Raw material grinding device for producing filtrate reducer

Abstract

The utility model relates to the field of drilling fluid production equipment, in particular to a raw material grinding device for producing a filtrate reducer, which comprises a shell, a fixed block arranged in the shell, a conical groove arranged at the lower end of the fixed block, a feeding pipe arranged at the upper end of the fixed block and communicated with the conical groove, and a grinding cone rotationally arranged at the bottom end in the shell. The grinding cone is inserted into the conical groove, a cavity is formed in the fixing block and filled with cooling liquid, a liquid outlet hose and a liquid inlet hose are arranged at the upper end and the lower end of the cavity respectively, and a cooling liquid conveying mechanism connected with the liquid outlet hose and the liquid inlet hose is arranged outside the shell. Cooling liquid circularly flows between the cavity and the cooling liquid conveying mechanism, and high temperature generated by friction between the grinding cone and the fixing block is reduced.

Description

Technical Field

[0001] The utility model relates to the field of drilling fluid production equipment, in particular to a raw material grinding device for producing basic filtration loss reducers. Background Art

[0002] The filtration loss reducer is a Chinese medicine component in drilling fluid. The functions of the filtration loss reducer are: improving the efficiency of fracturing fluid, reducing the damage to oil and gas layers, forming a filter cake to protect the wellbore, improving the performance of cement slurry, and reducing the filtration loss. The production process of the filtration loss reducer includes: feeding, stirring, cooling, and grinding. A grinder is used in the grinding operation. During the grinding process of the existing grinder, a large amount of heat will be generated due to high-speed friction. Due to thermal expansion and contraction, the size of the grinding mechanism will change, affecting the particle size of the finished product. Therefore, it is particularly necessary to develop a raw material grinding device for producing basic filtration loss reducers with a cooling mechanism that can be cooled during the grinding process. Summary of the Invention

[0003] The purpose of the utility model is to provide a raw material grinding device for producing basic filtration loss reducers, which has the function of being able to be cooled during the grinding process.

[0004] The adopted technical solution is as follows:

[0005] A raw material grinding device for producing basic filtration loss reducers includes a housing. A fixed block is arranged inside the housing. A conical groove is opened at the lower end of the fixed block. A feed pipe communicating with the conical groove is arranged at the upper end of the fixed block. A grinding cone is rotatably arranged at the bottom end inside the housing, and the grinding cone is inserted into the conical groove. A cavity is opened inside the fixed block, and a cooling liquid is filled in the cavity. An outlet liquid hose and an inlet liquid hose are respectively arranged at the upper and lower ends of the cavity. A cooling liquid conveying mechanism connected to both the outlet liquid hose and the inlet liquid hose is arranged outside the housing.

[0006] Preferably, a end cover is covered at the upper end inside the housing, and a high-precision telescopic mechanism vertically connected to the fixed block is arranged at the lower end of the end cover.

[0007] Preferably, a baffle is arranged on the side of the fixed block, and a sealing ring connected to the inner wall of the housing is arranged outside the baffle.

[0008] Preferably, the end cover is provided with a feed funnel. A telescopic pipe is connected to the lower end of the feed funnel, and the lower end of the telescopic pipe is connected to the feed pipe.

[0009] Preferably, the cooling liquid conveying mechanism includes a cooling liquid tank. A refrigeration mechanism is arranged on the cooling liquid tank. A delivery pump is arranged inside the cooling liquid tank. The delivery pump includes an output pipe, the output pipe is connected to the inlet liquid hose, and the outlet liquid hose is connected to the cooling liquid tank.

[0010] Preferably, an annular groove is arranged on the lower end surface of the housing, and a plurality of discharge valves are arranged at the lower end of the annular groove.

[0011] Compared with the prior art, the beneficial effects are as follows:

[0012] 1. The utility model uses a coolant conveying mechanism to convey low-temperature coolant into the cavity inside the fixing block. The coolant circulates between the cavity and the coolant conveying mechanism to cool down the high temperature generated by the friction between the grinding cone and the fixing block, thereby avoiding the accumulation of high temperature generated by grinding powder.

[0013] 2. The high-precision telescopic mechanism of the utility model controls the lifting of the fixing block to adjust the gap between the conical groove and the grinding cone, thereby adjusting the particle size of the ground powder. Description of the Drawings

[0014] Figure 1 is a schematic structural diagram of a raw material grinding device for producing a base fluid loss reducer of the utility model,

[0015] Figure 2 is Figure 1 the structural schematic diagram at A in

[0016] Figure 3 is a three-dimensional structural schematic diagram of the fixing block of a raw material grinding device for producing a base fluid loss reducer of the utility model,

[0017] In the figure: 1. Outer shell, 2. Fixing block, 3. Conical groove, 4. Feed pipe, 5. Grinding cone, 6. Driving mechanism, 7. Annular groove, 8. Discharge valve, 9. End cover, 10. High-precision telescopic mechanism, 11. Baffle, 12. Sealing ring, 13. Feed funnel, 14. Telescopic pipe, 15. Cavity, 16. Liquid outlet hose, 17. Liquid inlet hose, 18. Coolant conveying mechanism. Detailed Embodiments

[0018] The following further describes the utility model in conjunction with specific embodiments, as Figures 1 to 3 shown:

[0019] Embodiment 1: A raw material grinding device for producing a base fluid loss reducer, including an outer shell 1. A fixing block 2 is arranged inside the outer shell 1. A conical groove 3 is opened at the lower end of the fixing block 2. A grinding lining plate is installed in the conical groove 3. A feed pipe 4 communicating with the conical groove 3 is arranged at the upper end of the fixing block 2. Raw materials are put into the fixing block 2 from the feed pipe 4. A grinding cone 5 is rotatably arranged at the bottom end inside the outer shell 1. The grinding cone 5 is inserted into the conical groove 3.

[0020] A driving mechanism 6 connected to the grinding cone 5 is provided at the lower end of the outer shell 1. The driving mechanism 6 drives the grinding cone 5 to rotate, and the raw materials are ground by the grinding cone 5 and the conical groove 3. The ground powder slides down along the gap between the grinding cone 5 and the conical groove 3. A cavity 15 is formed inside the fixing block 2, and a coolant is filled in the cavity 15. Liquid outlet hoses 16 and liquid inlet hoses 17 are respectively arranged at the upper and lower ends of the cavity 15. A coolant conveying mechanism 18 connected to both the liquid outlet hose 16 and the liquid inlet hose 17 is arranged outside the outer shell 1.

[0021] The coolant conveying mechanism 18 conveys the low-temperature coolant into the cavity 15 inside the fixing block 2, and the coolant circulates between the cavity 15 and the coolant conveying mechanism 18 to cool down the high temperature generated by the friction between the grinding cone 5 and the fixing block 2.

[0022] Embodiment 2: A raw material grinding device for producing base filtrate loss reducers, including an outer shell 1. A fixing block 2 is arranged inside the outer shell 1. A conical groove 3 is formed at the lower end of the fixing block 2, and a grinding lining plate is installed in the conical groove 3. A feed pipe 4 communicating with the conical groove 3 is arranged at the upper end of the fixing block 2. The raw materials are put into the fixing block 2 from the feed pipe 4. A grinding cone 5 is rotatably arranged at the bottom end inside the outer shell 1, and the grinding cone 5 is inserted into the conical groove 3.

[0023] A driving mechanism 6 connected to the grinding cone 5 is provided at the lower end of the outer shell 1. The driving mechanism 6 drives the grinding cone 5 to rotate, and the raw materials are ground by the grinding cone 5 and the conical groove 3. The ground powder slides down along the gap between the grinding cone 5 and the conical groove 3. An annular groove 7 is arranged on the lower end surface of the outer shell 1, and a plurality of discharge valves 8 are arranged at the lower end of the annular groove 7.

[0024] An end cover 9 is provided at the upper end inside the outer shell 1. A high-precision telescopic mechanism 10 connected to the fixing block 2 is vertically arranged at the lower end of the end cover 9. The high-precision telescopic mechanism 10 controls the lifting of the fixing block 2 to adjust the gap between the conical groove 3 and the grinding cone 5, so as to adjust the particle size of the ground powder.

[0025] A baffle 11 is arranged on the side of the fixing block 2. A sealing ring 12 connected to the inner wall of the outer shell 1 is arranged outside the baffle 11. The end cover 9 is provided with a feed funnel 13. The lower end of the feed funnel 13 is connected with a telescopic pipe 14, and the lower end of the telescopic pipe 14 is connected with the feed pipe 4. The telescopic pipe 14, the baffle 11 and the sealing ring 12 prevent dust from affecting the high-precision telescopic mechanism 10.

[0026] A cavity 15 is formed inside the fixed block 2, and a coolant is poured into the cavity 15. An outlet hose 16 and an inlet hose 17 are respectively arranged at the upper and lower ends of the cavity 15. A coolant conveying mechanism 18 connected to both the outlet hose 16 and the inlet hose 17 is arranged outside the housing 1. The coolant conveying mechanism 18 includes a coolant tank provided with a refrigeration mechanism. A delivery pump is arranged inside the coolant tank. The delivery pump includes an output pipe connected to the inlet hose 17, and the outlet hose 16 is connected to the coolant tank.

[0027] The specific working process is as follows: When grinding powder, the height of the fixed block 2 is adjusted by the telescopic adjustment of the high-precision telescopic mechanism 10, thereby adjusting the particle size of the powder. The raw material is put into the feed pipe 4 along the telescopic pipe 14 from the feed hopper 13. The grinding cone 5 and the conical groove 3 grind the raw material. The ground powder slides down along the gap between the grinding cone 5 and the conical groove 3. At the same time, the coolant conveying mechanism 18 conveys the low-temperature coolant into the cavity 15 inside the fixed block 2, and the coolant circulates between the cavity 15 and the coolant conveying mechanism 18 to cool down the high temperature generated by the friction between the grinding cone 5 and the fixed block 2.

[0028] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A raw material grinding device for producing a base fluid loss agent, characterized in that: The invention comprises an outer shell, a fixed block is arranged inside the outer shell, a conical groove is arranged at the lower end of the fixed block, a feed pipe connected with the conical groove is arranged at the upper end of the fixed block, a grinding cone is rotatably arranged at the bottom end of the inner part of the outer shell, the grinding cone is inserted into the conical groove, a cavity is arranged inside the inner part of the fixed block, a coolant is poured into the cavity, a liquid outlet hose and a liquid inlet hose are arranged at the upper and lower ends of the cavity respectively, and a coolant conveying mechanism connected with both the liquid outlet hose and the liquid inlet hose is arranged outside the outer shell.

2. A raw material grinding device for producing a base fluid loss agent as claimed in claim 1, characterized in that: The upper end cover inside the shell is provided with an end cover, and the lower end of the end cover is vertically provided with a high-precision telescopic mechanism connected with a fixed block.

3. A raw material grinding device for producing a base fluid loss agent as claimed in claim 2, characterized in that: A baffle is arranged on the side of the fixing block, and a sealing ring connected with the inner wall of the shell is arranged on the outer side of the baffle.

4. A raw material grinding device for producing a base fluid loss agent as claimed in claim 2, characterized in that: The end cover is provided with a feeding funnel, the lower end of the feeding funnel is connected with a telescopic tube, and the lower end of the telescopic tube is connected with the feeding pipe.

5. A raw material grinding device for producing a base fluid loss agent as claimed in claim 1, characterized in that: The coolant delivery mechanism comprises a coolant tank, the coolant tank is provided with a refrigeration mechanism, a delivery pump is provided in the coolant tank, the delivery pump comprises an output pipe, the output pipe is connected with a liquid inlet hose, and the liquid outlet hose is connected with the coolant tank.

6. A raw material grinding device for producing a base fluid loss agent as claimed in claim 1, characterized in that: The lower end surface of the shell is provided with an annular groove, and the lower end of the annular groove is provided with a plurality of discharge valves.

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