Fracturing sand mixing and conveying anti-blocking screw feeder

Abstract

The utility model discloses a kind of fracturing sand mixed conveying anti-blocking spiral feeder, belong to spiral feeder field, including chassis and support frame, support frame is equipped with spiral conveying pipe, and the lower end of spiral conveying pipe is equipped with driving motor, and spiral conveying pipe is equipped with hopper, and elastic support structure is connected between chassis and support frame, and the jacking structure that is in contact with support frame is equipped on chassis. Form vibration in the process of feeding by the elastic support structure and jacking structure set, vibration force acts on the material inside spiral conveying pipe, can play the role of dredging, avoid the situation that spiral conveying pipe appears blockage, guarantee the normal progress of feeding work, avoid the damage of related structure caused by jamming, cam is set in jacking structure, forms periodic jacking effect to movable plate, so that support frame, spiral conveying pipe intermittent vibration, improve the anti-blocking effect, corrugated pipe is used, can ensure the accuracy of feeding.

Description

Technical Field

[0001] This utility model relates to the field of screw feeders, and in particular to a screw feeder for preventing blockage during fracturing sand mixing and conveying. Background Technology

[0002] Fracturing sand is a high-purity quartz sand that has undergone fine processing. It features rounded particles, high compressive strength, strong resistance to breakage, and good chemical stability. It is widely used in hydraulic fracturing operations in the oil and gas industry as a fracturing proppant. During its manufacturing, fracturing sand requires the mixing of different raw materials, which are fed using a screw feeder.

[0003] When using a screw feeder, material enters the feeding pipe through the hopper, and the motor drives the screw feeder to deliver the material after starting. However, existing screw feeders lack an anti-clogging structure, making them prone to clogging during the feeding process. This can cause the screw feeder to jam. Even when the screw feeder is jammed, the motor continues to run, which can easily damage both the motor and the screw feeder. Furthermore, clogging can disrupt the normal feeding process and affect the fracturing sand production rate. Utility Model Content

[0004] The main purpose of this invention is to provide a clogging-resistant spiral feeder for fracturing sand mixing and conveying, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A fracturing sand mixing and conveying anti-clogging spiral feeder includes a base frame and a support frame. A spiral conveying pipe is installed on the support frame, and a drive motor is provided at the lower end of the spiral conveying pipe. A hopper is provided on the spiral conveying pipe. An elastic support structure is connected between the base frame and the support frame, and a lifting structure that contacts the support frame is provided on the base frame.

[0007] Preferably, the lower end of the base frame is provided with casters, and the support frame is fixedly connected to the spiral conveying pipe.

[0008] Preferably, the spiral conveying pipe is provided with a spiral feeding rod inside, and the end of the spiral feeding rod is connected to the drive motor.

[0009] Preferably, the upper end of the spiral conveying pipe is provided with a feeding pipe, and the end of the feeding pipe is equipped with a corrugated pipe.

[0010] Preferably, the elastic support structure includes a first connecting column, a second connecting column, and a support spring. The first connecting column is fixed on the base frame, the second connecting column is fixed on the lower end of the support frame, and the two ends of the support spring are respectively sleeved on the first connecting column and the second connecting column, with the two ends of the support spring abutting against the base frame and the support frame respectively.

[0011] Preferably, the lifting structure includes a base plate, a support seat, a movable plate, a reduction motor, a rotating shaft, a cam, and a connecting sleeve. The base plate and the support seat are fixedly connected, and the base plate is mounted on a base frame. The movable plate is fixed on the support frame. The reduction motor is mounted on the support seat. The rotating shaft is connected to the reduction motor. The cam and the connecting sleeve are fixedly connected, and the cam and the connecting sleeve are sleeved on the rotating shaft.

[0012] Compared with the prior art, this utility model has the following beneficial effects: This anti-clogging spiral feeder for fracturing sand mixing and conveying, through the setting of an elastic support structure and a lifting structure, provides a vibration effect during the feeding process, causing the support frame to move along with the spiral conveying pipe, hopper, and drive motor. Under the action of the elastic support structure, the spiral conveying pipe vibrates, and the vibration force acts on the material inside the spiral conveying pipe, which can play a role in clearing blockage and preventing the spiral conveying pipe from becoming blocked, thus ensuring the normal operation of the feeding work. At the same time, it protects the related structures and prevents damage caused by blockage and jamming. The lifting structure is equipped with cams, which form a periodic lifting effect on the movable plate, causing the support frame and spiral conveying pipe to vibrate intermittently, improving the anti-clogging effect. The cams are installed through connecting sleeves, which can quickly increase or decrease the number. The use of corrugated pipes can ensure the accuracy of feeding. Attached Figure Description

[0013] Fig. 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Fig. 2 This is a schematic diagram of the elastic support structure of this utility model;

[0015] Fig. 3 This is a schematic diagram of the lifting structure of this utility model.

[0016] In the diagram: 1. Base frame; 2. Support frame; 3. Spiral conveyor pipe; 4. Drive motor; 5. Hopper; 6. Elastic support structure; 601. First connecting column; 602. Second connecting column; 603. Support spring; 7. Lifting structure; 701. Base plate; 702. Support seat; 703. Movable plate; 704. Gear motor; 705. Rotating shaft; 706. Cam; 707. Connecting sleeve; 8. Feed pipe; 9. Corrugated pipe; 10. Casters. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] like Figs. 1-3 As shown, a fracturing sand mixing and conveying anti-clogging spiral feeder includes a base frame 1 and a support frame 2. A spiral conveying pipe 3 is installed on the support frame 2, and a drive motor 4 is provided at the lower end of the spiral conveying pipe 3. A hopper 5 is provided on the spiral conveying pipe 3. An elastic support structure 6 connects the base frame 1 and the support frame 2, and a lifting structure 7 is provided on the base frame 1 that contacts the support frame 2. A caster wheel 10 is provided at the lower end of the base frame 1, and the support frame 2 is fixedly connected to the spiral conveying pipe 3. A spiral feeding rod is provided inside the spiral conveying pipe 3, and the end of the spiral feeding rod is connected to the drive motor 4. A discharge pipe 8 is provided at the upper end of the spiral conveying pipe 3, and a corrugated pipe 9 is installed at the end of the discharge pipe 8.

[0019] In the preparation of fracturing sand, the screw feeder is moved to a suitable position via casters 10 on the base frame 1. The corrugated pipe 9 at the end of the feed pipe 8 is connected to the mixing equipment. After starting the device, the raw material feeding begins. During feeding, the raw material is put into the hopper 5 and then enters the screw conveyor pipe 3. The drive motor 4 rotates the screw feeder to transport the raw material. The raw material enters the corrugated pipe 9 from the feed pipe 8 and finally enters the mixing equipment for mixing. During the feeding process, the lifting structure 7 operates the intermittent lifting support frame 2. Under the action of the elastic support structure 6, the support frame 2 vibrates the screw conveyor pipe 3, thereby applying the vibration to the raw material inside the screw conveyor pipe 3, which can prevent clogging.

[0020] According to the above implementation scheme, the elastic support structure 6 includes a first connecting column 601, a second connecting column 602 and a support spring 603. The first connecting column 601 is fixed on the base frame 1, the second connecting column 602 is fixed on the lower end of the support frame 2, and the two ends of the support spring 603 are respectively sleeved on the first connecting column 601 and the second connecting column 602, and the two ends of the support spring 603 respectively abut against the base frame 1 and the support frame 2.

[0021] After the lifting structure 7 lifts the support frame 2 during the operating gap, the support frame 2 vibrates through the support springs 603 on the first connecting column 601 and the second connecting column 602, thereby causing the spiral conveying pipe 3 to vibrate, which can play a role in preventing blockage. The two connecting columns ensure the stability of the support springs 603.

[0022] According to the above implementation scheme, the lifting structure 7 includes a base plate 701, a support base 702, a movable plate 703, a reduction motor 704, a rotating shaft 705, a cam 706, and a connecting sleeve 707. The base plate 701 and the support base 702 are fixedly connected, and the base plate 701 is mounted on the base frame 1. The movable plate 703 is fixed on the support frame 2. The reduction motor 704 is mounted on the support base 702. The rotating shaft 705 is connected to the reduction motor 704. The cam 706 and the connecting sleeve 707 are fixedly connected, and the cam 706 and the connecting sleeve 707 are sleeved on the rotating shaft 705.

[0023] After the geared motor 704 on the support base 702 is started, the rotating shaft 705 rotates slowly, thereby rotating the cam 706. When the part of the cam 706 furthest from the rotating shaft 705 rotates and contacts the movable plate 703, the movable plate 703 rises. When the part of the cam 706 furthest from the rotating shaft 705 rotates away from the movable plate 703, the movable plate 703 falls. Together with the elastic support structure 6, a buffer is formed. During the rotation of the cam 706, a large part of the cam 706 does not contact the movable plate 703, which can form an intermittent lifting effect, ensuring that vibration is not affected. When needed, the number of cams 706 can be increased or decreased using screws and connecting sleeves 707, which provides high flexibility and adaptability.

[0024] It should be noted that, through the set elastic support structure 6 and lifting structure 7, during the feeding process, the lifting structure 7 provides a vibration effect, causing the support frame 2 to move along with the spiral conveying pipe 3, hopper 5, and drive motor 4. Under the action of the elastic support structure 6, the spiral conveying pipe 3 vibrates, and the vibration force acts on the material inside the spiral conveying pipe 3, which can play a role in clearing blockage and preventing the spiral conveying pipe 3 from becoming blocked, thus ensuring the normal operation of the feeding work. At the same time, it protects the related structures and prevents damage caused by blockage and jamming. The lifting structure 7 is equipped with a cam 706, which forms a periodic lifting effect on the movable plate 703, causing the support frame 2 and spiral conveying pipe 3 to vibrate intermittently, improving the anti-blocking effect. The cam 706 is installed through the connecting sleeve 707, which can quickly increase or decrease the number of cams. The use of a corrugated pipe 9 allows the corrugated pipe 9 to deform during the vibration of the spiral conveying pipe 3 without affecting the normal connection with the mixing equipment, thus ensuring the accuracy of feeding.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A clogging-resistant screw feeder for fracturing sand mixing and conveying, comprising a base frame (1) and a support frame (2), wherein a screw conveying pipe (3) is installed on the support frame (2), and a drive motor (4) is provided at the lower end of the screw conveying pipe (3), and a hopper (5) is provided on the screw conveying pipe (3), characterized in that: An elastic support structure (6) is connected between the base frame (1) and the support frame (2), and a lifting structure (7) is provided on the base frame (1) that is in contact with the support frame (2).

2. The anti-clogging screw feeder for fracturing sand mixing and conveying according to claim 1, characterized in that: The lower end of the base frame (1) is provided with casters (10), and the support frame (2) is fixedly connected to the spiral conveying pipe (3).

3. The anti-clogging screw feeder for fracturing sand mixing and conveying according to claim 2, characterized in that: The spiral conveying pipe (3) is equipped with a spiral feeding rod inside, and the end of the spiral feeding rod is connected to the drive motor (4).

4. The anti-clogging screw feeder for fracturing sand mixing and conveying according to claim 3, characterized in that: The upper end of the spiral conveying pipe (3) is provided with a feeding pipe (8), and the end of the feeding pipe (8) is provided with a corrugated pipe (9).

5. The anti-clogging screw feeder for fracturing sand mixing and conveying according to claim 4, characterized in that: The elastic support structure (6) includes a first connecting column (601), a second connecting column (602) and a support spring (603). The first connecting column (601) is fixed on the base frame (1), the second connecting column (602) is fixed on the lower end of the support frame (2), and the two ends of the support spring (603) are respectively sleeved on the first connecting column (601) and the second connecting column (602), and the two ends of the support spring (603) respectively abut against the base frame (1) and the support frame (2).

6. The anti-clogging screw feeder for fracturing sand mixing and conveying according to claim 5, characterized in that: The lifting structure (7) includes a base plate (701), a support base (702), a movable plate (703), a reduction motor (704), a rotating shaft (705), a cam (706), and a connecting sleeve (707). The base plate (701) and the support base (702) are fixedly connected, and the base plate (701) is mounted on the base frame (1). The movable plate (703) is fixed on the support frame (2). The reduction motor (704) is mounted on the support base (702). The rotating shaft (705) is connected to the reduction motor (704). The cam (706) and the connecting sleeve (707) are fixedly connected, and the cam (706) and the connecting sleeve (707) are sleeved on the rotating shaft (705).

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