pipe will swing when it moves along the corrugated groove. The swing of the curved pipe drives the annular brush to swing. The bristles on the annular brush clean the inner side of the temporary storage tube and the transparent observation plate, so that the impurities on the inner side of the temporary storage tube and the transparent observation plate can be brushed off, reducing the residual impurities on the inner side of the temporary storage tube and the transparent observation plate, so that the floating plate moves more smoothly, and at the same time will not affect the transparency of the transparent observation plate, so that the operator can observe the water level through the transparent observation plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of a first partial three-dimensional structure of the present invention.

[0020] Figure 3 It is a schematic diagram of a second partial three-dimensional structure of the present invention.

[0021] Figure 4 It is a schematic diagram of the disassembly of the test mechanism and the drive mechanism parts of the present invention.

[0022] Figure 5 It is a three-dimensional structural schematic diagram of the hard tube and the indicating mechanism of the present invention.

[0023] Figure 6 It is a schematic diagram of the first cross-sectional three-dimensional structure of the present invention.

[0024] Figure 7 It is a schematic diagram of a second cross-sectional three-dimensional structure of the present invention.

[0025] Figure 8 It is a three-dimensional structural schematic diagram of the mounting plate and the locking mechanism of the present invention.

[0026] Fig. 9 It is a schematic diagram of the disassembly of the parts of the indicating mechanism and the locking mechanism of the present invention.

[0027] Fig.10 It is a schematic diagram of a first cross-sectional three-dimensional structure of the temporary storage tube and the cleaning mechanism of the present invention.

[0028] Fig.11 It is a schematic diagram of a second cross-sectional three-dimensional structure of the temporary storage tube and the cleaning mechanism of the present invention.

[0029] Names of the numbers in the figure: 1. Submersible pump body, 2. Mounting plate, 3. Hard pipe, 4. Hose, 51. Temporary storage tube, 510. Connecting hole, 52. Tee pipe, 53. Upper rotating shaft, 531. Bend hole ball valve body, 54. Lower through pipe, 55. Lower rotating shaft, 551. Vertical hole ball valve body, 6. Transparent observation plate, 71. Slide rail, 72. Electric slider, 73. Connecting plate, 74. Upper rack, 741. Upper gear, 75. Lower rack, 751. Lower gear, 81. Connecting frame, 82. Floating plate, 83. Indicator ring, 84. Scale bar, 91. Positioning frame, 92. Spring, 93. Driving frame, 101. Bend pipe, 102. Annular brush, 103. Corrugated groove, 12. Counterweight ball. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Embodiment 1: A flow test device for a variable frequency submersible pump for mining, such as Figure 1-Figure 4 As shown, it includes a submersible pump body 1, a mounting plate 2, a hard pipe 3, a hose 4, a testing mechanism and a driving mechanism. A hose 4 is installed on the water outlet of the submersible pump body 1 through a flange, a hard pipe 3 is installed on the mounting plate 2 through a flange, one end of the hard pipe 3 is connected to the hose 4, a testing mechanism is provided between the mounting plate 2 and the hard pipe 3, and a driving mechanism is provided between the mounting plate 2 and the testing mechanism. The driving mechanism is used to drive the testing mechanism to test the flow rate of the submersible pump.

[0032] The testing mechanism includes a transparent observation plate 6, a temporary storage tube 51, a three-way pipe 52, an upper rotating shaft 53, a curved hole ball valve body 531, a lower through pipe 54, a lower rotating shaft 55 and a vertical hole ball valve body 551. The other end of the hard tube 3 is installed with a three-way pipe 52 through a flange. The hard tube 3 is connected with the three-way pipe 52. The installation plate 2 is installed with a lower through pipe 54. The temporary storage tube 51 is installed between the three-way pipe 52 and the lower through pipe 54 through a flange. The upper part of the temporary storage tube 51 is opened. A connecting hole 510 and a transparent observation plate 6 are embedded on each of the two side surfaces of the temporary storage tube 51; a curved hole ball valve body 531 is rotatably provided in the tee pipe 52; an upper rotating shaft 53 is rotatably provided on one side of the tee pipe 52; one end of the upper rotating shaft 53 is connected to the curved hole ball valve body 531; a vertical hole ball valve body 551 is rotatably provided in the lower through pipe 54; a lower rotating shaft 55 is rotatably provided on one side of the lower through pipe 54; one end of the lower rotating shaft 55 is connected to one side of the vertical hole ball valve body 551.

[0033] The driving mechanism includes a slide rail 71, an electric slider 72, a connecting plate 73, an upper rack 74, an upper gear 741, a lower rack 75 and a lower gear 751. A slide rail 71 is installed on one side of the mounting plate 2. An electric slider 72 is slidably provided on the slide rail 71. The electric slider 72 will move up and down along the slide rail 71. A connecting plate 73 is installed on the electric slider 72. An upper rack 74 is installed on the upper side of the connecting plate 73. An upper gear 741 is installed on the other end of the upper rotating shaft 53 through a spline. The upper rack 74 meshes with the upper gear 741. A lower rack 75 is installed on the lower side of the connecting plate 73. A lower gear 751 is installed on the other end of the lower rotating shaft 55 through a spline. The lower rack 75 meshes with the lower gear 751.

[0034] The material of the transparent observation plate 6 is tempered glass.

[0035] Initially, the hard pipe 3 is connected to the opening on the upper part of the three-way pipe 52 through the curved hole ball valve body 531. The operator starts the submersible pump body 1 to work. The submersible pump body 1 extracts water in the mine cave, and the water is discharged through the hose 4, the hard pipe 3, the curved hole ball valve body 531 and the opening on the upper part of the three-way pipe 52. The lower pipe 54 is connected to the temporary storage cylinder 51 through the vertical hole ball valve body 551. When the flow rate of the submersible pump needs to be tested, the operator controls the electric slider 72 to move downward, and the electric slider 72 drives the connecting plate 73, the upper rack 74 and the lower rack 75 to move downward, and the upper rack 74 and the lower rack 75 moves downward to drive the upper gear 741 to rotate 180 degrees and the lower gear 751 to rotate 90 degrees. The upper gear 741 rotates to drive the upper shaft 53 and the curved hole ball valve body 531 to rotate 180 degrees. After the curved hole ball valve body 531 rotates 180 degrees, it communicates with the opening at the lower part of the three-way pipe 52, so that the clean water is discharged from the opening at the lower part of the three-way pipe 52 into the temporary storage cylinder 51. The lower gear 751 rotates 90 degrees to drive the vertical hole ball valve body 551 to rotate 90 degrees. After the vertical hole ball valve body 551 rotates 90 degrees, it is no longer connected with the lower through pipe 54, so that the temporary storage cylinder 51 can temporarily store clean water. After a certain time, the operator adjusts the electric slider 72 to move upward, and the electric slider 72 drives the connecting plate 73, the upper rack 74 and the lower rack 75 to move upward. The upper rack 74 and the lower rack 75 move upward to drive the upper gear 741 to rotate 180 degrees in the opposite direction and the lower gear 751 to rotate 90 degrees in the opposite direction. The upper gear 741 rotates to drive the upper shaft 53 and the curved hole ball valve body 531 to rotate 180 degrees in the opposite direction. After the curved hole ball valve body 531 rotates 180 degrees, it is connected with the opening at the upper part of the three-way pipe 52, and the water flows through the hose 4, the hard pipe 3, the curved hole ball valve body 531 and the upper part of the three-way pipe 52 again. The water is discharged from the opening, and the lower gear 751 rotates in the opposite direction by 90 degrees, driving the vertical hole ball valve body 551 to rotate in the opposite direction by 90 degrees. The vertical hole ball valve body 551 rotates in the opposite direction by 90 degrees and then communicates with the lower through pipe 54 again, so that the clean water temporarily stored in the temporary storage cylinder 51 is discharged, so as to facilitate the next flow measurement. The operator observes the water level in the temporary storage cylinder 51 through the transparent observation plate 6, which can indicate the amount of water temporarily stored in the temporary storage cylinder 51 within a specified time, and can test the flow of the submersible pump. When the flow of the submersible pump is small, the operator can repair the submersible pump. After the water in the mine is drained, the operator turns off the submersible pump.

[0036] Embodiment 2: Based on embodiment 1, Figure 5-Figure 9As shown, an indicating mechanism is also included, which is arranged between the temporary storage tube 51 and the hard tube 3. The indicating mechanism is used to more accurately indicate the flow rate of the submersible pump. The indicating mechanism includes a connecting frame 81, a floating plate 82, an indicating ring 83 and a scale bar 84. Two connecting frames 81 are slidably installed on the temporary storage tube 51. The two connecting frames 81 will slide up and down along the temporary storage tube 51. A floating plate 82 is installed between one ends of the two connecting frames 81. The floating plate 82 is located in the temporary storage tube 51. An indicating ring 83 is installed between the other ends of the two connecting frames 81. The indicating ring 83 is slidably connected to the hard tube 3. The indicating ring 83 will slide up and down along the hard tube 3. A scale bar 84 is provided on one side of the hard tube 3, and the indicating ring 83 points to the scale of the scale bar 84.

[0037] It also includes a locking mechanism, which is arranged on the mounting plate 2 and the upper rack 74. The locking mechanism is used to fix the position of the indicator ring 83, which makes it easier to read the flow reading. A locking frame 91 is slidably provided on one side of the mounting plate 2, and the locking frame 91 will slide along the mounting plate 2. Two springs 92 are connected between the locking frame 91 and the mounting plate 2. A driving frame 93 is slidably provided in the mounting plate 2, and two protrusions are provided on the driving frame 93. The two protrusions on the driving frame 93 are in contact with one side of the locking frame 91, and the other side of the locking frame 91 is in contact with the connecting frame 81. The top of the driving frame 93 is connected to one end of the upper rack 74.

[0038] The other side of the clamping frame 91 is provided with two rough surfaces.

[0039] As the clean water level in the temporary storage tube 51 rises, the float plate 82 moves upward with the water level, and the float plate 82 drives the connecting frame 81 and the indicator ring 83 to move upward. The indicator ring 83 moves upward along the hard tube 3, and the indicator ring 83 points to the reading of the scale bar 84. The operator can read the water capacity more accurately through the reading of the scale bar 84 pointed by the indicator ring 83, thereby more accurately calculating the water flow rate.

[0040] Initially, the spring 92 is in a compressed state, and the rough surface on one side of the positioning frame 91 is in close contact with the side of the connecting frame 81. Under the action of the rough surface on the positioning frame 91, the positioning frame 91 can fix the position of the connecting frame 81, thereby fixing the position of the indicator ring 83, thereby preventing the indicator ring 83 from shaking under the floating effect of the water level, making it easier for the operator to read the reading indicated by the indicator ring 83 on the scale bar 84. When the electric slider 72 drives the connecting plate 73, the upper rack 74 and the lower rack 75 to move downward, the upper rack 74 drives the driving frame 93 When the vertical hole ball valve body 551 rotates 90 degrees and is no longer connected to the lower through pipe 54, the protrusion on the driving frame 93 separates from one side of the positioning frame 91. Under the action of the spring 92, the positioning frame 91 moves away from the connecting frame 81. The positioning frame 91 is no longer in contact with the connecting frame 81. Under the action of gravity, the connecting frame 81 and the floating plate 82 move downward to the water level, so that the position of the indicator ring 83 on the scale bar 84 can be adjusted according to the water level at this time; the electric slider 72 drives the connecting plate 73, the upper rack 74 and the lower rack When the upper rack 74 moves upward, the upper rack 74 drives the driving frame 93 to move upward. The vertical hole ball valve body 551 rotates 90 degrees and is connected to the lower through pipe 54 again. At the same time, the protrusion on the driving frame 93 contacts one side of the positioning frame 91, and the spring 92 is compressed accordingly. The positioning frame 91 moves toward the direction close to the connecting frame 81, and the positioning frame 91 contacts the connecting frame 81 again, thereby fixing the position of the connecting frame 81, thereby fixing the position of the indicator ring 83, thereby preventing the indicator ring 83 from shaking under the floating effect of the water level, making it easier for the operator to read the indicator ring. The indicator ring 83 indicates the reading on the scale bar 84. Even if the water is completely drained, the position of the indicator ring 83 will not change. When performing the next flow test, the operator can directly read the reading on the scale bar 84 indicated by the indicator ring 83 and record the previous flow rate. This makes it convenient for the operator to compare two adjacent flow readings, and more intuitively understand the flow change of the submersible pump and the working condition of the submersible pump at this time. By comparing the two adjacent flow readings, the operator can decide whether to overhaul the submersible pump.

[0041] Embodiment 3: Based on embodiment 2, Figure 6-Figure 11 As shown, a cleaning mechanism is also included. The cleaning mechanism is arranged between the floating plate 82 and the temporary storage tube 51. The cleaning mechanism is used to clean impurities in the temporary storage tube 51. The cleaning mechanism includes a curved pipe 101 and an annular brush 102. The curved pipe 101 is rotatably installed on the floating plate 82. The annular brush 102 is installed at one end of the curved pipe 101. The annular brush 102 is located below the floating plate 82. A plurality of bristles are evenly spaced around the outer circumference of the annular brush 102. The bristles on the annular brush 102 are in contact with the inner side surfaces of the temporary storage tube 51 and the transparent observation plate 6. A corrugated groove 103 is provided on the inner side surface of the temporary storage tube 51. The other end of the curved pipe 101 is located in the corrugated groove 103. The curved pipe 101 will slide along the corrugated groove 103.

[0042] A counterweight ball 12 is also included, and a counterweight ball 12 is installed on each of the two connecting frames 81 through bolts.

[0043] Due to the presence of impurities in the water, some impurities will remain on the inner side of the temporary storage tube 51 and the transparent observation plate 6 after the flow rate is tested. As the number of tests increases, the impurities on the inner side of the temporary storage tube 51 and the transparent observation plate 6 will continue to accumulate, which will affect the movement of the floating plate 82 and the transparency of the transparent observation plate 6. When the floating plate 82 moves, it drives the curved pipe 101 and the annular brush 102 to move. When the curved pipe 101 moves along the corrugated groove 103, it will swing. The swing of the curved pipe 101 drives the annular brush 102 to swing. The bristles on the annular brush 102 clean the inner side of the temporary storage tube 51 and the transparent observation plate 6, so that the impurities on the inner side of the temporary storage tube 51 and the transparent observation plate 6 can be brushed off, reducing the residual impurities on the inner side of the temporary storage tube 51 and the transparent observation plate 6, so that the floating plate 82 moves more smoothly, and at the same time will not affect the transparency of the transparent observation plate 6, so that the operator can observe the water level through the transparent observation plate 6.

[0044] Under the action of the weighted ball 12 , the connecting frame 81 , the floating plate 82 and the indicator ring 83 can move downward more smoothly, thereby preventing the connecting frame 81 , the floating plate 82 and the indicator ring 83 from being stuck.

[0045] Although the present disclosure has been described with respect to only a limited number of embodiments, those skilled in the art having benefit of this disclosure will appreciate that various other embodiments can be devised without departing from the scope of the present invention. Accordingly, the scope of the present invention should be limited only by the appended claims.

Claims

1. A mine variable frequency submersible pump flow test device, characterized in that it includes: A submersible pump body (1), a mounting plate (2), a hard pipe (3), a hose (4), a testing mechanism and a driving mechanism are provided. A hose (4) is installed on the water outlet of the submersible pump body (1). A hard pipe (3) is installed on the mounting plate (2). One end of the hard pipe (3) is connected to the hose (4). A testing mechanism is provided between the mounting plate (2) and the hard pipe (3). A driving mechanism is provided between the mounting plate (2) and the testing mechanism. The driving mechanism is used to drive the testing mechanism to test the flow rate of the submersible pump. The testing mechanism comprises a transparent observation plate (6), a temporary storage cylinder (51), a three-way pipe (52), an upper rotating shaft (53), a curved hole ball valve body (531), a lower through pipe (54), a lower rotating shaft (55) and a vertical hole ball valve body (551). The other end of the hard pipe (3) is provided with a three-way pipe (52), the hard pipe (3) is connected with the three-way pipe (52), the mounting plate (2) is provided with a lower through pipe (54), a temporary storage cylinder (51) is provided between the three-way pipe (52) and the lower through pipe (54), and a connecting hole is provided at the upper part of the temporary storage cylinder (51). A hole (510) is provided in the temporary storage tube (51). A transparent observation plate (6) is embedded in each of the two side surfaces. A curved hole ball valve body (531) is rotatably provided in the three-way tube (52). An upper rotating shaft (53) is rotatably provided on one side of the three-way tube (52). One end of the upper rotating shaft (53) is connected to the curved hole ball valve body (531). A vertical hole ball valve body (551) is rotatably provided in the lower tube (54). A lower rotating shaft (55) is rotatably provided on one side of the lower tube (54). One end of the lower rotating shaft (55) is connected to one side of the vertical hole ball valve body (551). The driving mechanism comprises a slide rail (71), an electric slider (72), a connecting plate (73), an upper rack (74), an upper gear (741), a lower rack (75) and a lower gear (751). The slide rail (71) is installed on one side of the mounting plate (2). The slide rail (71) is slidably provided with an electric slider (72). The connecting plate (73) is installed on the electric slider (72). The upper rack (74) is installed on the upper side of the connecting plate (73). The upper gear (741) is installed on the other end of the upper rotating shaft (53). The upper rack (74) meshes with the upper gear (741). The lower rack (75) is installed on the lower side of the connecting plate (73). The lower gear (751) is installed on the other end of the lower rotating shaft (55). The lower rack (75) meshes with the lower gear (751).

2. A mine variable frequency submersible pump flow test device as claimed in claim 1, characterized in that: The material of the transparent observation plate (6) is tempered glass.

3. A mine variable frequency submersible pump flow test device as claimed in claim 2, characterized in that: The invention also comprises an indicating mechanism, which is arranged between the temporary storage tube (51) and the hard tube (3) and is used to more accurately indicate the flow rate of the submersible pump. The indicating mechanism comprises a connecting frame (81), a floating plate (82), an indicating ring (83) and a scale bar (84). Two connecting frames (81) are slidably mounted on the temporary storage tube (51). A floating plate (82) is mounted between one ends of the two connecting frames (81). The floating plate (82) is located in the temporary storage tube (51). An indicating ring (83) is mounted between the other ends of the two connecting frames (81). The indicating ring (83) is slidably connected to the hard tube (3). A scale bar (84) is provided on one side of the hard tube (3). The indicating ring (83) points to the scale of the scale bar (84).

4. A mine variable frequency submersible pump flow test device as claimed in claim 3, characterized in that: The device also includes a positioning mechanism, which is arranged on the mounting plate (2) and the upper rack (74). The positioning mechanism is used to fix the position of the indicator ring (83) to facilitate reading the flow rate. A positioning frame (91) is slidably provided on one side of the mounting plate (2). Two springs (92) are connected between the positioning frame (91) and the mounting plate (2). A driving frame (93) is slidably provided inside the mounting plate (2). Two protrusions are provided on the driving frame (93). The two protrusions on the driving frame (93) are in contact with one side of the positioning frame (91). The other side of the positioning frame (91) is in contact with the connecting frame (81). The top of the driving frame (93) is connected to one end of the upper rack (74).

5. A mine variable frequency submersible pump flow test device as claimed in claim 4, characterized in that: Two rough surfaces are provided on the other side of the positioning frame (91).

6. A mine variable frequency submersible pump flow test device as claimed in claim 5, characterized in that: The invention also comprises a cleaning mechanism, which is arranged between the floating plate (82) and the temporary storage tube (51) and is used to clean impurities in the temporary storage tube (51). The cleaning mechanism comprises a curved tube (101) and an annular brush (102). The curved tube (101) is rotatably mounted on the floating plate (82). The annular brush (102) is mounted on one end of the curved tube (101). The annular brush (102) is located below the floating plate (82). A plurality of bristles are evenly spaced in the outer circumference of the annular brush (102). The bristles on the annular brush (102) are in contact with the inner side surfaces of the temporary storage tube (51) and the transparent observation plate (6). A corrugated groove (103) is formed on the inner side surface of the temporary storage tube (51). The other end of the curved tube (101) is located in the corrugated groove (103).

7. A mine variable frequency submersible pump flow test device as claimed in claim 6, characterized in that: It also includes a counterweight ball (12), and each of the two connecting frames (81) is equipped with a counterweight ball (12).

Images