X-ray machine protection curtain device and food X-ray machine
By designing a stainless steel sheet with a bent structure, the problem of small pieces of pork sticking together during X-ray inspection was solved, improving passability and applicability and ensuring smooth inspection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TECHIK INSTR SHANGHAI
- Filing Date
- 2025-04-21
- Publication Date
- 2026-05-15
AI Technical Summary
The existing stainless steel protective curtain device results in poor passage of pork when inspecting small pieces of pork, causing the pork to stick together and hindering subsequent processing.
The stainless steel sheet is designed with a bent structure, including a first counterweight section, a connecting section, a contact section, and a second counterweight section. It rotates around a pin. The length of the contact section is greater than the sum of the lengths of the other sections. The angle is designed to reduce friction and increase support, ensuring that the pork remains in contact during the process.
It solves the problem of small pieces of pork sticking together behind the X-ray machine, improves throughput, is suitable for pork of different sizes, reduces the need for stacking, and ensures smooth inspection.
Smart Images
Figure CN224247630U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of pork testing, and in particular to an X-ray machine protective curtain device and a food X-ray machine. Background Technology
[0002] As people have higher requirements for the quality and safety of food and everyday industrial products, food X-ray machines have been widely used.
[0003] When an X-ray machine is operating, X-rays are emitted from inside the equipment and penetrate the product being inspected. Because X-rays diffusely reflect when they hit material, some X-rays radiate outwards from the machine. X-rays are harmful to the human body, and qualified X-ray machines have strict requirements for X-ray protection. Conventional X-ray machines use protective curtains at the conveyor inlet and outlet, made from a special mixing and calendering process of radiation-absorbing metal powder and resin. These curtains are lightweight, flexible, and meet the requirements for food-grade contact materials. However, when X-ray machines inspect meat products, the meat products rubbing against the protective curtain for extended periods can damage it. Prolonged contact with grease can also harden the curtain, altering its material properties. Furthermore, the curtains are difficult to clean and can easily harbor bacteria, affecting the quality of the inspected product.
[0004] In response, some existing technologies address this issue by changing the protective curtain to stainless steel. For example, Chinese patent CN209784223U discloses a protective curtain device for X-ray machines. Its protective curtain module includes multiple stainless steel baffles arranged side by side and mounting shafts. The upper end of the stainless steel baffles is provided with a rotating unit. By using stainless steel baffles to form a protective curtain device, it is possible to effectively prevent oil stains from causing adverse effects on the protective curtain body and avoid problems such as aging, delamination, and deformation.
[0005] However, with the increasing demand for small-packaged pork products on the market, in order to solve the food safety problem after secondary cutting, some production lines considered setting the secondary switching before X-ray inspection. However, after testing, it was found that the small pieces of pork stuck together after passing through the X-ray machine, which was not conducive to subsequent processing. Utility Model Content
[0006] When pork is small in volume and weight, the friction between the small pieces of pork and the conveyor belt is small. When using existing stainless steel protective curtain devices, the pork has poor passage. Often, many small pieces of pork need to pile up before they can break through the protective curtain, which causes the small pieces of pork to stick together after passing through the X-ray machine. This is not conducive to subsequent processing. Therefore, the purpose of this utility model is to provide an X-ray machine protective curtain device and a food X-ray machine to solve the problem of pork sticking.
[0007] The objective of this utility model can be achieved through the following technical solutions:
[0008] An X-ray machine protective curtain device, comprising:
[0009] The support has an opening at the bottom for material to pass through;
[0010] A stainless steel protective curtain, located at the opening, includes a pin and multiple stainless steel sheets, all of which are fitted onto the pin and passively rotate around it.
[0011] The stainless steel sheet is formed by bending a single steel sheet and includes a first counterweight section, a connecting section, a contact section, and a second counterweight section arranged sequentially. The connecting section is provided with a connecting lug, and the connecting lug is provided with a through hole that mates with the pin. The first counterweight section is bent counterclockwise relative to the connecting section, the contact section is bent counterclockwise relative to the connecting section, and the second counterweight section is bent counterclockwise relative to the contact section. The counterclockwise direction is the direction in which the material conveying direction is relative to the circumferential direction of the pin.
[0012] The length of the contact segment is greater than the sum of the length of the first counterweight segment, the connecting segment, and the second counterweight segment.
[0013] The included angle between the contact section and the connecting section is less than 165 degrees.
[0014] The length of the second counterweight section is less than that of any one of the first counterweight section, the connecting section, and the contact section.
[0015] In its natural state, the distance between the bottom of the stainless steel sheet and the conveyor belt is less than 3 mm.
[0016] The angle between the contact section and the second counterweight section is less than 110 degrees.
[0017] In its natural state, the stainless steel sheet has an angle of 5-10 degrees between the second counterweight section and the horizontal plane.
[0018] There are two stainless steel protective curtains, and the bracket has two openings, with the two stainless steel protective curtains located at the two openings respectively.
[0019] The support is also equipped with guide plates, which are located on both sides of the second stainless steel protective curtain, wherein the second stainless steel protective curtain is located downstream along the conveying direction.
[0020] A food X-ray machine includes a protective curtain device as described above.
[0021] Compared with the prior art, the present invention has the following beneficial effects:
[0022] 1. By designing a stainless steel sheet comprising a first counterweight section, a connecting section, a contact section, and a second counterweight section arranged sequentially, and with a large bending angle, the horizontal thrust required by the material on the contact section can be reduced while keeping the pin height constant, thus solving the problem of small pieces of pork sticking together after passing through the X-ray machine.
[0023] 2. The length of the contact section is greater than the sum of the first counterweight section, the connecting section, and the second counterweight section, thus having greater applicability. Even when dealing with large pieces of pork, it can ensure that the contact between the pork and the stainless steel sheet remains in the contact section throughout the entire stroke. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the structure of the X-ray machine protective curtain device of this utility model;
[0025] Figure 2 This is a schematic diagram of the structure of the food X-ray machine of this utility model;
[0026] Figure 3 This is a schematic diagram of the structure of a single stainless steel sheet;
[0027] The components are: 1. Support, 2. Guide plate, 3. Pin, 4. Stainless steel sheet, 5. X-detection host, 6. Conveyor belt, 7. Detection product, 4-1. First counterweight section, 4-2. Connecting section, 4-3. Contact section, 4-4. Second counterweight section, 4-5. Steel sheet center of gravity, 4-2-1. Connecting lug. Detailed Implementation
[0028] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.
[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0030] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "proximal end," "farthest end," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Physical quantities in formulas, unless otherwise specified, should be understood as basic quantities of the International System of Units (SI) base units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.
[0031] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0032] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 based on the specific circumstances.
[0033] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.
[0034] An X-ray machine protective curtain device, such as Figure 1 As shown, it includes:
[0035] Support 1, with an opening at the bottom for material passage;
[0036] A stainless steel protective curtain, located at the opening, includes a pin 3 and multiple stainless steel sheets 4. All stainless steel sheets 4 are fitted onto the pin 3 and passively rotate around the pin 3.
[0037] like Figure 3As shown, the stainless steel sheet 4 is formed by bending a single steel sheet and includes a first counterweight section 4-1, a connecting section 4-2, a contact section 4-3, and a second counterweight section 4-4 arranged sequentially. The connecting section 4-2 is provided with a connecting lug 4-2-1, which has a through hole that mates with the pin 3. The first counterweight section 4-1 is bent counterclockwise relative to the connecting section 4-2, the contact section 4-3 is bent counterclockwise relative to the connecting section 4-2, and the second counterweight section 4-4 is bent counterclockwise relative to the contact section 4-3. The counterclockwise direction is the direction in which the material conveying direction surrounds the pin 3. In its natural state, the center of gravity 4-5 of the steel sheet, which is the center of gravity of the stainless steel sheet 4, is on the same vertical line as the through hole on the connecting lug 4-2-1.
[0038] By designing the stainless steel sheet 4, which includes a first counterweight section 4-1, a connecting section 4-2, a contact section 4-3, and a second counterweight section 4-4 arranged sequentially, and with a large bending angle, the horizontal thrust required by the material on the contact section 4-3 can be reduced while keeping the pin height constant. This solves the problem of small pieces of pork sticking together after passing through the X-ray machine. The specific principle is as follows:
[0039] When the pork comes into contact with the contact section 4-3 of the stainless steel sheet 4, the force F exerted by the pork on the contact section 4-3 is perpendicular to the surface of the contact section 4-3. This force F can be decomposed into a component along the pork conveying direction and a vertically upward component. Corresponding to the pork, the magnitude of the component along the pork conveying direction is equal to the frictional force between the pork and the conveyor belt, while the vertically upward component is equal to the supporting force of the conveyor belt on the pork. On the one hand, because the contact section 4-3 has a large inclination angle, the required frictional force is smaller under the same force F. On the other hand, because the supporting force of the conveyor belt on the pork is objectively increased, the pressure between the pork and the conveyor belt is also increased, which increases the upper limit of static friction. Thus, small pieces of pork can easily push away the stainless steel protective curtain without waiting for large pieces of small pork to accumulate, thereby solving the problem of adhesion when small pieces of pork are detected.
[0040] In most embodiments, the length of the contact segment 4-3 is greater than the sum of the lengths of the first counterweight segment 4-1, the connecting segment 4-2, and the second counterweight segment 4-4, thus providing greater applicability. Even when dealing with large pieces of pork, it ensures that the contact between the pork and the stainless steel sheet 4 remains at the contact segment 4-3 throughout the entire stroke.
[0041] Generally, the included angle between the contact section 4-3 and the connecting section 4-2 is less than 165 degrees. In addition, the length of the second counterweight section 4-4 is less than any of the first counterweight section 4-1, the connecting section 4-2, and the contact section 4-3.
[0042] Generally, in most embodiments, the distance between the bottom of the stainless steel sheet 4 and the conveyor belt is less than 3 mm in its natural state, the angle between the contact section 4-3 and the second counterweight section 4-4 is less than 110 degrees, and the angle between the second counterweight section 4-4 and the horizontal plane is 5-10 degrees in its natural state. The setting of this angle is related to the size of the pork piece; the larger the pork piece, the larger the angle.
[0043] like Figure 1 As shown, there are two stainless steel protective curtains. The bracket 1 has two openings, and the two stainless steel protective curtains are located at the two openings respectively. Similar to the prior art, the bracket 1 is also provided with a guide plate 2, which is located on both sides of the second stainless steel protective curtain. The second stainless steel protective curtain is located downstream along the conveying direction.
[0044] In addition, this application also provides a food X-ray machine, such as Figure 2 As shown, the device includes the protective curtain device described above. The product 7 to be tested is a small piece of pork, which is conveyed by the conveyor belt 6. The X detection host is set on the protective curtain device to test the small piece of pork.
Claims
1. An X-ray machine protective curtain device, comprising: The support (1) has an opening at the bottom for material to pass through; A stainless steel protective curtain is provided at the opening and includes a pin (3) and multiple stainless steel sheets (4). All stainless steel sheets (4) are sleeved on the pin (3) and passively rotate around the pin (3). The stainless steel sheet (4) is characterized in that it is formed by bending a piece of steel sheet and includes a first counterweight section (4-1), a connecting section (4-2), a contact section (4-3), and a second counterweight section (4-4) arranged in sequence. The connecting section (4-2) is provided with a connecting lug (4-2-1), and the connecting lug (4-2-1) is provided with a through hole that cooperates with the pin (3). The first counterweight section (4-1) is bent counterclockwise relative to the connecting section (4-2), the contact section (4-3) is bent counterclockwise relative to the connecting section (4-2), and the second counterweight section (4-4) is bent counterclockwise relative to the contact section (4-3). The counterclockwise direction is the direction of material conveying relative to the circumferential direction of the pin (3).
2. The X-ray machine protective curtain device according to claim 1, characterized in that, The length of the contact section (4-3) is greater than the sum of the lengths of the first counterweight section (4-1), the connecting section (4-2), and the second counterweight section (4-4).
3. The X-ray machine protective curtain device according to claim 1, characterized in that, The included angle between the contact section (4-3) and the connecting section (4-2) is less than 165 degrees.
4. The X-ray machine protective curtain device according to claim 1, characterized in that, The length of the second counterweight section (4-4) is less than any of the first counterweight section (4-1), the connecting section (4-2), and the contact section (4-3).
5. The X-ray machine protective curtain device according to claim 1, characterized in that, In its natural state, the stainless steel sheet (4) has a bottom distance of less than 3 mm from the conveyor belt.
6. The X-ray machine protective curtain device according to claim 1, characterized in that, The angle between the contact section (4-3) and the second counterweight section (4-4) is less than 110 degrees.
7. The X-ray machine protective curtain device according to claim 1, characterized in that, In its natural state, the stainless steel sheet (4) has a second counterweight section (4-4) with an angle of 5-10 degrees with the horizontal plane.
8. The X-ray machine protective curtain device according to claim 1, characterized in that, There are two stainless steel protective curtains. The bracket (1) has two openings, and the two stainless steel protective curtains are located at the two openings respectively.
9. The X-ray machine protective curtain device according to claim 8, characterized in that, The bracket (1) is also provided with a guide plate, which is located on both sides of the second stainless steel protective curtain, wherein the second stainless steel protective curtain is a stainless steel protective curtain located downstream along the conveying direction.
10. A food X-ray machine, characterized in that, Includes the protective curtain device as described in any one of claims 1-9.