Noise reduction type Canadian type sample splitter
By introducing a buffer component and optimizing the structure in the Canadian-style sampler, the problems of high noise and uneven sample distribution were solved, achieving the effects of noise reduction and improved sample distribution accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 中央储备粮周口直属库
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-21
AI Technical Summary
Traditional Canadian-style samplers generate significant noise when materials fall at high speeds, affecting operator health and equipment lifespan, and their sampling accuracy is not high.
The system employs a buffer assembly, including a buffer baffle and an elastic support, which absorbs the impact energy of the material through elastic deformation, reducing noise. Furthermore, by optimizing the structural design of the feed hopper and the distribution hopper, it ensures uniform material distribution.
It effectively reduces noise, improves the working environment, increases sample separation accuracy and equipment lifespan, and ensures sample representativeness.
Smart Images
Figure CN224152140U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of sample divider technology, and more specifically to a noise-reducing Canadian-type sample divider. Background Technology
[0002] In the field of bulk material testing (such as grains), the homogeneity of sample mixing is a core prerequisite for ensuring the accuracy of test results. To achieve uniform sampling, a sampler is commonly used to perform multiple reductions and mixing of the original material. Among these, the Canadian-style sampler has become the mainstream equipment due to its simple structure and efficient operation. Its traditional structure consists of a sampling cylinder, a feed hopper, and a distribution hopper. It relies on the free fall of the material due to gravity, and the distribution hopper evenly distributes the material to multiple outlets, thereby obtaining statistically representative reduced samples. However, the traditional Canadian-style sampler has the following technical problems in practical applications:
[0003] When materials fall at high speed, they collide with the feed hopper and distribution hopper inside the sampling cylinder, resulting in significant noise. This noise negatively impacts the working environment of operators. Long-term exposure to high noise levels may cause hearing damage, fatigue, and decreased work efficiency. It may also damage the equipment, potentially causing deformation after prolonged use, affecting sampling accuracy and the equipment's lifespan.
[0004] Therefore, how to provide a noise-reducing Canadian-style sample divider that can effectively reduce noise during use while ensuring uniform sample distribution is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content
[0005] In view of this, the present invention provides a noise-reducing Canadian-style sampler, which aims to solve the above-mentioned technical problems.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] A noise-reducing Canadian-style sample divider includes a sample dividing cylinder, wherein an inlet hopper and a dispensing hopper are fixedly fixed inside the sample dividing cylinder from top to bottom; it also includes a buffer assembly located above the inlet hopper;
[0008] The buffer assembly includes buffer baffles and elastic supports. There are multiple buffer baffles, one end of which is arranged circumferentially along the sample dispensing cylinder and hinged to the side wall of the sample dispensing cylinder, and the other end of each buffer baffle is contracted towards the central axis of the sample dispensing cylinder and sealed against it. One end of the elastic support is hinged to the side wall of the feed hopper, and the other end is slidably connected to the side wall of the buffer baffle.
[0009] As can be seen from the above technical solution, compared with the prior art, the noise-reducing Canadian-style sampler disclosed in this utility model uses a buffer baffle to absorb the impact energy of the material through elastic deformation, transforming direct impact into flexible buffering, reducing direct collision between the material and the internal structure of the sampler cylinder, effectively reducing noise, improving the working environment, and at the same time, the elastic support allows the buffer baffle to dynamically adjust its angle according to the material flow rate, adapting to the impact of materials of different particle sizes and densities. The dynamic adjustment of the buffer components ensures that the material is more uniform during the sample distribution process, improving the sample distribution accuracy.
[0010] Preferably, in the above-mentioned noise-reducing Canadian-style sampler, the buffer baffle has a groove on its side wall, and the elastic support includes a sliding rod and a spring. One end of the sliding rod is hinged to the side wall of the feed hopper, and the other end is slidably connected in the groove. Both ends of the spring are fixed between the feed hopper and the sliding rod. The sliding design of the sliding rod in the groove allows the buffer baffle to dynamically adjust its position according to the impact force of the material, adapting to the sampling requirements of different materials. The spring automatically resets the buffer baffle, ensuring a stable buffering effect during continuous sampling.
[0011] Preferably, in the aforementioned noise-reducing Canadian-type sample divider, the buffer baffle is made of polyurethane. Polyurethane buffer baffles have good wear resistance and elasticity; the elastic properties of polyurethane can better absorb the impact force of materials, further reducing noise and equipment wear, and its smooth surface reduces material adhesion.
[0012] Preferably, in the above-mentioned noise-reducing Canadian-style sampler, a support plate is fixed to the bottom of the sample dispensing cylinder, and a discharge port is provided on the support plate. The support plate and multiple support frames at the bottom of the sample dispensing cylinder work together to support the sample dispensing cylinder, and the design of the discharge port facilitates the discharge of materials, ensuring that the materials after sampling can be collected smoothly.
[0013] Preferably, the above-mentioned noise-reducing Canadian-style sampler further includes a first receiver and a second receiver. A distributing chute is fixed to the bottom wall of the first receiver, with its top end connected to the outlet end of the distributing hopper and its bottom end connected to the discharge port. The second receiver is located below the support plate. The arrangement of the first and second receivers effectively collects and distributes the sampled material, preventing material accumulation and improving sampling efficiency.
[0014] Preferably, in the above-mentioned noise-reducing Canadian-style sample divider, the feed hopper includes a first conical section and a first cylindrical section. The top diameter of the first conical section is larger than its bottom diameter. The top end of the first cylindrical section is fixed to the bottom end of the first conical section, and the bottom end of the cylindrical section is correspondingly connected to the feed hopper. The design of the first conical section and the first cylindrical section of the feed hopper can better guide the material downward flow, reduce the retention of material in the feed hopper, and improve the sampling efficiency.
[0015] Preferably, in the above-mentioned noise-reducing Canadian-style sampler, a sliding insert plate is horizontally connected within the first cylindrical section. One end of the insert plate extends to the outside of the sample dispensing cylinder and has a pull ring at its end. The insert plate has a through hole communicating with the outlet end of the first cylindrical section. Under external force, the insert plate alternately connects or closes the through hole with the outlet end of the first cylindrical section. The design of the insert plate and pull ring allows the operator to easily control the flow of material. Closing the insert plate achieves instantaneous material cutoff, and the alternating connection or closure of the through hole with the outlet end of the first cylindrical section improves the flexibility of the sample dispensing operation.
[0016] Preferably, in the above-mentioned noise-reducing Canadian-style sample divider, the dispensing hopper includes a second cylindrical section, a second conical section, and a dispensing ring. A conical guide head is fixed to the top of the second cylindrical section, located below the first cylindrical section. The top of the second conical section is fixed to the bottom of the second cylindrical section, and a discharge channel is fixedly connected to the bottom. The dispensing ring is fixed to the outer wall of the top of the second cylindrical section, and its inner side has multiple circumferentially arranged guide channels. The outlet end of the guide channels communicates with the interior of the second cylindrical section. The design of the second cylindrical section, the second conical section, and the dispensing ring of the dispensing hopper enables the material to be evenly distributed to multiple guide channels, ensuring sampling accuracy. The design of multiple guide channels allows the material to enter the second cylindrical section and the second conical section evenly and sequentially, and then be discharged through the discharge channels.
[0017] Preferably, in the above-mentioned noise-reducing Canadian-style sampler, a buffer tube is fitted around the outer side of the first cylindrical section, and there is a gap between the bottom end of the buffer tube and the conical guide head. The buffer tube further buffers the impact force of the material, protects the structure of the hopper, and extends the service life of the equipment. The gap between the buffer tube and the conical guide head ensures that the material can flow smoothly and will not obstruct the falling of the material.
[0018] Preferably, in the aforementioned noise-reducing Canadian-type sampler, the inner wall of the buffer tube has spiral protrusions. These spiral protrusions cause the material to fall in a spiral motion, reducing the impact velocity and further lowering noise.
[0019] As can be seen from the above technical solution, compared with the prior art, this utility model discloses a noise-reducing Canadian-type sample divider, which has the following beneficial effects:
[0020] 1. The articulated polyurethane buffer baffle and the elastic support of this utility model form a "flexible buffer layer", which absorbs impact energy through elastic deformation and effectively reduces impact noise; it improves the working environment of operators. The buffer tube is sleeved on the outside of the first cylindrical section, and the spiral protrusions on its inner sidewall can change the flow direction and speed of the material, so that the material generates a certain buffering effect during the flow process, further reducing noise.
[0021] 2. The dynamic adjustment of the buffer component in this invention ensures more uniform material distribution during the sampling process, improving sampling accuracy and ensuring sample representativeness. This is crucial for subsequent analysis and testing, providing more accurate analytical results.
[0022] 3. The structural design of the feed hopper and the distribution hopper of this utility model (such as the combination of conical and cylindrical sections) as well as the setting of buffer tubes and spiral protrusions optimize the flow path of materials, ensure that materials can flow smoothly and evenly, and reduce material retention and secondary pollution during the sampling process. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0024] Figure 1 The attached figure shows the noise-reducing Canadian-style sampler provided by this utility model;
[0025] Figure 2 The attached image is... Figure 1 The attached figure shows a cross-sectional view (with the buffer baffle in a sealed contact state).
[0026] Figure 3 The attached image is... Figure 1 The attached figure shows a cross-sectional view (with the buffer baffle separated).
[0027] Figure 4 The attached figure is a schematic diagram of the structure of the insert plate provided by this utility model;
[0028] Figure 5 The attached figure is a schematic diagram of the material distribution hopper provided by this utility model;
[0029] Figure 6 The attached figure is a structural schematic diagram of the noise-reducing Canadian-type sampler provided by this utility model, with the first and second receivers removed.
[0030] Figure 7 The attached figure is a structural schematic diagram of the first receiver provided by this utility model;
[0031] Figure 8 The attached figure is a structural schematic diagram of the second receiver provided by this utility model.
[0032] in:
[0033] 1-Sampling cylinder; 2-Feed hopper; 21-First conical section; 22-First cylindrical section; 3-Feeding hopper; 31-Second cylindrical section; 32-Second conical section; 33-Feeding ring; 34-Conical guide head; 35-Discharge channel; 36-Flow guide channel; 4-Buffer assembly; 41-Buffer baffle; 411-Slide groove; 42-Elastic support; 421-Slide rod; 422-Spring; 5-Support plate; 51-Discharge port; 6-First receiver; 7-Second receiver; 8-Insert plate; 9-Buffer tube; 91-Spiral protrusion. Detailed Implementation
[0034] 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.
[0035] See appendix Figure 1 To be continued Figure 8 This utility model discloses a noise-reducing Canadian-style sampler, including a sample distribution cylinder 1, with a feed hopper 2 and a distribution hopper 3 fixed inside the sample distribution cylinder 1 from top to bottom; it also includes a buffer assembly 4 located above the feed hopper 2;
[0036] The buffer assembly 4 includes a buffer baffle 41 and an elastic support 42. There are multiple buffer baffles 41. One end of the multiple buffer baffles 41 is arranged around the sample distribution cylinder 1 and is hinged to the side wall of the sample distribution cylinder 1. The other end of each buffer baffle 41 is contracted towards the central axis of the sample distribution cylinder 1 and is sealed and abutted. One end of the elastic support 42 is hinged to the side wall of the feed hopper 2, and the other end is slidably connected to the side wall of the buffer baffle 41.
[0037] To further optimize the above technical solution, the side wall of the buffer baffle 41 has a groove 411, and the elastic support 42 includes a slide rod 421 and a spring 422. One end of the slide rod 421 is hinged to the side wall of the feed hopper 2, and the other end is slidably connected in the groove 411. The two ends of the spring 422 are connected between the feed hopper 2 and the slide rod 421.
[0038] To further optimize the above technical solution, the stiffness coefficient of spring 422 can meet the requirements of impact force and elastic recovery during use, and the elastic recovery force after all the material has fallen is sufficient to cause the buffer baffle 41 to rebound.
[0039] To further optimize the above technical solution, the buffer baffle 41 is made of polyurethane with a thickness of 8-12mm.
[0040] To further optimize the above technical solution, in this embodiment, there are four buffer baffles 41. When the edges of the four buffer baffles 41 are sealed and abutted against each other, they form a conical structure. Under the action of the material's gravity, after the buffer baffles 41 rotate and separate around the junction point, it is also convenient for the material to fall.
[0041] To further optimize the above technical solution, a support plate 5 is fixed at the bottom of the sample cylinder 1, and a discharge port 51 is opened on the support plate 5.
[0042] To further optimize the above technical solution, a first receiver 6 and a second receiver 7 are also included. A material distribution slide 61 is fixed on the bottom wall of the first receiver 6. The top end of the material distribution slide 61 is connected to the outlet end of the material distribution hopper 3, and the bottom end is connected to the discharge port 51. The second receiver 7 is located below the support plate 5.
[0043] To further optimize the above technical solution, the feed hopper 2 includes a first conical section 21 and a first cylindrical section 22. The top diameter of the first conical section 21 is larger than the bottom diameter. The top end of the first cylindrical section 22 is fixed to the bottom end of the first conical section 21, and the bottom end is connected to the corresponding feed hopper 3.
[0044] To further optimize the above technical solution, a sliding plate 8 is horizontally connected inside the first cylindrical section 22. One end of the sliding plate 8 extends to the outside of the sample tube 1, and a pull ring 81 is provided at the end. A through hole 82 is provided on the sliding plate 8 to communicate with the outlet end of the first cylindrical section 22. Under the action of external force, the sliding plate 8 realizes the alternating communication or closure of the through hole 82 and the outlet end of the first cylindrical section 22.
[0045] To further optimize the above technical solution, a limit stop plate is fixed at the end of the insert plate 8 away from the pull ring 81, which can prevent the insert plate from being pulled out of the first cylindrical section 22 when it is pulled outward.
[0046] To further optimize the above technical solution, the surface of the insert plate 8 is coated with a wear-resistant coating (such as tungsten carbide, 0.2 mm thick).
[0047] To further optimize the above technical solution, the material distribution hopper 3 includes a second cylindrical section 31, a second conical section 32, and a material distribution ring 33. A conical guide head 34 is fixed to the top of the second cylindrical section 31. The conical guide head 34 is located 22 below the first cylindrical section. The top of the second conical section 32 is fixed to the bottom of the second cylindrical section 31. A discharge channel 35 is fixedly connected to the bottom. The material distribution ring 33 is fixed to the outer wall of the top of the second cylindrical section 31, and its inner side has multiple circumferentially arranged guide channels 36. The outlet end of each guide channel 36 is connected to the interior of the second cylindrical section 31.
[0048] It should be noted that the internal structure of the distribution hopper 3 is the same as that of the existing technology. The process of the material entering the distribution hopper and then falling into the first and second receivers is the same as that of the existing technology, and will not be described in detail here.
[0049] To further optimize the above technical solution, the multiple material guide channels 36 can be configured as spiral material guide channels.
[0050] To further optimize the above technical solution, the number of material guide channels 36 is 8-12.
[0051] To further optimize the above technical solution, the outer side of the first cylindrical section 31 is fitted with an inherent buffer tube 9, and there is a gap between the bottom end of the buffer tube 9 and the conical guide head 34.
[0052] To further optimize the above technical solution, the inner wall of the buffer tube 9 has a spiral protrusion 91.
[0053] To further optimize the above technical solution, the buffer tube 9 includes a vertical section and a horn cover. The inner wall of the vertical section has a spiral protrusion. The horn cover is located above the conical guide head 34 and has a gap between it and the conical guide head 34. This structure can effectively prevent material splashing.
[0054] To further optimize the above technical solution, the gap between the horn cover and the conical guide head 34 is 5-10mm.
[0055] To further optimize the above technical solution, the pitch of the spiral protrusion 91 is 50mm and the height is 8mm to avoid excessive material flow resistance. The specific pitch can also be determined according to the actual situation.
[0056] To further optimize the above technical solution, the sample tube 1 is a detachable cylindrical structure, consisting of an upper cylinder and a lower cylinder. The upper cylinder and the lower cylinder are detachably connected by a locking buckle, as shown in Figure 6.
[0057] To further optimize the above technical solution and to further reduce noise, rigid sponges are bonded to the components that come into contact with the material, such as the conical guide head 34, the guide channel 36, the first receiver 6, and the second receiver 7.
[0058] The embodiments of this utility model are as follows:
[0059] In use, the material to be sampled is poured in from the top of the sampling cylinder 1. The material first contacts the buffer baffle 41. Under the impact of the material's gravity, the buffer baffle 41 rotates around the hinge point, compressing the spring 422 of the elastic support 42. The slide rod 421 slides in the slide groove 411, forming a dynamic guide channel to absorb impact energy and reduce noise. After being guided by the buffer assembly 4, the material enters the first conical section 21 of the feed hopper 2. After being initially dispersed by the first conical section 21, it flows into the first cylindrical section 22. The insert plate 8 passes through the pull ring 8. 1. Adjust the alignment between the through hole 82 and the outlet of the first cylindrical section 22 to control the material flow rate (high flow rate or flow restriction mode); the material falls into the buffer tube 9, is buffered twice by the buffer tube 9, and then enters multiple guide channels 36 evenly through the conical guide head 34, and then enters the second cylindrical section 31, the second conical section 32 and the discharge channel 35 in sequence. It enters the first receiver 6 through the discharge channel 35, and then enters the second receiver 7 through the raised slide 61 and the discharge port 51. Repeat this operation to complete the sample separation.
[0060] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.
[0061] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A noise-reducing Canadian-type sample divider, comprising a sample dividing cylinder (1), the inside of which is sequentially fixed from top to bottom with an inlet hopper (2) and a dividing hopper (3); characterized in that, It also includes a buffer assembly (4) located above the feed hopper (2); The buffer assembly (4) includes a buffer baffle (41) and an elastic support (42). There are multiple buffer baffles (41). One end of each buffer baffle (41) is arranged circumferentially along the sample distribution cylinder (1) and is hinged to the side wall of the sample distribution cylinder (1). The other end of each buffer baffle (41) is retracted towards the central axis of the sample distribution cylinder (1) and abuts against it. One end of the elastic support (42) is hinged to the side wall of the feed hopper (2), and the other end is slidably connected to the side wall of the buffer baffle (41).
2. A noise reducing Canadian divider according to claim 1, characterized in that The buffer baffle (41) has a groove (411) on its side wall. The elastic support (42) includes a slide rod (421) and a spring (422). One end of the slide rod (421) is hinged to the side wall of the feed hopper (2), and the other end is slidably connected in the groove (411). The two ends of the spring (422) are connected between the feed hopper (2) and the slide rod (421).
3. A noise reducing Canadian divider according to claim 2, characterised in that The buffer baffle (41) is made of polyurethane.
4. A noise reducing Canadian divider according to claim 1, characterized in that The bottom of the sample tube (1) is fixed with a support plate (5), and the support plate (5) has a discharge port (51).
5. A noise reducing Canadian divider according to claim 4, characterised in that, It also includes a first receiver (6) and a second receiver (7). The bottom wall of the first receiver (6) is fixed with a material distribution chute (61). The top end of the material distribution chute (61) is connected to the outlet end of the material distribution hopper (3), and the bottom end is connected to the discharge port (51). The second receiver (7) is located below the support plate (5).
6. A noise reducing Canadian divider according to claim 1, characterized in that The feed hopper (2) includes a first conical section (21) and a first cylindrical section (22). The top diameter of the first conical section (21) is larger than the bottom diameter. The top end of the first cylindrical section (22) is fixed to the bottom end of the first conical section (21), and the bottom end is connected to the feed hopper (3).
7. A noise reducing Canadian divider according to claim 6, characterised in that A sliding plate (8) is horizontally connected inside the first cylindrical section (22). One end of the sliding plate (8) extends to the outside of the sample tube (1) and a pull ring (81) is provided at the end. A through hole (82) communicating with the outlet end of the first cylindrical section (22) is provided on the sliding plate (8). Under the action of external force, the sliding plate (8) realizes the alternating communication or closure of the through hole (82) and the outlet end of the first cylindrical section (22).
8. A noise reducing Canadian divider according to claim 6, characterized in that The material distribution hopper (3) includes a second cylindrical section (31), a second conical section (32), and a material distribution ring (33). A conical guide head (34) is fixed to the top of the second cylindrical section (31). The conical guide head (34) is located below the first cylindrical section. The top of the second conical section (32) is fixed to the bottom of the second cylindrical section (31). A discharge channel (35) is fixedly connected to the bottom. The material distribution ring (33) is fixed to the outer wall of the top of the second cylindrical section (31), and its inner side has multiple circumferentially arranged guide channels (36). The outlet end of each guide channel (36) is connected to the interior of the second cylindrical section (31).
9. A noise reducing Canadian divider according to claim 8, characterised in that, The outer side of the first cylindrical section is sleeved with a buffer tube (9), and a gap is formed between the bottom end of the buffer tube (9) and the tapered material guide head (34).
10. A noise reducing Canadian divider according to claim 9, characterised in that, The inner side wall of the buffer tube (9) is provided with a spiral protrusion (91).