Tape Measure is a commonly used tool in daily life. What you often see is the Steel Tape Measure, which is a commonly used tool in construction and decoration, and it is also one of the necessary tools for the family. Divided into fiber tape measure, tape measure, waist circumference and so on. Luban ruler, Feng Shui ruler and Wen Gong ruler are also Steel Tape measures.
Henan liangjin tools co.,Ltd founded
1999, is a modern chemical measuring tool manufacturer integrating
scientific research, development, production and export sales. Abs Plastic Tape Measure,Plastic Coated Tape Measure,Plastic Tape Measure,Tape Measure Scale Henan Liangjin Tools Co.,Ltd , https://www.liangjintools.com
Vertical multi-stage pump installation specifications introduced
[Asia Pump Network News] vertical multistage pump is widely used, commonly used for water supply, industrial pressurization, industrial liquid transport, water treatment, irrigation use. Vertical multi-stage pump has the overall structure of compact, small size, light weight, low noise, energy-saving effect, easy maintenance and so on. The following Xiaobian take you to learn more about the vertical multi-stage pump installation bar. Vertical multistage pump installation specifications (1) Preparation of centrifugal pumps before installation ①Carefully check the various parts for damage, the mating surface wipe clean, and re-coated with anti-rust surface oil. ② Careful examination of the foundations of the situation, the experience shows that the basis of concrete pouring is very good, such as the foundation for the concrete structure, and separated by a working seam ', you can make the vibration from all sides to a minimum. ③ ready to install the necessary tools and lifting equipment. Vertical multistage pump installation specifications ①The installation of the housing part In any case, can not use the suction horn Vl as a pump support or use the bell mouth for similar purposes. Put the pump mounting plate into the basic reserved hole, and place the horn under the plate. Adjust the horn and initial plate level. Apply the sealant evenly on the flare flange mating surface and connect the flare to the outer tube a with a M30 × 80 stud. Place sleepers or other supports on the centrifugal pump mounting plate and place the attached outer tube a and suction bell on the sleeper or other support. Apply a sealant evenly to the flange surface of the external pipe b, connect the external pipe b with the external pipe a with a bolt M30 × 140, and place the assembly on the sleeper or other support. Also, connect the external pipe C with the external pipe b connected together placed on the sleepers or other support; on the pin hole direction, the external pipe d and spit elbow bolt M30 × 140 connected to the external pipe d placed on sleepers or other support; support plate with Stud M30 × 85 with the external pipe e connected together, this component with a bolt M30 × 140 and the external pipe d connected to sleepers or other support. Lift the connected shell, remove the support, the pump mounting pad with a clean surface, and evenly coated with a week sealant, put down the pump housing, and the initial bolt to anchor the shell in the foundation on. Calibrate the pump to a level of 0.05 / 1000 or less. Tighten the anchor bolts, grouting pouring pump installation pad. At this point, the pump casing part is installed. ② pumping part of the installation Only after the second grouting layer can be completely cured after the pumping part of the assembly. From the impeller end of the main shaft into the two bushing, in turn slide through the short key slot at each key slot fitted with a 812 × 54 key, the sleeve back to the key position to withstand, in each sleeve Three screw holes screwed three Ml0 × chemical pump 12 screws. Place the impeller on a beam with a height of about one person. Attach a 845 × 270 key at the lower end of the main shaft a. Screw the M48 eyebolt on the other end of the main shaft a. Hang the main shaft a over the impeller and lower the main shaft a , The spindle a through the spindle hole in the impeller, the main shaft a and impeller mounted on the impeller ring, with four M24 × 60 bolts, spring washer impeller ring will be fixed to the impeller, and then hoisted assembled parts In the impeller room. M20 × 50 studs will be mounted on the rubber guide bearing the lower end of the guide vane at the same time with the M20 × 75 studs will take over a, rubber guide bearing and the upper end of the guide vane connected to lift this component to the spindle a Above, through the spindle a, slowly down, with M30 × 80 studs will guide vane body and the impeller room connected. When assembling the above components, apply mechanical sealant on each mating surface. Suspension Spindle a The assembly is placed inside a multistage centrifugal pump housing and supported on a sleeper with a B45 × 230 key attached to the upper end of the spindle a. Install a Bl2 × 54 key at the bushing's bushing, install the bushing, and attach a B45 × 230 key on the lower end to erect the bushing coupling on a platform so that the bushing with 4 screws The hole ends down. Lift the spindle b above the sleeve coupling and slowly lower it so that the shaft passes through the inner bore of the sleeve coupling and push the sleeve coupling straight up until the key is uncovered, Screw on the outer circumference of the two fixing screws to fix it to the shaft. Spindle the spindle b above the spindle a, center the two shafts, attach the coupling snap ring to the shaft, loosen the fixing screw on the coupling, slowly drop and slide the coupling snap ring to the stop snap ring position , And with the thrust snap ring Ml2 × 40 bolts together. In the meantime, connect the inner pipe b with the inner pipe a with bolts M20 × 7 5. Bearing bracket stud M20 × 7 5 with the guide bearing connection, lifting the bearing bracket through the spindle b, and the internal pipe b with M20 × 50 studs. A 812 × 54 key is mounted on the spindle bearing C and a Bl2 × 54 key is also fitted on the packing sleeve. Fit the packing sleeve and sleeve nut and attach a B45 × 300 at the other end Key Tighten the sleeve nuts to the shaft with three M12 × 12 screws. With the spindle b and spindle a method, the spindle C and spindle b together. Lift the shaft connector, remove the sleepers, release the external pipe a, pay attention to the impeller chamber anti-rotation block stuck in the outer tube anti-rotation slot to prevent rotation when driving. At this point, pumping part of the installation is completed. ③ pump cover plate, the diversion plate take over, the guide plate, the installation of packing parts The pump cover plate and the guide piece, the guide piece take over the connection, with the drive will be diverted to the top of the spindle assembly C components, adjust the guide The direction of the flow sheet, put through the shaft down, with a set of M30 × 95 studs pump cover and support plate together. The rubber guide bearing with stud Ml 6 × 45 into the stuffing box bearing cavity, with the car hoisted to the top of the spindle C, the shaft put the diverter tube take over the stuffing box body cavity, with a set of M24 × 60 studs connect the stuffing box to the pump cover. Pump Coupling Installation: Install the pump coupling and shaft adjustment nut on the upper part of the spindle C. ④ Motor support and motor installation Hang the motor support to the top of the pump support plate with M30 × 95 studs to connect it with the pump support plate, the motor support is installed, hit the flange of the motor support surface hit Level, the level of tolerance is 0.O5 / 1O00. Centering of the pump shaft in the stuffing box: Adjust the center of the pump shaft in the stuffing box with a wedge block to coincide with the pump center. The radial tolerance is 0.05mm. Pump, motor shaft alignment: Refer to the motor installation instructions, installed motor coupling and motor. Manually turn the motor shaft, with the dial indicator to measure the radial runout motor coupling, the radial tolerance of 0.05mm. Motor and pump shaft alignment: Install a dial indicator on the pump coupling, turn the motor shaft by hand and move the motor until the runout is within 0.05 mm. After the motor is aligned with the pump shaft, secure the motor to the motor support with a bolt and position it with the locating pin. ⑤ Rotor clearance adjustment Pump rotor correctly raise the height Print on the pump plate, start the pump, you must check the rotor lift the correctness of the height. Determine whether the rotor has landed in the extreme position; Remove the coupling between the pump shaft and the shaft adjustment nut; Adjust the nut on the shaft until the upper face and the motor coupling flange face close; Downward rotation axis End adjustment nut, the rotor height increased 4.5ram, if the pump shaft and shaft adjustment nut screw position does not match, you should continue to rotate the shaft end adjustment nut until the two bolt holes coincide. Install the coupling bolt between the shaft adjustment nut, diagonally alternately gradually tighten the nut, and finally tighten the connecting nut with a torque of 500-600N.m. ⑥ packing installation Pump delivery shipping, the packing is not filled into the stuffing box, but a set of packing packed in a small box and shipped with the pump. The correct installation of the pump is essential for efficient pump operation. Pay attention to the following instructions: Remove the packing gland and clean the packing box. Place a packing into the packing box each time and ensure the packing is in the correct position. The rings When the packing of the last ring is loaded, reload the packing gland, tighten the nut evenly until it is flush, then loosen the nut and re-tighten it to the "finger tight" level. After the pump has been started, the amount of leakage can be controlled by adjusting the packing gland nut. This operation is recommended to be done slowly, with each adjustment a little until a suitable amount of leakage is achieved. ⑦ final test After installation according to the above steps, re-check the impeller room through the bevel gap value is installed in place, lift the rotor rotor position by lifting the rotor position, and detect the gap between the vane and the impeller is uniform. At this point, the pump no longer need to conduct other tests. The packing gland must not compress the packing until the water leaks from the packing. Fillers always require some amount of leaked water to lubricate, eliminating leaks that flow outward from the stuffing box, which can cause the packing to burn out, scratch the sleeve, and possibly jam the rotor. Further reading: Motor IFAT China's top ten brands Guangzhou Exhibition building water pump manufacturers ranking ptc Show article belongs to Internet industry (Xiamen) Co., Ltd. All are welcome to reprint, please indicate the source and author of: Asian pumps Network Editor : Gogoing (QQ / wechat:) starting: http://beng.liuti.cn/ (service hotline:)