Novel resin sand production line for oil field

Abstract

The utility model provides a novel resin sand production line for an oil field, which belongs to the technical field of resin sand production and comprises a crude sand preheating unit, a sand mixing unit, a cooling and screening unit, a crushing unit, a collecting unit and a control unit. The crude sand preheating unit comprises a first bucket elevator, a first sand bin, a permanent magnet separator and a three-return-stroke roller heating furnace and is used for conveying and preheating raw materials; the sand mixing unit comprises a sand mixer and is used for uniformly mixing resin sand raw materials; the cooling and screening unit comprises a drying and conveying mechanism and a long cooling screen and is used for cooling the resin sand subjected to heat treatment and screening impurities; the crushing unit comprises a crushing mechanism and is used for crushing resin sand; the collecting unit comprises a second bucket elevator, a rotary vibration screen and a second sand bin and is used for collecting and storing the obtained resin sand; the control unit comprises a master control cabinet used for controlling operation of equipment of the whole production line. The technical problems that in the prior art, resin sand is low in production efficiency, impurities are prone to being mixed and the like are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of resin sand production, in particular to a new resin sand production line for oil fields. Background Art

[0002] Resin sand is also called resin pre-coated sand or coated sand. It is made of quartz sand, ceramsite or other proppants and resin and other auxiliary materials through physical and chemical reactions. Its processing and manufacturing process is: coating one or more layers of resin film with an average thickness of several microns to more than ten microns on the surface of the proppant, which is called resin (pre) coating or resin coating.

[0003] At present, resin sand coating is mostly carried out in two ways, one is hot coating and the other is cold coating. Cold coating is to coat the resin directly on the surface of the raw sand at room temperature. After various additives are volatilized, the agglomerated resin sand is crushed with a crusher to obtain finished resin sand. The cold coating process is relatively simple, but in the process of crushing the resin sand, part of the resin film will be knocked off by the high-speed rotating crushing hammer, which affects the quality of the resin sand. In order to make up for the defects, the resin ratio is often increased to offset this destructive effect, which increases the material cost; hot coating first heats the raw sand, and then mixes it with resin and additive materials for coating. The heat of the raw sand is used to make other additives evaporate quickly, and the resin quickly adheres to the surface of the raw sand. In the stirring of high-power sand mixing equipment, the resin sand cannot agglomerate, and the formed resin film is smooth and uniform. Compared with the resin sand prepared by cold coating, the resin coating rate, compressive strength and permeability of the resin sand prepared by hot coating are better than those of cold coating.

[0004] In addition, in the process of preparing resin sand, the existing production line cannot mix the raw sand and other chemical agents evenly due to the different densities. In addition, the mixing process easily causes dust to fly, polluting the environment and damaging the health of workers, thereby reducing the production efficiency of resin sand. In addition, the obtained resin sand is easily mixed with impurities. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a new resin sand production line for oil fields to solve the technical problems of low resin sand production efficiency and easy mixing with impurities in the prior art.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] A new resin sand production line for oil fields, comprising:

[0008] Raw sand preheating unit, used to transport and preheat raw materials;

[0009] Sand mixing unit, used to mix resin sand raw materials uniformly;

[0010] A cooling and screening unit is used to cool the resin sand raw material after heat treatment and screen out impurities in the resin sand raw material;

[0011] Crushing unit, used for crushing resin sand raw materials;

[0012] A collecting unit, used for collecting and storing the obtained resin sand;

[0013] Control unit, used to control the operation of equipment in the resin sand production line.

[0014] Preferably, the raw sand preheating unit includes a first bucket elevator, a sand storage part and a three-pass roller heating furnace, the discharge port of the first bucket elevator is communicated with the feed port of the sand storage part, and the three-pass roller heating furnace is arranged at the discharge port of the sand storage part.

[0015] Preferably, the sand storage section includes a first sand storage and a first weighing scale, the first weighing scale is arranged below the interior of the first sand storage, a discharge port of the first sand storage is arranged below the first weighing scale, and a permanent magnetic separator is arranged below the discharge port of the first sand storage.

[0016] Preferably, the feed port of the permanent magnetic separator is communicated with the discharge port of the first sand storage, and is used to absorb the iron impurities mixed in the resin sand.

[0017] Preferably, the discharge port of the permanent magnetic separator is communicated with a sand mixing unit, and the sand mixing unit includes a sand mixer, and the feed port of the sand mixer is communicated with the discharge port of the permanent magnetic separator.

[0018] Preferably, the cooling unit is provided at the discharge port of the sand mixer, and the cooling unit includes a drying conveying mechanism and a long cooling screen. The drying conveying mechanism is composed of symmetrically arranged driving rollers and a conveyor belt attached to the outer surface of the driving rollers. The long cooling screen is provided at the lower side of the drying conveying mechanism, and the setting height of the long cooling screen is less than the setting height of the drying conveying mechanism.

[0019] Preferably, the crushing unit is arranged at the position of the feed opening on one side of the long cooling screen, and the crushing unit includes a crushing mechanism, the feed opening of the crushing mechanism corresponds to the feed opening of the long cooling screen, and the collecting unit is arranged on one side of the discharge opening of the crushing mechanism.

[0020] Preferably, the collecting unit includes a second bucket elevator, a rotary vibrating screen and a second sand bin, the feed port of the second bucket elevator is arranged on one side of the discharge port of the crushing mechanism, the rotary vibrating screen is arranged at the upper discharge port of the second bucket elevator, and the second sand bin is arranged below the discharge port of the rotary vibrating screen.

[0021] Preferably, a second weighing scale is provided at the bottom of the discharge port of the second sand storage, the second sand storage has the same structure as the first sand storage, and the first weighing scale and the second weighing scale are used to weigh the resin sand.

[0022] Preferably, the control unit is also provided on one side of the second sand storage, and the control unit includes a main control cabinet, and the main control cabinet is used to control the operation of the entire production line equipment.

[0023] According to the specific embodiments provided by the utility model, the utility model discloses the following technical effects:

[0024] The utility model provides a new resin sand production line for oil fields, which consists of a raw sand preheating unit, a sand mixing unit, a cooling and screening unit, a crushing unit, a collecting unit and a control unit. The raw sand preheating unit includes a first bucket elevator, a first sand storage, a permanent magnetic separator and a three-pass drum heating furnace for conveying and preheating raw materials; the sand mixing unit includes a sand mixer for mixing the resin sand raw materials uniformly; the cooling and screening unit includes a drying and conveying mechanism and a long cooling screen for cooling the resin sand after heat treatment and screening impurities; the crushing unit includes a crushing mechanism for crushing resin sand; the collecting unit includes a second bucket elevator, a rotary vibrating screen and a second sand storage for collecting and storing the obtained resin sand; the control unit includes a main control cabinet for controlling the operation of the entire production line equipment. Thus, the technical problems of low production efficiency and easy mixing of impurities in the prior art of resin sand are solved, and in the production process of resin sand, raw sand and other chemical agents can be mixed in the sand storage, and the raw sand and chemical agents are mixed uniformly by the sand mixer, which will not cause dust flying, environmental pollution and other problems, thereby ensuring the health of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0026] Figure 1 This is a schematic diagram of the structure of a new resin sand production line for oil fields according to the utility model;

[0027] Description of reference numerals:

[0028] 1-the first bucket elevator, 2-the first sand storage, 3-the first weighing scale, 4-permanent magnetic separator, 5-three-return drum heating furnace, 6-sand mixer, 7-drying and conveying mechanism, 8-long cooling screen, 9-crushing mechanism, 10-the second bucket elevator, 11-vibrating screen, 12-the second sand storage, 13-the second weighing scale, 14-the main control cabinet. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0031] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] Embodiment 1

[0033] like Figure 1 As shown, the utility model provides a new resin sand production line for oil fields, comprising:

[0034] Raw sand preheating unit, used to transport and preheat raw materials;

[0035] Sand mixing unit, used to mix resin sand raw materials uniformly;

[0036] A cooling and screening unit is used to cool the resin sand raw material after heat treatment and screen out impurities in the resin sand raw material;

[0037] Crushing unit, used for crushing resin sand raw materials;

[0038] A collecting unit, used for collecting and storing the obtained resin sand;

[0039] Control unit, used to control the operation of equipment in the resin sand production line.

[0040] In this embodiment, the raw sand preheating unit includes a first bucket elevator 1, a sand storage part and a three-pass roller heating furnace 5. The discharge port of the first bucket elevator 1 is connected to the feed port of the sand storage part. A three-pass roller heating furnace 5 is arranged at the discharge port of the sand storage part for heating the resin sand raw material.

[0041] Among them, the sand material storage part includes a first sand bin 2 and a first weighing scale 3. The first weighing scale 3 is arranged at the lower part of the first sand bin 2 for storing and weighing the resin sand raw material. The discharge port of the first sand bin 2 is arranged below the first weighing scale 3. A permanent magnetic separator 4 is arranged below the discharge port of the first sand bin 2. The feed port of the permanent magnetic separator 4 is connected to the discharge port of the first sand bin 2, and is used for absorbing the iron impurities mixed in the resin sand. In addition, the discharge port of the permanent magnetic separator 4 is connected to a sand mixing unit, which includes a sand mixer 6. The feed port of the sand mixer 6 is connected to the discharge port of the permanent magnetic separator 4, and is used to evenly mix the resin sand raw materials. A cooling unit is provided at the discharge port of the sand mixer 6. The cooling unit includes a drying and conveying mechanism 7 and a long cooling screen 8. The drying and conveying mechanism 7 is composed of symmetrically arranged transmission rollers and a conveyor belt attached to the outer surface of the transmission rollers. A long cooling screen 8 is provided at the lower side of the drying and conveying mechanism 7. The setting height of the long cooling screen 8 is less than the setting height of the drying and conveying mechanism 7, and is used to cool and screen large-size resin sand particles.

[0042] In addition, a crushing unit is provided at the position of the discharge port on one side of the long cooling screen 8. The crushing unit includes a crushing mechanism 9, which is used to crush the resin sand to keep the particle size of the resin sand consistent. The feed port of the crushing mechanism 9 corresponds to the discharge port of the long cooling screen 8, and a collecting unit is provided on one side of the discharge port of the crushing mechanism 9. The collecting unit includes a second bucket elevator 10, a rotary vibrating screen 11 and a second sand storehouse 12. The feed port of the second bucket elevator 10 is provided on one side of the discharge port of the crushing mechanism 9. The rotary vibrating screen 11 is provided at the upper discharge port of the second bucket elevator 10, and the second sand storehouse 12 is provided below the discharge port of the rotary vibrating screen 11. A second weighing scale 13 is provided at the bottom of the discharge port of the second sand storehouse 12. The second sand storehouse 12 has the same structure as the first sand storehouse 2. The first weighing scale 3 and the second weighing scale 13 are used to weigh the weight of the resin sand.

[0043] In this embodiment, a control unit is also provided on one side of the second sand storage 12, and the control unit includes a main control cabinet 14, and the main control cabinet 14 is used to control the operation of the entire production line equipment. Here, the connection between the main control cabinet 14 and each device is an electrical connection, which belongs to the prior art and will not be described in detail here.

[0044] Working principle: When in use, the resin sand raw material is transported to the first sand warehouse 2 by the first bucket elevator 1. After the required weight of the raw material is weighed by the first measuring scale 3, the discharge port of the first sand warehouse 2 is opened and the raw material falls into the permanent magnetic separator 4. At the same time, the three-return drum heating furnace 5 and the sand mixer 6 are started to mix the resin sand raw material evenly to obtain resin sand. The resin sand is then cooled and screened by the drying and conveying mechanism 7 and the long cooling screen 8. The resin sand then enters the crushing mechanism 9 through the long cooling screen 8 for crushing. The crushed resin sand is transported to the rotary vibrating screen 11 by the second bucket elevator 10. After the resin sand is screened for the second time, it is transported to the second sand warehouse 12 for storage and standby. According to production needs, it can be weighed by the second measuring scale 13 to obtain the resin sand of the required weight for production. In this process, the production of resin sand is controlled by the main control cabinet 14 to control the operation of the equipment. How the main control cabinet 14 controls the operation of the equipment belongs to the prior art and is not limited here.

[0045] Therefore, the utility model adopts the above-mentioned new resin sand production line for oil fields, which solves the technical problems of low resin sand production efficiency and easy mixing with impurities in the prior art. In the production process of resin sand, raw sand and other chemical agents can be mixed in the sand warehouse, and the raw sand and chemical agents are mixed evenly through a sand mixer, which will not cause dust flying, environmental pollution and other problems, thereby ensuring the health of workers.

[0046] This article uses specific examples to illustrate the principles and implementation methods of the utility model. The above examples are only used to help understand the method and core ideas of the utility model. At the same time, for those skilled in the art, according to the ideas of the utility model, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the utility model.

Claims

1. A new resin sand production line for oil fields, characterized in that: include: Raw sand preheating unit, used to transport and preheat raw materials; Sand mixing unit, used to mix resin sand raw materials uniformly; A cooling and screening unit is used to cool the resin sand raw material after heat treatment and screen out impurities in the resin sand raw material; Crushing unit, used for crushing resin sand raw materials; A collecting unit, used for collecting and storing the obtained resin sand; Control unit, used to control the operation of equipment in the resin sand production line.

2. A new resin sand production line for oil fields according to claim 1, characterized in that: The raw sand preheating unit includes a first bucket elevator, a sand storage part and a three-pass roller heating furnace. The discharge port of the first bucket elevator is connected to the feed port of the sand storage part, and the three-pass roller heating furnace is arranged at the discharge port of the sand storage part.

3. A new resin sand production line for oil fields according to claim 2, characterized in that: The sand material storage section includes a first sand storage and a first weighing scale. The first weighing scale is arranged below the interior of the first sand storage, a discharge port of the first sand storage is arranged below the first weighing scale, and a permanent magnetic separator is arranged below the discharge port of the first sand storage.

4. A new resin sand production line for oil fields according to claim 3, characterized in that: The feed port of the permanent magnetic separator is communicated with the discharge port of the first sand storehouse and is used for absorbing the iron impurities mixed in the resin sand.

5. A new resin sand production line for oil fields according to claim 4, characterized in that: The discharge port of the permanent magnetic separator is communicated with a sand mixing unit, and the sand mixing unit includes a sand mixer. The feed port of the sand mixer is communicated with the discharge port of the permanent magnetic separator.

6. A new resin sand production line for oil fields according to claim 5, characterized in that: The cooling screening unit is arranged at the discharge port of the sand mixer, and the cooling screening unit includes a drying conveying mechanism and a long cooling screen. The drying conveying mechanism is composed of symmetrically arranged driving rollers and a conveyor belt attached to the outer surface of the driving rollers. The long cooling screen is arranged at the lower side of the drying conveying mechanism, and the setting height of the long cooling screen is less than the setting height of the drying conveying mechanism.

7. A new resin sand production line for oil fields according to claim 6, characterized in that: The crushing unit is arranged at the position of the feed opening on one side of the long cooling screen, and the crushing unit includes a crushing mechanism, the feed opening of the crushing mechanism corresponds to the feed opening of the long cooling screen, and the collecting unit is arranged on one side of the discharge opening of the crushing mechanism.

8. The new resin sand production line for oil fields according to claim 7 is characterized in that: The collecting unit includes a second bucket elevator, a rotary vibrating screen and a second sand bin. The feed port of the second bucket elevator is arranged on one side of the discharge port of the crushing mechanism. The rotary vibrating screen is arranged at the upper discharge port of the second bucket elevator, and the second sand bin is arranged below the discharge port of the rotary vibrating screen.

9. A new resin sand production line for oil fields according to claim 8, characterized in that: A second weighing scale is provided at the bottom of the discharge port of the second sand storage. The second sand storage has the same structure as the first sand storage. The first weighing scale and the second weighing scale are used to weigh the resin sand.

10. A new resin sand production line for oil fields according to claim 9, characterized in that: The control unit is also provided on one side of the second sand storage, and the control unit includes a main control cabinet, and the main control cabinet is used to control the operation of the entire production line equipment.

Images