Feeding system

Abstract

The utility model relates to a feeding system. The feeding system comprises a mixer, a solid adding assembly, a liquid adding assembly and sand mixing equipment. The solid adding assembly comprises a solid adding container, a solid conveyor and a first conveying pipe, the solid conveyor is connected with the solid adding container, one end of the first conveying pipe is connected with the solid conveyor, and the other end of the first conveying pipe is connected with the mixer; the liquid adding assembly comprises a liquid conveyor and a second conveying pipe, one end of the second conveying pipe is connected with the liquid conveyor, and the other end of the second conveying pipe is connected with the mixer. The sand mixing device is connected with a third conveying pipe. The end, away from the sand mixing device, of the third conveying pipe is connected with the mixer. The mode that the solid additive and the liquid additive are firstly mixed and then input into the sand mixing equipment is adopted, so that the solid additive can flow into the sand mixing equipment along with the liquid additive, the solid adding tank does not need to be arranged at the upper end of the sand mixing equipment and does not need to fall to be charged under the action of gravity, powder drifting is avoided, and the environment is protected.

Description

Technical Field

[0001] The present application relates to the field of fracturing equipment, and in particular to a feeding system. Background Art

[0002] At present, in fracturing operations, solid additives (including breakers, fibers, temporary plugging agents, etc.) and liquid additives need to be added to the sand mixing tank in the sand mixing equipment for mixing.

[0003] Among them, the solid additives used are usually added through a simple dry adding device on the top plate of the sand mixing tank. The sand mixing tank is large in size. The simple dry adding device includes an adding tank and a screw conveyor. The adding tank is arranged above the sand mixing tank, and the outlet of the adding tank faces the sand mixing tank. The screw conveyor is inclined and the upper end is connected to the adding tank for adding solid additives to the sand mixing tank.

[0004] In the process of solid additives flowing from the adding tank into the sand mixing tank, the materials are added by gravity, especially in windy conditions, which will cause the powder to float and cause pollution to the surrounding environment. Utility Model Content

[0005] The purpose of the present application is to provide a feeding system, which adopts a method of first mixing solid additives with liquid additives and then inputting them into the sand mixing equipment, so that the solid additives can flow into the sand mixing equipment along with the liquid additives, so that the solid adding tank does not need to be arranged at the upper end of the sand mixing equipment, and does not need to rely on gravity to add materials, thereby avoiding the scattering of powder materials, reducing pollution to the surrounding environment, and protecting the environment.

[0006] To this end, an embodiment of the present application provides a feeding system, including: a mixer; a solid addition component, including a solid addition container, a solid conveyor and a first conveying pipe, the solid conveyor is connected to the solid addition container, one end of the first conveying pipe is connected to the solid conveyor and the other end is connected to the mixer; a liquid addition component, including a liquid conveyor and a second conveying pipe, one end of the second conveying pipe is connected to the liquid conveyor and the other end is connected to the mixer; and a sand mixing device, connected to a third conveying pipe, the third conveying pipe is connected to the mixer at one end away from the sand mixing device.

[0007] In a possible implementation, the liquid adding assembly further includes a pressure sensor, and the pressure sensor is connected to the second delivery pipe to detect the pressure in the second delivery pipe.

[0008] In a possible implementation, the solid addition assembly further includes a first shut-off valve, which is connected to the first delivery pipe, and the first shut-off valve is used to control the connection state between the solid addition container and the mixer.

[0009] In a possible implementation, the liquid adding assembly further includes a second shut-off valve, the second shut-off valve is connected to the second delivery pipe, and the second shut-off valve is used to control the connection state between the liquid delivery device and the mixer.

[0010] In a possible implementation, the third delivery pipe is connected to a third shut-off valve, and the third shut-off valve is used to control the connection state between the mixer and the sand mixing device.

[0011] In a possible implementation, at least two sand mixing devices are provided, and at least two of the sand mixing devices are connected to the mixer through the third conveying pipe.

[0012] In a possible implementation, at least two third conveying pipes are provided, and at least two of the third conveying pipes correspond one-to-one to at least two of the sand mixing devices; or, the third conveying pipe is provided with at least two discharge ports, and at least two of the discharge ports correspond one-to-one to at least two of the sand mixing devices.

[0013] In a possible implementation, at least two groups of the solid addition components are provided, and the first conveying pipes of at least two groups of the solid addition components are connected to the mixer.

[0014] In a possible implementation, at least two groups of the solid addition components are provided, and at least two groups of the mixers are provided, at least two groups of the solid addition components correspond one-to-one to at least two groups of the mixers, and the mixers are connected to the sand mixing equipment via a third delivery pipe.

[0015] In a possible implementation, at least two third conveying pipes are provided, and at least two of the third conveying pipes correspond one-to-one to at least two of the mixers; or, at least two feed ports are provided on the third conveying pipe, and at least two of the feed ports correspond one-to-one to at least two of the mixers.

[0016] The feeding system provided according to the embodiment of the present application includes a mixer, a solid addition component, a liquid addition component and a sand mixing device; the solid addition component includes a solid addition container, a solid conveyor and a first conveying pipe, the solid conveyor is connected to the solid addition container, one end of the first conveying pipe is connected to the solid conveyor and the other end is connected to the mixer; the liquid addition component includes a liquid conveyor and a second conveying pipe, one end of the second conveying pipe is connected to the liquid conveyor and the other end is connected to the mixer; the sand mixing device is connected to a third conveying pipe, and the end of the third conveying pipe away from the sand mixing device is connected to the mixer. The feeding system adopts a method of first mixing the solid additive with the liquid additive and then inputting it into the sand mixing device, so that the solid additive can flow into the sand mixing device along with the liquid additive, so that the solid addition tank does not need to be set at the upper end of the sand mixing device, and does not need to be added by gravity, thereby avoiding the scattering of powder, reducing the pollution to the surrounding environment, and protecting the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] Figure 1 A schematic structural diagram of a first feeding system provided in an embodiment of the present application is shown;

[0021] Figure 2 A schematic structural diagram of a second feeding system provided in an embodiment of the present application is shown;

[0022] Figure 3 A schematic structural diagram of a third feeding system provided in an embodiment of the present application is shown;

[0023] Figure 4 A schematic structural diagram of a fourth feeding system provided in an embodiment of the present application is shown;

[0024] Figure 5 A schematic structural diagram of a fifth feeding system provided in an embodiment of the present application is shown;

[0025] Figure 6 A schematic structural diagram of a sixth feeding system provided in an embodiment of the present application is shown;

[0026] Figure 7 A structural schematic diagram of the seventh feeding system provided in an embodiment of the present application is shown.

[0027] Description of reference numerals:

[0028] 1. Mixer; 2. Solid addition component; 21. Solid addition container; 22. Solid conveyor; 23. First conveying pipe; 24. First shut-off valve; 3. Liquid addition component; 31. Liquid conveyor; 32. Second conveying pipe; 33. Pressure sensor; 34. Second shut-off valve; 4. Sand mixing equipment; 41. Third conveying pipe; 42. Third shut-off valve. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0030] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0031] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0032] like Figure 1 As shown, Figure 1 A structural schematic diagram of a first feeding system provided in an embodiment of the present application is shown. The embodiment of the present application provides a feeding system, comprising a mixer 1, a solid addition component 2, a liquid addition component 3 and a sand mixing device 4; the solid addition component 2 comprises a solid addition container 21, a solid conveyor 22 and a first conveying pipe 23, the solid conveyor 22 is connected to the solid addition container 21, one end of the first conveying pipe 23 is connected to the solid conveyor 22 and the other end is connected to the mixer 1; the liquid addition component 3 comprises a liquid conveyor 31 and a second conveying pipe 32, one end of the second conveying pipe 32 is connected to the liquid conveyor 31 and the other end is connected to the mixer 1; the sand mixing device 4 is connected to a third conveying pipe 41, and the end of the third conveying pipe 41 away from the sand mixing device 4 is connected to the mixer 1.

[0033] It should be understood that the feeding system includes a mixer 1, a solid addition component 2, a liquid addition component 3 and a sand mixing device 4. The mixer 1 is provided with an inlet and an outlet, wherein the inlet may be provided with one or two, and the present application does not limit it. When the mixer 1 is provided with one inlet, the solid addition component 2 and the liquid addition component 3 both enter from one inlet, and when the mixer 1 is provided with two inlets, the solid addition component 2 and the liquid addition component 3 enter from two inlets respectively. The mixer 1 is provided with one outlet, and the outlet of the mixer 1 is connected to the sand mixing device 4 through a third delivery pipe 41.

[0034] The solid addition component 2 includes a solid addition container 21, a solid conveyor 22 and a first conveying pipe 23. The solid addition container 21 is used to load solid additives. The solid addition container 21 has a large volume. The solid additives stored in the solid addition container 21 can meet the customer's needs for at least one fracturing operation, and no manual feeding is required during the operation. The solid additives include debonding agents, fibers, temporary plugging agents, etc. The solid conveyor 22 is arranged below the solid addition container 21, and is used to stably output the solid additives in the solid addition container 21 to the outside, wherein the solid conveyor 22 can be a spiral solid conveyor, or other forms of solid conveyors such as a star feeder, which are not limited in this application.

[0035] One end of the first conveying pipe 23 is connected to the solid conveyor 22 , and the other end is connected to the mixer 1 . When working, the solid conveyor 22 is started to convey the solid additive in the solid addition container 21 to the mixer 1 through the first conveying pipe 23 .

[0036] The liquid adding assembly 3 includes a liquid conveyor 31 and a second conveying pipe 32. The liquid conveyor 31 can be an input manifold of the sand mixing device 4, and the liquid is supplied by the suction centrifugal pump of the sand mixing device 4, or it can be an independent centrifugal pump. The liquid conveyor 31 can provide the system with liquid additives with pressure and flow, so as to facilitate the delivery of the liquid additives. One end of the second conveying pipe 32 is connected to the liquid conveyor 31 and the other end is connected to the mixer 1. When working, the liquid conveyor 31 is started, and the liquid additive is input into the mixer 1 through the liquid conveyor 31.

[0037] The mixer 1 can be a jet mixer or other pipeline mixing device, or a small mixing pump, mixing tank or other mixing device, which is not limited in this application. The mixer 1 preliminarily mixes the liquid additive with the solid additive, and the outlet of the mixer 1 is connected to the sand mixing device 4 through the third delivery pipe 41, so that the preliminarily mixed liquid additive and solid additive are delivered to the sand mixing device 4. Since the system adopts the method of first mixing the solid additive with the liquid additive and then inputting it into the sand mixing device 4, the solid additive can flow into the sand mixing device 4 along with the liquid additive, so that the solid addition tank does not need to be set at the upper end of the sand mixing device 4, and does not need to be added by gravity, which avoids the dispersion of powder, reduces the pollution to the surrounding environment, and protects the environment.

[0038] Moreover, the system can realize adding materials to different positions of the sand mixing equipment 4, such as the mixing tank, suction manifold or discharge manifold. The system breaks the limitations of space and weight, so that the solid addition component 2 can be moved from the top of the sand mixing tank of the sand mixing equipment 4 to the ground. The volume of the solid addition container 21 and the conveying amount of the solid conveyor 22 can be arbitrarily configured according to customer requirements and operation requirements, and can realize large storage capacity, multiple additives, and large addition amount. In addition, during the operation process, the system does not need to manually add materials to the solid addition container 21, realizes automatic operation, reduces labor, and is more suitable for continuous long-term operation. At the same time, the solid additive is added after being converted into a mixed liquid, which reduces the difficulty of mixing the solid additive and improves the mixing efficiency.

[0039] In some optional embodiments, the liquid addition component 3 further includes a pressure sensor 33, which is connected to the second delivery pipe 32 to detect the pressure in the second delivery pipe 32. The setting of the pressure sensor 33 can facilitate the user to understand the pressure of the second delivery pipe 32 at any time, so as to understand the delivery speed of the liquid additive in the second delivery pipe 32, and is also convenient for adjusting the speed of the liquid additive, and the user can troubleshoot problems of the liquid addition component 3 through the setting of the pressure sensor 33. When in use, first turn on the pressure sensor 33 to test the pressure in the second delivery pipe 32. When the second delivery pipe 32 is tested to be stable to the target value, the liquid delivery device 31 is then turned on to deliver the liquid additive.

[0040] In some optional embodiments, the solid addition component 2 further includes a first shutoff valve 24, which is connected to the first delivery pipe 23, and is used to control the connection state between the solid addition container 21 and the mixer 1. When the solid addition container 21 is required to deliver solid additives to the mixer 1, the first shutoff valve 24 is opened to connect the solid addition container 21 with the mixer 1, and when the solid addition container 21 is not required to deliver solid additives to the mixer 1, the first shutoff valve 24 is closed to disconnect the solid addition container 21 from the mixer 1, thereby providing a moisture-proof setting for the solid additive to prevent the solid additive from forming an arch after becoming damp, thereby affecting the discharge of the material.

[0041] In some optional embodiments, the liquid addition component 3 also includes a second shutoff valve 34, which is connected to the second delivery pipe 32, and the second shutoff valve 34 is used to control the connection state between the liquid conveyor 31 and the mixer 1. When the liquid conveyor 31 is required to convey the liquid additive to the mixer 1, the second shutoff valve 34 is opened to connect the liquid conveyor 31 with the mixer 1, and when the liquid conveyor 31 is not required to convey the liquid additive to the mixer 1, the second shutoff valve 34 is closed to disconnect the liquid conveyor 31 from the mixer 1. Before the liquid conveyor 31 conveys the liquid additive to the mixer 1, the second shutoff valve 34 is closed, and the pressure sensor 33 is required to detect the second delivery pipe 32. When the pressure of the second delivery pipe 32 stably reaches the target value, the second shutoff valve 34 is opened to convey the liquid additive. The use of the second shutoff valve 34 and the pressure sensor 33 can further improve the delivery effect of the liquid additive.

[0042] Reference Figure 2 , Figure 2 The structural schematic diagram of the second feeding system provided by the embodiment of the present application is shown. In some optional embodiments, the third delivery pipe 41 is connected to the third shut-off valve 42, and the third shut-off valve 42 is used to control the connection state between the mixer 1 and the sand mixing equipment 4. When the mixed solid additives and liquid additives need to be input into the sand mixing equipment 4, the third shut-off valve 42 is opened, and the mixer 1 is connected to the sand mixing equipment 4; when the mixed solid additives and liquid additives do not need to be input into the sand mixing equipment 4, the third shut-off valve 42 is closed to shut off the mixer 1 from the sand mixing equipment 4. The setting of the third shut-off valve 42 can prevent the solid additives and liquid additives that have not been preliminarily mixed from entering the sand mixing equipment 4, so as to ensure the delivery effect of the solid additives and the liquid additives.

[0043] In some optional embodiments, at least two sand mixing devices 4 are provided, and at least two sand mixing devices 4 are connected to the mixer 1 through the third delivery pipe 41. The number of sand mixing devices 4 can be two, three or more, and the provision of at least two sand mixing devices 4 allows the mixed solid additives and liquid additives discharged from the mixer 1 to enter the sand mixing devices 4 separately or simultaneously, which can improve the convenience and speed of the operation.

[0044] In some optional embodiments, at least two third delivery pipes 41 are provided, and at least two third delivery pipes 41 correspond to at least two sand mixing devices 4 one by one. The number of third delivery pipes 41 is equal to the number of sand mixing devices 4, and each sand mixing device 4 is connected to the mixer 1 through a third delivery pipe 41. In one example, there are two sand mixing devices 4, and two third delivery pipes 41 are also provided. There are three sand mixing devices 4, and three third delivery pipes 41 are also provided. Each third delivery pipe 41 is provided with a third shut-off valve 42, and the setting of the third shut-off valve 42 can control the connection between the sand mixing device 4 and the mixer 1. The operator can control one, two, three or all of the sand mixing devices 4 to be connected to the mixer 1 through the third shut-off valve 42, so that the user can adjust the use of the sand mixing device 4 according to the operation situation, thereby improving the convenience and speed of the user's operation.

[0045] Each sand mixing device 4 uses a corresponding third delivery pipe 41, which can avoid the situation where a blockage of one third delivery pipe 41 affects other sand mixing devices 4, thereby reducing the risk of blockage of the system.

[0046] In an optional embodiment, the third delivery pipe 41 is provided with at least two discharge ports, and the at least two discharge ports correspond to at least two sand mixing devices 4 one by one. The third delivery pipe 41 is a manifold system, and the third delivery pipe 41 is provided with at least two discharge ports, and the number of discharge ports is equal to the number of sand mixing devices 4. Each sand mixing device 4 is connected to the mixer 1 through a discharge port of the third delivery pipe 41. In an example, there are two sand mixing devices 4, and two discharge ports are also provided. There are three sand mixing devices 4, and three discharge ports are also provided. Each third delivery pipe 41 is provided with a third shut-off valve 42 corresponding to each discharge port. The setting of the third shut-off valve 42 can control the connection between the sand mixing device 4 and the mixer 1. The operator can control one, two, three or all of the sand mixing devices 4 to be connected to the mixer 1 through the third shut-off valve 42, so that the user can adjust the use of the sand mixing device 4 according to the operation conditions, thereby improving the convenience and speed of the user's operation.

[0047] The present application adopts one third delivery pipe 41 corresponding to all the sand mixing devices 4, which can reduce the cost of the third delivery pipe 41 and reduce the cost of the present system.

[0048] Reference Figure 3-Figure 4 , Figure 3 The schematic diagram of the structure of the third feeding system provided in the embodiment of the present application is shown. Figure 4 A schematic structural diagram of a fourth feeding system provided in an embodiment of the present application is shown.

[0049] In some optional embodiments, at least two groups of solid addition components 2 are provided, and the first delivery pipes 23 of at least two groups of solid addition components 2 are connected to the mixer 1. The number of solid addition components 2 can be two, three or more. The provision of at least two solid addition components 2 can make the solid additives added by all solid addition components 2 the same, thereby increasing the number of solid addition containers 21, avoiding the situation of insufficient solid additives during operation, and avoiding manual feeding. Different solid additives can also be added separately to facilitate the user to adjust the type of solid additives. Among them, the first delivery pipe 23 of each group of solid addition components 2 is provided with a first shut-off valve 24, and the user can adjust the type and usage of the solid additive through the first shut-off valve 24, thereby improving the convenience and speed of the operation.

[0050] In one example, at least two groups of solid adding assemblies 2 are provided, and one group of sand mixing device 4 is provided.

[0051] In one example, at least two groups of solid adding assemblies 2 are provided, at least two sand mixing devices 4 are provided, and at least two third conveying pipes 41 are provided.

[0052] In one example, at least two groups of solid adding components 2 are provided, at least two sand mixing devices 4 are provided, and one third conveying pipe 41 is provided, and one third conveying pipe 41 is provided with at least two discharge ports.

[0053] In some optional embodiments, at least two groups of solid addition components 2 are provided, and at least two groups of mixers 1 are provided, and at least two groups of solid addition components 2 correspond to at least two groups of mixers 1 one by one, and the mixers 1 are connected to the sand mixing device 4 through the third delivery pipe 41. The provision of at least two groups of mixers 1 can further increase the stirring speed, and at the same time, different solid additives and liquid additives can be controlled to be stirred separately, thereby improving the stirring effect.

[0054] Among them, the second delivery pipe 32 of the liquid addition component 3 of the present application is provided with at least two discharge ports, the number of the discharge ports is equal to the number of the mixers 1 and corresponds one to one, and a second shut-off valve 34 is provided at the discharge port corresponding to the second delivery pipe 32. The setting of the second shut-off valve 34 can control the connectivity between the liquid conveyor 31 and the mixer 1. The operator can control one, two or three or all of the mixers 1 to be connected to the liquid conveyor 31 through the second shut-off valve 34, so as to facilitate the user to adjust the use of the liquid conveyor 31 and the mixer 1 according to the operating conditions, thereby improving the convenience and speed of the user's operation.

[0055] Reference Figure 5-Figure 7 , Figure 5 The structure diagram of the fifth feeding system provided in the embodiment of the present application is shown. Figure 6The sixth feeding system provided in the embodiment of the present application is shown in the structural diagram. Figure 7 The seventh feeding system provided in the embodiment of the present application is shown in the structural schematic diagram. In one example, at least two groups of solid adding components 2 are provided, at least two groups of mixers 1 are provided, and one sand mixing device 4 is provided.

[0056] In one example, at least two groups of solid adding assemblies 2 are provided, at least two groups of mixers 1 are provided, and at least two sand mixing devices 4 are provided.

[0057] In some optional embodiments, at least two third delivery pipes 41 are provided, and at least two third delivery pipes 41 correspond to at least two mixers 1 one by one. When at least two groups of solid addition components 2 are provided, at least two groups of mixers 1 are provided, and one sand mixing device 4 is provided. The number of third delivery pipes 41 is equal to the number of mixers 1, and each mixer 1 is connected to the mixer 1 through a third delivery pipe 41. In one example, two mixers 1 are provided, and two third delivery pipes 41 are also provided. Three mixers 1 are provided, and three third delivery pipes 41 are also provided. Each third delivery pipe 41 is provided with a third shut-off valve 42. The setting of the third shut-off valve 42 can control the connection between a mixer 1 and the sand mixing device 4. The operator can control one, two, three or all mixers 1 to be connected to the sand mixing device 4 through the third shut-off valve 42, so as to facilitate the user to adjust the use of the mixer 1 according to the operation conditions, thereby improving the convenience and operation speed of the user's operation.

[0058] In some optional embodiments, the third delivery pipe 41 is provided with at least two feed ports, and the at least two feed ports correspond one-to-one to the at least two mixers 1 .

[0059] In one example, when at least two groups of solid addition components 2 are provided, at least two groups of mixers 1 are provided, and one sand mixing device 4 is provided. The third delivery pipe 41 is a manifold system, and the number of feed ports of the third delivery pipe 41 is equal to the number of mixers 1. Each mixer 1 is connected to the mixer 1 through one feed port of the third delivery pipe 41. In one example, two mixers 1 are provided, and two feed ports of the third delivery pipe 41 are also provided. Three mixers 1 are provided, and three feed ports of the third delivery pipe 41 are also provided. Each feed port of the third delivery pipe 41 corresponds to a third shut-off valve 42. The setting of the third shut-off valve 42 can control the connection between a mixer 1 and the sand mixing device 4. The operator can control one, two, three or all mixers 1 to be connected to the sand mixing device 4 through the third shut-off valve 42.

[0060] In one example, when at least two groups of solid addition components 2 are provided, at least two groups of mixers 1 are provided, and at least two sand mixing devices 4 are provided. The third conveying pipe 41 is a manifold system, the number of feed ports of the third conveying pipe 41 is equal to the number of mixers 1, each mixer 1 is connected to the mixer 1 through a feed port of the third conveying pipe 41, the third conveying pipe 41 is provided with at least two discharge ports, the number of discharge ports is equal to the number of sand mixing devices 4, each sand mixing device 4 is connected to the mixer 1 through a discharge port of the third conveying pipe 41, in one example, two mixers 1 are provided, two feed ports of the third conveying pipe 41 are also provided, two sand mixing devices 4 are provided, and two discharge ports are also provided; three mixers 1 are provided, three feed ports of the third conveying pipe 41 are also provided, three sand mixing devices 4 are provided, and three discharge ports are also provided.

[0061] Each feed port of the third delivery pipe 41 corresponds to a third shut-off valve 42. The third shut-off valve 42 can control the connection between a mixer 1 and the sand mixing device 4. The operator can control one, two, three or all mixers 1 to be connected to the sand mixing device 4 through the third shut-off valve 42. The third delivery pipe 41 is provided with a third shut-off valve 42 at each corresponding discharge port. The third shut-off valve 42 can control the connection between the sand mixing device 4 and the mixer 1. The operator can control one, two, three or all sand mixing devices 4 to be connected to the mixer 1 through the third shut-off valve 42, so that the user can adjust the use of the sand mixing device 4 according to the operation conditions, thereby improving the convenience and speed of the user's operation.

[0062] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0063] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0064] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A feeding system, It is characterized in that include mixer; A solid addition assembly, comprising a solid addition container, a solid conveyor and a first conveying pipe, wherein the solid conveyor is connected to the solid addition container, one end of the first conveying pipe is connected to the solid conveyor and the other end is connected to the mixer; A liquid adding assembly, comprising a liquid conveyor and a second conveying pipe, wherein one end of the second conveying pipe is connected to the liquid conveyor and the other end is connected to the mixer; as well as The sand mixing device is connected to a third delivery pipe, and one end of the third delivery pipe away from the sand mixing device is connected to the mixer.

2. The feeding system according to claim 1, It is characterized in that The liquid adding assembly further includes a pressure sensor, which is connected to the second delivery pipe to detect the pressure in the second delivery pipe.

3. The feeding system according to claim 1, It is characterized in that The solid addition assembly further includes a first shut-off valve, which is connected to the first delivery pipe and is used to control the communication state between the solid addition container and the mixer.

4. The feeding system according to claim 1, It is characterized in that The liquid adding assembly further comprises a second shut-off valve, the second shut-off valve is connected to the second delivery pipe, and the second shut-off valve is used to control the communication state between the liquid delivery device and the mixer.

5. The feeding system according to claim 1, It is characterized in that The third delivery pipe is connected to a third shut-off valve, and the third shut-off valve is used to control the connection state between the mixer and the sand mixing device.

6. The feeding system according to claim 1, It is characterized in that At least two sand mixing devices are provided, and at least two of the sand mixing devices are connected to the mixer through the third conveying pipe.

7. The feeding system according to claim 6, It is characterized in that At least two third conveying pipes are provided, and at least two third conveying pipes correspond one-to-one to at least two sand mixing devices; or, at least two discharge ports are provided on the third conveying pipe, and at least two discharge ports correspond one-to-one to at least two sand mixing devices.

8. The feeding system according to claim 1 or 6, It is characterized in that At least two groups of the solid addition components are provided, and the first conveying pipes of at least two groups of the solid addition components are connected to the mixer.

9. The feeding system according to claim 1 or 6, It is characterized in that At least two groups of the solid adding components are provided, and at least two groups of the mixers are provided. The at least two groups of the solid adding components correspond to the at least two groups of the mixers one by one, and the mixers are connected to the sand mixing equipment through a third conveying pipe.

10. The feeding system according to claim 9, It is characterized in that There are at least two third conveying pipes, and at least two of the third conveying pipes correspond one-to-one to at least two of the mixers; or, the third conveying pipe is provided with at least two feed ports, and at least two of the feed ports correspond one-to-one to at least two of the mixers.

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