An openable trommel screen

Abstract

The utility model relates to food processing equipment field, especially a kind of openable drum screen.The utility model includes: first screen, second screen, buckle mechanism, bayonet part;The cross section of the first screen is semicircular, the cross section of the second screen corresponds with the cross section of the first screen, and the cross section of the first screen and second screen can be combined into a whole circle;The first screen is hinged with the side of the second screen, the buckle mechanism is installed on the side wheel surface of the first screen, and the buckle mechanism is located at the edge of the first screen, the bayonet part is installed on the side wheel surface of the second screen, and the bayonet part and the buckle mechanism are on the same plane after the first screen and the second screen are combined.

Description

Technical Field

[0001] This utility model relates to the field of food processing equipment, and in particular to an openable and closable drum screen. Background Technology

[0002] The application of rotary drum screens in food processing is closely related to food cleaning, screening, separation, quality control, and improved production efficiency. In food processing, many raw materials may contain impurities such as soil, stones, fragments, pests, and dust. Especially in agricultural product processing (such as grains, vegetables, and fruits), impurity removal is crucial for improving the quality of the final product. These impurities not only affect the appearance, taste, and quality of food but may also pose safety hazards, thus requiring efficient removal through screening and washing methods. Rotary drum screens use rotating mesh or drums to evenly distribute materials within their interior and separate them according to their size and shape. They can quickly and effectively separate materials of different particle sizes, removing most unqualified impurities. Especially in the initial processing stages of products such as grains, nuts, and cereals, rotary drum screens efficiently remove impurities. Suitable for large-scale continuous operation, rotary drum screens can operate around the clock, meeting the needs of high-efficiency production lines. This is particularly important for large-scale food processing, enabling automation and improved production efficiency.

[0003] However, existing drum screens often encounter the following problems during use: In traditional food processing, many materials have strong adsorption and viscosity, such as syrups, jams, pastes, and starch pastes. These substances often adhere to the screen mesh and the inner wall of the drum during screening, forming residues. As operation continues, these residues not only affect screening efficiency but also gradually accumulate, leading to a decrease in screening effect. Furthermore, the accumulation of viscous materials on the inner wall of the drum is usually difficult to clean, posing significant challenges to equipment maintenance and hygiene management. Especially in the food processing industry, strict hygiene standards require that equipment be kept clean to ensure food safety. Prolonged improper cleaning and maintenance can lead to bacterial growth, even affecting the quality and safety of food. To address the shortcomings of existing technologies, this invention provides an openable and closable drum screen. Utility Model Content

[0004] The main objective of this invention is to provide an openable drum screen to effectively solve the problem mentioned in the background art of the accumulation of viscous materials on the inner wall of the drum, which is usually difficult to clean.

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

[0006] An openable and closable drum screen includes:

[0007] The first screen has a semi-circular cross-section;

[0008] The second screen has a cross-section corresponding to the cross-section of the first screen, and the cross-sections of the first screen and the second screen can be combined to form a complete circle; the first screen and the second screen are hinged on one side.

[0009] A latching mechanism is mounted on the side wheel surface of the first screen and is located at one edge of the first screen.

[0010] A latching component is installed on the side wheel surface of the second screen, and the latching component and the buckling mechanism are on the same plane after the first screen and the second screen are combined.

[0011] The latching mechanism further includes:

[0012] A snap-fit ​​housing is installed on the side wheel surface of the first screen, and the snap-fit ​​housing has an accommodating space.

[0013] A connecting shell, which is mounted on one side of the snap-fit ​​shell;

[0014] A main push rod, which is located inside the snap-fit ​​housing, with one end of the main push rod passing through the connecting housing and the other end of the main push rod extending into the connecting housing;

[0015] A spring is sleeved on one end of the main push rod, and one end of the spring is connected to the outer wall of the connecting shell, while the other end of the spring is connected to the driving component.

[0016] The driving component is sleeved on the other end of the main push rod, and the driving component is connected to the other end of the spring;

[0017] An extension connector, at least two of which are mounted on the side wheel surface of the drive member;

[0018] The locking rod has two locking rods, and the two locking rods are connected to the two extension connectors in a one-to-one correspondence. The positions of the two locking rods are symmetrically distributed along the axis of symmetry of the main push rod.

[0019] Each of the aforementioned locking rods has a sliding groove, and one end of each sliding groove is offset toward the main push rod.

[0020] The guide rods are numbered in relation to the number of slide grooves. Each guide rod is located in a slide groove and is on the same horizontal line. The guide rods are axially fixed to the inner wall of the snap-fit ​​shell.

[0021] Also includes:

[0022] An inner slide rail is formed within the connecting shell;

[0023] A force-applying rod, the output end of which is inserted into the inner slide rail, and the force-applying rod is capable of sliding along the direction of the inner slide rail;

[0024] A ramp block, which is installed on the force-applying rod, and the surface of the ramp block has a certain slope;

[0025] A slanted cut is made at the through end of the main push rod, and the cut surface of the slanted cut is in the same direction as the slope of the ramp block, and the cut surface of the slanted cut is in contact with the slope surface of the ramp block.

[0026] The guide rod is cylindrical, and its outer surface fits tightly with the inner surface of the groove.

[0027] The spring is a helical spring, and its inner diameter matches the outer diameter of the main push rod.

[0028] The other end of the main push rod is connected to the inner wall of the connecting shell through a sliding fit.

[0029] The slope of the ramp block forms the same angle as the oblique cut surface of the main push rod.

[0030] The end of the force-applying rod engages with the ramp block, and the force-applying rod is driven to slide along the inner slide rail through the cut surface of the oblique cut.

[0031] Compared with existing technologies, the advantages of this invention are: the openable drum screen designed in this invention facilitates auxiliary cleaning. Through a snap-fit ​​mechanism, operators can easily open and close the first and second screens from their axis of symmetry. This allows users to quickly open the screens for immediate cleaning of the inner walls after screening, without the need for complicated disassembly procedures. The openable design also allows operators to conveniently perform targeted cleaning of the inner walls, especially in areas with heavy material adhesion, avoiding the tedious and incomplete cleaning required by traditional screens. Attached Figure Description

[0032] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the specific embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof.

[0033] Figure 1 This is a schematic diagram of the overall shape of the present utility model.

[0034] Figure 2 This is a schematic diagram of the buckle mechanism of this utility model.

[0035] Figure 3 for Figure 2 A magnified view of A in the middle.

[0036] Figure 4 This is a schematic diagram of the latching mechanism's locking rod.

[0037] The following are the labels in the diagram: 1. First screen; 2. Second screen; 3. Buckling mechanism; 4. Buckling component; 31. Snap-fit ​​shell; 32. Connecting shell; 33. Main push rod; 34. Spring; 35. Drive component; 36. Extension connector; 37. Snap-fit ​​rod; 38. Slide groove; 39. Guide rod; 5. Inner slide; 6. Force application rod; 7. Ramp block; 8. Angled cut. Detailed Implementation

[0038] 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.

[0039] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" 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 will understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0040] like Figure 1-4 As shown, an openable and closable drum screen includes: a first screen 1, a second screen 2, a snap-fit ​​mechanism 3, and a locking element 4. The first screen 1 has a semi-circular cross-section, and the cross-section of the second screen 2 corresponds to the cross-section of the first screen 1. The cross-sections of the first screen 1 and the second screen 2 can be combined to form a complete circle. The first screen 1 and the second screen 2 are hinged on one side. The snap-fit ​​mechanism 3 is installed on the side wheel surface of the first screen 1, and the snap-fit ​​mechanism 3 is located at one edge of the first screen 1. The locking element 4 is installed on the side wheel surface of the second screen 2, and the locking element 4 and the snap-fit ​​mechanism 3 are on the same plane after the first screen 1 and the second screen 2 are combined. The design of two half-screen cylinders allows the screens to be easily combined and separated, and the shape of the screens facilitates the cleaning of accumulated materials after separation, improving cleaning efficiency.

[0041] In this invention, to enable the two screens to be quickly snapped together, a snap-fit ​​mechanism 3 is designed, which further includes: a snap-fit ​​shell 31 installed on the side wheel surface of the first screen 1, and the snap-fit ​​shell 31 having an accommodating space; a connecting shell 32 installed on one side of the snap-fit ​​shell 31; a main push rod 33 located inside the snap-fit ​​shell 31, with one end of the main push rod 33 passing through the connecting shell 32 and extending into the connecting shell 32; a spring 34 sleeved on one end of the main push rod 33; and the other end of the main push rod 33 connected to the inner wall of the connecting shell 32 through a sliding fit. One end of the spring 34 is connected to the outer wall of the connecting shell 32, and the other end of the spring 34 is connected to the driving member 35; the spring 34 is a helical spring 34, and its inner diameter matches the outer diameter of the main push rod 33; the driving member 35 is sleeved on the other end of the main push rod 33, and the driving member 35 is connected to the other end of the spring 34. The latching mechanism 3 employs a sliding main push rod 33, a spring 34, and a latching rod 37. The latching rod 37 can be pushed towards the latching member 4 via the force-applying rod 6, enabling rapid fixing and disassembly of the two parts of the screen. The spring 34 in the design is a helical spring 34, possessing good elasticity and durability, and maintaining a stable rebound force during continuous operation.

[0042] The aforementioned latching mechanism 3 further includes: at least two extension connectors 36 mounted on the side wheel surface of the drive member 35; two latching rods 37, each corresponding to one of the two extension connectors 36; the positions of the two latching rods 37 are symmetrically distributed along the axis of symmetry of the main push rod 33; each latching rod 37 has a groove 38, one end of each groove 38 is offset towards the main push rod 33; the number of guide rods 39 corresponds to the number of grooves 38, each guide rod 39 is located within a groove 38, and each guide rod 39 is on the same horizontal line; the guide rods 39 are axially fixedly connected to the inner wall of the latching shell 31. The guide rods 39 are cylindrical, and their outer surface fits tightly with the inner surface of the groove 38. The latching mechanism 3 provides a precise and controllable fixing method through the main push rod 33, latching rods 37, springs 34, and other structures. When the two screen parts are combined, the snap-fit ​​parts are firmly fixed by the snap-fit ​​mechanism 3, ensuring that the screen will not loosen or fall off due to vibration or external force during operation, thereby ensuring the screening effect and equipment safety.

[0043] In this invention, the snap-fit ​​housing 31 and the main push rod 33 should be made of high-strength steel alloys such as Q235, Q345, Cr-Mo alloy steel, or stainless steel, because they have good tensile strength and corrosion resistance, making them suitable for long-term use in screening environments. Stainless steel, in particular, effectively prevents corrosion, ensuring the reliability of the snap-fit ​​mechanism 3 in humid, high-temperature, and chemical environments. The high-strength materials ensure the structural stability of the snap-fit ​​housing 31 and the main push rod 33 during long-term use, preventing deformation or breakage during disassembly or under stress.

[0044] In this invention, the inner slide rail 5 is formed within the connecting shell 32. The output end of the force-applying rod 6 is inserted into the inner slide rail 5, and the force-applying rod 6 can slide along the direction of the inner slide rail 5. The design of the inner slide rail 5 allows the force-applying rod 6 to slide smoothly along the slide rail. The sliding of the ramp block 7 allows the main push rod 33 to generate sufficient axial displacement, thereby providing a stable force to push the locking rod 37. The ramp block 7 is installed on the force-applying rod 6. The slope of the ramp block 7 forms the same angle as the cut surface of the oblique cut 8 of the main push rod 33, and the surface of the ramp block 7 has a certain slope. An oblique cut 8 is formed on the through end of the main push rod 33, and the cut surface of the oblique cut 8 has the same slope trend as the ramp block 7. The cut surface of the oblique cut 8 contacts the slope surface of the ramp block 7. The contact design between the beveled cut 8 and the ramp block 7 ensures efficient transmission of the pushing force of the force-applying rod 6. Furthermore, the slope of the ramp block 7 is identical to the cross-section of the beveled cut 8 of the main push rod 33, guaranteeing stable operation. Users only need to gently push the force-applying rod 6 to connect or disconnect the screen, eliminating the need for additional tools or laborious disassembly steps. This design makes operation simpler and more intuitive, making it particularly suitable for work environments requiring frequent disassembly and cleaning.

[0045] It should be noted that, in use, taking the combination as an example, the first screen 1 and the second screen 2 of this utility model are combined into a screen cylinder. The force rod 6 is pushed, causing the ramp block 7 to slide within the connecting shell 32. The sliding of the ramp block 7 causes the oblique cut 8 to gradually contact the steep slope of the ramp surface. This means that the ramp block 7 begins to gradually compress the main push rod 33. The axial displacement of the main push rod 33 drives the drive component 35. The displacement of the drive component 35 stretches the spring 34, generating a rebound force. 5. By extending the connector 36, push the two locking rods 37 on both sides. The locking rods 37 gradually move towards the locking piece 4. During the displacement, the guide rod 39, due to the direction of the slide groove 38, guides the two locking rods 37 to gradually retract inward. When the two locking rods 37 pass through the locking piece 4, pull the force rod 6. The force rod 6 drives the ramp block 7 to gradually move away from the oblique cut 8. The main push rod 33 loses pressure, and the spring 34 rebounds, driving the drive piece 35 and the main push rod 33 to reset. This causes the two locking rods 37 to expand outward and lock the edge of the locking piece 4, completing the fixation. Conversely, by pushing the force rod 6 again to retract the two locking rods 37 inward again, the combined screen cylinder can be symmetrically separated. The inner wall of the separated screen cylinder can then be directly cleaned, making cleaning direct and efficient.

[0046] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations may be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A closable drum screen, characterized in that, include: The first screen (1) has a semi-circular cross-section; The second screen (2) has a cross-section corresponding to the cross-section of the first screen (1), and the cross-sections of the first screen (1) and the second screen (2) can be combined to form a complete circle; the first screen (1) and the second screen (2) are hinged on one side; The snap-fit ​​mechanism (3) is installed on the side wheel surface of the first screen (1) and the snap-fit ​​mechanism (3) is located at one edge of the first screen (1); The latching component (4) is installed on the side wheel surface of the second screen (2), and the latching component (4) and the buckling mechanism (3) are on the same plane after the first screen (1) and the second screen (2) are combined; The latching mechanism (3) further includes: A snap-fit ​​housing (31) is installed on the side wheel surface of the first screen (1), and the snap-fit ​​housing (31) has an accommodating space. A connecting shell (32) is mounted on one side of the snap-fit ​​shell (31); The main push rod (33) is located inside the snap-fit ​​housing (31), and one end of the main push rod (33) passes through the connecting housing (32), and one end of the main push rod (33) extends into the connecting housing (32); Spring (34), the spring (34) is sleeved on one end of the main push rod (33), and one end of the spring (34) is connected to the outer wall of the connecting shell (32), and the other end of the spring (34) is connected to the drive member (35); The driving component (35) is sleeved on the other end of the main push rod (33), and the driving component (35) is connected to the other end of the spring (34); Extension connectors (36), at least two of the extension connectors (36) are mounted on the side wheel surface of the drive member (35); The locking rod (37) is provided in two, and the two locking rods (37) are connected to the two extension connectors (36) in a one-to-one correspondence. The positions of the two locking rods (37) are symmetrically distributed along the axis of symmetry of the main push rod (33). Slide groove (38), each of the said snap-fit ​​rods (37) is provided with a slide groove (38), and one end of each slide groove (38) is offset towards the main push rod (33); Guide rod (39), the number of guide rods (39) corresponds to the number of slide grooves (38), each guide rod (39) is located in a slide groove (38), and each guide rod (39) is on the same horizontal line. The guide rod (39) is axially fixedly connected to the inner wall of the snap-fit ​​shell (31). Inner slide (5), the inner slide (5) is formed inside the connecting shell (32); A force-applying rod (6) is inserted into the inner slide rail (5) at its output end, and the force-applying rod (6) can slide along the direction of the inner slide rail (5); Ramp block (7), the ramp block (7) is installed on the force bar (6), and the surface of the ramp block (7) has a certain slope; A slanted cut (8) is made on the through end of the main push rod (33). The cut surface of the slanted cut (8) is the same as the slope trend of the ramp block (7). The cut surface of the slanted cut (8) is in contact with the slope surface of the ramp block (7).

2. The openable and closable drum screen according to claim 1, characterized in that, The guide rod (39) is cylindrical, and its outer surface fits tightly with the inner surface of the groove (38).

3. The openable and closable drum screen according to claim 1, characterized in that, The spring (34) is a helical spring, and its inner diameter matches the outer diameter of the main push rod (33).

4. The openable and closable drum screen according to claim 1, characterized in that, The other end of the main push rod (33) is connected to the inner wall of the connecting shell (32) by a sliding fit.

5. The openable and closable drum screen according to claim 1, characterized in that, The slope of the ramp block (7) forms the same angle as the oblique cut (8) of the main push rod (33).

6. The openable and closable drum screen according to claim 1, characterized in that, The end of the force-applying rod (6) engages with the ramp block (7), and the force-applying rod (6) is driven to slide along the inner slide (5) through the cut surface of the oblique cut (8).

Images