CN216173969U

CN216173969U - Rotary screening machine

Info

Publication number: CN216173969U
Application number: CN202122395715.XU
Authority: CN
Inventors: 杨玉
Original assignee: Ningxia Ruiyuan Oil Fracturing Proppant Co ltd
Current assignee: Ningxia Ruiyuan Oil Fracturing Proppant Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-04-05
Anticipated expiration: 2031-09-30

Abstract

The utility model provides a rotary screening machine, which comprises: columniform roll screen for support the roll support of roll screen gyration, set up the branch sand hopper below the roll screen, be located the slope alignment jig between branch sand hopper and the roll support, be used for driving the gyration driving motor of roll screen gyration, wherein, columniform roll screen includes: the sand classifying and screening device comprises a first-stage sieve, a second-stage sieve and a third-stage sieve which are arranged from a feeding end to a discharging end, wherein the mesh number of the first-stage sieve is the largest, the mesh number of the third-stage sieve is the smallest, the mesh number of the second-stage sieve is between the first-stage sieve and the third-stage sieve, a rotating partition plate is arranged between the first-stage sieve and the second-stage sieve and between the second-stage sieve and the third-stage sieve, and the diameter of the rotating partition plate is slightly smaller than the inner diameter of a rolling sieve, so that the sand classifying and screening device is mainly used for classifying and screening sand into industrial sand with at least three granularities.

Description

Rotary screening machine

Technical Field

The utility model relates to a screening machine, in particular to a rotary screening machine.

Background

The horizontal vibration screening machine is used for carrying out single-stage screening, screening effect is good, screening efficiency is high, but multi-stage screening is carried out, the internal structure of the equipment is complex, equipment manufacturing cost is high, the rolling screening machine is very favorable for carrying out multi-stage screening, in the process of carrying out grading screening on petroleum fracturing sand, casting 3D printing sand, process sand carving sand, 3D printing sand carving sand and the like, when the sand entering the screening equipment at one time is excessive, some sand cannot timely and fully contact a sand net, and flows to the next-stage sand net, so that the problems of incomplete screening, inaccurate sand grading, non-centralized particle size distribution, overlarge range, excessive residual sand and the like are caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rotary screening machine for solving the problems in the prior art.

This screening machine includes: the sand separating device comprises a cylindrical rolling screen, a rolling support, a sand separating hopper, an inclined adjusting frame and a rotary driving motor, wherein the rolling support is used for supporting the rolling screen to rotate;

wherein, cylindrical rolling screen includes: the sieve comprises a first-stage sieve, a second-stage sieve and a third-stage sieve which are distributed from a feeding end to a discharging end, wherein the mesh number of the first-stage sieve is the largest, the mesh number of the third-stage sieve is the smallest, the mesh number of the second-stage sieve is between the first-stage sieve and the third-stage sieve, a rotary partition plate is arranged between the first-stage sieve and the second-stage sieve and between the second-stage sieve and the third-stage sieve, and the diameter of the rotary partition plate is slightly smaller than the inner diameter of a rolling sieve.

Furthermore, a rotating shaft is fixedly connected to the rotating partition plate, penetrates through the center of the rolling screen and extends out of the rolling screen in the diameter direction.

Furthermore, the part of the rotating shaft extending out of the rolling screen is fixedly connected with a planetary bevel gear, the planetary bevel gear drives the rotating partition plate to rotate around the rotating shaft when rotating, and meanwhile, the planetary bevel gear rotates along with the rolling screen.

Furthermore, a translation driving mechanism is fixedly arranged along the axial direction of the rolling screen and is positioned outside the rolling screen, a moving end on the translation driving mechanism is connected with a large bevel rack, and the large bevel rack can be meshed with or separated from the planetary bevel gear under the action of the translation driving mechanism.

Furthermore, the large bevel gear rack is an arc-shaped rack, the arc length of the large bevel gear rack is equal to one fourth of the circumference of the planetary bevel gear, the planetary bevel gear drives the rotary partition plate to rotate 90 degrees after the planetary bevel gear is meshed with the large bevel gear rack, the rotary partition plate is supposed to be parallel to the radial direction of the rolling screen before rotating, after the rotary partition plate rotates, the translation driving mechanism drives the large bevel gear rack to be far away from the planetary bevel gear, and after the large bevel gear rack is disengaged from the planetary bevel gear, the rotary partition plate keeps a state of being parallel to the axial direction of the rolling screen.

The utility model has the technical effects that: because the rolling screen equipment has the characteristics of screening and forward rolling of sand materials, the rotary partition plates are additionally arranged between the screens of all levels of the rolling screen, and during feeding, the rotary partition plates separate the screening of all levels into independent screen cavities, so that the sand grains in all the screen cavities can be screened for a long time, and the sand grain grading accuracy can be ensured; meanwhile, the rotary shaft in the middle of the rotary partition plate is used for controlling the rotary partition plate to rotate, and the states of communication or isolation among all levels of screen meshes of the rolling screen can be switched at any time.

Drawings

Figure 1 is an isometric view of a screening machine according to the present invention;

figure 2 is a top view of the screen of the present invention.

Fig. 1 and 2 illustrate the overall structure of the screening machine, and in order to show the installation mode of the rotary partition plate in the drum screen, windows are specially arranged on a primary screen 11, a secondary screen 12 and a tertiary screen 13, and the windows do not exist in the practical application process.

This screening machine includes: the sand separating device comprises a cylindrical rolling screen 1, a rolling support 2 for supporting the rolling screen 1 to rotate, a sand separating hopper 4 arranged below the rolling screen 1, an inclined adjusting frame 3 positioned between the sand separating hopper 4 and the rolling support 2, and a rotation driving motor 5 for driving the rolling screen 1 to rotate;

wherein, cylindrical rolling screen 1 includes: the primary sieve 11, the secondary sieve 12 and the tertiary sieve 13 are distributed from the feeding end to the discharging end, the mesh number of the primary sieve 11 is the largest, the mesh number of the tertiary sieve 13 is the smallest, the mesh number of the secondary sieve 12 is between the primary sieve 11 and the tertiary sieve 13, the primary sieve 11 and the secondary sieve 12 are arranged between the secondary sieve 12 and the tertiary sieve 13, a rotary clapboard 6 is arranged between the secondary sieve 12 and the tertiary sieve 13, and the diameter of the rotary clapboard 6 is slightly smaller than the inner diameter of the rolling sieve 1;

the rotating partition plate 6 is fixedly connected with a rotating shaft 6, the rotating shaft 6 penetrates through the center of the rolling screen 1 and extends out of the diameter direction of the rolling screen 1, the part of the rotating shaft 6 extending into the rolling screen 1 is fixedly connected with a planetary bevel gear 62, and the planetary bevel gear 62 drives the rotating partition plate 6 to rotate around the rotating shaft 6 when rotating;

a translation driving mechanism 64 is fixedly arranged along the axial direction of the rolling screen 1, the translation driving mechanism 64 is positioned outside the rolling screen 1, a moving end on the translation driving mechanism 64 is connected with a large bevel rack 63, the large bevel rack 63 can be meshed with or separated from the planetary bevel gear 62 under the action of the translation driving mechanism 64, the large bevel rack 63 is an arc-shaped rack, the arc length of the arc-shaped rack is equal to one fourth of the circumference of the pitch circle of the planetary bevel gear 62, and the planetary bevel gear 62 drives the rotary clapboard 6 to rotate by 90 degrees after the planetary bevel gear 62 is meshed with the large bevel rack 63.

In the figure, 1, a rolling screen, 2, a rolling support, 3, an inclination adjusting frame, 4, a sand separating hopper, 5, a rotary driving motor, 6, a rotary partition plate, 11, a first-stage screen, 12, a second-stage screen, 13, a third-stage screen, 61, a rotating shaft, 62, a planetary bevel gear, 63, a large bevel gear rack and 64, a translation driving mechanism.

Detailed Description

The following describes an embodiment of the present invention with reference to fig. 1 to 2.

The working principle is as follows: before screening, the rotary partition plate 6 is parallel to the radial direction of the rolling screen 1, the primary screen 11, the secondary screen 12 and the tertiary screen 13 are mutually isolated into different screening cavities, sand materials are poured into the primary screen 11 for rotary screening through transmission equipment and the like, and due to the obstruction of the rotary partition plate 6, the sand materials can be screened in the primary screen 11 only repeatedly, so that the part of sand particles with smaller particle sizes in the sand materials are ensured to fall into the sand separating hopper 4 through the primary screen 11;

the translation driving mechanism 64 drives the large bevel gear rack 63 to be close to the planetary bevel gear 62, when the rolling screen 1 rotates, the planetary bevel gear 62 is driven to rotate simultaneously, after the rolling screen contacts the large bevel gear rack 63, the planetary bevel gear 62 rotates due to the meshing action of gears, and drives the rotating shaft 61 and the rotating partition plate 6 to rotate 90 degrees, so that the primary screen 11 is communicated with the secondary screen 12, and sand can enter the secondary screen from the primary screen 11;

the sand screening machine is operated in a reciprocating mode according to the steps, and multi-stage accurate sand screening can be achieved on the drum screening machine.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a rotary screening machine which characterized in that, this screening machine includes: the sand separating device comprises a cylindrical rolling screen (1), a rolling support (2) for supporting the rolling screen (1) to rotate, a sand separating hopper (4) arranged below the rolling screen (1), an inclined adjusting frame (3) positioned between the sand separating hopper (4) and the rolling support (2), and a rotation driving motor (5) for driving the rolling screen (1) to rotate;

wherein the cylindrical roller screen (1) comprises: the primary sieve (11), the secondary sieve (12) and the tertiary sieve (13) are distributed from the feeding end to the discharging end, the mesh number of the primary sieve (11) is the largest, the mesh number of the tertiary sieve (13) is the smallest, and the mesh number of the secondary sieve (12) is between the primary sieve (11) and the tertiary sieve (13);

between one-level sieve (11) and second grade sieve (12), all be equipped with rotating partition (6) between second grade sieve (12) and tertiary sieve (13), the diameter of rotating partition (6) is slightly less than the internal diameter of roll screen (1).

2. The rotary screen according to claim 1, characterized in that a rotating shaft (61) is fixedly connected to the rotating partition (6), the rotating shaft (61) passing through the center of the rolling screen (1) and protruding from the diameter direction of the rolling screen (1).

3. The rotary screen according to claim 2, characterized in that the part of the rotating shaft (61) extending into the rolling screen (1) is fixedly connected with a planetary bevel gear (62), and the planetary bevel gear (62) rotates to drive the rotating clapboard (6) to rotate around the rotating shaft (61).

4. The rotary screen machine according to claim 3, characterized in that a translational drive mechanism (64) is fixedly arranged along the axial direction of the rolling screen (1), the translational drive mechanism (64) is positioned outside the rolling screen (1), the moving end of the translational drive mechanism (64) is connected with a large bevel gear rack (63), and the large bevel gear rack (63) can be engaged with or disengaged from the planetary bevel gear (62) under the action of the translational drive mechanism (64).

5. The rotary screen machine according to claim 4, characterized in that the large conical rack (63) is an arc rack, the arc length of which is equal to one fourth of the circumference of the pitch circle of the bevel planet gears (62), so that the bevel planet gears (62) drive the rotary partition (6) to rotate by 90 degrees after the bevel planet gears (62) are meshed with the large conical rack (63).