A concentration detection device for preparing copper alloy cutting fluid

Abstract

The invention discloses a concentration detection device for copper alloy cutting fluid preparation, comprising a cutting fluid preparation kettle body, a driving motor is arranged on the top of the cutting fluid preparation kettle body, a rotating shaft is movably inserted on the cutting fluid preparation kettle body, a stirring frame is arranged at the bottom of the rotating shaft, a rotating disk is arranged on the rotating shaft, a fixed cylinder is arranged on the top of the cutting fluid preparation kettle body, a sample dripping connecting tube is arranged on one side of the fixed cylinder, a support plate is arranged on one side of the cutting fluid preparation kettle body, and a concentration detector is arranged on the top of the support plate; the invention realizes sampling without stopping stirring by arranging a linkage mechanism of the rotating disk and the stirring frame, avoids the risk of sputtering caused by stopping stirring in the prior art, thereby ensuring the safety of operators and improving the sampling efficiency at the same time, and remotely controls the up and down movement of the sampling cylinder and the automatically adjusted opening and closing component, so that the sampling operation is more convenient, the operation difficulty is reduced, and the operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of new material detection, in particular to a concentration detection device for preparing copper alloy cutting fluid. Background Art

[0002] Copper alloy cutting fluid plays a key role in the metal processing process, such as lubrication, cooling and cleaning. The correct cutting fluid concentration can optimize these functions and ensure processing quality and efficiency. Therefore, necessary testing of the concentration of copper alloy cutting fluid is indispensable for maintaining the stability of the production process and improving the quality of the final product.

[0003] During the preparation of copper alloy cutting fluid, the concentration of the cutting fluid in the reactor needs to be tested multiple times. However, in the prior art, when sampling, it is necessary to stop stirring and then sample the cutting to prevent sputtering, and the sampling depth cannot be determined. If the sampling depth is too shallow, the sample will be unrepresentative, affecting the accuracy of concentration detection. Summary of the invention

[0004] The object of the present invention is to provide a concentration detection device for preparing copper alloy cutting fluid to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a concentration detection device for copper alloy cutting fluid preparation, comprising a cutting fluid preparation kettle body, a driving motor is arranged on the top of the cutting fluid preparation kettle body, a rotating shaft is movably inserted on the cutting fluid preparation kettle body, the top of the rotating shaft is fixedly connected to the output end of the driving motor, a stirring frame is arranged at the bottom of the rotating shaft, a rotating disk is arranged on the rotating shaft, a fixed cylinder is arranged on the top of the cutting fluid preparation kettle body, a sample dripping connecting tube is arranged on one side of the fixed cylinder, a support plate is arranged on one side of the cutting fluid preparation kettle body, a concentration detector is arranged on the top of the support plate, a support ring is arranged at the bottom of the fixed cylinder, a sampling cylinder is slidably inserted on the fixed cylinder, a lap plate is arranged on the top of the sampling cylinder, a cover plate is arranged on the top of the fixed cylinder, an operating port is opened on one side of the fixed cylinder, an elastic bellows is fixedly inserted on the other side of the fixed cylinder, a partition is arranged inside the sampling cylinder, openings are opened on both sides of the sampling cylinder, a moving component convenient for installation is arranged between the sampling cylinder and the fixed cylinder, and an opening and closing component convenient for automatic adjustment is arranged on the sampling cylinder.

[0006] Preferably, the fixed cylinder is arranged upwardly at an angle with respect to the axis of the fixed cylinder, the sample dropping tube is a bent tube structure, a scale is arranged on the sample dropping tube, a switch valve is arranged at the bottom of the sample dropping tube, and the detection port of the concentration detector is fixedly connected to the bottom end of the sample dropping tube.

[0007] Preferably, a filter is provided on the elastic bellows, and the elastic bellows is fixedly connected to the sample dripping connecting tube. The inner end of the elastic bellows is in an arc-shaped structure, and the end edge of the lap plate is compressed so that the elastic bellows is compressed. A draw rope is provided on the top of the lap plate, and the end of the draw rope passes through the cover plate. An anti-fall buckle block is provided at the end of the draw rope.

[0008] Preferably, a plurality of partitions are provided, and the plurality of partitions are evenly spaced along the axial direction of the sampling tube. The openings are divided into two groups, one group of openings serves as a liquid inlet, and the other group of openings serves as a liquid outlet. A liquid guide frame is provided on one side of the sampling tube below the openings, and the ports of the elastic bellows correspond one to one to the liquid guide frame, and the cross-sectional area of ​​the liquid guide frame is smaller than the cross-sectional area of ​​the elastic bellows.

[0009] Preferably, the moving component includes a fixed seat, which is fixed on the top of the lap plate. A sliding groove is provided inside the fixed cylinder. A transmission screw is provided in the sliding groove on the fixed cylinder. A sliding block is sleeved on the transmission screw. The sliding block and the transmission screw are connected by internal and external threads, and a slot is provided on one side of the sliding block.

[0010] Preferably, the fixed seat is provided with a movable groove, a movable plug is slidably inserted into the movable groove, a support spring is provided between the movable plug and the movable groove, a fixed block is provided on the fixed seat, a plug rod is slidably inserted into the fixed block, and a limiting ring is provided on the plug rod.

[0011] Preferably, an abutment spring is provided on the insertion rod between the limiting ring and the fixed block, a clamping hole is provided on one side of the movable insertion block, the end of the insertion rod matches the clamping hole, and the end of the movable insertion block matches the slot.

[0012] Preferably, the opening and closing assembly includes a limit seat, which is fixedly connected to the outer side of the sampling barrel near the opening, and has a receiving groove on the limit seat, on which a sealing block is slidably inserted, and limit barrels are provided on the top of the fixed seat and the bottom of the sampling barrel.

[0013] Preferably, one side of the sealing block covers the opening to form a closure, an airbag block is arranged between the sealing block and one side of the accommodating groove, a return spring is arranged between the sealing block and the other side of the accommodating groove, and a branch pipe is arranged on one side of the airbag block.

[0014] Preferably, a mounting plate is provided at the end of the limiting cylinder, a push rod is slidably inserted on the mounting plate, an air bag column is provided between the push rod and the inner side of the limiting cylinder, a main pipe is provided on one side of the air bag column, the main pipe is connected to the branch pipe, the ends of the two push rods are respectively arranged corresponding to the turntable and the cover plate, and the protruding length of the push rod is greater than the length of the sealing block covering the opening.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention realizes sampling without stopping stirring by setting a linkage mechanism between the turntable and the stirring frame, avoiding the risk of sputtering caused by stopping stirring in the prior art, thereby ensuring the safety of the operator and improving the efficiency of sampling.

[0017] 2. The present invention sets multiple depth sampling points and uses partitions to separate liquid samples at different depths, effectively preventing mixing between liquid layers during the sampling process, ensuring the representativeness of the samples, greatly improving the accuracy of concentration detection, and using multiple sample dripping tubes to achieve simultaneous detection of multiple groups of samples, which not only reduces the time required for detection, but also improves the efficiency of data processing and analysis through centralized processing.

[0018] 3. The present invention makes the sampling operation more convenient, reduces the difficulty of operation, and improves the operating efficiency by remotely controlling the up and down movement of the sampling tube and automatically adjusting the opening and closing components. The design of the slide groove and the transmission screw inside the fixed tube ensures the stable movement of the sampling tube, and the use of the support spring and the return spring ensures the precise coordination and reliable operation of the components. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic structural diagram of a concentration detection device for preparing copper alloy cutting fluid according to the present invention.

[0020] Figure 2 This is a schematic diagram of the structure inside the cutting fluid preparation kettle of the present invention.

[0021] Figure 3 It is a cross-sectional view of the fixing tube of the present invention.

[0022] Figure 4 It is a schematic structural diagram of the outer side of the fixed cylinder of the present invention.

[0023] Figure 5 It is a schematic diagram of the structure between the sample dropping connecting tube and the concentration detector of the present invention.

[0024] Figure 6 It is a schematic diagram of the structure between the fixed cylinder and the sampling cylinder of the present invention.

[0025] Figure 7 It is a schematic diagram of the structure inside the sampling tube of the present invention.

[0026] Figure 8 It is a schematic diagram of the structure on the fixing base of the present invention.

[0027] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure enlarged at point A in the middle.

[0028] Fig.10 It is a structural schematic diagram of the opening and closing assembly of the present invention.

[0029] Fig.11 For the present invention Fig.10 Schematic diagram of the enlarged structure at point B.

[0030] Fig.12 For the present invention Fig.10 Schematic diagram of the enlarged structure at point C in the middle.

[0031] In the figure: cutting fluid preparation kettle body 1; driving motor 11; rotating shaft 12; stirring frame 13; rotating disk 14; fixed cylinder 2; supporting ring 21; cover plate 22; elastic bellows 23; filter screen 24; operation port 25; slide 26; sampling cylinder 3; lap plate 31; pull rope 311; anti-fall buckle block 312; opening 32; partition plate 33; liquid guide frame 34; sample dripping connecting tube 4; scale 41; switch valve 42; supporting plate 5; concentration detector 6; fixing seat 7; movable plug block 71; supporting spring 72; fixing block 73; plug rod 74; limiting ring 75; abutting spring 76; card hole 77; transmission screw 8; slider 81; slot 82; limiting seat 9; sealing block 91; air bag block 92; reset spring 93; main pipe 94; branch pipe 95; limiting cylinder 96; air bag column 97; mounting plate 98; push rod 99. DETAILED DESCRIPTION

[0032] 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.

[0033] See also Figure 1 This is a schematic diagram of the structure of a concentration detection device for preparing copper alloy cutting fluid according to the present invention. Figure 2 The present invention provides a technical solution: a concentration detection device for copper alloy cutting fluid preparation, comprising a cutting fluid preparation kettle 1, which is the main part of the whole device and is used for loading and preparing cutting fluid. A driving motor 11 is fixedly installed on the top of the cutting fluid preparation kettle 1, and a rotating shaft 12 is movably inserted on the cutting fluid preparation kettle 1. The top of the rotating shaft 12 is fixedly connected to the output end of the driving motor 11, and a stirring frame 13 is fixedly connected to the bottom of the rotating shaft 12. The driving motor is connected to the rotating shaft 12 through the output shaft to transmit power to the stirring device, so that the stirring frame 13 fully stirs the cutting fluid in the kettle, and a rotating disk 14 is fixedly sleeved on the rotating shaft 12.

[0034] Figure 5It is a structural schematic diagram between the sample dripping connecting tube and the concentration detector of the present invention. A fixed cylinder 2 is fixedly connected to the top of the cutting fluid preparation kettle body 1. The fixed cylinder 2 is arranged upwardly and inclined with respect to the axis of the fixed cylinder 2. A sample dripping connecting tube 4 is arranged on one side of the fixed cylinder 2. The sample dripping connecting tube 4 is a bent tube structure. A scale 41 is welded on the sample dripping connecting tube 4. A switch valve 42 is installed at the bottom of the sample dripping connecting tube 4. The switch valve 42 can be a solenoid valve controlled by a control center.

[0035] A support plate 5 is fixedly connected to one side of the cutting fluid preparation kettle body 1, and a concentration detector 6 is fixedly installed on the top of the support plate 5. The detection port of the concentration detector 6 is fixedly connected to the bottom end of the sample dripping connecting tube 4. The working principle of the concentration detector 6 is that when light passes through the solution, the light intensity is weakened due to the absorption of light by the substance, and different substances have different absorbances, so that the substance and its content can be qualitatively or quantitatively analyzed.

[0036] By opening the switch valve 42, the cutting fluid in the sample dripping tube 4 can be dripped into the concentration detector 3 for detection. The scale 41 is set to facilitate the control of the cutting fluid sample dripping amount. There are multiple sample dripping tubes 4, and the multiple sample dripping tubes 4 are evenly distributed on the top of the concentration detector 6. Multiple groups of tests can be performed simultaneously, and then multiple groups of concentration data can be obtained through the concentration detector 6 to improve data accuracy.

[0037] Figure 3 It is a cross-sectional view of the fixed cylinder of the present invention, a support ring 21 is fixedly connected to the bottom of the fixed cylinder 2, a sampling cylinder 3 is slidably inserted on the fixed cylinder 2, a lap plate 31 is fixedly connected to the top of the sampling cylinder 3, the support ring 21 is arranged so that the lap plate 31 is limited and prevented from falling into the cutting fluid preparation kettle body 1, a cover plate 22 is fixedly installed on the top of the fixed cylinder 2, and the main function of the fixed cylinder 2 is to provide stable support and sliding track for the sampling cylinder 3.

[0038] Figure 6 This is a schematic diagram of the structure between the fixed tube and the sampling tube of the present invention. A pull rope 311 is pulled at the top of the lap plate 31. The end of the pull rope 311 passes through the cover plate 22. An anti-fall buckle block 312 is fixed to the end of the pull rope 311. The pull rope 311 is used to remotely control the up and down movement of the sampling tube 3 to facilitate the later removal of the sampling tube 3. The anti-fall buckle block 312 prevents the top of the pull rope 311 from sliding into the fixed tube 2.

[0039] An operating port 25 is provided on one side of the fixed cylinder 2, and the operating port 25 is an opening on one side of the fixed cylinder 2, which is convenient for the installation of the sampling cylinder 3 at a later stage. An elastic bellows 23 is fixedly connected to the other side of the fixed cylinder 2, and a filter screen 24 is installed on the elastic bellows 23. The filter screen 24 can filter the copper alloy cutting fluid for concentration detection, and can effectively filter out particulate impurities in the copper alloy cutting fluid. The elastic bellows 23 is fixedly connected to the sample dripping connecting tube 4, and the inner end of the elastic bellows 23 is an arc-shaped structure. The edge of the end of the lap plate 31 is compressed to compress the elastic bellows 23, allowing a certain degree of relative movement.

[0040] A slide groove 26 is provided inside the fixed cylinder 2, and a transmission screw 8 is provided on the fixed cylinder 2 in the slide groove 26. The transmission screw 8 is rotatably connected to the fixed cylinder 2 through a bearing. A motor is installed on the top of the transmission screw 8, and the output end of the motor is fixedly connected to the transmission screw 8. A slider 81 is sleeved on the transmission screw 8, and the slider 81 and the transmission screw 8 are connected by internal and external threads. A slot 82 is provided on one side of the slider 81, and the slot 82 is a slot body with a certain depth.

[0041] When the motor is started, the transmission screw 8 will rotate. Since the threads on it match the threads in the slider 81, this rotational motion will be converted into linear motion of the slider 81. The slider 81 slides up and down along the slide groove 26 under the drive of the transmission screw 8.

[0042] Figure 7 This is a schematic diagram of the structure inside the sampling tube of the present invention. A partition 33 is fixedly connected to the inside of the sampling tube 3. A plurality of partitions 33 are provided. The plurality of partitions 33 are evenly spaced along the axial direction of the sampling tube 3. The partitions 33 are used to separate liquid samples of different depths to prevent mixing of liquids at different levels during the sampling process, thereby ensuring the representativeness of the sample.

[0043] Openings 32 are provided on both sides of the sampling tube 3, and the openings 32 are divided into two groups. One group of openings 32 serves as a liquid inlet, and the other group of openings 32 serves as a liquid outlet, which are respectively responsible for the entry and discharge of samples. A liquid guide frame 34 is fixedly connected to one side of the sampling tube 3 below the opening 32. The ports of the elastic bellows 23 correspond one to one with the liquid guide frame 34, and the cross-sectional area of ​​the liquid guide frame 34 is smaller than the cross-sectional area of ​​the elastic bellows 23.

[0044] When the sampling tube 3 moves upward, the end edge of the lap plate 31 is compressed, causing the elastic bellows 23 to be compressed. Due to the elastic force of the elastic bellows 23 itself, the elastic bellows 23 is sleeved on the liquid guide frame 34, completing the connection between the sampling tube 3 and the sample dripping connecting tube 4, making it convenient to effectively transfer the sample to the sample dripping connecting tube 4 after sampling.

[0045] Figure 8 It is a schematic diagram of the structure of the fixing seat of the present invention. Fig. 9 For the present invention Figure 8 In the structural schematic diagram enlarged at point A, a movable component for easy installation is arranged between the sampling tube 3 and the fixed tube 2, and the movable component includes a fixed seat 7, the fixed seat 7 is fixed on the top of the lap plate 31, a movable groove is opened on the fixed seat 7, a movable plug-in block 71 is slidably inserted in the movable groove, a support spring 72 is fixedly connected between the movable plug-in block 71 and the movable groove, the end of the movable plug-in block 71 and the slot 82 match each other, and the support spring 72 provides elastic support between the movable plug-in block 71 and the movable groove, so that the end of the movable plug-in block 71 is inserted in the slot 82, thereby realizing the insertion of the sampling tube 3 on the slider 81.

[0046] The fixing seat 7 is fixedly connected to a fixing block 73, on which a rod 74 is slidably inserted, a limiting ring 75 is fixed on the rod 74, and a contact spring 76 is sleeved on the rod 74 between the limiting ring 75 and the fixing block 73. A clamping hole 77 is provided on one side of the movable block 71, and the end of the rod 74 matches the clamping hole 77 with each other. The elastic force of the contact spring 76 makes the rod 74 always maintain pressure on the fixed block 73, thereby ensuring that the connection between the rod 74 and the clamping hole 77 of the movable block 71 will not be loosened due to external force. In this way, the end of the movable block 71 can be accommodated in the cylinder of the fixed cylinder 2, which is convenient for the sampling cylinder 3 to be subsequently pulled upward and removed.

[0047] Fig.10 is a schematic diagram of the structure of the opening and closing assembly of the present invention, Fig.11 For the present invention Fig.10 The enlarged structural diagram at B in the middle, Fig.12 For the present invention Fig.10 In the enlarged structural diagram at C in the middle, the sampling barrel 3 is provided with an opening and closing component that is easy to adjust automatically, and the opening and closing component includes a limit seat 9, which is fixedly connected to the outer side of the sampling barrel 3 near the opening 32, and a receiving groove is provided on the limit seat 9. A sealing block 91 is slidably inserted into the receiving groove, and one side of the sealing block 91 covers the opening 32 to form a closure. The sealing block 91 directly acts on the opening 32 to control its opening and closing state to prevent leakage of the sample in the non-sampling state or retention in the sampling state.

[0048] An airbag block 92 is bonded between the sealing block 91 and one side of the accommodating groove, a return spring 93 is fixedly connected between the sealing block 91 and the other side of the accommodating groove, and a branch pipe 95 is connected to one side of the airbag block 92. The airbag block 92 provides a power source for the opening and closing action of the sealing block 91, and drives the movement of the sealing block 91 by the change of air pressure. When the airbag block 92 is inflated, its volume expands, pushing the sealing block 91 to slide inward, thereby opening the opening 32; when the airbag block 92 is deflated, the sealing block 91 is reset under the action of the return spring 93, and the opening 32 is closed.

[0049] The top of the fixed seat 7 and the bottom of the sampling tube 3 are fixedly connected to the limiting tube 96, and a mounting plate 98 is fixed to the end of the limiting tube 96. A push rod 99 is slidably inserted on the mounting plate 98. An airbag column 97 is bonded between the push rod 99 and the inner side of the limiting tube 96. The models and specifications of the airbag block 92 and the airbag column 97 can be selected according to actual working conditions.

[0050] One side of the airbag column 97 is connected to a main pipe 94, and the main pipe 94 is connected to the branch pipe 95. When the airbag column 97 is inflated, the push rod 99 is pushed, thereby triggering the opening and closing action of the sealing block 91. The ends of the two push rods 99 are respectively arranged corresponding to the turntable 14 and the cover plate 22. The protruding length of the push rod 99 is greater than the length of the sealing block 91 covering the opening 32. When the airbag column 97 is inflated, the push rod 99 is pushed, and its protruding length is greater than the length of the sealing block 91 covering the opening 32, ensuring that the sealing block 91 can be effectively pushed to open the opening 32. The elastic force of the reset spring 93 can overcome the air pressure of the airbag block 92 and the airbag column 97.

[0051] In actual use, the driving motor is connected to the rotating shaft 12 through the output shaft, and the power is transmitted to the stirring device, so that the stirring frame 13 can fully stir the cutting fluid in the kettle body. During the stirring process, the transmission screw 8 rotates under the start of the motor, so that the slide block 81 moves downward along the slide groove 26, and the support spring 72 provides elastic support between the movable plug block 71 and the movable groove, so that the end of the movable plug block 71 is plugged into the slot 82, so that the sampling tube 3 is plugged into the slide block 81. The sample tube 3 also moves downward, and then the sampling tube 3 is inserted into the middle position for sampling. At this time, the push rod 99 is abutted by the rotary disk 14, so that the push rod 99 is pressed to move into the limit tube 96, thereby compressing the airbag column 97. The gas in the airbag column 97 is transmitted to the airbag block 92 through the main pipe 94 and the branch pipe 95. The airbag block 92 expands and squeezes the sealing block 91, pushing the sealing block 91 to slide inward, thereby opening the opening 32 for liquid inlet, and the cutting fluid in the cutting fluid preparation kettle body 1 enters the sampling tube through the opening 32. 3, a plurality of partitions 33 are used to separate liquid samples of different depths. After sampling, the transmission screw 8 rotates in the opposite direction under the start of the motor, so that the slider 81 moves upward, the sampling tube 3 also moves upward, the top rod 99 is separated from the rotary disk 14, and the sealing block 91 is reset under the action of the reset spring 93 to close the opening 32; in the process of moving upward, the edge of the end of the lap plate 31 is compressed to compress the elastic bellows 23, and due to the elastic force of the elastic bellows 23 itself, the elastic bellows 23 is The corrugated tube 23 is sleeved on the liquid guide frame 34 to complete the connection between the sampling tube 3 and the sample dripping connecting tube 4. After that, the top rod 99 on the top limiting tube 96 of the fixed seat 7 is abutted by the inner side of the cover plate 22. The cooperation between the airbag column 97 and the main pipe 94, the branch pipe 95, and the airbag block 92 pushes the sealing block 91 to slide inward, thereby opening the opening 32 for liquid outlet, and transmitting the sample to the sample dripping connecting tube 4 at an inclined angle. By opening the switch valve 42, the cutting fluid in the sample dripping connecting tube 4 can be dripped into the concentration detector 3 for detection. Multiple sample dripping connecting tubes 4 can perform multiple groups of detection at the same time, and then obtain multiple groups of concentration data through the concentration detector 6 to improve data accuracy.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A concentration detection device for copper alloy cutting fluid preparation, comprising a cutting fluid preparation kettle (1), characterized in that: The cutting fluid preparation kettle (1) is provided with a driving motor (11) at the top, a rotating shaft (12) is movably plugged into the cutting fluid preparation kettle (1), the top of the rotating shaft (12) is fixedly connected to the output end of the driving motor (11), a stirring frame (13) is provided at the bottom of the rotating shaft (12), a rotating disk (14) is provided on the rotating shaft (12), a fixed cylinder (2) is provided at the top of the cutting fluid preparation kettle (1), a sample dripping connecting tube (4) is provided on one side of the fixed cylinder (2), a support plate (5) is provided at one side of the cutting fluid preparation kettle (1), a concentration detector (6) is provided on the top of the support plate (5), a support ring (21) is provided at the bottom of the fixed cylinder (2), a sampling cylinder (3) is slidably plugged into the fixed cylinder (2), and a sampling tube (4) is provided on the fixed cylinder (2). A lap plate (31) is provided on the top of the sample tube (3), a cover plate (22) is provided on the top of the fixed tube (2), an operation port (25) is provided on one side of the fixed tube (2), an elastic bellows (23) is fixedly plugged on the other side of the fixed tube (2), a partition plate (33) is provided inside the sampling tube (3), openings (32) are provided on both sides of the sampling tube (3), a filter screen (24) is provided on the elastic bellows (23), the elastic bellows (23) is fixedly connected to the sample dripping connecting tube (4), the inner end of the elastic bellows (23) is in an arc-shaped structure, the edge of the end of the lap plate (31) is compressed so that the elastic bellows (23) is compressed, a drawstring (311) is provided on the top of the lap plate (31), and the drawstring (311) is provided on the top of the lap plate (31). The end portion passes through the cover plate (22), and the end portion of the pull rope (311) is provided with an anti-fall buckle block (312). A plurality of partitions (33) are provided, and the plurality of partitions (33) are distributed at equal intervals along the axial direction of the sampling tube (3). The openings (32) are divided into two groups, one group of openings (32) serves as a liquid inlet, and the other group of openings (32) serves as a liquid outlet. A liquid guide frame (34) is provided below the opening (32) on one side of the sampling tube (3), and the ports of the elastic bellows (23) correspond to the liquid guide frame (34) one by one. The cross-sectional area of ​​the liquid guide frame (34) is smaller than the cross-sectional area of ​​the elastic bellows (23). A movable assembly for easy installation is provided between the sampling tube (3) and the fixed tube (2), and the movable assembly includes a fixed seat (7 ), the fixed seat (7) is fixed on the top of the lap plate (31), the interior of the fixed cylinder (2) is provided with a slide groove (26), the fixed cylinder (2) is provided with a transmission screw (8) in the slide groove (26), the transmission screw (8) is sleeved with a slider (81), the slider (81) and the transmission screw (8) are connected by internal and external threads, a slot (82) is provided on one side of the slider (81), the fixed seat (7) is provided with a movable groove, a movable plug (71) is slidably inserted in the movable groove, a support spring (72) is provided between the movable plug (71) and the movable groove, the fixed seat (7) is provided with a fixed block (73), a plug rod (74) is slidably inserted in the fixed block (73), and a limit ring (75) is provided on the plug rod (74),The insert rod (74) is provided with an abutment spring (76) between the limit ring (75) and the fixed block (73); a clamping hole (77) is provided on one side of the movable insert block (71); the end of the insert rod (74) matches the clamping hole (77); the end of the movable insert block (71) matches the slot (82); an opening and closing component for facilitating automatic adjustment is provided on the sampling tube (3); the opening and closing component comprises a limit seat (9); the limit seat (9) is fixedly connected to the outer side of the sampling tube (3) near the opening (32); a receiving groove is provided on the limit seat (9); a sealing block (91) is slidably inserted into the receiving groove; a limit cylinder (96) is provided on the top of the fixed seat (7) and the bottom of the sampling tube (3); one side of the sealing block (91) covers the opening (32). A closure is formed, an airbag block (92) is arranged between the sealing block (91) and one side of the receiving groove, a return spring (93) is arranged between the sealing block (91) and the other side of the receiving groove, a branch pipe (95) is arranged on one side of the airbag block (92), a mounting plate (98) is arranged at the end of the limiting cylinder (96), a push rod (99) is slidably inserted on the mounting plate (98), an airbag column (97) is arranged between the push rod (99) and the inner side of the limiting cylinder (96), a main pipe (94) is arranged on one side of the airbag column (97), and the main pipe (94) is connected to the branch pipe (95), the ends of the two push rods (99) are respectively arranged corresponding to the rotating disk (14) and the cover plate (22), and the protruding length of the push rod (99) is greater than the length of the sealing block (91) covering the opening (32).

2. A concentration detection device for preparing copper alloy cutting fluid according to claim 1, characterized in that: The fixed cylinder (2) is arranged to be inclined upward with respect to the axis of the fixed cylinder (2); the sample dropping connecting tube (4) is a bent tube structure; a scale (41) is arranged on the sample dropping connecting tube (4); a switch valve (42) is arranged at the bottom of the sample dropping connecting tube (4); and a detection port of the concentration detector (6) is fixedly connected to the bottom end of the sample dropping connecting tube (4).

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