Vibration pendulum type sand screening machine for molding sand

Abstract

The utility model relates to the technical field of sand screening machines, in particular to a vibration swing type sand screening machine for molding sand. According to the technical scheme, a discharging hopper is installed on a base, a sieve tray is installed on the discharging hopper, a discharging pipe is arranged on one side of the sieve tray, a top cover is installed at the top end of the sieve tray, a support is elastically installed on the base through a spring, and vibration motors are installed on the two sides of the support. An upper sealing strip and a lower sealing strip are respectively arranged on convex edges at the upper end and the lower end of the sieve tray, a positioning hole is formed in the upper sealing strip, and a positioning block is arranged on the lower sealing strip. The upper sealing strip and the lower sealing strip are respectively arranged on the convex edges at the upper end and the lower end of the sieve tray, and are matched with each other through the positioning blocks and the positioning holes to realize quick limiting and butt joint, so that the tight sealing between the sieve trays is realized. And the hoop is clamped and fixed with the convex edge of the sieve tray through the clamping groove, so that stable connection can be provided, and the sieve tray is ensured not to loosen or fall off in the vibration process.

Description

Technical Field

[0001] This utility model relates to the field of sand screening machine technology, specifically to a vibrating sand screening machine for molding sand. Background Technology

[0002] The working principle of a vibrating sand screening machine is to use the up-and-down oscillation of the screen body to sieve granular materials (such as molding sand) on the screen mesh, thereby achieving the effect of separating different particle sizes. This oscillating screening method makes the screening efficiency higher and the screening results more accurate and consistent.

[0003] A search revealed that patent CN202323525020.4 discloses a vibrating screen disc device for a vibrating screen. While this device includes a screen mesh, support block, spring column, and limiting end frame, with the support block integrally fixed to the lower end of the screen mesh, this utility model, a vibrating screen disc device for a vibrating screen, achieves efficient screening through its disc structure. However, this device requires multiple adjustments and alignments between the screen discs during use. This complex alignment process not only increases operational difficulty but may also lead to inaccurate adjustments, thus affecting the screening effect. Furthermore, frequent alignment adjustments reduce work efficiency and increase operating costs. The inconvenience of operation may cause operator fatigue and even lead to equipment damage or poor screening results due to operational errors. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a vibrating sand screening machine for molding sand, which solves the problems mentioned in the background art.

[0005] The solution to the above-mentioned technical problems provided by this utility model is as follows:

[0006] A vibrating sand screening machine for molding sand includes a base, a hopper mounted on the base, a screen plate mounted on the hopper, a discharge pipe on one side of the screen plate, and a top cover mounted on the top of the screen plate.

[0007] A bracket is elastically mounted on the base by a spring. Vibration motors are installed on both sides of the bracket. The upper and lower ends of the screen disc are provided with raised edges. An upper sealing strip and a lower sealing strip are respectively provided on the raised edges of the upper and lower ends of the screen disc. The upper sealing strip is provided with a positioning hole, and the lower sealing strip is provided with a positioning block. Two adjacent screen discs are mutually limited and connected by the positioning block and the positioning hole. After the hopper, screen disc and top cover are connected, they are locked and fixed by a clamp.

[0008] Based on the above technical solution, the present invention can be further improved as follows.

[0009] Furthermore, the bottom end of the hopper is provided with a discharge pipe.

[0010] The beneficial effects of adopting the above-mentioned further solutions are:

[0011] The discharge pipe is located at the bottom of the hopper, allowing the screened molding sand to flow out directly and smoothly. This design avoids material blockage and accumulation during the discharge process, ensuring the continuity and stability of the screening process. The discharge pipe design facilitates connection and integration with other equipment or systems (such as conveyor belts, collection containers, etc.). This design improves the flexibility and applicability of the sand screening machine, enabling it to be easily integrated into various production lines and processes.

[0012] Furthermore, the clamp has a slot inside, and a positioning strip is provided in the slot.

[0013] The beneficial effects of adopting the above-mentioned further solutions are:

[0014] The combination of the slot and positioning strip provides additional support and fixing points for the clamp. This structural reinforcement allows the clamp to more firmly secure the screen disc, preventing it from loosening or shifting during vibration, thus enhancing the overall structural stability of the sand screening machine. The positioning strip makes it easier to align the clamp with the raised edge of the screen disc during installation, ensuring a tight fit between the clamp and the screen disc. This design improves installation accuracy and efficiency, reducing the possibility of poor screening results or equipment failure due to improper installation.

[0015] Furthermore, the clamp is fixed by interlocking with the protruding edge through a slot.

[0016] The beneficial effects of adopting the above-mentioned further solutions are:

[0017] The snap-fit ​​mechanism between the slot and the flange provides a secure and stable connection. The clamp tightly holds the flange through the slot, creating a tight fit that effectively prevents loosening or displacement. This close fit between the clamp and the flange also effectively reduces noise and vibration generated during equipment operation. This design helps improve the working environment and minimizes interference with surrounding equipment and personnel.

[0018] Furthermore, the positioning strip is used to fill the gap between the clamp and the upper and lower sealing strips.

[0019] The beneficial effects of adopting the above-mentioned further solutions are:

[0020] The main function of the positioning strip is to fill the gaps between the clamp and the upper and lower sealing strips, thereby ensuring a tight seal between the screen discs. This design effectively prevents the leakage of molding sand during screening, improving the accuracy and efficiency of screening. Simultaneously, the tight seal also helps reduce the transmission of noise and vibration, improving the working environment. The filling effect of the positioning strip strengthens the connection between the clamp and the sealing strip. This design enhances the stability of the screen disc structure, helping to prevent the screen disc from loosening or shifting during vibration.

[0021] Furthermore, the opening end of the clamp is provided with a fixing block, and the clamp is locked and fixed by bolts and nuts installed on the fixing block.

[0022] The beneficial effects of adopting the above-mentioned further solutions are:

[0023] By locking the open end of the clamp with bolts and nuts, a tight fit between the clamp and the object being secured is ensured, resulting in a robust and stable connection. This design maintains structural integrity and stability even under significant pressure or vibration. It can accommodate clamps of various sizes and shapes, as well as objects being secured. Adjusting the position and number of bolts and nuts can meet the fastening requirements of different scenarios. Furthermore, the standard nature of the bolts and nuts makes this design highly versatile and interchangeable.

[0024] This utility model provides a vibrating sand screening machine for molding sand. It has the following beneficial effects:

[0025] The clamp is secured to the screen disc by engaging with its convex edge via a slot. This design is not only simple in structure but also provides a stable connection, ensuring the screen disc will not loosen or fall off during vibration. The clamp's open end has a fixing block, which is secured with bolts and nuts. This design makes installation and removal of the clamp very easy, facilitating equipment maintenance and screen disc replacement. The internal slots and positioning strips of the clamp can accommodate screen discs of different sizes, improving the equipment's versatility and flexibility.

[0026] The upper and lower sealing strips are respectively installed on the raised edges at the upper and lower ends of the screen disc. Through the cooperation of positioning blocks and positioning holes, a tight seal is achieved between the screen discs. This design effectively prevents leakage of molding sand during screening, improving screening efficiency. The sealing strips also play a role in vibration damping and noise reduction. During screening, the vibration and noise generated by the vibrating motor are partially absorbed and isolated by the sealing strips, thereby reducing the noise level and vibration amplitude of the equipment and improving the comfort of the working environment. The use of sealing strips reduces friction and wear between the screen discs, extending the service life of the screen discs and the entire equipment. At the same time, due to the good sealing effect, it reduces the erosion and corrosion of the equipment by molding sand, further improving the durability of the equipment. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0028] In the attached diagram:

[0029] Figure 1 This is a schematic diagram of the main appearance of the present utility model;

[0030] Figure 2 This is a bottom view of the present invention.

[0031] Figure 3 This is a schematic diagram of the main appearance of the sieve tray of this utility model.

[0032] Figure 4 This is a bottom view of the sieve disc of this utility model;

[0033] Figure 5 This is a schematic diagram of the half-section structure of the clamp of this utility model.

[0034] The attached diagram lists the components represented by each number as follows:

[0035] 1. Feeding pipe; 2. Feeding hopper; 201. Discharge pipe; 3. Base; 301. Bracket; 302. Spring; 4. Screen plate; 401. Raised edge; 402. Upper sealing strip; 403. Positioning hole; 404. Positioning block; 405. Lower sealing strip; 5. Clamp; 501. Fixing block; 502. Slot; 503. Positioning strip; 6. Top cover; 7. Vibration motor. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0037] Please see Figures 1 to 5 As shown, the embodiments provided by this utility model are as follows:

[0038] Example 1

[0039] A vibrating sand screening machine for molding sand includes a base 3, on which a hopper 2 is mounted. A discharge pipe 201 is located at the bottom of the hopper 2, allowing the screened molding sand to flow out directly and smoothly. This design avoids material blockage and accumulation during the discharge process, ensuring the continuity and stability of the screening process. The discharge pipe 201 is designed for easy connection and integration with other equipment or systems (such as conveyor belts, collection containers, etc.). This design improves the flexibility and applicability of the sand screening machine, enabling it to be easily integrated into various production lines and processes. A screen plate 4 is mounted on the hopper 2, with a discharge pipe 1 on one side of the screen plate 4, and a top cover 6 is mounted on the top of the screen plate 4.

[0040] Example 2

[0041] To ensure accurate alignment and secure fixing of the hopper 2, screen plate 4, and top cover 6, for example, as follows: Figures 1 to 5As shown, the present invention also includes: a bracket 301 elastically mounted on the base 3 via a spring 302; a vibration motor 7 mounted on both sides of the bracket 301; raised edges 401 at the upper and lower ends of the screen plate 4; an upper sealing strip 402 and a lower sealing strip 405 respectively on the raised edges 401 at the upper and lower ends of the screen plate 4; a positioning hole 403 on the upper sealing strip 402; and a positioning block 404 on the lower sealing strip 405; two adjacent screen plates 4 are mutually matched and positioned by the positioning block 404 and the positioning hole 403; after the hopper 2, screen plate 4, and top cover 6 are connected, they are locked and fixed by a clamp 5; a fixing block 501 is provided at the open end of the clamp 5; the clamp 5 is locked and fixed by bolts and nuts installed on the fixing block 501; locking and fixing the open end of the clamp 5 by bolts and nuts ensures a tight fit between the clamp 5 and the fixed object, thereby achieving a firm and stable connection. This design can maintain the integrity and stability of the structure when subjected to large pressure or vibration. This design can adapt to clamps 5 of different sizes and shapes, as well as the objects being fixed. By adjusting the position and number of bolts and nuts, it can meet the fastening requirements in different scenarios. At the same time, the standard nature of the bolts and nuts also makes this design highly versatile and interchangeable. The clamp 5 has an internal slot 502, within which a positioning strip 503 is installed. The cooperation between the slot 502 and the positioning strip 503 provides additional support and fixing points for the clamp 5. This structural reinforcement allows the clamp 5 to more firmly fix the screen disc 4, preventing the screen disc 4 from loosening or shifting during vibration, thereby enhancing the structural stability of the entire sand screening machine. The positioning strip 503 makes it easier for the clamp 5 to align with the raised edge 401 of the screen disc 4 during installation, ensuring a tight fit between the clamp 5 and the screen disc 4. This design improves installation accuracy and efficiency, reducing the possibility of poor screening results or equipment malfunctions due to improper installation. The clamp 5 is fixed to the protruding edge 401 by interlocking with the slot 502, providing a strong and stable connection. The clamp 5 tightly holds the protruding edge 401 through the slot 502, forming a tight fit and effectively preventing loosening or displacement. The tight fit between the clamp 5 and the protruding edge 401 effectively reduces noise and vibration generated during equipment operation. This design helps improve the working environment and reduce interference with surrounding equipment and personnel. The positioning strip 503 fills the gaps between the clamp 5 and the upper and lower sealing strips 402 and 405, ensuring a tight seal between the screen discs 4. This design effectively prevents the leakage of molding sand during screening, improving screening accuracy and efficiency. Meanwhile, the tight seal also helps reduce the transmission of noise and vibration, improving the working environment. The filling of the positioning strip 503 further strengthens the connection between the clamp 5 and the sealing strip.This design enhances the stability of the sieve disc 4 structure and helps prevent the sieve disc 4 from loosening or shifting during vibration.

[0042] Working principle:

[0043] The vibratory motor 7 is mounted on the bracket 301 and elastically connected to the base 3 via a spring 302. When the vibratory motor 7 is started, it generates a periodic excitation force. The excitation force is transmitted to the screen plate 4 through the bracket 301, causing the screen plate 4 to vibrate.

[0044] Driven by the vibrating motor 7, the screen 4 vibrates up, down, left, and right. This motion causes the molding sand on the screen 4 to be continuously thrown and impacted. The throwing and impacting action separates the particles of different sizes in the molding sand. Smaller particles fall through the mesh of the screen into the lower screen 4 or the collection container, while larger particles remain on the screen and continue to be thrown and impacted.

[0045] The upper sealing strip 402 and the lower sealing strip 405 are respectively installed on the raised edges 401 at the upper and lower ends of the screen plate 4. Through the mutual cooperation and limiting connection of the positioning block 404 and the positioning hole 403, a tight seal is achieved between the screen plates 4. The design of the sealing strips effectively prevents the leakage of molding sand during the screening process, ensuring the accuracy and efficiency of screening.

[0046] Molding sand enters the screen plate 4 from the feed hopper 2 for screening. After screening, the molding sand falls through the mesh of the screen into the lower screen plate 4 or the collection container. When the molding sand in the lower screen plate 4 or the collection container accumulates to a certain amount, it can be discharged or collected through the discharge pipe 201 or the feed pipe 1.

[0047] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0048] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A vibrating sand screening machine for molding sand, comprising a base (3), a hopper (2) mounted on the base (3), a screen plate (4) mounted on the hopper (2), a discharge pipe (1) provided on one side of the screen plate (4), and a top cover (6) mounted on the top of the screen plate (4), characterized in that: A bracket (301) is elastically mounted on the base (3) by a spring (302). Vibration motors (7) are mounted on both sides of the bracket (301). The upper and lower ends of the screen plate (4) are provided with protruding edges (401). The upper and lower ends of the protruding edges (401) of the screen plate (4) are respectively provided with an upper sealing strip (402) and a lower sealing strip (405). The upper sealing strip (402) is provided with a positioning hole (403). The lower sealing strip (405) is provided with a positioning block (404). Two adjacent screen plates (4) are mutually matched and limited by the positioning block (404) and the positioning hole (403). After the hopper (2), screen plate (4) and top cover (6) are connected, they are locked and fixed by a clamp (5).

2. The vibrating sand screening machine for molding sand according to claim 1, characterized in that: The bottom end of the hopper (2) is provided with a discharge pipe (201).

3. The vibrating sand screening machine for molding sand according to claim 1, characterized in that: The clamp (5) has a slot (502) inside, and a positioning strip (503) is provided in the slot (502).

4. The vibrating sand screening machine for molding sand according to claim 1, characterized in that: The clamp (5) is fixed to the protrusion (401) by the slot (502).

5. The vibrating sand screening machine for molding sand according to claim 3, characterized in that: The positioning strip (503) is used to fill the gap between the clamp (5) and the upper sealing strip (402) and the lower sealing strip (405).

6. The vibrating sand screening machine for molding sand according to claim 1, characterized in that: The clamp (5) has a fixing block (501) at its open end, and the clamp (5) is locked and fixed by bolts and nuts installed on the fixing block (501).

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