A controllable mixing device for clean fracturing fluid

Abstract

The present invention relates to the field of petroleum engineering technology, and in particular to a controllable mixing device for clean fracturing fluid, comprising a rotating shaft, two support plates, a plurality of cutting assemblies, a plurality of rotating parts and a plurality of locking assemblies, wherein one end of the two support plates is respectively connected to the rotating shaft, the two support plates are on the same side of the rotating shaft, and a spacing is provided between the two support plates, the two support plates extend along a first direction, each cutting assembly can be slidably arranged on the two support plates along the first direction away from the rotating shaft, a first spring is provided between two adjacent cutting assemblies, the rotating parts and the locking assemblies are alternately arranged on the corresponding cutting assemblies, and the movement of the cutting assemblies is controlled according to the influence of the agglomerated materials in the cylinder on the rotation speed of the rotating parts. The moving cutting assembly drives the adjacent cutting assemblies to move synchronously through the first spring, and as it moves, the first spring will be gradually compressed, the distance between the two adjacent cutting assemblies will be shortened, and smaller agglomerated materials can be crushed.

Description

Technical Field

[0001] The invention relates to the technical field of petroleum engineering, and in particular to a controllable mixing device for clean fracturing fluid. Background Art

[0002] Fracturing fluid is a chemical system formed by mixing a variety of additives in a certain ratio, and is used for fracturing and transformation of oil and gas layers. Currently, the common fracturing fluid mixing operation is carried out in a mixing station, which is prepared using a special mixer. The basic structure of the mixer can be summarized as a raw material component for adding raw materials to the mixer, and a mixing component for mixing the raw materials added to the mixer. The conventionally used mixing component is mostly a paddle agitator, that is, it is set in a mixing tank. After the raw materials are added to the mixing tank, the paddle agitator is used to stir them until they are uniform. Compared with other mixing methods, stirring and mixing has the advantages of large processing capacity and uniform mixing. It can be applied to the mixing operations of various types of fracturing fluids and has a wide range of applications.

[0003] However, an important type of raw materials in fracturing fluid is powdered preparations in the form of solid particles. Due to their surface characteristics, chemical composition and other aspects, solid particles often have very different solubility and dispersion properties, and the dispersion effects during the preparation process are also different. In addition, solid particle powdered preparations are prone to agglomeration after mixing with liquid solvents, which reduces the mixing effect of the powdered preparation and the liquid, resulting in uneven mixing of the fracturing fluid and substandard quality. Summary of the invention

[0004] Based on this, it is necessary to provide a controllable mixing device for clean fracturing fluid to address the problems of internal agglomeration and poor mixing effect during the current fracturing fluid manufacturing process.

[0005] The above purpose is achieved through the following technical solutions:

[0006] A controllable mixing device for clean fracturing fluid, comprising

[0007] A cylinder, a rotating shaft and a stirring mechanism, wherein the cylinder is fixedly arranged, the rotating shaft is vertically arranged in the cylinder, and the rotating shaft is rotatably connected to the cylinder around its own axis, the stirring mechanism comprises a support plate, a cutting assembly, an adjusting assembly, a guide plate and a locking assembly, two support plates are provided, one end of the two support plates is respectively connected to the rotating shaft, the two support plates are on the same side of the rotating shaft, and a spacing is provided between the two support plates, the two support plates extend along a first direction, and the first direction is a horizontal direction; a plurality of cutting assemblies are provided, each cutting assembly can be slidably arranged on the two support plates along the first direction away from the rotating shaft, and a plurality of cutting assemblies are arranged in sequence along the first direction, and a first spring is provided between two adjacent cutting assemblies for cutting the material blocked in the cylinder when the rotating shaft rotates.

[0008] There are multiple adjustment components, and the multiple adjustment components are slidably arranged on a support plate along a first direction. Each adjustment component includes a mounting cylinder, a rotating part and a friction ring. Each mounting cylinder is correspondingly arranged on a cutting component, and the multiple mounting cylinders are arranged at intervals on the multiple cutting components. The axis of the mounting cylinder extends in the horizontal direction and is perpendicular to the sliding direction of the cutting component. The rotating part is rotatably arranged in the mounting cylinder around the rotating axis of the mounting cylinder, and is used to crush the agglomerated materials entering the mounting cylinder and provide corresponding rotational force according to the resistance generated when crushing the agglomerated materials; the friction ring is fixedly installed on the rotating part, and the friction ring is coaxial with the mounting cylinder, the guide plate is fixedly installed on the inner wall of the cylinder, and the guide plate extends along the first direction, and the friction ring can be rollingly connected with the guide plate; there are multiple locking components, each locking component is arranged on the cutting component between two adjacent mounting cylinders, and each locking component is connected to two adjacent rotating parts, and is used to limit the corresponding cutting component according to the rotational force generated by the two adjacent rotating parts.

[0009] Preferably, the rotating part includes a rotating rod, a crushing cone and an impeller. The rotating rod is rotatably arranged on the mounting tube, and the rotating rod is coaxial with the mounting tube. The crushing cone is sleeved on the rotating rod, and the crushing cone is fixedly connected to the rotating rod. The crushing cone is arranged in the mounting tube, and a gap is provided between the large end of the crushing cone and the inner wall of the mounting tube. In the rotation direction of the rotating shaft, the small end of the crushing cone is located in front of its large end. The impeller is sleeved on the rotating rod, and the impeller is fixedly connected to the rotating rod. The impeller is arranged in the mounting tube, and the impeller is located in front of the crushing cone. The diameter of the impeller is matched with the diameter of the inner wall of the mounting tube. The friction ring is fixedly connected to the rotating rod, and the friction ring is coaxial with the rotating rod.

[0010] Preferably, a plurality of arc grooves are provided on the circumferential surface of the crushing cone, and each arc groove extends from the small end to the large end of the crushing cone.

[0011] Preferably, a through groove is provided on the support plate, and the cutting assembly includes a slider, a longitudinal wire and a clamping portion. There are multiple sliders, two sliders form a group, and each group of sliders is slidably arranged in the through groove of a support plate along a first direction. Each mounting tube is installed on one of two adjacent sliders on the same support plate. The number of longitudinal wires is consistent with the number of slider groups, and the two ends of each longitudinal wire are slidably connected to the two sliders in the same group. There are multiple first springs, and each first spring is located between two adjacent sliders on a support plate. The clamping portion is used to prevent the slider from moving in a direction close to the rotating shaft.

[0012] Preferably, a connecting plate is fixedly installed on one end of the two support plates away from the rotating shaft, and a plurality of transverse wires extending in the radial direction of the rotating shaft are arranged on one side of the connecting plate close to the rotating shaft. The other end of the transverse wires is connected to the rotating shaft. The plurality of transverse wires are evenly arranged on the connecting plate, and the transverse wires are slidably connected to the longitudinal wires.

[0013] Preferably, a side door is provided on the cylinder body, the height of the side door is greater than the length of the connecting plate in the vertical direction, and the upper and lower ends of the connecting plate are located within the height range of the side door.

[0014] Preferably, each locking assembly includes a slide plate and two driving parts, a slide groove is provided on the surface of the slide plate, the slide plate is slidably arranged in the slide groove along the axial direction of the rotating rod, the slide plate connected to the mounting tube and the slide plate slidably connected to the slide plate are slidably arranged on the same support plate, two friction plates are arranged on a surface of the slide plate close to the support plate, and the two friction plates are located on both sides of the support plate, the two driving parts are respectively arranged on two rotating rods adjacent to the slide plate, and are both arranged outside the mounting tube, the two driving parts are located at one end of the two mounting tubes away from each other, and the two driving parts are used to drive the slide plate to move in the slide groove along the axial direction of the rotating rod.

[0015] Preferably, each driving part comprises a fixed ring, a sliding sleeve, a telescopic rod and a fourth spring, the fixed ring is sleeved on the rotating rod, and the fixed ring is fixedly connected to the rotating rod, the sliding sleeve is sleeved on a rotating rod adjacent to the sliding block, and the sliding sleeve is slidably connected to the rotating rod; one end of the telescopic rod is rotatably connected to the sliding sleeve around the axis of the rotating rod, and the other end of the telescopic rod is rotatably connected to the sliding plate, and the rotation axis of the telescopic rod rotatably connected to the sliding plate is parallel to the rotation axis of the rotating rod; the fourth spring is sleeved on the rotating rod, and the fourth spring is located on the side of the sliding sleeve away from the fixed ring, and the two ends of the fourth spring are respectively connected to the rotating rod and the sliding sleeve, a plurality of evenly distributed push rods are provided on the circumferential surface of the fixed ring, each push rod is slidably provided in the fixed ring along the radial direction of the fixed ring, a hemispherical groove is provided at one end of the sliding sleeve close to the fixed ring, the center of the hemispherical groove is located on the rotating shaft of the rotating rod, and each push rod is slidably connected to the hemispherical groove; the two driving parts on each rotating rod are symmetrically arranged, and the telescopic rods in the two driving parts are rotatably connected to the two sliding plates adjacent to the rotating rod.

[0016] Preferably, two groups of adjusting components and locking components are provided, each group of adjusting components and locking components is correspondingly arranged on a support plate, two guide plates are provided, each guide plate corresponds to a friction ring in a group of adjusting components, and the rotation of the impellers in the two groups of adjusting components can drive the corresponding friction rings to move on the corresponding guide plates in a direction away from the rotating shaft, and the rotating parts in the two groups of adjusting components are rotationally symmetrical about their horizontal midlines.

[0017] Preferably, multiple longitudinal wires are arranged at an incline relative to the horizontal plane, and the vertical distances from both ends of each longitudinal wire to the rotating shaft are consistent. In the rotation direction of the rotating shaft, the longitudinal wire is provided with a front end and a rear end, the crushing cone is located at the front end of a group of adjusting components on the front side of the corresponding impeller, and the crushing cone is located at the rear end of the longitudinal wire in a group of adjusting components on the rear side of the corresponding impeller.

[0018] The beneficial effects of the present invention are as follows: a plurality of cutting assemblies are provided, and when the rotating shaft rotates, the agglomerated materials that are contacted can be crushed; through the cooperation of the rotating part and the friction ring, when the friction ring contacts the guide plate, the rotating rotating part drives the cutting assembly to move on the support plate in the direction away from the rotating shaft through the guide plate; the moving cutting assembly drives the adjacent cutting assemblies to move synchronously through the first spring, and as the movement progresses, the first spring will gradually be compressed, and the distance between the two adjacent cutting assemblies will be shortened, so that smaller agglomerated materials can be crushed; a locking assembly is provided, and when the passing rates of agglomerated materials in the two adjacent mounting cylinders on both sides of the locking assembly differ greatly and the resistance generated to the rotating part is inconsistent, the locking assembly fixes the corresponding cutting assembly, and relatively, the movement of the two cutting assemblies adjacent to the cutting assembly is resisted, and the moving distance of each moving cutting assembly is small, so that the crushing time of the cutting assembly for materials within the size range is increased, thereby avoiding the reduction of the crushing ability for larger agglomerated materials due to the small distance between the two adjacent cutting assemblies. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a controllable mixing device for clean fracturing fluid provided in an embodiment of the present invention;

[0020] Figure 2 A schematic structural diagram of a stirring mechanism of a controllable mixing device for clean fracturing fluid provided in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 The enlarged view of point A in the middle;

[0022] Figure 4 A front view of a stirring mechanism of a controllable mixing device for clean fracturing fluid provided in an embodiment of the present invention;

[0023] Figure 5 for Figure 4 Cross-sectional view along the BB direction;

[0024] Figure 6 for Figure 5 Enlarged view of point C in the middle;

[0025] Figure 7 for Figure 5 The enlarged view of point D in the middle;

[0026] Figure 8 A split diagram of a rotating portion of a controllable mixing device for clean fracturing fluid provided in an embodiment of the present invention.

[0027] Wherein: 100, cylinder; 101, rotating shaft; 102, motor; 110, support plate; 111, guide plate; 112, connecting plate; 113, through groove; 114, horizontal wire; 120, mounting cylinder; 121, friction ring; 122, rotating rod; 123, crushing cone; 124, impeller; 125, arc groove; 130, slider; 131, longitudinal wire; 132, protrusion; 133, first spring; 134, clamping plate; 135, clamping block; 136, locking block; 137, clamping groove; 140, slide plate; 141, slide groove; 142, friction plate; 143, fixing ring; 144, sliding sleeve; 145, telescopic rod; 146, fourth spring; 147, hemispherical groove; 148, push rod; 149, receiving groove; 150, pull plate; 151, sixth spring. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0031] like Figures 1 to 8As shown, a controllable mixing device for clean fracturing fluid provided by an embodiment of the present invention comprises a barrel 100, a rotating shaft 101 and a stirring mechanism, wherein the barrel 100 is fixedly arranged, a motor 102 is arranged outside the barrel 100, the rotating shaft 101 is vertically arranged in the barrel 100, one end of the rotating shaft 101 passes through the barrel 100, and the rotating shaft 101 is rotatably connected with the barrel 100 around its own axis, the output shaft of the motor 102 is connected to one end of the rotating shaft 101 passing through the barrel 100, the stirring mechanism comprises a support plate 110, a cutting assembly, an adjusting assembly, a guide plate 111 and a locking assembly, and the support plate 110 is provided There are two, one end of the two support plates 110 is respectively connected to the rotating shaft 101, the two support plates 110 are on the same side of the rotating shaft 101, and a spacing is provided between the two support plates 110, the two support plates 110 extend along a first direction, and the first direction is a horizontal direction; there are multiple cutting components, each cutting component can be slidably arranged on the two support plates 110 along the first direction away from the rotating shaft 101, and the multiple cutting components are arranged in sequence along the first direction, and a first spring 133 is provided between two adjacent cutting components for cutting the material blocked in the cylinder 100 when the rotating shaft 101 rotates.

[0032] There are multiple adjustment components, and the multiple adjustment components are slidably arranged on a support plate 110 along a first direction. Each adjustment component includes a mounting cylinder 120, a rotating part and a friction ring 121. Each mounting cylinder 120 is correspondingly arranged on a cutting component, and multiple mounting cylinders 120 are arranged at intervals on multiple cutting components. The axis of the mounting cylinder 120 extends in the horizontal direction and is perpendicular to the sliding direction of the cutting component. The rotating part is rotatably arranged in the mounting cylinder 120 around the rotating axis of the mounting cylinder 120, and is used to crush the agglomerated materials entering the mounting cylinder 120 and crush the agglomerated materials according to the crushed agglomerated materials. The resistance generated when the rotation is performed provides a corresponding rotational force; the friction ring 121 is fixedly mounted on the rotating part, and the friction ring 121 is coaxial with the mounting cylinder 120, the guide plate 111 is fixedly mounted on the inner wall of the cylinder 100, and the guide plate 111 extends along the first direction, and the friction ring 121 can be rollingly connected with the guide plate 111; there are multiple locking assemblies, each locking assembly is arranged on the cutting assembly between two adjacent mounting cylinders 120, and each locking assembly is connected to two adjacent rotating parts, and is used to limit the corresponding cutting assembly according to the rotational force generated by the two adjacent rotating parts.

[0033] A plurality of cutting assemblies are provided, and when the rotating shaft 101 rotates, the agglomerated materials that come into contact therewith can be crushed. Through the cooperation between the rotating part and the friction ring 121, when the friction ring 121 contacts the guide plate 111, the rotating rotating part drives the cutting assembly to move on the support plate 110 in a direction away from the rotating shaft 101 through the guide plate 111, and the moving cutting assembly drives the adjacent cutting assembly to move synchronously through the first spring 133, and as the movement progresses, the first spring 133 is gradually compressed, and the distance between the two adjacent cutting assemblies is shortened, so that smaller agglomerated materials can be crushed. A locking assembly is provided, and when the passing rates of the agglomerated materials in the two adjacent mounting cylinders 120 located on both sides of the locking assembly differ greatly and the resistance generated to the rotating part is inconsistent, the locking assembly fixes the corresponding cutting assembly, and relatively, the movement of the two cutting assemblies adjacent to the cutting assembly is resisted, and the moving distance of each moving cutting assembly is short, so that the crushing time of the cutting assembly for the materials within the size range is increased, so as to avoid reducing the crushing ability of the larger agglomerated materials due to the small distance between the two adjacent cutting assemblies.

[0034] In this embodiment, the rotating part includes a rotating rod 122, a crushing cone 123 and an impeller 124. The rotating rod 122 is rotatably arranged on the mounting tube 120, and the rotating rod 122 is coaxial with the mounting tube 120. The crushing cone 123 is sleeved on the rotating rod 122, and the crushing cone 123 is fixedly connected to the rotating rod 122. The crushing cone 123 is arranged in the mounting tube 120, and a gap is provided between the large end of the crushing cone 123 and the inner wall of the mounting tube 120. In the rotation direction of the rotating shaft 101, the small end of the crushing cone 123 is located at the front side of its large end. The impeller 124 is sleeved on the rotating rod 122, and the impeller 124 is fixedly connected to the rotating rod 122. The impeller 124 is arranged in the mounting tube 120, and the impeller 124 is located in the mounting tube 120. On the front side of the crushing cone 123, the diameter of the impeller 124 is matched with the inner wall diameter of the mounting tube 120, the friction ring 121 is fixedly connected to the rotating rod 122, and the friction ring 121 is coaxial with the rotating rod 122. When the rotating shaft 101 rotates, the impeller 124 rotates under the impact of the flow of the liquid, and at the same time drives the crushing cone 123 to rotate. The rotating crushing cone 123 crushes the agglomerated materials entering the mounting tube 120 by cooperating with the inner wall of the mounting tube 120; on the contrary, in the direction of rotation, if the impeller 124 is located behind the crushing cone 123, the liquid flowing relative to the mounting tube 120 will hit the end face of the large end of the crushing cone 123, and the driving force generated by the impeller 124 is relatively small.

[0035] In this embodiment, a plurality of arc grooves 125 are provided on the circumferential surface of the crushing cone 123. Each arc groove 125 extends from the small end to the large end of the crushing cone 123. The arc grooves 125 make the circumferential surface of the crushing cone 123 rough, thereby making it easier to crush the agglomerated materials sliding over the circumferential surface of the crushing cone 123.

[0036] In this embodiment, a through slot 113 is provided on the support plate 110, and the cutting assembly includes a slider 130, a longitudinal wire 131 and a clamping portion. A plurality of sliders 130 are provided, and two sliders 130 form a group. Each group of sliders 130 is slidably arranged in the through slot 113 of a support plate 110 along a first direction, and each mounting tube 120 is installed on one of the two adjacent sliders 130 on the same support plate 110; the number of longitudinal wires 131 is consistent with the number of groups of sliders 130, and the two ends of each longitudinal wire 131 are slidably connected to the two sliders 130 in the same group, and the same group of sliders 130 is connected to the same group of sliders 130. A receiving groove 149 is provided on one side of the blocks 130 that are close to each other, and a pull plate 150 is slidably arranged in the receiving groove 149. The two ends of the longitudinal wire 131 are respectively fixedly connected to the two pull plates 150 in the same group of sliders 130. A sixth spring 151 is provided in the receiving groove 149. The pull plate 150 is located between the sixth spring 151 and the longitudinal wire 131, and the two ends of the sixth spring 151 are respectively fixedly connected to the slider 130 and the pull plate 150; there are multiple first springs 133, and each first spring 133 is located between two adjacent sliders 130 on a support plate 110.

[0037] The clamping part is used to prevent the slider 130 from moving in the direction close to the rotating shaft 101; there are two clamping parts, each of which includes a clamping plate 134, a clamping block 135 and a locking block 136, and the two clamping plates 134 are slidably arranged in the through groove 113 of a support plate 110, and the sliding direction of the two clamping plates 134 is perpendicular to the first direction, and the two clamping plates 134 are symmetrically arranged about the longitudinal wire 131, and the sides of the two clamping plates 134 close to each other are respectively provided with a plurality of clamping grooves 137, and the plurality of clamping grooves 137 are evenly arranged along the sliding direction of the slider 130, and each clamping groove 137 is away from One side of the rotating shaft 101 is an inclined surface, and the inclined surface gradually approaches the rotating shaft 101 from the side where the two clamping plates 134 are close to each other to the side where the two clamping plates 134 are away from each other; two installation grooves are provided at the end of the connecting plate 112, and the end of each clamping plate 134 away from the rotating shaft 101 is slidably set in one installation groove; there are two clamping blocks 135, each clamping block 135 is slidably set on the slider 130 along the sliding direction of the clamping plate 134, and a second spring is provided between the clamping block 135 and the slider 130, and each clamping block 135 is clamped with a clamping plate 134 through a clamping groove 137.

[0038] One end of the connecting plate 112 with the mounting groove is provided with a T-shaped groove, the depth of the T-shaped groove on the end surface of the connecting plate 112 is less than the depth of the mounting groove on the end surface of the connecting plate 112, and the T-shaped groove is located between the two mounting grooves, and a T-shaped block is provided on the locking block 136, and the T-shaped block is slidably connected to the T-shaped groove. Two protrusions 132 are provided on one surface of the locking block 136 with the T-shaped block, and the two protrusions 132 are respectively slidably arranged in the two mounting grooves, and the sides of the two protrusions 132 close to each other are both inclined surfaces, and the inclined surfaces on the two protrusions 132 gradually approach each other from the side of the protrusions 132 close to the card plate 134 to the side away from the card plate 134, and the sides of the two card plates 134 away from each other are also provided with inclined surfaces, and the two card plates 13 4 is gradually away from each other from the side close to the locking block 136 to the side away from the locking block 136, and the inclined surface of each protrusion 132 is slidably connected with the inclined surface on the corresponding clamping plate 134. A third spring is installed on the side of each clamping plate 134 away from the clamping groove 137, and one end of the third spring away from the clamping plate 134 is connected to the support plate 110. After the material and the liquid are mixed, the first spring 133 between the two adjacent sliders 130 is already in a compressed state. In order to facilitate the next use, the locking block 136 needs to be removed. At this time, the two clamping plates 134 are pulled away from each other by the third spring, and the clamping block 135 is no longer clamped with the clamping plate 134. The first spring 133 is restored to drive the slider 130 to reset.

[0039] In this embodiment, a connecting plate 112 is fixedly installed at one end of the two support plates 110 away from the rotating shaft 101. A plurality of transverse wires 114 extending in the radial direction of the rotating shaft 101 are provided on one side of the connecting plate 112 close to the rotating shaft 101. The other end of the transverse wire 114 is connected to the rotating shaft 101. The plurality of transverse wires 114 are evenly arranged on the connecting plate 112, and the transverse wires 114 are slidably connected to the longitudinal wires 131. The plurality of transverse wires 114 and the plurality of longitudinal wires 131 form a plurality of quadrilaterals. As the longitudinal wires 131 move, the area of ​​the quadrilaterals decreases, so that the agglomerated materials passing through the quadrilaterals can be better crushed.

[0040] In this embodiment, a side door is provided on the cylinder 100, the height of the side door is greater than the length of the connecting plate 112 in the vertical direction, and the upper and lower ends of the connecting plate 112 are located within the height range of the side door. When the liquid and the material are mixed and taken out, the side door needs to be opened, and the locking block 136 on the connecting plate 112 can be removed through the side door. At this time, the two clamping plates 134 on the same support plate 110 are separated from each other under the action of the third spring, and the clamping block 135 on the slider 130 is no longer clamped with the clamping plate 134. The slider 130 is reset under the action of the first spring 133, and the multiple longitudinal wires 131 are reset. A discharge pipe is provided at the bottom of the cylinder 100 for discharging the mixed liquid.

[0041] In this embodiment, each locking assembly includes a slide plate 140 and two driving parts. A slide groove 141 is provided on the surface of the slide block 130. The slide plate 140 is slidably arranged in the slide groove 141 along the axial direction of the rotating rod 122. The slide block 130 connected to the mounting cylinder 120 and the slide block 130 slidably connected to the slide plate 140 are slidably arranged on the same support plate 110. Two friction plates 142 are arranged on one surface of the slide plate 140 close to the support plate 110, and the two friction plates 142 are located on both sides of the support plate 110. The two driving parts are respectively arranged on the two rotating rods 122 adjacent to the slide plate 140, and both are arranged Outside the mounting tube 120, two driving parts are located at one end of the two mounting tubes 120 away from each other. The two driving parts are used to drive the slide plate 140 to move in the slide groove 141 along the axial direction of the rotating rod 122. When the slide plate 140 moves along the axial direction of the rotating rod 122, the two driving parts will drive one of the two friction plates 142 to approach the support plate 110, and the other friction plate 142 will move away from the support plate 110. After the friction plate 142 approaching the support plate 110 contacts the support plate 110, friction force will be generated between the friction plate 142 and the support plate 110, thereby suppressing the sliding of the slider 130 on the support plate 110.

[0042] In this embodiment, each driving part includes a fixed ring 143, a sliding sleeve 144, a telescopic rod 145 and a fourth spring 146. The fixed ring 143 is sleeved on the rotating rod 122, and the fixed ring 143 is fixedly connected to the rotating rod 122. The sliding sleeve 144 is provided on a rotating rod 122 adjacent to the slider 130, and the sliding sleeve 144 is slidably connected to the rotating rod 122; one end of the telescopic rod 145 is rotatably connected to the sliding sleeve 144 around the axis of the rotating rod 122, and the other end of the telescopic rod 145 is rotatably connected to the slide plate 140. The telescopic rod 145 rotatably connected to the slide plate 140 The rotation axis of 145 is parallel to the rotation axis of the rotating rod 122; the fourth spring 146 is sleeved on the rotating rod 122, and the fourth spring 146 is located on the side of the sliding sleeve 144 away from the fixed ring 143, and the two ends of the fourth spring 146 are respectively connected to the rotating rod 122 and the sliding sleeve 144. A plurality of evenly distributed push rods 148 are provided on the circumference of the fixed ring 143, and each push rod 148 is slidably arranged in the fixed ring 143 along the radial direction of the fixed ring 143. The end of the sliding sleeve 144 close to the fixed ring 143 is provided with a hemispherical groove 147, and the hemispherical groove 148 is provided with a hemispherical groove 148. The center of the rotating rod 122 is located on the rotating shaft of the rotating rod 122. Each push rod 148 is slidably connected with the hemispherical groove 147. A fifth spring is arranged between each push rod 148 and the fixing ring 143. When the rotating rod 122 is driven by the impeller 124 to rotate, the push rod 148 can generate a centrifugal force that overcomes the fifth spring. The push rod 148 pushes the sliding sleeve 144 to slide through the centrifugal force. The sliding sleeve 144 can drive the sliding plate 140 to move through the telescopic rod 145, so that one of the friction plates 142 is close to the support plate 110. The two driving parts on each rotating rod 122 are symmetrically arranged. , and the telescopic rods 145 in the two driving parts are rotatably connected to the two slides 140 adjacent to the rotating rod 122. When the rotation speeds of the impellers 124 in the two adjacent mounting cylinders 120 are basically the same, the pulling forces of the two driving parts acting on one slide 140 on the two mounting cylinders 120 are basically the same. After the slide 140 moves, one of the friction plates 142 contacts the support plate 110. At this time, the pressure between the friction plate 142 and the support plate 110 is relatively small, so the friction force generated is not enough to make the support plate 110 and the slider 130 relatively still.

[0043] In the present embodiment, two groups of adjusting components and locking components are provided, and each group of adjusting components and locking components is correspondingly arranged on a support plate 110, and two guide plates 111 are provided, and each guide plate 111 corresponds to a friction ring 121 in one group of adjusting components, and two sleeves are provided on the rotating shaft 101, and the sleeves are rotatably connected with the rotating shaft 101, and one end of each guide plate 111 away from the inner wall of the cylinder 100 is connected with a corresponding sleeve; the rotation of the impeller 124 in the two groups of adjusting components can drive the corresponding friction ring 121 to move on the corresponding guide plate 111 in the direction away from the rotating shaft 101, and the rotating parts in the two groups of adjusting components are rotationally symmetrical about their horizontal midlines. When the rotating shaft 101 rotates forward, the impeller 124 in the mounting cylinder 120 on the upper support plate 110 is at the front side of the corresponding crushing cone 123, and the impeller 124 can enter the liquid in the mounting cylinder 120. The impeller 124 in the mounting tube 120 on the upper support plate 110 is located at the rear side of the corresponding crushing cone 123, and the rotational force of the impeller 124 is small, which will not drive the corresponding slider 130 to move on the support plate 110; similarly, the impeller 124 in the mounting tube 120 on the lower support plate 110 is located at the front side of the corresponding crushing cone 123, and the impeller 124 can rotate under the action of the liquid entering the mounting tube 120, and the impeller 124 in the mounting tube 120 on the upper support plate 110 is located at the rear side of the corresponding crushing cone 123, and the rotational force of the impeller 124 is small, which will not drive the corresponding slider 130 to move on the support plate 110; in this way, the forward and reverse rotation of the rotating shaft 101 not only promotes the mixing of the material and the liquid, but also enables the rotating shaft 101 to adjust the spacing of the multiple longitudinal wires 131 according to the degree of passage of the agglomerated material in the liquid no matter which direction it rotates.

[0044] In this embodiment, multiple longitudinal wires 131 are arranged at an incline relative to the horizontal plane, and the vertical distances between the two ends of each longitudinal wire 131 and the rotating shaft 101 are consistent. In the rotation direction of the rotating shaft 101, the longitudinal wire 131 is provided with a front end and a rear end. The crushing cone 123 is located at the front end of the longitudinal wire 131 in a group of adjusting components on the front side of the corresponding impeller 124, and the crushing cone 123 is located at the rear end of the longitudinal wire 131. When the rotating shaft 101 rotates, the agglomerated materials intercepted by the longitudinal wires 131 approach the mounting tube 120 in a group of adjusting components on the rear side of the corresponding impeller 124 under the guidance of the longitudinal wires 131 and the transverse wires 114. The agglomerated materials that cannot be crushed by the longitudinal wires 131 and the transverse wires 114 enter the mounting tube 120 and are crushed by the crushing cone 123.

[0045] When the rotating shaft 101 rotates, the slider 130 located on the same support plate 110 can move relative to the slider 130 on the other support plate 110, the two sliders 130 in the same group are misaligned, and the longitudinal wire 131 is tilted relative to the transverse wire 114; when the rotating shaft 101 rotates in the opposite direction, the two sliders 130 in the same group return to their original positions, and the longitudinal wire 131 is reset. During the process, the longitudinal wire 131 and the transverse wire 114 form a shearing motion, which can crush the agglomerated materials stuck between the longitudinal wire 131 and the transverse wire 114.

[0046] The working principle of a controllable mixing device for clean fracturing fluid provided in the above embodiment is:

[0047] First, liquid is added into the cylinder 100, and then the required raw materials are added in sequence, and then the motor 102 is started. The motor 102 drives the rotating shaft 101 to rotate back and forth, and the rotating shaft 101 drives the support plate 110 to rotate, and the support plate 110 drives the longitudinal wire 131 and the transverse wire 114 to rotate around the rotating shaft 101. During the rotation of the longitudinal wire 131 and the transverse wire 114, they will hit the agglomerated materials in contact, thereby breaking the agglomerated materials; at the same time, the rotating support plate 110 drives the installation cylinder 120 to move through the slider 130. If the rotating support plate 110 In the direction of movement, the impeller 124 in the mounting cylinder 120 is located in front of the crushing cone 123. The relative movement of the impeller 124 and the liquid entering the mounting cylinder 120 causes the liquid to drive the impeller 124 to rotate. The rotation of the impeller 124 drives the crushing cone 123 to rotate through the rotating rod 122. The rotation of the crushing cone 123 will crush the agglomerated materials put into the liquid entering the mounting cylinder 120. Through the cooperation of the crushing cone 123 and the inner wall of the mounting cylinder 120, the agglomerated materials stuck therebetween will be rotated and squeezed, and then broken.

[0048] When the impeller 124 drives the rotating rod 122 to rotate, the rotation of the rotating rod 122 will drive the fixing ring 143 to rotate. At this time, the push rod 148 slidingly arranged in the radial direction of the fixing ring 143 is subjected to the centrifugal force to move in the direction away from the rotating rod 122. At the same time, multiple push rods 148 push the sliding sleeve 144 to slide in the axial direction of the rotating rod 122 in the direction away from the mounting tube 120 through the semi-circular spherical groove of the sliding sleeve 144. The sliding sleeve 144 will drive a slide plate 140 to slide through the corresponding telescopic rod 145. The sliding slide plate 140 drives the two friction plates 142 thereon to move, and one of the friction plates 142 will contact the corresponding support plate 110. The greater the centrifugal force applied to the push rod 148, the greater the centrifugal force applied to the sliding sleeve 144. The greater the axial thrust, the greater the friction between the friction plate 142 and the corresponding support plate 110, and the more difficult it is for the slider 130 corresponding to the slider 140 to slide on the support plate 110; when the difference in the passing rate of the agglomerated material in the two adjacent mounting cylinders 120 is small, the difference in the rotational resistance to the crushing cone 123 is also small, and the speed difference between the two wheels is small. At this time, the pulling force of the two telescopic rods 145 on the same slider 140 on the two adjacent mounting cylinders 120 is basically the same, and the friction between the friction plate 142 on the slider 140 and the support plate 110 is not enough to overcome the sliding force of the corresponding slider 130 on the support plate 110, and the slider 130 will drive the corresponding longitudinal wire 131 to move.

[0049] When the passing rates of the agglomerated materials in two adjacent mounting barrels 120 differ greatly, it means that there are more large agglomerated materials in one of the rotating barrels, and the resistance to the rotation of the crushing cone 123 increases. It also means that the agglomerated materials are unevenly distributed in the liquid. At this time, the rotation speed of the rotating rod 122 in the mounting barrel 120 with more agglomerated materials is lower than the rotation speed of the rotating rod 122 in the other mounting barrel 120. The relative movement distances of the sliding sleeves 144 on the two rotating rods 122 differ greatly. The corresponding slide plate 140 moves a larger distance under the pull of the telescopic rod 145, and the pressure between the friction plate 142 and the support plate 110 also increases, that is, the friction force between the friction plate 142 and the support plate 110 is greater than the sliding force of the corresponding slider 130 on the support plate 110. The change in the spacing between the longitudinal wires 131 is relatively small, which can better crush the agglomerated materials in the liquid.

[0050] During the rotation of the support plate 110, the support plate 110 will drive the friction ring 121 on the rotating rod 122 to contact the guide plate 111. When the friction ring 121 rotates driven by the rotating rod 122, after the friction ring 121 contacts the guide plate 111, the friction ring 121 will drive the mounting cylinder 120 on the guide plate 111 to move along the radial direction of the rotating shaft 101, and the mounting cylinder 120 will drive the corresponding slider 130 to slide in the through groove 113, and the slider 130 will also drive the corresponding longitudinal wire 131 to move. When one of the sliders 130 slides to the limit position in the through groove 113, it will no longer slide. The remaining sliders 130 will continue to approach each other during the sliding process and continuously compress the first spring 133.

[0051] When each slider 130 slides in the through groove 113, when the block 135 on the slider 130 passes over a groove 137 on the card plate 134 and the friction ring 121 is separated from the guide plate 111, the slider 130 will be fixed at the current position until the friction ring 121 contacts the guide plate 111 again and the slider 130 is not locked by the friction plate 142, then the sliders 130 will continue to approach each other.

[0052] After the material and liquid in the cylinder 100 are fully mixed, they are discharged through the discharge pipe; then the rotating shaft 101 is rotated so that the connecting plate 112 is located at the position of the side door, and then the side door is opened. The operator pulls out the locking block 136, and the card plate 134 is disengaged from the protrusion 132 on the locking block 136. The third spring contracts, driving the card plate 134 away from the corresponding card block 135. After the card plate 134 is disengaged from the card block 135, the first spring 133 in the compressed state begins to release energy, pushing the slider 130 to approach the rotating shaft 101, and the slider 130 drives the longitudinal wire 131 to reset.

[0053] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0054] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A controllable mixing device for clean fracturing fluid, characterized in that: include: A cylinder, a rotating shaft and a stirring mechanism, wherein the cylinder is fixedly arranged, the rotating shaft is vertically arranged in the cylinder, and the rotating shaft is rotatably connected to the cylinder around its own axis, and the stirring mechanism comprises a support plate, a cutting assembly, an adjusting assembly, a guide plate and a locking assembly, wherein two support plates are provided, one end of the two support plates is respectively connected to the rotating shaft, the two support plates are on the same side of the rotating shaft, and a spacing is provided between the two support plates, and the two support plates extend along a first direction, and the first direction is a horizontal direction; a plurality of cutting assemblies are provided, each of which can be slidably arranged on the two support plates along the first direction in a direction away from the rotating shaft, and a plurality of cutting assemblies are arranged in sequence along the first direction, and a first spring is provided between two adjacent cutting assemblies for cutting the material blocked in the cylinder when the rotating shaft rotates; There are multiple adjustment components, and the multiple adjustment components are slidably arranged on a support plate along a first direction. Each adjustment component includes a mounting cylinder, a rotating part and a friction ring. Each mounting cylinder is correspondingly arranged on a cutting component, and the multiple mounting cylinders are arranged at intervals on the multiple cutting components. The axis of the mounting cylinder extends in the horizontal direction and is perpendicular to the sliding direction of the cutting component. The rotating part is rotatably arranged in the mounting cylinder around the rotating axis of the mounting cylinder, and is used to crush the agglomerated materials entering the mounting cylinder and provide corresponding rotational force according to the resistance generated when crushing the agglomerated materials; the friction ring is fixedly installed on the rotating part, and the friction ring is coaxial with the mounting cylinder, the guide plate is fixedly installed on the inner wall of the cylinder, and the guide plate extends along the first direction, and the friction ring can be rollingly connected with the guide plate; there are multiple locking components, each locking component is arranged on the cutting component between two adjacent mounting cylinders, and each locking component is connected to two adjacent rotating parts, and is used to limit the corresponding cutting component according to the rotational force generated by the two adjacent rotating parts.

2. A controllable mixing device for clean fracturing fluid according to claim 1, characterized in that: The rotating part includes a rotating rod, a crushing cone and an impeller. The rotating rod is rotatably arranged on the mounting tube, and the rotating rod is coaxial with the mounting tube. The crushing cone is sleeved on the rotating rod, and the crushing cone is fixedly connected to the rotating rod. The crushing cone is arranged in the mounting tube, and a gap is provided between the large end of the crushing cone and the inner wall of the mounting tube. In the rotation direction of the rotating shaft, the small end of the crushing cone is located in front of its large end. The impeller is sleeved on the rotating rod, and the impeller is fixedly connected to the rotating rod. The impeller is arranged in the mounting tube, and the impeller is located in front of the crushing cone. The diameter of the impeller is matched with the diameter of the inner wall of the mounting tube. The friction ring is fixedly connected to the rotating rod, and the friction ring is coaxial with the rotating rod.

3. A controllable mixing device for clean fracturing fluid according to claim 2, characterized in that: A plurality of arc grooves are provided on the peripheral surface of the crushing cone, and each arc groove extends from the small end to the large end of the crushing cone.

4. A controllable mixing device for clean fracturing fluid according to claim 2, characterized in that: A through slot is provided on the support plate, and the cutting assembly includes a slider, a longitudinal wire and a clamping portion. There are multiple sliders, two sliders form a group, and each group of sliders is slidably arranged in the through slot of a support plate along a first direction. Each mounting tube is installed on one of two adjacent sliders on the same support plate. The number of longitudinal wires is consistent with the number of slider groups, and the two ends of each longitudinal wire are slidably connected to the two sliders in the same group. There are multiple first springs, and each first spring is located between two adjacent sliders on a support plate. The clamping portion is used to prevent the slider from moving in a direction close to the rotating shaft.

5. A controllable mixing device for clean fracturing fluid according to claim 4, characterized in that: A connecting plate is fixedly installed at one end of the two support plates away from the rotating shaft. A plurality of transverse wires extending along the radial direction of the rotating shaft are arranged on one side of the connecting plate close to the rotating shaft. The other end of the transverse wire is connected to the rotating shaft. The plurality of transverse wires are evenly arranged on the connecting plate, and the transverse wires are slidably connected to the longitudinal wires.

6. A controllable mixing device for clean fracturing fluid according to claim 5, characterized in that: A side door is provided on the cylinder body, the height of the side door is greater than the length of the connecting plate in the vertical direction, and the upper and lower ends of the connecting plate are located within the height range of the side door.

7. A controllable mixing device for clean fracturing fluid according to claim 4, characterized in that: Each locking assembly includes a slide plate and two driving parts. A slide groove is provided on the surface of the slide plate. The slide plate is slidably arranged in the slide groove along the axial direction of the rotating rod. The slide plate connected to the mounting tube and the slide plate slidably connected to the slide plate are slidably arranged on the same support plate. Two friction plates are arranged on a surface of the slide plate close to the support plate, and the two friction plates are located on both sides of the support plate. The two driving parts are respectively arranged on two rotating rods adjacent to the slide plate, and are both arranged outside the mounting tube. The two driving parts are located at one end of the two mounting tubes away from each other. The two driving parts are used to drive the slide plate to move in the slide groove along the axial direction of the rotating rod.

8. A controllable mixing device for clean fracturing fluid according to claim 7, characterized in that: Each driving part includes a fixed ring, a sliding sleeve, a telescopic rod and a fourth spring. The fixed ring is sleeved on the rotating rod and the fixed ring is fixedly connected to the rotating rod. The sliding sleeve is sleeved on a rotating rod adjacent to the sliding block and the sliding sleeve is slidably connected to the rotating rod. One end of the telescopic rod is rotatably connected to the sliding sleeve around the axis of the rotating rod, and the other end of the telescopic rod is rotatably connected to the sliding plate. The rotation axis of the telescopic rod rotatably connected to the sliding plate is parallel to the rotation axis of the rotating rod. The fourth spring is sleeved on the rotating rod, and the fourth spring is located on the side of the sliding sleeve away from the fixed ring. The two ends of the fourth spring are respectively connected to the rotating rod and the sliding sleeve. A plurality of evenly distributed push rods are provided on the circumferential surface of the fixed ring. Each push rod is slidably provided in the fixed ring along the radial direction of the fixed ring. A hemispherical groove is provided at one end of the sliding sleeve close to the fixed ring. The center of the hemispherical groove is located on the rotating shaft of the rotating rod, and each push rod is slidably connected to the hemispherical groove. The two driving parts on each rotating rod are symmetrically arranged, and the telescopic rods in the two driving parts are rotatably connected to the two sliding plates adjacent to the rotating rod.

9. A controllable mixing device for clean fracturing fluid according to claim 4, characterized in that: There are two groups of adjusting components and locking components, each group of adjusting components and locking components is correspondingly arranged on a support plate, two guide plates are provided, each guide plate corresponds to a friction ring in a group of adjusting components, and the rotation of the impellers in the two groups of adjusting components can drive the corresponding friction ring to move on the corresponding guide plate in a direction away from the rotating shaft, and the rotating parts in the two groups of adjusting components are rotationally symmetrical about their horizontal midlines.

10. A controllable mixing device for clean fracturing fluid according to claim 9, characterized in that: Multiple longitudinal wires are arranged obliquely relative to the horizontal plane, and the vertical distances between the two ends of each longitudinal wire and the rotating shaft are consistent. In the rotation direction of the rotating shaft, the longitudinal wire is provided with a front end and a rear end. The crushing cone is located at the front end of a group of adjusting components on the front side of the corresponding impeller and the crushing cone is located at the rear end of the longitudinal wire.

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