A solid drag reducer drying device for oil well cement

Abstract

This invention provides a drying device for solid drag-reducing agents used in oil well cement. It includes two sets of drying rollers rotatably mounted within a working housing. A drive mechanism for rotating the two sets of drying rollers is located on one side of each roller. A feeding hopper is installed at the center of the top of the working housing. Discharge shovels are mounted on both sides of the top of the working housing via a reciprocating mechanism. The two sets of discharge shovels abut against the outer walls of the two sets of drying rollers. Collection boxes are slidably mounted on both side walls of the working housing. The reciprocating mechanism includes a half-gear. This invention drives the discharge shovels to reciprocate along the surface of the drying rollers via the reciprocating mechanism (half-gear, pusher frame), which can promptly scrape off the dried material, preventing material from sticking to the roller surface. This solves the problem of manual cleaning required by traditional stationary shovels, ensuring the continuity and stability of the drying process and improving operational convenience. The collection boxes, through a sliding connection design between the mounting groove and the mounting block, combined with a handle on the side, allow for quick disassembly and material removal.

Description

Technical Field

[0001] This utility model belongs to the technical field of drying equipment, and more specifically, it relates to a drying device for solid drag-reducing agents for oil well cement. Background Technology

[0002] In the current field of drying solid drag-reducing agents for oil well cement, drum dryers are commonly used as the main production tool. These devices use the rotation of the drum to bring the material into contact with the drying medium, and use heat conduction or convection to achieve dehydration and drying of the material. They have advantages such as relatively simple structure and low operating cost, and are therefore widely used in the industry. However, traditional drum dryers have obvious limitations: their discharge process usually relies on stationary shovels to assist in unloading. However, due to their own viscosity or residual heat, the dried solid drag-reducing agent is easy to adhere to the surface of the shovel and cannot be naturally removed with the rotation of the drum. This means that after the operation, it is necessary to manually clean the residual material on the shovel. This not only increases the operating burden, but may also affect the continuity of subsequent drying operations and the purity of the material if the cleaning is not timely, thus limiting the improvement of production efficiency.

[0003] Therefore, in view of this, we have studied and improved the existing structure and its shortcomings, and provided a drying device for solid drag reducing agent for oil well cement, in order to achieve a more practical purpose. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a drying device for solid drag-reducing agents used in oil well cement, which is achieved by the following specific technical means:

[0005] A drying device for solid drag reducing agent for oil well cement includes two sets of drying rollers rotatably installed inside a working housing. A drive mechanism for driving the two sets of drying rollers to rotate is provided on one side of the drying rollers. A feeding hopper is installed at the middle of the top of the working housing. Discharge shovels are installed on both sides of the top of the working housing via a reciprocating mechanism. The two sets of discharge shovels abut against the outer walls of the two sets of drying rollers. Collection boxes are slidably installed on both side walls of the working housing. The reciprocating mechanism includes a half gear. A push frame is meshed on the outer wall of the half gear. One end of the push frame is fixedly connected to one side of the discharge shovel. An installation frame is slidably installed on one end of the push frame. The installation frame is installed on the top of the working housing.

[0006] Preferably, the drive mechanism includes a drive shaft mounted on one end of two sets of drying rollers. Both sets of drive shafts are fitted with belts via pulleys. One end of each set of belts is fitted with a connecting shaft. One end of each set of connecting shafts is rotatably mounted on the side wall of the working housing. A transmission gear is fixedly fitted on the outer wall of one end of each set of connecting shafts. The two sets of transmission gears mesh with each other. One end of one set of transmission gears is connected to a motor.

[0007] Preferably, four sets of brackets are installed at the top of the working housing, with each set of brackets located on one side in pairs, and each set of brackets having a semi-circular cross-section that matches the outer wall of the drive shaft.

[0008] Preferably, the outer surface of the drying roller is provided with an anti-stick coating, which is a polytetrafluoroethylene coating.

[0009] Preferably, the collection box has two sets of mounting slots on the side opposite to the working shell, and mounting blocks matching the mounting slots are installed on both side walls of the working shell. The working shell and the collection box are slidably connected through the mounting blocks.

[0010] Preferably, the collection box has a handle on the side.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. This utility model uses a reciprocating mechanism (half-gear, pusher frame) to drive the unloading shovel to reciprocate along the surface of the drying roller, which can promptly scrape off the dried material and prevent the material from sticking to the roller surface. This solves the problem of manual cleaning required by traditional stationary shovels, ensuring the continuity and stability of the drying process and improving ease of operation. The collection box uses a sliding connection design between the mounting groove and the mounting block, along with a handle on the side, to achieve quick disassembly and material removal. The support design of the bracket (semi-circular cross-section) for the drive shaft reduces the shaking of the drive mechanism during operation, improves the overall stability of the equipment, and reduces the maintenance frequency.

[0013] 2. This utility model drives two sets of drying rollers to rotate synchronously through a drive mechanism (drive shaft, belt, drive gear), so that the material is evenly distributed on the roller surface and fully contacts the drying environment, effectively improving drying efficiency and uniformity, and enhancing anti-stick performance: the polytetrafluoroethylene (PTFE) anti-stick coating on the outer surface of the drying roller significantly reduces material adhesion, reduces cleaning difficulty, extends equipment service life, and at the same time avoids material residue contamination and improves the purity of the dried material. Attached Figure Description

[0014] Figure 1 This is a three-dimensional schematic diagram of the utility model. Figure 1 .

[0015] Figure 2 This is a three-dimensional schematic diagram of the utility model. Figure 2 .

[0016] Figure 3 This is a top view of the present invention.

[0017] Figure 4 This is a utility model Figure 2 Enlarged schematic diagram of structure A in the middle.

[0018] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0019] 1. Drying roller; 2. Working housing; 201. Bracket; 3. Feeding hopper; 4. Drive mechanism; 401. Drive shaft; 402. Belt; 403. Drive gear; 5. Unloading shovel; 6. Reciprocating mechanism; 601. Half gear; 602. Push frame; 603. Mounting frame; 7. Collection box; 8. Handle; 9. Mounting slot; 10. Mounting block. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Example:

[0022] As attached Figure 1 To be continued Figure 4 As shown:

[0023] This utility model provides a drying device for solid drag reducing agent for oil well cement, including two sets of drying rollers 1 rotatably installed inside the working shell 2. A drive mechanism 4 for driving the two sets of drying rollers 1 to rotate is provided on one side of the drying rollers 1. A feeding hopper 3 is installed at the middle of the top of the working shell 2. A discharge shovel 5 is installed on both sides of the top of the working shell 2 through a reciprocating mechanism 6. The two sets of discharge shovels 5 are abutted against the outer walls of the two sets of drying rollers 1. A collection box 7 is slidably installed on both side walls of the working shell 2. The reciprocating mechanism 6 includes a half gear 601. A push frame 602 is meshed on the outer wall of the half gear 601. One end of the push frame 602 is fixedly connected to one side of the discharge shovel 5. An installation frame 603 is slidably installed on one end of the push frame 602. The installation frame 603 is installed on the top of the working shell 2.

[0024] The drive mechanism 4 includes a drive shaft 401 installed at one end of each of the two sets of drying rollers 1. Each set of drive shafts 401 is fitted with a belt 402 via pulleys. Each set of belts 402 has a connecting shaft fitted at one end and the other end. Each set of connecting shafts has one end rotatably mounted on the side wall of the working housing 2. Each set of connecting shafts has a transmission gear 403 fixedly fitted on the outer wall of one end. The two sets of transmission gears 403 mesh with each other. One end of one set of transmission gears 403 is connected to a motor. Through the linkage design of the drive shafts 401, belts 402, connecting shafts, and transmission gears 403, and in conjunction with the motor drive, the two sets of drying rollers 1 can rotate synchronously in opposite directions, ensuring that the material is evenly distributed on the roller surface and fully contacts the drying environment, thus improving drying efficiency and uniformity. The meshing structure of the transmission gears 403 also ensures the stability of power transmission and reduces energy loss during the drive process.

[0025] The top of the working housing 2 is equipped with four sets of brackets 201. The four sets of brackets 201 are located on one side in pairs, and each set has a semi-circular cross section. They match the outer wall of the drive shaft 401. The four sets of semi-circular cross section brackets 201 at the top of the working housing 2 match the outer wall of the drive shaft 401, which can effectively support the drive shaft 401, reduce its shaking during rotation, reduce the vibration and noise of the drive mechanism 4 during operation, improve the overall stability of the equipment, and extend the service life of the drive shaft 401 and related components.

[0026] The outer surface of the drying roller 1 is provided with an anti-stick coating, which is a polytetrafluoroethylene (PTFE) coating. The PTFE anti-stick coating on the outer surface of the drying roller 1 has excellent non-stick properties, which can significantly reduce the adhesion and residue of solid drag-reducing agents on the roller surface after drying, and avoid material contamination; at the same time, it reduces the frequency of manual cleaning of the roller surface, and improves the continuity of drying operations and production efficiency.

[0027] The collection box 7 has two sets of mounting slots 9 on the side opposite to the working shell 2. The two side walls of the working shell 2 are equipped with mounting blocks 10 that match the mounting slots 9. The working shell 2 is slidably connected to the collection box 7 through the mounting blocks 10. The sliding connection design between the mounting slots 9 of the collection box 7 and the mounting blocks 10 of the working shell 2 allows the collection box 7 to be quickly disassembled or installed, making it easy to remove the material in time after drying. The structural connection is stable, preventing the collection box 7 from accidentally falling off during equipment operation and ensuring the reliability of material collection.

[0028] The collection box 7 is equipped with a handle 8 on its side. The handle 8 on the side of the collection box 7 provides a point of leverage for the operator, making it easier to grip and apply force, further improving the convenience of disassembling and installing the collection box 7, reducing operation time, and improving the efficiency of the production process.

[0029] The working principle of this embodiment is as follows: Material feeding and drying: Solid drag-reducing agent is fed into the working shell 2 through the feeding hopper 3 and falls onto the surface of two sets of rotating drying rollers 1. The driving mechanism 4 is driven by the motor to drive the transmission gear 403 → belt 402 → transmission shaft 401 to drive the two sets of drying rollers 1 to rotate synchronously in opposite directions, so that the material is evenly distributed on the roller surface and fully contacts the drying environment to complete the dehydration and drying process.

[0030] Automatic unloading: When the dried material adheres to the surface of the drying roller 1, the reciprocating mechanism 6 half gear 601 rotates → the push frame 602 slides along the mounting frame 603 → drives the unloading shovel 5 to reciprocate along the outer wall of the drying roller 1, scraping off the dried material in time and preventing the material from sticking to the roller surface.

[0031] Material collection: The scraped material falls from both sides of the drying roller 1 into the collection box 7 that is slidably installed on the side wall of the working shell 2. The collection box 7 cooperates with the mounting block 10 of the working shell 2 through the mounting groove 9, and the material can be quickly removed by the handle 8.

[0032] Auxiliary optimization design: The PTFE anti-stick coating on the outer surface of the drying roller 1 further reduces material adhesion; the semi-circular cross section of the bracket 201 at the top of the working housing 2 supports the drive shaft 401, which reduces the shaking of the drive mechanism 4 during operation and ensures stable operation of the equipment.

[0033] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A drying device for solid drag-reducing agents used in oil well cement, comprising two sets of drying rollers (1) rotatably mounted within a working housing (2), characterized in that: A drive mechanism (4) for driving the two sets of drying rollers (1) to rotate is provided on one side of the drying roller (1). A feeding hopper (3) is installed at the middle of the top of the working housing (2). A discharge shovel (5) is installed on both sides of the top of the working housing (2) through a reciprocating mechanism (6). The two sets of discharge shovels (5) are abutted against the outer walls of the two sets of drying rollers (1). A collection box (7) is slidably installed on both side walls of the working housing (2). The reciprocating mechanism (6) includes a half gear (601). A push frame (602) is meshed on the outer wall of the half gear (601). One end of the push frame (602) is fixedly connected to one side of the discharge shovel (5). A mounting frame (603) is slidably installed on one end of the push frame (602). The mounting frame (603) is installed on the top of the working housing (2).

2. The drying device for solid drag-reducing agents for oil well cement according to claim 1, characterized in that: The drive mechanism (4) includes a drive shaft (401) installed at one end of two sets of drying rollers (1). Both sets of drive shafts (401) are fitted with belts (402) through pulleys. One end of each set of belts (402) is fitted with a connecting shaft. One end of each set of connecting shafts is rotatably mounted on the side wall of the working housing (2). One end of each set of connecting shafts is fixedly fitted with a transmission gear (403). The two sets of transmission gears (403) mesh with each other. One end of one set of transmission gears (403) is connected to a motor.

3. The drying device for solid drag-reducing agents for oil well cement according to claim 2, characterized in that: The top of the working housing (2) is equipped with four sets of brackets (201). The four sets of brackets (201) are located on one side in pairs, and the cross-section of each set is semi-circular and matches the outer wall of the drive shaft (401).

4. The drying device for solid drag-reducing agents for oil well cement according to claim 1, characterized in that: The outer surface of the drying roller (1) is provided with an anti-stick coating, which is a polytetrafluoroethylene (PTFE) coating.

5. The drying device for solid drag-reducing agents for oil well cement according to claim 1, characterized in that: The collection box (7) has two sets of mounting slots (9) on the side opposite to the working shell (2). The two side walls of the working shell (2) are equipped with mounting blocks (10) that match the mounting slots (9). The working shell (2) is slidably connected to the collection box (7) through the mounting blocks (10).

6. The drying device for solid drag-reducing agents for oil well cement according to claim 1, characterized in that: The collection box (7) is provided with a handle (8) on its side.

Images