Monthly Archives: November 2015

Shale shaker bring convenience to the farmers

In times of high speed development of science and technology, farming is also moving closer to mechanized production. Mechanized production has brought convenience to the farmers, but it can not completely relieve the farmers’ worries…… Take wheat for example, after the harvest by means of large harvester, there still some residual weed, dust, platycodon. In fact, not just the wheat, harvest of rice, corn, jowar also have this problem. So let the late clean-up work have some trouble…… For this problem, we have developed a series of grain sorting equipment. This device is to sift through the vibrating screen to remove debris. The commissariats can achieve the purpose of screening by controlling the opening and closing of the gate, it can take a long-term screening after once feeding.

Wheat sorting machine is mainly used for wheat classification and impurities, we can choose it according to different needs: ordinary rotary shale shaker, and edge type vibrating screen, gate type vibrating screen, which is also called starch special screening, can be used for the screening classification of wheat starch, flour, corn starch, etc..


Rice sorting shale shaker of rice is mainly used for removing impurity and classification. Seed rice vibrating screen can remove the impurity, dust, weeds in the rice, it can also make the classification of rice. Specific rice sieve extension can be divided into several levels, which can be according to the specific needs of customers to develop rice sieving machine layers, screen mesh, and rice sieving machine size.

Corn sorting shale shaker machine is mainly used for niblet size classification, which is a practical application of DZSF type linear shale shaker. Specific screening process is: material from the feeder evenly into the shaker feeding port, under the excitation of vibration motor, move up and down to the direction of the discharge port side and screening, through the multilayer sieve screening out several kinds of products and unqualified materials above and down the sieve, separately from their respective export discharged into the hopper or holding barrel.

Erosion problem of cyclone desander

(1) Erosion is caused by high velocity fluid which carrying a solid phase.

(2) Erosion often occurs in the interior of the pipeline, at the place of the constriction, at the corner of the bend, and where there is a turbulent flow. Erosion can cut the pipe in a few minutes, causing the damage of whole system, and this damage will not be repaired, this damage is not visible in the visual.


(3) The velocity of the fluid in the pipe is directly related to the flow of the fluid. In the short-term exploration tests, to the pipeline that for installed forever the flow rate standard recommended by the 14E API is not permitted for permanent installations.

(4) In the last hours of exploration test, if there is no sand output, velocity can be exceed the standards of API 14e, in case if there is out of the sand, we must abide by the API defined speed. Gas pipeline 80 feet / sec (/ s) tubing line within 15 feet / sec (4.5m / s).

Why carrying out drilling fluid waste management

Waste drilling fluid produced in the processes of drilling and production is a kind of multi phase stable colloidal suspension of objects containing clay, weight materials, various chemical treatment agent, sewage, waste oil and cuttings. The main ingredients of impact on the environment are hydrocarbons, salts, polymers, heavy metal ion, impurities in barite and asphalt and other modified materials. The major environmental pollutants have the characteristics of high COD, high BOD, high oil, high Ci, high pH, high hanging objects, and contains heavy metal salts. If remaining it in the wellsite storage pool, it will produce adverse effects on  underground (table) water and soil, and endanger the surrounding ecological environment, and may even cause pollution accident. With the increasingly stringent environmental standards of national and local environmental protection requirements, environmental compliance management work is an urgent task, the task is arduous.

drilling waste management

Drilling waste mud is one of the main pollution sources of oil and gas industry, and the waste disposal is a difficult problem in the field of petroleum and natural gas industry. In the <the national hazardous waste list > abandoned in 2008, the “waste sludge processing drilling fluid produced” (waste code 071-002-08) has been included in the national hazardous waste names. Along with national laws and regulations are becoming more and more perfect, improvement of environmental protection requirements of local government and Enhancement of environmental protection consciousness in oil field, The development of drilling waste treatment technology is imperative.

Direction for use of DC submersible slurry pump

When submersible slurry pump dealing with the slurry containing a lot of impurity particles, a filtration net is placed on the water inlet, this can reduce the the impurity particles into the pump body, and reduce probability of pump be stuck and prolong the service life of slurry pump. Using time of slurry pump should not be too long, if you have a spare pump, it is best to take turns in the form of operation work.

Pats of submersible slurry pump have adopted mechanical seal, the use of this kind of slurry pump must guarantee seal water supply, and forbid the anhydrous state operation, avoid burnout of the mechanical seal because of dry grinding. Generally speaking, before the use of slurry pump with mechanical seal, should connect the shaft seal water, and should at least keep the water supply for more than 3 minutes after stopping the pump.


Submersible slurry pump produced by DC Machinery company have good performance and high quality, feel free to contact us if you want purchase this kind of product.


The mechanical seal is generally used in the condition of submersible slurry pump has relatively high demand for sealing. When the submeisible slurry pump equipped with mechanical seal liquid and spare parts is not used for a long period of time, mechanical seal part should be filled with the N46 machinery oil to prevent mechanical seal parts rusting and the internal rubber parts losing efficacy. Mechanical seal have the characteristics of no leakage, low power consumption and others. And the most important is not allow to the addition of extra ingredients into the pump body. The disadvantage is that the cost is high, maintenance difficulties, etc..

The effect of different types of screening shaker

The size, shape and operation mode of shale shaker screen have a variety of ways. Together with the performance of drilling fluid, the type the number of drilling bits on the screen surface and the general mechanical condition of the equipment, the working effect of the shale shaker is determined.



When drilling a well, the selection of the vibrating screen may be appropriate or may not be appropriate for drilling tools . If it is not appropriate, the shale shaker must continue to work, and it is possible to solve the problem through proper and reasonable operation. All commercial shale shakers can be used to remove the solid phase, but under the correct maintenance and operation, it will be more powerful.

Some elements wil impact the efficiency improvement of linear shale shaker

Production efficiency of linear shale shaker will be influenced by many factors, such as the power vibration motor, and the physical properties of screening materials. In addition, we know that the output size of linear shale shaker depends on the width of sieve surface, and the screening accuracy depends on the screen length. So length and width of the screen is also an important factor can not be ignored that inspects the sifting efficiency.


In addition, the relationship between the width and length of the linear vibrating screen should also be grasped properly, if the width is too small and the length is too long, it will lead to the layer thickness on the screen, and difficult to screen; when the width is too big and the length is too small, although the material is slightly thin, but the residence time of particle in the sieve surface is shortened, and the screen penetration rate is still difficult to improve, we believe that the golden ratio between the width and length of the linear shale shaker is: 1:2.5-1:3.

What are the technical specifications of drilling rigs?

Overall technical requirements

(1) The equipment need to meet the requirements of open job site and exactly demand in explosion-proof, anti leakage, corrosion, anti dust, high temperature resistance, and the rigs need to has high adaptability and be easy for inspection, maintenance and repair;

(2) Make sure that all liquid, gas, electric wires are standard, safe and reliable, reasonable layout, clear identification, installation and fixation is according to the relevant standards and specifications;

(3) All electrical equipment in the hazardous area is required to meet the explosion-proof requirements, and provide a certificate of explosion;

(4) The alarm, spacing limit and interlocking device of the drilling rig are sensitive, reliable and accurate. All safety equipment (pressure vessel) has qualification certificate and inspection report;

(5) The complete set of rigs equipment is equipped with safety signs and warning signs;

(6) The overall layout of the drilling rig is reasonable and the simplicity of the drilling rig is considered. Need to have a strong ability to transport at the hilly region, the truck-mounted drilling rig design including axle load, caarry capacity, brake, lighting, size, etc. to meet the requirements of highway transportation

(7) The drilling rig equipment must be equipped with an FZ18-14 type blowout prevention device;

(8) The drilling rig equipment must be equipped with a complete set of top drive device.

Matters need attention when starting screw pump

(1) Should check and ensure that the machanical and electrical is normal before starting. The opening and closing state of the valve, gear box and the bearing cavity oil level is normal.

(2) Before the start of the pump, it must be filled with oil. Although the screw pump with self absorption capacity, you should avoid the occurrence of dry friction before the oil suction because of the high speed, or it will cause damage to parts, even heating and burnt out.

(3) The screw pump should be started in the case of suction and discharge valve are all opened, to prevent overload or air suction. To the screw pump that with low temperature, high viscosity or large displacement, it should be started in the case of pump suction, discharge valve and bypass valve being all opened, in order to reduce the starting load, and turn down the bypass valve when the pump reach the rated speed.

Contact us if you want to purchase a product like this.


The screw pump is not allowed to close the discharge valve for a long time, and do the back-flow operation through regulating the valve completely. Also should not rely on the large flow of pressure relief valve to meet the needs of small flow pump. In this way throttle loss is serious, will cause the temperature rise of the liquid discharged from  screw pump, and even the deformation and damage of pump due to high temperature.

(4) It should be stopped after the start of the pump without oil discharge, and start it again after pouring oil, if failure, check whether the suction pipe is leaking, the filter is dirty and so on. You can start it again after troubleshooting.