Mixing equipment for delayed cross-linking agent production

Abstract

The mixing equipment for delayed cross-linking agent production comprises a tank body and a stirring device arranged in the tank body, the side wall of the tank body is provided with a first feeding hole for feeding a liquid agent, the top of the tank body is also provided with a plurality of second feeding holes for feeding powdery materials, and the stirring device is arranged in the tank body. The plurality of second feed ports are uniformly arranged around the main shaft in the stirring device; a group of platforms located above the first feeding port are arranged in the tank body, a plurality of screening holes in one-to-one correspondence with the multiple second feeding ports are formed in the platforms, a group of screening trays are arranged in each group of screening holes in a sliding manner, and the sliding direction of each group of screening trays is the radial direction of the main shaft; the two ends, in the sliding direction, of the screening trays are connected with the screening holes through elastic assemblies respectively, each set of screening trays is further provided with a stress component pointing to the main shaft, and the main shaft is provided with a set of cams making contact with the stress components and used for screening materials in the screening trays in a vibrating mode. The mixing equipment disclosed by the utility model can be used for preventing powdery materials from caking and improving the quality of the delayed cross-linking agent.

Description

Technical Field

[0001] The utility model relates to the field of oil drilling auxiliary agent production equipment, in particular to a mixing device for producing a delayed cross-linking agent. Background Art

[0002] Delayed crosslinking agents are mainly used in water-based fracturing fluids in oil drilling. Their function is to delay crosslinking time and improve temperature resistance and heat and shear resistance. Common delayed crosslinking agents are mainly divided into organic acid delayed crosslinking agents, inorganic acid delayed crosslinking agents and organometallic compound delayed crosslinking agents. When making the above-mentioned delayed crosslinking agents, solid materials such as zirconium oxychloride, organic titanium, organic zirconium and some metal acid salts are usually stirred and mixed with various organic or inorganic liquid solvents.

[0003] For some solvents with higher viscosity, when adding the above-mentioned various powdered solid materials, if the powdered materials are poured into the liquid solvent in a concentrated manner, due to the poor fluidity of the solvent, it will be difficult to fully mix the solvent and the powdered materials, and even some materials will be wrapped in the solvent in clumps, which will not only increase the stirring and mixing time, but also affect the quality of the delayed crosslinking agent. Utility Model Content

[0004] The purpose of the present invention is to overcome the shortcomings of the background technology and provide a mixing device for the production of delayed crosslinking agents that can disperse various solid materials into a liquid solvent, so as to improve the mixing efficiency of the solid material and the liquid agent, and enhance the production quality of the delayed crosslinking agent.

[0005] The embodiments of the present invention are achieved through the following technical solutions:

[0006] A mixing device for producing a delayed crosslinking agent comprises a tank body and a stirring device disposed within the tank body. A first feed port for introducing a liquid agent is provided on a side wall of the tank body. A plurality of second feed ports for introducing a powdered material are further provided on the top of the tank body. The plurality of second feed ports are evenly arranged around a main shaft within the stirring device.

[0007] A group of platforms located above the first feed port are provided in the tank body, and a plurality of screening holes corresponding to the plurality of second feed ports are provided on the platform. A group of sieve plates are slidably provided in each group of the screening holes, and the sliding direction of each group of the sieve plates is the radial direction of the main shaft; the two ends of the sieve plates in the sliding direction are connected to the screening holes through elastic components, and each group of sieve plates is also provided with a force-bearing component pointing to the main shaft, and the main shaft is provided with a group of cams in contact with the plurality of force-bearing components for vibrating and screening the material in the sieve plates.

[0008] Furthermore, a first cover barrel is provided on the screening hole, and a second cover barrel is provided on the sieve plate and is inserted into the first cover barrel; in the sliding direction of the sieve plate, a plurality of pins inserted into the first cover barrel are respectively provided at both ends of the second cover barrel; the elastic component includes a spring sleeved on the plurality of pins, and the two ends of each group of the springs rest between the inner wall of the first cover barrel and the outer wall of the second cover barrel; the pin close to the main shaft side passes through the side wall of the first cover barrel and is connected to the force-bearing component.

[0009] Furthermore, each group of the first cover tubes is further provided with a group of material guide tubes, the upper ends of the material guide tubes extend into the second feed port, and the lower ends of the material guide tubes are closed and inserted into the second cover tubes.

[0010] Furthermore, a set of vertical shafts is provided in the middle of the sieve plate, and a plug is provided at the upper end of the vertical shaft to close the closing; the plug matches the contour of the closing; when the sieve plate slides, the plug is staggered with the closing to leak material downward.

[0011] Furthermore, the cam is provided with a plurality of guide rods extending to below any of the screening holes, and the ends of the guide rods are provided with brushes that contact the bottom of the sieve plate for scraping the sieve plate.

[0012] Furthermore, a convex ring located above the first feed port is provided on the inner wall of the tank body, the platform is supported on the convex ring, and the convex ring is connected to the edge side of the platform through a plurality of bolts.

[0013] Furthermore, the circumferential outer wall of the lower end of the cam has a chamfer, so that the cam can be inserted between the plurality of force-bearing components from top to bottom.

[0014] Furthermore, a group of through holes is opened in the middle of the platform, the multiple screening holes are arranged around the through holes, and the inner diameter of the through holes is larger than the long axis diameter of the cam.

[0015] The technical solution of the embodiment of the utility model has at least the following advantages and beneficial effects:

[0016] In the mixing equipment for the production of delayed cross-linking agents of the present invention, multiple second feed ports for introducing powdered materials are arranged on the top of the tank body, so that different powdered materials can be conveniently introduced into the tank at the same time; in addition, under the action of the cam on the main shaft of the stirring device, the sieve plate in the screening hole on the platform can vibrate and screen the powdered materials introduced by the second feed port. While stirring, the powdered materials can be evenly dispersed into the liquid below, avoiding agglomeration of the powdered materials, reducing the stirring time during the mixing process, and improving the quality of the delayed cross-linking agent. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic structural diagram of a mixing device for producing a delayed crosslinking agent according to the present invention;

[0018] Figure 2 Schematic diagram of the assembly relationship between the platform, sieve plate and cam in the embodiment of the utility model Figure 1 ;

[0019] Figure 3 Schematic diagram of the assembly relationship between the platform, sieve plate and cam in the embodiment of the utility model Figure 2 ;

[0020] Figure 4 This is a schematic diagram of the assembly relationship between the first cover cylinder, the second cover cylinder and the material guide cylinder in the embodiment of the present utility model;

[0021] Icons: 1-tank body, 10-top cover, 11-cone, 12-convex ring, 120-bolt, 13-first feed port, 14-second feed port, 2-stirring device, 20-main shaft, 21-motor, 3-platform, 30-screening hole, 31-first cover cylinder, 32-sieve plate, 33-second cover cylinder, 34-latch, 340-spring, 35-plug, 350-vertical axis, 36-material guide cylinder, 360-closing mouth, 37-force-bearing component, 4-cam, 40-chamfer, 41-brush, 410-guide rod. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0023] Reference Figures 1 to 4 The utility model provides a mixing device for producing a delayed crosslinking agent, comprising a tank body 1 and a stirring device 2.

[0024] Among them, the upper end of the tank body 1 is a detachable top cover 10, which is locked to the tank body 1 by bolts. The stirring device 2 includes a main shaft 20 and a motor 21 placed on the top cover 10. The upper end of the main shaft 20 is driven by a gearbox arranged at the output end of the motor 21. The lower end of the main shaft 20 extends into the tank body 1 and is provided with stirring blades to facilitate mixing of the materials in the tank body 1.

[0025] Reference Figure 1A first feed port 13 is provided on the side wall of the tank body 1, and the first feed port 13 is used to introduce a liquid for producing a delayed cross-linking agent into the tank body 1. A plurality of second feed ports 14 are also provided on the top cover 10 of the tank body 1, and the plurality of second feed ports 14 are evenly arranged around the main shaft 20 in the stirring device 2, so that the powdered material can be evenly sprinkled into the liquid below along the plurality of second feed ports 14.

[0026] Generally, since the liquid of the delayed cross-linking agent has a certain viscosity, if the powdered material is poured into the liquid below in a concentrated manner, some of the powdered material will exist in the liquid in the form of clumps. In order to solve the above problem, a convex ring 12 located above the first feed port 13 is provided on the inner wall of the tank body 1, and a group of disc-shaped platforms 3 are set on the convex ring 12, that is, the platform 3 is supported on the convex ring 12, and the convex ring 12 and the edge side of the platform 3 are locked and fixed by a number of bolts 120.

[0027] Among them, the platform 3 is provided with a plurality of screening holes 30 corresponding to the plurality of second feed ports 14 one by one. Figure 2 and Figure 3 In this embodiment, six groups of second feed ports 14 are provided on the top cover 10. Therefore, six groups of screening holes 30 are correspondingly provided on the platform 3. Each of the six groups of screening holes 30 corresponds to a group of second feed ports 14 up and down. A group of sieve plates 32 are slidably provided in each group of screening holes 30, and the sliding direction of the sieve plates 32 is the radial direction of the main shaft 20. In addition, the two ends of the sieve plates 32 in the sliding direction are connected to the screening holes 30 through elastic components. The function of the elastic component is to keep the sieve plates 32 itself in the center of the screening holes 30 through the elastic members at both ends of the sliding direction when the sieve plates 32 are not driven by external force. Figure 2 Each set of sieve plates 32 is also provided with a force-bearing component 37 pointing to the main shaft 20, wherein the main shaft 20 is provided with a group of cams 4 in contact with several force-bearing components 37. When stirring the liquid, under the drive of the main shaft 20, the cams 4 reciprocatingly vibrate and hit the six groups of force-bearing components 37 on the peripheral side, causing the six groups of sieve plates 32 to reciprocate in the radial direction and vibrate in turn, and the powdered material on the lower sieve plate 32 introduced from the second feed port 14 is sieved and evenly sprinkled into the liquid below.

[0028] In order to better realize the introduction and screening of powdered materials, in a preferred embodiment, referring to Figure 4The sieve hole 30 is provided with a first cover cylinder 31, and the sieve plate 32 is provided with a second cover cylinder 33 which is inserted into the first cover cylinder 31; in the sliding direction of the sieve plate 32, two or more latches 34 are provided at each end of the second cover cylinder 33 and inserted into the first cover cylinder 31, so that the second cover cylinder 33 and the sieve plate 32 can reciprocate in a small range along the axial direction of the latch 34; therefore, the aforementioned elastic component may include a spring 340 sleeved on the above-mentioned latch 34, and the two ends of each group of springs 340 abut between the inner wall of the first cover cylinder 31 and the outer wall of the second cover cylinder 33. The springs 340 at both ends of the second cover cylinder 33 keep the second cover cylinder 33 in the middle position of the first cover cylinder 31, wherein the latch 34 close to the main shaft 20 side passes through the side wall of the first cover cylinder 31 and is connected to the force-bearing component 37.

[0029] In addition, each group of first cover cylinders 31 is also provided with a group of guide cylinders 36. The upper end of the guide cylinder 36 extends into the second feed port 14, and the lower end of the guide cylinder 36 is closed and inserted into the second cover cylinder 33. When the powdered material is introduced into the second feed port 14, due to the setting of the guide cylinder 36, the powdered material can be more accurately introduced into the sieve plate 32 below.

[0030] In addition, in a more preferred embodiment, a set of vertical shafts 350 can be set in the middle of the sieve plate 32, and the upper end of the vertical shaft 350 is provided with a plug 35 for closing the opening 360. The plug 35 matches the contour of the opening 360. When the sieve plate 32 is vibrated and slides by the cam 4, the plug 35 and the opening 360 are staggered to leak material downward; therefore, when there is a lot of powdery material, the material guide barrel 36 can play the role of storing material. By intermittently leaking material, a large amount of powdery material does not have to be accumulated on the sieve plate 32 below, so that the powdery material on the sieve plate 32 can be evenly sprinkled into the liquid below.

[0031] In addition, in order to improve the working efficiency of the six sets of sieve trays 32, refer to Figure 1 and Figure 3 The cam 4 is also provided with a plurality of guide rods 410 extending to the bottom of any screening hole 30. The end of the guide rod 410 is provided with a brush 41 in contact with the bottom of the sieve plate 32. When the cam 4 rotates, the brush 41 can scrape the bottom of the sieve plate 32 to promote material leakage.

[0032] In order to facilitate the installation of the cam 4 between the six groups of force-bearing components 37, a chamfer 40 is provided on the circumferential outer wall of the lower end of the cam 4 so that the cam 4 can be inserted between the six groups of force-bearing components 37 from top to bottom; Figure 3 A group of through holes is opened in the middle of the platform 3, and six groups of screening holes 30 are arranged around the through holes. The inner diameter of the through holes is larger than the long axis diameter of the cam 4, which can facilitate the assembly of the brush 41 and the guide rod 410 to the lower end of the cam 4.

[0033] The working process of the mixing equipment for producing delayed crosslinking agent of the utility model is as follows:

[0034] First, various liquids are introduced into the tank body 1 through the first feed port 13 and initially mixed by stirring of the stirring device 2;

[0035] Then, when the stirring device 2 is stopped, various powdered materials are placed into one or more material guide barrels 36 along the second feed inlet 14;

[0036] The stirring device 2 is started again. Driven by the main shaft 20, the cam 4 vibrates the sieve plate 32 on the peripheral side, so that the powdered material is sieved and evenly sprinkled into the liquid below. Under the action of the stirring device 2, the liquid and the powdered material are evenly mixed to form a delayed crosslinking agent.

[0037] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A mixing device for producing a delayed crosslinking agent, comprising a tank body and a stirring device arranged in the tank body, wherein a first feed port for introducing a liquid agent is provided on the side wall of the tank body, characterized in that: The top of the tank body is also provided with a plurality of second feed ports for introducing powdered materials, and the plurality of second feed ports are evenly arranged around the main shaft in the stirring device; A group of platforms located above the first feed port are provided in the tank body, and a plurality of screening holes corresponding to the plurality of second feed ports are provided on the platform. A group of sieve plates are slidably provided in each group of the screening holes, and the sliding direction of each group of the sieve plates is the radial direction of the main shaft; the two ends of the sieve plates in the sliding direction are connected to the screening holes through elastic components, and each group of sieve plates is also provided with a force-bearing component pointing to the main shaft, and the main shaft is provided with a group of cams in contact with the plurality of force-bearing components for vibrating and screening the material in the sieve plates.

2. The mixing equipment for producing a delayed crosslinking agent according to claim 1, characterized in that: A first cover cylinder is provided on the screening hole, and a second cover cylinder is provided on the sieve plate and is inserted into the first cover cylinder; in the sliding direction of the sieve plate, a plurality of latches inserted into the first cover cylinder are provided at each end of the second cover cylinder; the elastic component includes a spring sleeved on the plurality of latches, and the two ends of each group of the springs rest between the inner wall of the first cover cylinder and the outer wall of the second cover cylinder; the latch close to the main shaft side passes through the side wall of the first cover cylinder and is connected to the force-bearing component.

3. The mixing equipment for producing a delayed crosslinking agent according to claim 2, characterized in that: Each group of the first cover tubes is further provided with a group of material guide tubes, the upper ends of the material guide tubes extend into the second feed port, and the lower ends of the material guide tubes are closed and inserted into the second cover tubes.

4. The mixing equipment for producing a delayed crosslinking agent according to claim 3, characterized in that: A set of vertical shafts is provided in the middle of the sieve plate, and a plug is provided at the upper end of the vertical shaft for closing the closing; the plug matches the contour of the closing; when the sieve plate slides, the plug is staggered with the closing to leak material downward.

5. The mixing equipment for producing a delayed crosslinking agent according to any one of claims 1 to 4, characterized in that: The cam is further provided with a plurality of guide rods extending to below any of the screening holes, and the ends of the guide rods are provided with brushes in contact with the bottom of the sieve plate for scraping the sieve plate.

6. The mixing equipment for producing a delayed crosslinking agent according to claim 1, characterized in that: A convex ring is provided on the inner wall of the tank body and is located above the first feed port. The platform is supported on the convex ring, and the convex ring is connected to the edge side of the platform through a plurality of bolts.

7. The mixing equipment for producing a delayed crosslinking agent according to claim 6, characterized in that: The circumferential outer wall of the lower end of the cam has a chamfer, so that the cam can be inserted between the plurality of force-bearing components from top to bottom.

8. The mixing equipment for producing a delayed crosslinking agent according to claim 7, characterized in that: A group of through holes is opened in the middle of the platform, the multiple screening holes are arranged around the through holes, and the inner diameter of the through holes is larger than the long axis diameter of the cam.

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