Water-based paint production device for railway engineering

Abstract

The invention relates to the technical field of railway engineering coatings, and discloses a railway engineering water-based coating production device which comprises a workbench, a reaction kettle is arranged on the workbench, and powder and a water-based solvent are injected into the reaction kettle to react to generate a water-based coating; a pipeline mechanism and a density detection mechanism are further arranged on the workbench, the pipeline mechanism comprises a conveying pipeline arranged on the workbench, a first liquid pump is arranged on the reaction kettle, the conveying pipeline comprises a first pipeline section connected with the first liquid pump, and the lower end of the first pipeline section is connected with a second pipeline section and a third pipeline section; the lower end of the second pipeline section is connected with a fourth pipeline section. According to the water-based paint production device for the railway engineering, sampling detection is carried out after water-based paint is produced, the injection amount of powder and a water-based solvent is automatically adjusted according to the fact that the density is higher than or lower than the standard range, it is guaranteed that the component content of a final product is within the standard range, and therefore the product quality is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of railway coatings, in particular to a production device for water-based coatings for railway engineering. Background Art

[0002] Due to environmental protection requirements, the paints currently used in railway projects are usually water-based paints, which produce significantly less volatile organic matter than traditional paints. The production process of water-based paints is to mix powders with aqueous solvents. Powders include pigments and fillers. Fillers usually include titanium dioxide, lithopone and talcum powder, etc. The aqueous solvents include water, preservatives, wetting agents, dispersants, defoamers, etc.

[0003] In the prior art, the production of water-based paints is usually carried out by directly filling the paint after the dosage of powder and aqueous solvent is properly proportioned. There is a lack of component detection after production. Since the operation of the reaction equipment is affected by various operating conditions, there are differences in the degree of solubility of the powder. The density of the water-based paint finally produced may deviate from the standard range, thereby reducing the product quality.

[0004] Therefore, in order to solve the above technical problems existing in the prior art, a water-based coating production device for railway engineering is proposed. Summary of the invention

[0005] The present invention provides a water-based paint production device for railway engineering. The device has the beneficial effect of ensuring that the content of components in the final product is within the standard range by performing sampling and testing after the water-based paint is produced, and automatically adjusting the injection amount of powder and aqueous solvent according to whether the density is higher or lower than the standard range, thereby greatly improving the quality of the product. The problem in the prior art mentioned in the above background technology that the water-based paint is affected by various working conditions during the production process, the solubility degree of the powder varies, and the density of the water-based paint finally produced may deviate from the standard range, thereby reducing the quality of the product is solved.

[0006] The present invention provides the following technical solution: a railway engineering water-based paint production device, comprising a workbench, wherein a reaction kettle is arranged on the workbench, and a powder and an aqueous solvent are injected into the reaction kettle to react and generate the water-based paint; The workbench is also provided with a pipeline mechanism and a density detection mechanism, the pipeline mechanism includes a delivery pipeline arranged on the workbench, the reactor is provided with a first liquid pump, the delivery pipeline includes a first pipeline segment connected to the first liquid pump, the lower end of the first pipeline segment is connected to two passages of the second pipeline segment and the third pipeline segment, and the lower end of the second pipeline segment is connected to the fourth pipeline segment; The density detection mechanism comprises a first overflow valve assembly arranged between the first pipe section and the second pipe section, a second overflow valve assembly is arranged at the lower end of the second pipe section, and the rated pressure of the second overflow valve assembly is greater than that of the first overflow valve assembly; The water-based paint produced by the workbench is quantitatively injected into the first pipeline section through the first liquid pump. When the density value of the water-based paint is within the standard range, the water-based paint enters the fourth pipeline section. When the density value of the water-based paint is lower than the standard range, the water-based paint enters the third pipeline section.

[0007] As an optional solution of the water-based coating production device for railway engineering of the present invention, wherein: the reactor is provided with a liquid injection pipeline for injecting water-based solvent, the workbench is provided with a pneumatic conveying device and a storage tank, the pneumatic conveying device is connected to the inside of the workbench through the injection pipeline for injecting powder, and the fourth pipeline section is connected to the inside of the storage tank; The reactor is provided with a motor and a stirring paddle, and the output shaft of the motor is connected to the stirring paddle.

[0008] As an optional solution of the water-based paint production device for railway engineering of the present invention, wherein: the pipeline mechanism also includes a first solenoid valve arranged on the third pipeline section, a second liquid pump and a first reflux pipeline are arranged on the workbench, and the third pipeline section is connected to the interior of the reactor through the second liquid pump and the first reflux pipeline; The fourth pipeline section is provided with a second electromagnetic valve, the storage tank is provided with a third liquid pump, and the fourth pipeline section is communicated with the interior of the storage tank through the second electromagnetic valve and the third liquid pump.

[0009] As an optional solution of the water-based paint production device for railway engineering described in the present invention, wherein: the first overflow valve assembly includes an adjustment seat threadedly connected to the second pipeline section, the adjustment seat is provided with a mounting seat, a valve core is slidably provided on the mounting seat, a first valve seat matching the valve core is provided in the second pipeline section, and the valve core is elastically connected to the mounting seat through a spring; The structure of the second overflow valve assembly is the same as that of the first overflow valve assembly.

[0010] As an optional solution of the water-based paint production device for railway engineering described in the present invention, wherein: the pipeline mechanism also includes a fifth pipeline segment arranged at the lower end of the second pipeline segment, a sixth pipeline segment is arranged at the lower end of the fifth pipeline segment, and a third overflow valve assembly is arranged between the fifth pipeline segment and the sixth pipeline segment, the structure of the third overflow valve assembly is the same as that of the first overflow valve assembly, and the rated pressure of the third overflow valve assembly is greater than that of the second overflow valve assembly; When the density value of the water-based paint is greater than the standard range, the water-based paint enters the sixth pipeline segment, a fourth liquid pump and a second reflux pipeline are provided on the workbench, and the sixth pipeline segment is connected to the interior of the workbench through the fourth liquid pump and the second reflux pipeline.

[0011] As an optional solution of the railway engineering water-based paint production device of the present invention, wherein: the first overflow valve assembly, the second overflow valve assembly and the third overflow valve assembly are all provided with a fixing assembly, and the fixing assembly includes a fixing frame provided on the conveying pipeline, and a first rotating rod is rotatably provided on the fixing frame; The first rotating rod is elastically connected to the fixing frame through a torsion spring, a buckle is arranged on the first rotating rod, a slot matching with the buckle is opened on the valve core, an electric push rod is arranged on the conveying pipeline, and an output shaft of the electric push rod is movably hinged to the buckle through a hinge shaft.

[0012] As an optional solution of the water-based paint production device for railway engineering of the present invention, it further includes a regulating mechanism, the regulating mechanism includes a first regulating component and a first butterfly valve component, the first regulating component is arranged on the first pipeline section, and the first butterfly valve component is arranged on the injection pipeline; When the density value of the water-based paint is less than the standard range, the first butterfly valve assembly is adjusted through the first adjustment assembly to increase the injection amount of the powder.

[0013] As an optional solution of the water-based paint production device for railway engineering described in the present invention, the first butterfly valve assembly includes a second valve seat arranged on the injection pipe, a valve stem is rotatably arranged on the second valve seat, and a butterfly plate is arranged on the valve stem.

[0014] As an optional solution of the water-based paint production device for railway engineering described in the present invention, wherein: the first regulating component includes an external pipe arranged on the first pipe section, a piston rod is slidably arranged in the external pipe, a fixing seat is arranged on the external pipe, a second rotating rod is rotatably arranged on the fixing seat, a gear is arranged on the second rotating rod, a rack meshing with the gear is arranged on the piston rod, and the second rotating rod is transmission-connected to the valve stem through a ratchet transmission device; The ratchet transmission device includes a rotating disk arranged on the valve stem, a ratchet wheel is arranged on the gear, two ratchet pawls meshing with the ratchet wheel are rotatably arranged on the rotating disk, and two spring sheets are also arranged on the rotating disk, and the two spring sheets press the two ratchet pawls tightly onto the ratchet wheel.

[0015] As an optional solution of the water-based paint production device for railway engineering of the present invention, wherein: the regulating mechanism further includes a second regulating component and a second butterfly valve component, the second regulating component is arranged on the fifth pipeline segment, the second butterfly valve component is arranged on the injection pipeline, the structure of the second regulating component is consistent with that of the first regulating component, and the structure of the second butterfly valve component is consistent with that of the first butterfly valve component; When the density value of the water-based paint is greater than the standard range, the second butterfly valve assembly is adjusted through the second adjustment assembly to increase the injection amount of the water-based solvent.

[0016] The present invention has the following beneficial effects: 1. The water-based paint production device for railway engineering, in the continuous production process, samples the water-based paint, injects it into the delivery pipeline, and diverts the water-based paint through the first overflow valve assembly and the second overflow valve assembly with different rated pressures. When the density of the water-based paint is lower or higher than the standard range, it is diverted back to the workbench for re-production. When the density of the water-based paint is within the standard range, it is injected into the storage tank and stored as a qualified product. In this way, the content of the components determined by the density of the final water-based paint can be within the standard range and meet the quality standards.

[0017] 2. The water-based paint production device for railway engineering, after measuring the density is less than the standard range, continues to inject water-based paint at a uniform speed until the rated pressure of the first overflow valve assembly is reached. In this process, the injection amount of subsequent powder is increased according to the specific amount of injected liquid.

[0018] 3. The water-based paint production device for railway engineering, after measuring the density to be greater than the standard range, also continues to inject water-based paint at a uniform speed until the rated pressure of the third overflow valve assembly is reached. In this process, the subsequent injection amount of water-based solvent is reduced according to the specific amount of injected liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic cross-sectional structural diagram of the pipeline mechanism in the present invention.

[0021] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0022] Figure 4 for Figure 2 A partial enlarged view of point B in the middle.

[0023] Figure 5 It is a schematic diagram of the explosion structure of the reactor in the present invention.

[0024] Figure 6 It is a schematic diagram of the explosion structure of the first overflow valve assembly in the present invention.

[0025] Figure 7 It is a schematic diagram of the exploded structure of the first regulating component in the present invention.

[0026] Figure 8 It is a schematic diagram of the structure of the second adjustment component in the present invention.

[0027] In the figure: 100, workbench; 200, reactor; 210, injection pipeline; 220, pneumatic conveying device; 230, injection pipeline; 240, storage tank; 250, motor; 260, stirring paddle; 300, pipeline mechanism; 310, first liquid pump; 320, conveying pipeline; 321, first pipeline section; 322, second pipeline section; 323, third pipeline section; 324, fourth pipeline section; 325, fifth pipeline section; 326, sixth pipeline section; 330, first solenoid valve; 340, second liquid pump; 350, first reflux pipeline; 360, second solenoid valve; 370, third liquid pump; 380, fourth liquid pump; 390, second reflux pipeline; 400, density detection mechanism; 410, first overflow valve assembly; 411, mounting seat; 412, valve core; 413 , first valve seat; 414, spring; 415, adjustment seat; 420, second relief valve assembly; 430, third relief valve assembly; 440, fixing assembly; 441, fixing frame; 442, first rotating rod; 443, torsion spring; 444, buckle; 445, slot; 446, electric push rod; 500, adjustment mechanism; 510, first adjustment assembly; 511, external pipeline; 512, piston rod; 513, fixing seat; 514, second rotating rod; 515, gear; 516, rack; 517, ratchet transmission device; 5171, turntable; 5172, ratchet; 5173, pawl; 5174, spring sheet; 520, first butterfly valve assembly; 521, second valve seat; 522, valve stem; 523, butterfly plate; 530, second adjustment assembly; 540, second butterfly valve assembly. DETAILED DESCRIPTION

[0028] 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.

[0029] For example, see Figure 1-5A water-based paint production device for railway engineering includes a workbench 100, on which a reaction kettle 200 is arranged. The water-based paint is generated by injecting powder and an aqueous solvent into the reaction kettle 200 for reaction.

[0030] A pipeline mechanism 300 and a density detection mechanism 400 are also provided on the workbench 100. The pipeline mechanism 300 includes a delivery pipeline 320 arranged on the workbench 100. A first liquid pump 310 is provided on the reactor 200. The delivery pipeline 320 includes a first pipeline segment 321 connected to the first liquid pump 310. The lower end of the first pipeline segment 321 is connected to two passages, namely, a second pipeline segment 322 and a third pipeline segment 323. The lower end of the second pipeline segment 322 is connected to a fourth pipeline segment 324.

[0031] The density detection mechanism 400 includes a first overflow valve assembly 410 disposed between the first pipe section 321 and the second pipe section 322 . A second overflow valve assembly 420 is disposed at the lower end of the second pipe section 322 . The rated pressure of the second overflow valve assembly 420 is greater than that of the first overflow valve assembly 410 .

[0032] The water-based paint produced by the workbench 100 is quantitatively injected into the first pipeline section 321 through the first liquid pump 310. When the density value of the water-based paint is within the standard range, the water-based paint enters the fourth pipeline section 324. When the density value of the water-based paint is lower than the standard range, the water-based paint enters the third pipeline section 323.

[0033] The reactor 200 is provided with a liquid injection pipe 210 for injecting aqueous solvent, and the workbench 100 is provided with a pneumatic conveying device 220 and a storage tank 240. The pneumatic conveying device 220 is connected to the inside of the workbench 100 through the injection pipe 230 for injecting powder, and the fourth pipe section 324 is connected to the inside of the storage tank 240.

[0034] The reactor 200 is provided with a motor 250 and a stirring paddle 260 , and the output shaft of the motor 250 is connected to the stirring paddle 260 .

[0035] The pipeline mechanism 300 also includes a first solenoid valve 330 arranged on the third pipeline section 323 . A second liquid pump 340 and a first reflux pipeline 350 are arranged on the workbench 100 . The third pipeline section 323 is connected to the interior of the reactor 200 through the second liquid pump 340 and the first reflux pipeline 350 .

[0036] A second solenoid valve 360 ​​is disposed on the fourth pipeline section 324 , a third liquid pump 370 is disposed on the storage tank 240 , and the fourth pipeline section 324 is connected to the interior of the storage tank 240 through the second solenoid valve 360 ​​and the third liquid pump 370 .

[0037] In this embodiment: during the production process of water-based paint, water-based solvent is injected into the reactor 200 through the injection pipe 210, and the pneumatic conveying device 220 can be connected to the equipment for storing powder, and the powder is injected into the reactor 200 by pneumatic conveying through the injection pipe 230. The specific structure and working principle of the pneumatic conveying device 220 are conventional technical means and are not described in detail. After the powder and the water-based solvent are injected, the stirring paddle 260 is driven by the motor 250 to rotate for stirring, and the reactor 200 can be provided with filtering, degassing and other devices to mix the powder and the water-based solvent to generate water-based paint.

[0038] After production, the first liquid pump 310 can be operated to quantitatively extract water-based paint from the workbench 100 and pump it into the delivery pipe 320 for sampling and testing. From top to bottom, the delivery pipe 320 is first a vertical first pipe section 321, and then the lower part of the first pipe section 321 is branched into a second pipe section 322 and a third pipe section 323. The second pipe section 322 is further branched into a fourth pipe section 324 and a fifth pipe section 325.

[0039] Embodiment 2: This embodiment is an improvement on Embodiment 1. For details, please refer to Figure 1-Figure 6 The first overflow valve assembly 410 includes an adjusting seat 415 threadedly connected to the second pipe section 322, a mounting seat 411 is provided on the adjusting seat 415, a valve core 412 is slidably provided on the mounting seat 411, a first valve seat 413 matching with the valve core 412 is provided in the second pipe section 322, and the valve core 412 is elastically connected to the mounting seat 411 through a spring 414.

[0040] The structure of the second relief valve assembly 420 is the same as that of the first relief valve assembly 410 .

[0041] The pipeline mechanism 300 also includes a fifth pipeline segment 325 arranged at the lower end of the second pipeline segment 322, a sixth pipeline segment 326 is arranged at the lower end of the fifth pipeline segment 325, and a third overflow valve assembly 430 is arranged between the fifth pipeline segment 325 and the sixth pipeline segment 326. The structure of the third overflow valve assembly 430 is the same as that of the first overflow valve assembly 410, and the rated pressure of the third overflow valve assembly 430 is greater than that of the second overflow valve assembly 420.

[0042] When the density value of the water-based paint is greater than the standard range, the water-based paint enters the sixth pipe section 326 . A fourth liquid pump 380 and a second reflux pipe 390 are provided on the workbench 100 . The sixth pipe section 326 is connected to the interior of the workbench 100 through the fourth liquid pump 380 and the second reflux pipe 390 .

[0043] The first overflow valve assembly 410 , the second overflow valve assembly 420 and the third overflow valve assembly 430 are all provided with a fixing assembly 440 . The fixing assembly 440 includes a fixing frame 441 provided on the delivery pipeline 320 . A first rotating rod 442 is rotatably provided on the fixing frame 441 .

[0044] The first rotating rod 442 is elastically connected to the fixing frame 441 through a torsion spring 443, a buckle 444 is arranged on the first rotating rod 442, a slot 445 matching with the buckle 444 is opened on the valve core 412, an electric push rod 446 is arranged on the conveying pipeline 320, and an output shaft of the electric push rod 446 is movably hinged to the buckle 444 through a hinge shaft.

[0045] In this embodiment: the structure of the first overflow valve assembly 410 installed between the first pipeline section 321 and the second pipeline section 322 is as follows: at a horizontal additional pipeline between the first pipeline section 321 and the second pipeline section 322, the position of the mounting seat 411 is fixed, the valve core 412 is in the leftmost state under the elastic support of the spring 414, and the valve core 412 is embedded in the first valve seat 413 installed on the inner wall of the second pipeline section 322. At this time, the liquid cannot enter the second pipeline section 322 through the first valve seat 413. The adjustment seat 415 adjusts the rated pressure of the valve core 412 by rotating the initial compression amount of the adjustment spring 414. The second overflow valve assembly 420 has the same structure as the first overflow valve assembly 410, but has a higher rated pressure.

[0046] First, a rated volume of water-based paint enters the first pipe section 321, and the rated pressure of the first overflow valve assembly 410 is set to correspond to the lower limit of the standard range of water-based paint density, and the rated pressure of the second overflow valve assembly 420 corresponds to the upper limit of the water-based paint density range.

[0047] If the density of the water-based paint is less than the lower limit, the pressure generated by the rated volume of liquid at the first valve seat 413 is insufficient to push the valve core 412. At this time, the first solenoid valve 330 can be opened, and the second liquid pump 340 can be operated to pump the water-based paint back to the workbench 100 through the first reflux pipe 350 for re-stirring and mixing.

[0048] If the density of the water-based paint is within the standard range, the valve core 412 is pushed to the right, and after moving to the right, the slot 445 fits with the buckle 444, and the buckle 444 is inserted into the slot 445 to fix the valve core 412, so that the water-based paint can continue to pass through the first valve seat 413 into the second pipeline section 322. After the test is completed, the buckle 444 can be driven by the electric push rod 446 to rotate and be pulled out of the slot 445 to reset the valve core 412.

[0049] Then the water-based paint enters the second pipeline section 322, but is not enough to push the valve core 412 in the second overflow valve assembly 420. At this time, the third liquid pump 370 can be opened to pump the water-based paint into the storage tank 240 through the third liquid pump 370 to store it as a qualified product.

[0050] If the density of the water-based paint is greater than the upper limit, the rated volume of liquid is sufficient to open the first relief valve assembly 410 and the second relief valve assembly 420 .

[0051] Embodiment 3: This embodiment is an improvement made on the basis of Embodiment 2. For details, please refer to Figure 1-Figure 8 , and also includes an adjusting mechanism 500, the adjusting mechanism 500 includes a first adjusting component 510 and a first butterfly valve component 520, the first adjusting component 510 is arranged on the first pipeline section 321, and the first butterfly valve component 520 is arranged on the injection pipeline 230.

[0052] When the density value of the water-based paint is less than the standard range, the first butterfly valve assembly 520 is adjusted through the first adjustment assembly 510 to increase the injection amount of the powder.

[0053] The first butterfly valve assembly 520 includes a second valve seat 521 disposed on the injection pipe 230 , a valve stem 522 is rotatably disposed on the second valve seat 521 , and a butterfly plate 523 is disposed on the valve stem 522 .

[0054] The first adjustment component 510 includes an external pipe 511 arranged on the first pipe section 321, a piston rod 512 is slidably arranged in the external pipe 511, a fixed seat 513 is arranged on the external pipe 511, a second rotating rod 514 is rotatably arranged on the fixed seat 513, a gear 515 is arranged on the second rotating rod 514, a rack 516 meshing with the gear 515 is arranged on the piston rod 512, and the second rotating rod 514 is transmission connected to the valve stem 522 through a ratchet transmission device 517.

[0055] The ratchet transmission device 517 includes a turntable 5171 arranged on the valve stem 522, a ratchet 5172 is arranged on the gear 515, two pawls 5173 meshing with the ratchet 5172 are rotatably arranged on the turntable 5171, and two spring sheets 5174 are also arranged on the turntable 5171. The two spring sheets 5174 press the two pawls 5173 onto the ratchet 5172.

[0056] The regulating mechanism 500 also includes a second regulating component 530 and a second butterfly valve component 540. The second regulating component 530 is arranged on the fifth pipeline section 325, and the second butterfly valve component 540 is arranged on the injection pipeline 210. The structure of the second regulating component 530 is consistent with that of the first regulating component 510, and the structure of the second butterfly valve component 540 is consistent with that of the first butterfly valve component 520.

[0057] When the density value of the water-based paint is greater than the standard range, the second butterfly valve assembly 540 is adjusted by the second adjustment assembly 530 to increase the injection amount of the water-based solvent.

[0058] In this embodiment, when the first overflow valve assembly 410 is not opened after injecting a rated amount of water-based paint, before opening the first solenoid valve 330, the first liquid pump 310 may be used to continue injecting water-based paint at a uniform speed. The volume setting in the pipeline can meet the additional amount of liquid injection.

[0059] The rated amount of liquid will not rise to the liquid level of the fixed seat 513, and continued injection will push the fixed seat 513 up. At this time, the fixed seat 513 drives the rack 516 to rise, and then drives the gear 515 and the second rotating rod 514 to rotate. The second rotating rod 514 drives the ratchet 5172 to rotate. At this time, the rotation direction of the ratchet 5172 is stuck with the direction of the teeth of the pawl 5173, which will drive the rotation of the rotating disk 5171, the valve stem 522 and the butterfly plate 523. The initial position of the butterfly plate 523 is set as follows Figure 4 As shown in , at this time, the rotation of the butterfly plate 523 will increase the opening degree of the second valve seat 521, thereby increasing the injection amount of the powder and improving the density of the subsequently produced water-based paint.

[0060] After the first solenoid valve 330 is opened to allow the water-based paint to flow out, the piston rod 512 descends, and the ratchet transmission device 517 is a one-way transmission and will not drive the position of the butterfly plate 523 to change.

[0061] And because the specific density values ​​of water-based paint are different, the injection amount required to continue injecting water-based paint until the first overflow valve assembly 410 is opened is different, so the piston rod 512 rises and drives the butterfly plate 523 to rotate at different angles, thereby specifically controlling the increase in the amount of powder injection.

[0062] Similarly, when the density of the water-based paint is greater than the standard range, a third overflow valve assembly 430 is selected to be set between the fifth pipe section 325 and the sixth pipe section 326. The rated pressure of the third overflow valve assembly 430 is greater, and the water-based paint is not enough to open the third overflow valve assembly 430 at the rated volume. At this time, the first solenoid valve 330 and the second solenoid valve 360 ​​are kept closed.

[0063] Similarly, the water-based paint is continuously injected at a uniform speed until the third overflow valve assembly 430 is opened. In this process, the second butterfly valve assembly 540 is adjusted by the second adjustment assembly 530, so that Figure 8 As shown in the figure, the butterfly plate 523 in the second butterfly valve assembly 540 rotates, and the initial opening amount of the butterfly plate 523 in the second butterfly valve assembly 540 is the maximum. After rotation, the opening degree is reduced, so that the injection amount of the aqueous solvent is reduced, and the specific reduction amount also depends on the specific density of the aqueous paint.

[0064] Then, the water-based paint can be pumped back into the workbench 100 through the second reflux pipe 390 by the fourth liquid pump 380 for re-stirring and mixing.

[0065] It should be supplemented that the above detection and adjustment process can be automatically realized by installing sensors at each pipeline and using an intelligent control system.

[0066] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0067] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A production device for water-based paint for railway engineering, comprising a workbench (100), characterized in that: A reaction kettle (200) is arranged on the workbench (100), and a water-based coating is generated by injecting powder and an aqueous solvent into the reaction kettle (200) for reaction; The workbench (100) is further provided with a pipeline mechanism (300) and a density detection mechanism (400); the pipeline mechanism (300) comprises a delivery pipeline (320) arranged on the workbench (100); the reaction kettle (200) is provided with a first liquid pump (310); the delivery pipeline (320) comprises a first pipeline section (321) connected to the first liquid pump (310); the lower end of the first pipeline section (321) is connected to two passages, namely a second pipeline section (322) and a third pipeline section (323); the lower end of the second pipeline section (322) is connected to a fourth pipeline section (324); The density detection mechanism (400) comprises a first overflow valve assembly (410) arranged between the first pipeline section (321) and the second pipeline section (322); a second overflow valve assembly (420) is arranged at the lower end of the second pipeline section (322); the rated pressure of the second overflow valve assembly (420) is greater than that of the first overflow valve assembly (410); The water-based paint produced by the workbench (100) is quantitatively injected into the first pipeline section (321) through the first liquid pump (310); when the density value of the water-based paint is within the standard range, the water-based paint enters the fourth pipeline section (324); when the density value of the water-based paint is lower than the standard range, the water-based paint enters the third pipeline section (323).

2. A railway engineering water-based paint production device according to claim 1, characterized in that: The reaction kettle (200) is provided with a liquid injection pipeline (210) for injecting an aqueous solvent, the workbench (100) is provided with a pneumatic conveying device (220) and a storage tank (240), the pneumatic conveying device (220) is connected to the inside of the workbench (100) via a material injection pipeline (230) for injecting powder, and the fourth pipeline section (324) is connected to the inside of the storage tank (240); The reaction kettle (200) is provided with a motor (250) and a stirring paddle (260), and an output shaft of the motor (250) is connected to the stirring paddle (260).

3. A railway engineering water-based paint production device according to claim 2, characterized in that: The pipeline mechanism (300) further comprises a first solenoid valve (330) arranged on the third pipeline section (323); a second liquid pump (340) and a first reflux pipeline (350) are arranged on the workbench (100); the third pipeline section (323) is connected to the interior of the reaction kettle (200) via the second liquid pump (340) and the first reflux pipeline (350); The fourth pipeline section (324) is provided with a second electromagnetic valve (360), the storage tank (240) is provided with a third liquid pump (370), and the fourth pipeline section (324) is connected to the interior of the storage tank (240) through the second electromagnetic valve (360) and the third liquid pump (370).

4. A railway engineering water-based paint production device according to claim 2, characterized in that: The first overflow valve assembly (410) comprises an adjusting seat (415) threadedly connected to the second pipe section (322); a mounting seat (411) is arranged on the adjusting seat (415); a valve core (412) is slidably arranged on the mounting seat (411); a first valve seat (413) matching with the valve core (412) is arranged in the second pipe section (322); and the valve core (412) is elastically connected to the mounting seat (411) via a spring (414); The structure of the second overflow valve assembly (420) is the same as that of the first overflow valve assembly (410).

5. The production device of water-based paint for railway engineering according to claim 4, characterized in that: The pipeline mechanism (300) further comprises a fifth pipeline segment (325) arranged at the lower end of the second pipeline segment (322); a sixth pipeline segment (326) is arranged at the lower end of the fifth pipeline segment (325); a third overflow valve assembly (430) is arranged between the fifth pipeline segment (325) and the sixth pipeline segment (326); the structure of the third overflow valve assembly (430) is the same as that of the first overflow valve assembly (410), and the rated pressure of the third overflow valve assembly (430) is greater than that of the second overflow valve assembly (420); When the density value of the water-based paint is greater than the standard range, the water-based paint enters the sixth pipe section (326); a fourth liquid pump (380) and a second return pipe (390) are provided on the workbench (100); and the sixth pipe section (326) is connected to the interior of the workbench (100) through the fourth liquid pump (380) and the second return pipe (390).

6. The production device of water-based paint for railway engineering according to claim 5, characterized in that: The first overflow valve assembly (410), the second overflow valve assembly (420) and the third overflow valve assembly (430) are all provided with a fixing assembly (440), the fixing assembly (440) comprising a fixing frame (441) provided on the delivery pipeline (320), and a first rotating rod (442) is rotatably provided on the fixing frame (441); The first rotating rod (442) is elastically connected to the fixing frame (441) via a torsion spring (443); a buckle (444) is provided on the first rotating rod (442); a slot (445) that fits with the buckle (444) is provided on the valve core (412); an electric push rod (446) is provided on the conveying pipeline (320); an output shaft of the electric push rod (446) is movably hinged to the buckle (444) via a hinge shaft.

7. The production device of water-based paint for railway engineering according to claim 5, characterized in that: The invention also comprises an adjusting mechanism (500), wherein the adjusting mechanism (500) comprises a first adjusting component (510) and a first butterfly valve component (520), wherein the first adjusting component (510) is arranged on the first pipeline section (321), and the first butterfly valve component (520) is arranged on the injection pipeline (230); When the density value of the water-based paint is less than a standard range, the first butterfly valve assembly (520) is adjusted through the first adjustment assembly (510), thereby increasing the injection amount of the powder.

8. The production device of water-based paint for railway engineering according to claim 7, characterized in that: The first butterfly valve assembly (520) comprises a second valve seat (521) arranged on the injection pipe (230), a valve stem (522) being rotatably arranged on the second valve seat (521), and a butterfly plate (523) being arranged on the valve stem (522).

9. The production device of water-based paint for railway engineering according to claim 8, characterized in that: The first adjustment component (510) comprises an external pipe (511) arranged on the first pipe section (321), a piston rod (512) being slidably arranged in the external pipe (511), a fixing seat (513) being arranged on the external pipe (511), a second rotating rod (514) being rotatably arranged on the fixing seat (513), a gear (515) being arranged on the second rotating rod (514), a rack (516) meshing with the gear (515) being arranged on the piston rod (512), and the second rotating rod (514) being transmission-connected to the valve stem (522) via a ratchet transmission device (517); The ratchet transmission device (517) comprises a rotating disk (5171) arranged on the valve stem (522), a ratchet (5172) being arranged on the gear (515), two ratchet pawls (5173) rotatably arranged on the rotating disk (5171) and meshing with the ratchet (5172), and two spring sheets (5174) are also arranged on the rotating disk (5171), and the two spring sheets (5174) press the two ratchet pawls (5173) against the ratchet (5172).

10. The production device of water-based paint for railway engineering according to claim 9, characterized in that: The regulating mechanism (500) further comprises a second regulating component (530) and a second butterfly valve component (540); the second regulating component (530) is arranged on the fifth pipeline segment (325); the second butterfly valve component (540) is arranged on the injection pipeline (210); the structure of the second regulating component (530) is consistent with that of the first regulating component (510); and the structure of the second butterfly valve component (540) is consistent with that of the first butterfly valve component (520); When the density value of the water-based paint is greater than the standard range, the second butterfly valve assembly (540) is adjusted through the second adjustment assembly (530), thereby increasing the injection amount of the water-based solvent.

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