Sand screening machine for hydraulic engineering

Abstract

The utility model provides a sand screening machine for water conservancy project, including the case, the top of case is provided with feed hopper, the bottom of case is provided with the discharge hole, the inside rotation of case is connected with screen cloth, the bottom of screen cloth is provided with vibration motor, the inside one side of case is provided with the chute, the tail end of screen cloth is fixedly connected with the support plate, the top, bottom of support plate both sides all are provided with the spring. The utility model has the advantages of: the sand that is crushed by the roll is flowed into the reflux box through the material hole, the sand after crushing is moved upward by the lifting material disc, and is thrown into the reflux hole under the action of centrifugal force on the top of lifting material disc, and falls on the screen cloth again from the reflux hole, and then secondary screening, so the cycle, all sand is crushed into the sand of required particle size, improves sand use rate. Without separately carrying out secondary screening, the crushing and screening process of large particle size sand is automatically completed, work efficiency is higher, and the practicality is better.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy engineering technology, and in particular to a sand screening machine for water conservancy projects. Background Technology

[0002] Water conservancy projects are projects that utilize and distribute water resources. Water conservancy projects often require the construction of various dams, river embankments and other facilities. The construction of dams requires various building materials, and sand is a common building material. Natural sand contains various unqualified impurities, including stones or coarse sand. Usually, sand needs to be screened before it can be used as a building material for water conservancy projects.

[0003] For example, in a sand screening machine for water utilization disclosed in CN220346439U, a second hydraulic cylinder moves a collection frame backward to below the screen frame, then opens the screen plate, allowing coarse sand and stone impurities inside the screen frame to be discharged into the collection frame. Next, the second hydraulic cylinder moves the collection frame forward to below the pressure plate, and then the first hydraulic cylinder moves the pressure plate downward to press down on the coarse sand and stones inside the collection frame, crushing them into fine sand, thus meeting the standards for building materials suitable for water conservancy projects and improving sand utilization. However, after the coarse sand is crushed by the pressure plate, it still needs to be moved back to the screen frame for secondary filtration, repeating this process, which is cumbersome and inefficient. Therefore, an improved sand screening machine for water conservancy projects is proposed. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose a sand screening machine for water conservancy projects to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a sand screening machine for water conservancy projects, including a machine casing. A feed hopper is provided at the top of the machine casing, and a discharge hole is provided at the bottom of the machine casing. A screen is rotatably connected inside the machine casing, and a vibrating motor is provided at the bottom of the screen. A sliding groove is provided on one side of the machine casing, and a support plate is fixedly connected to the end of the screen. Springs are provided on both the top and bottom surfaces of the support plate. A discharge port is provided at the other end of the screen, and a crushing box is provided below the discharge port. A crushing roller is rotatably connected inside the crushing box.

[0007] A reflux box is fixedly connected to one side of the chassis. A material passage hole is provided between the reflux box and the crushing box. A material lifting plate is provided inside the reflux box. A reflux hole is provided between the top of the reflux box and the chassis.

[0008] Preferably, in any of the above embodiments, the bottom of the casing is provided with support legs, and one end of the screen is rotatably connected to the casing via a rotating shaft.

[0009] Preferably, in any of the above embodiments, the feed hopper is located on the top surface of the machine housing away from the screen shaft, and the vibrating motor is located in the middle of the bottom surface of the screen.

[0010] The above technical solution employs the following: The casing provides an installation platform for the screening structure, offering space for screening operations. Support legs are installed at the bottom of the casing to provide sufficient height for workers to receive materials from the bottom. A feed hopper is located at the top of the casing for easy feeding of raw materials. A discharge hole is located at the bottom of the casing for the screened sand to flow out. The screen is used to filter the sand; one end of the screen is rotatably connected to the inner wall of the casing, allowing the screen to move under the drive of a vibrating motor. This vibration-driven screening of the sand increases the screening speed.

[0011] Preferably, in any of the above embodiments, the screen is inclined and one end with a support plate is higher than the other end, and the support plate is disposed in the chute.

[0012] Preferably, in any of the above embodiments, the two ends of the spring are fixedly connected to the inner walls of the support plate and the slide groove, respectively, and the crushing box is fixedly connected to the inner wall of the machine casing.

[0013] The above technical solution employs two springs that connect the support plate from the top and bottom sides, allowing the screen to be held in place during vibration. A feed inlet is located at the bottom of the screen. When the screen sieves sand, the sand intercepted flows downwards during vibration and exits through the feed inlet, eventually falling into the crushing chamber. The crushing rollers rotate within the crushing chamber, crushing large-diameter stones and reducing their size.

[0014] Preferably, in any of the above embodiments, a motor with an output shaft fixedly connected to the rotating shaft of the crushing roller is provided on the outside of the casing, and the material passage hole is arranged obliquely.

[0015] Preferably, in any of the above solutions, the top surface of the reflux box is provided with a motor whose output shaft is fixedly connected to the rotating shaft of the lifting tray, and a guide plate is provided on the inner side of the reflux hole.

[0016] The above technical solution is as follows: the sand crushed by the crushing roller flows into the return box through the material hole. The motor at the top of the return box is started, and the motor drives the lifting plate to rotate. The lifting plate moves the crushed sand upward and, under the action of centrifugal force, it is thrown into the return hole at the top of the lifting plate. It then falls back onto the screen through the return hole for secondary screening. This cycle is repeated to crush all the sand into the required particle size, thereby improving the sand utilization rate.

[0017] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0018] This sand screening machine for water conservancy projects utilizes a structure including a screen, crushing box, crushing rollers, material passage, return box, lifting plate, and return hole. During screening, raw materials are placed in the feed hopper, and sand falls into the machine casing. The vibrating motor and an external motor are activated, causing the screen to vibrate and filter the sand. Sand intercepted by the screen flows downwards during vibration and exits through the feed port, eventually falling into the crushing box. The crushing rollers rotate within the crushing box, crushing large-diameter stones and reducing their size. The crushed sand flows through the material passage into the return box. The lifting plate moves the crushed sand upwards, and at the top of the lifting plate, centrifugal force throws it into the return hole, from where it falls back onto the screen for secondary screening. This cycle continues, crushing all the sand into the desired particle size, thus improving sand utilization. No separate secondary screening is required; the crushing and screening process for large-diameter sand is completed automatically, resulting in higher work efficiency and better practicality.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0023] Figure 3 For the present utility model Figure 2 Schematic diagram of the structure at point A;

[0024] Figure 4 For the present utility model Figure 2 A schematic diagram of the structure at point B.

[0025] In the diagram: 1-Chassis, 2-Feed hopper, 3-Discharge hole, 4-Screen, 5-Vibration motor, 6-Groove, 7-Support plate, 8-Spring, 9-Discharge port, 10-Grinding box, 11-Grinding roller, 12-Passing hole, 13-Return box, 14-Lifting plate, 15-Return hole. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] like Figures 1-4 As shown, this utility model includes a housing 1, a feeding hopper 2 on the top of the housing 1, a discharge hole 3 at the bottom of the housing 1, a screen 4 rotatably connected inside the housing 1, a vibrating motor 5 at the bottom of the screen 4, a sliding groove 6 on one side inside the housing 1, a support plate 7 fixedly connected to the end of the screen 4, springs 8 on both the top and bottom sides of the support plate 7, a discharge port 9 at the other end of the screen 4, a crushing box 10 below the discharge port 9, and a crushing roller 11 rotatably connected inside the crushing box 10.

[0029] A return box 13 is fixedly connected to one side of the casing 1. A material passage hole 12 is opened between the return box 13 and the crushing box 10. A lifting plate 14 is provided inside the return box 13. A return hole 15 is opened between the top of the return box 13 and the casing 1.

[0030] Example 1: The bottom of the casing 1 is equipped with support legs, and one end of the screen 4 is rotatably connected to the casing 1 via a rotating shaft. The feed hopper 2 is located on the top surface of the casing 1 away from the rotating shaft of the screen 4, and the vibrating motor 5 is located in the middle of the bottom surface of the screen 4. The casing 1 provides an installation platform for the screening structure and provides space for screening operations. The support legs at the bottom of the casing 1 provide a certain height, facilitating material receiving by workers from the bottom of the casing 1. The feed hopper 2 is located at the top of the casing 1 for easy feeding of raw materials. A discharge hole 3 is opened at the bottom of the casing 1 for the screened sand to flow out. The screen 4 is used to filter the sand; one end of the screen 4 is rotatably connected to the inner wall of the casing 1, allowing the screen 4 to move under the drive of the vibrating motor 5, thus screening the sand through vibration and increasing the screening speed.

[0031] Example 2: The screen 4 is angled, with one end of the support plate 7 higher than the other. The support plate 7 is located within the chute 6. The two ends of the spring 8 are fixedly connected to the support plate 7 and the inner wall of the chute 6, respectively. The crushing box 10 is fixedly connected to the inner wall of the casing 1. Two springs 8 are connected to the support plate 7 from the top and bottom sides, allowing the screen 4 to be pulled together during vibration. A feed port 9 is opened at the lower end of the screen 4. When the screen 4 screens sand, the sand intercepted by it flows downwards during the vibration of the screen 4 and flows downwards from the feed port 9, eventually falling into the crushing box 10. The crushing roller 11 rotates within the crushing box 10, crushing large-diameter stones and reducing their size.

[0032] Example 3: A motor with an output shaft fixedly connected to the rotating shaft of the crushing roller 11 is installed on the outside of the casing 1. The material passage hole 12 is set at an angle. A motor with an output shaft fixedly connected to the rotating shaft of the lifting plate 14 is installed on the top surface of the return box 13. A guide plate is installed on the inner side of the return hole 15. The sand crushed by the crushing roller 11 flows into the return box 13 through the material passage hole 12. The motor at the top of the return box 13 is started, and the motor drives the lifting plate 14 to rotate. The lifting plate 14 moves the crushed sand upward and, under the action of centrifugal force, throws it into the return hole 15 at the top of the lifting plate 14. It then falls back onto the screen 4 from the return hole 15 for secondary screening. This cycle continues until all the sand is crushed into the required particle size, improving the sand utilization rate.

[0033] The working principle of this utility model is as follows:

[0034] S1. Place the raw material into the feed hopper 2. The sand falls from the feed hopper 2 into the machine box 1. Start the vibration motor 5 and the motor on the outside of the machine box 1. The vibration motor 5 drives the screen 4 to vibrate, so that the sand is filtered.

[0035] S2. The sand intercepted by the screen 4 will flow downwards when the screen 4 vibrates, and then flow downwards from the feed port 9, eventually falling into the crushing box 10. The crushing roller 11 rotates inside the crushing box 10, and large-diameter stones are crushed and broken by the crushing roller 11, reducing their particle size.

[0036] S3. The sand crushed by the crushing roller 11 flows into the return box 13 through the material hole 12. The lifting plate 14 drives the crushed sand to move upward. At the top of the lifting plate 14, under the action of centrifugal force, the sand is thrown into the return hole 15 and falls back onto the screen 4 from the return hole 15 for secondary screening. This cycle continues until all the sand is crushed into the required particle size.

[0037] Compared with the prior art, the present invention has the following advantages:

[0038] This sand screening machine for water conservancy projects, through the configuration of a screen 4, a crushing box 10, a crushing roller 11, a material passage 12, a return box 13, a lifting plate 14, and a return hole 15, works as follows: Raw material is placed into the feed hopper 2, and sand falls from the feed hopper 2 into the machine housing 1. The vibration motor 5 and an external motor on the machine housing 1 are activated. The vibration motor 5 drives the screen 4 to vibrate, thus filtering the sand. The sand intercepted by the screen 4 flows downwards during the vibration of the screen 4 and flows downwards from the discharge port 9, eventually falling into the crushing box 10. The crushing roller 11 rotates inside the crushing box 10, crushing large-diameter stones and reducing their size. The sand crushed by the crushing roller 11 flows into the return box 13 through the material hole 12. The lifting plate 14 moves the crushed sand upwards, and at the top of the lifting plate 14, it is thrown into the return hole 15 under the action of centrifugal force, and then falls back onto the screen 4 for secondary screening. This cycle continues until all the sand is crushed into the required particle size, improving sand utilization. No separate secondary screening is needed; the crushing and screening process for large-diameter sand is completed automatically, resulting in higher work efficiency and better practicality.

Claims

1. A sand screening machine for water conservancy projects, comprising a machine casing (1); characterized in that, The top of the machine box (1) is provided with a feeding hopper (2), the bottom of the machine box (1) is provided with a discharge hole (3), a screen (4) is rotatably connected inside the machine box (1), a vibrating motor (5) is provided at the bottom of the screen (4), a sliding groove (6) is provided on one side of the machine box (1), a support plate (7) is fixedly connected to the end of the screen (4), springs (8) are provided on both the top and bottom sides of the support plate (7), a discharge port (9) is provided at the other end of the screen (4), a crushing box (10) is provided below the discharge port (9), and a crushing roller (11) is rotatably connected inside the crushing box (10). A return box (13) is fixedly connected to one side of the casing (1). A material passage hole (12) is opened between the return box (13) and the crushing box (10). A lifting plate (14) is provided inside the return box (13). A return hole (15) is opened between the top of the return box (13) and the casing (1).

2. The sand screening machine for water conservancy projects as described in claim 1, characterized in that: The bottom of the casing (1) is provided with support legs, and one end of the screen (4) is rotatably connected to the casing (1) through a rotating shaft.

3. A sand screening machine for water conservancy projects as described in claim 2, characterized in that: The feed hopper (2) is located on the top surface of the machine box (1) away from the rotating shaft of the screen (4), and the vibrating motor (5) is located in the middle of the bottom surface of the screen (4).

4. A sand screening machine for water conservancy projects as described in claim 3, characterized in that: The screen (4) is obliquely arranged and one end of the screen (4) is higher than the other end, and the support plate (7) is arranged in the groove (6).

5. A sand screening machine for water conservancy projects as described in claim 4, characterized in that: The two ends of the spring (8) are fixedly connected to the inner walls of the support plate (7) and the slide (6), respectively, and the crushing box (10) is fixedly connected to the inner wall of the machine box (1).

6. A sand screening machine for water conservancy projects as described in claim 5, characterized in that: The outer side of the housing (1) is provided with a motor whose output shaft is fixedly connected to the rotating shaft of the crushing roller (11), and the material passage hole (12) is set obliquely.

7. A sand screening machine for water conservancy projects as described in claim 6, characterized in that: The top surface of the return box (13) is provided with a motor whose output shaft is fixedly connected to the rotating shaft of the lifting plate (14), and a guide plate is provided on the inner side of the return hole (15).

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