Auger powder particle sampling valve

Abstract

The auger powder particle sampling valve comprises a valve body, an auger, an extension pipe and an actuating assembly, the actuating assembly is installed at one end of the valve body, a flange is arranged at the other end of the valve body, a collecting opening is formed in the extension pipe, the extension pipe is arranged on the valve body, and the auger is arranged in the extension pipe and connected with the actuating assembly through a coupler. The actuating assembly is used for driving the auger to rotate; the valve body is provided with a discharge port, and the sampling bottle is connected with the discharge port. According to the invention, the auger is matched with the actuating assembly to realize material transmission, and sampling of powder and particles is realized. And in the static state, the materials cannot be continuously conveyed to the discharging opening. In addition, forward and reverse rotation of the auger can control the material transmission direction, selective sampling is achieved, and it is guaranteed that sampled materials have representativeness. The discharge port is provided with the self-closing mechanism, so that the discharge port can be automatically opened and closed, and the sealing performance of the sampling valve is ensured.

Description

Technical Field

[0001] This invention relates to the field of sampling valves, and in particular to a screw conveyor powder particle sampling valve. Background Technology

[0002] Sampling valves are used to take samples during the product manufacturing process to analyze whether the product is up to standard at the current step. However, materials such as powder and granules can diffuse. In conventional sampling structures, after the material is removed, the sampling port remains open, and the powder and granules inside will float out of the sampling port. Summary of the Invention

[0003] To address the shortcomings of the existing technology, the main objective of this invention is to overcome these deficiencies and disclose a screw conveyor powder particle sampling valve, comprising a valve body, a screw conveyor, an extension tube, and an actuation assembly. The actuation assembly is installed at one end of the valve body, and a flange is provided at the other end of the valve body. A collection opening is provided on the extension tube, which is located on the valve body. The screw conveyor is placed inside the extension tube and connected to the actuation assembly via a coupling, thereby driving the screw conveyor to rotate. A discharge port is provided on the valve body, and a sampling bottle is connected to the discharge port.

[0004] Furthermore, the extension tube is tightly fitted with the valve body.

[0005] Furthermore, the actuation component includes a motor or a hand crank.

[0006] Furthermore, the coupling includes a connecting member, a first bearing, and a second bearing. The two ends of the connecting member are respectively provided with a first connecting groove and a second connecting groove, and one end of the connecting member is provided with a radially protruding guide edge. The first bearing is disposed between the valve body and the guide edge, and the second bearing is disposed between the actuation assembly and the guide edge. The first connecting groove and the second connecting groove are respectively connected to the actuation assembly and the auger.

[0007] Furthermore, the actuation component is keyed to the connector.

[0008] Furthermore, the coupling also includes a pin, and corresponding pin holes are provided on one end of the auger and the connecting member, so as to connect the auger and the connecting member through the pin.

[0009] Furthermore, the sampling bottle is threadedly fitted to the valve body.

[0010] Furthermore, a self-closing mechanism is provided on the valve body to open and close the discharge port.

[0011] Furthermore, the self-closing mechanism includes a sealing component, a floating sleeve, and a spring. The discharge port has a recessed connecting cavity, and a guide tube is provided inside the connecting cavity. The floating sleeve is slidably connected to the guide tube. The spring provides axial driving force to the floating sleeve. The sealing component is located at the discharge port. When closed, the sealing component seals against the floating sleeve.

[0012] Furthermore, the sealing component includes a fixing member, a connecting rod, and an end cap. The end cap is connected to the fixing member through the connecting rod. The fixing member is disposed inside the discharge port and has several through-holes.

[0013] The beneficial effects achieved by this invention are as follows:

[0014] This invention employs an auger in conjunction with an actuator to achieve material transmission and sample powders and granules. In a stationary state, material cannot continue to be conveyed towards the discharge port. Furthermore, the forward and reverse rotation of the auger controls the material transmission direction, enabling selective sampling and ensuring the representativeness of the sampled material. A self-closing mechanism at the discharge port allows for automatic opening and closing, ensuring the sealing of the sampling valve. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a screw conveyor powder particle sampling valve according to the present invention;

[0016] Figure 2 This is a cross-sectional view of a screw conveyor powder particle sampling valve according to the present invention.

[0017] Figure 3 for Figure 2 Enlarged view of A in the middle;

[0018] Figure 4 A schematic diagram showing the cooperation between the self-closing mechanism and the valve body outlet.

[0019] Figure 5 for Figure 4 Top view;

[0020] Figure 6 For Figure 5 Sectional view of AA.

[0021] Figure 7 This is a schematic diagram of the structure of a screw conveyor powder particle sampling valve of the present invention using a hand crank;

[0022] The attached figures are labeled as follows:

[0023] 1. Valve body, 2. Screwdriver, 3. Extension tube, 4. Actuation assembly, 5. Coupling, 6. Sampling bottle, 7. Self-closing mechanism, 11. Discharge port, 12. Flange, 13. Guide tube, 14. Limit ring.

[0024] 31. Collect the opening.

[0025] 51. Connector; 52. First bearing; 53. Second bearing; 54. Pin; 511. Guide edge; 512. First connecting groove; 513. Second connecting groove.

[0026] 71. Sealing component; 72. Floating sleeve; 73. Spring.

[0027] 711. Fixing component; 712. Connecting rod; 713. End cap; 714. Material passage hole. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0029] A screw conveyor powder particle sampling valve, such as Figures 1-3 As shown, the device includes a valve body 1, an auger 2, an extension tube 3, and an actuation assembly 4. The valve body 1 has an axially penetrating mounting cavity and a discharge port 11 on its side wall. The actuation assembly 4 is mounted at one end of the valve body 1, and a flange 12 is located at the other end. A collection opening 31 is provided on the extension tube 3, which is mounted on the valve body 1. The auger 2 is placed inside the extension tube 3 and connected to the actuation assembly 4 via a coupling 5, allowing the actuation assembly 4 to drive the auger 2 to rotate. A sampling bottle 6 is connected to the discharge port 11. Material is collected through the collection opening on the extension tube 3. The auger 2 drives the material on the extension tube 3 to move axially. After entering the mounting cavity, the material is discharged from the discharge port 11 into the sampling bottle.

[0030] In one embodiment, such as Figures 1-3 As shown, the extension tube 3 is tightly fitted with the valve body 1. Specifically, the inner diameter of the extension tube 3 is the same as the inner diameter of the mounting cavity to form a conveying channel connecting to the discharge port 11.

[0031] In one embodiment, such as Figure 1 and Figure 7 As shown, the actuation component 4 includes a motor or a hand crank. The actuator 4 is used to power the auger. The actuation component 4 is a conventional device and will not be described in detail here.

[0032] In one embodiment, such as Figures 1-3As shown, the coupling 5 includes a connecting member 51, a first bearing 52, and a second bearing 53. The connecting member 51 has a first connecting groove 512 and a second connecting groove 513 recessed at both ends, and a guide flange 511 radially protruding from one end. The first bearing 52 is disposed between the valve body 1 and the guide flange 511, and the second bearing 53 is disposed between the actuation assembly 4 and the guide flange 511. Through this structure, the coupling 5 is rotatably connected to the valve body 1. The first connecting groove 512 and the second connecting groove 513 are respectively connected to the actuation assembly 4 and the auger 2.

[0033] In the above embodiments, such as Figures 1-3 As shown, the actuation assembly 4 is keyed to the connector 51. Specifically, a keyway corresponding to the first connecting groove 512 is provided on the output shaft of the actuation assembly 4, thereby enabling connection via a key. Alternatively, a spline can be provided on the output shaft, and correspondingly, a keyway is provided within the first connecting groove 512.

[0034] In one embodiment, such as Figures 1-3 As shown, the coupling 5 also includes a pin 54. Corresponding pin holes are provided on one end of the auger 2 and the connector 51, and the auger 2 and the connector 51 are connected by the pin 54.

[0035] In one embodiment, such as Figures 1-3 As shown, the sampling bottle 6 is threadedly fitted to the valve body 1.

[0036] In one embodiment, such as Figures 1-6 As shown, a self-closing mechanism 7 is provided on the valve body 1, which is used to open and close the discharge port 11.

[0037] Specifically, the self-closing mechanism 7 includes a sealing element 71, a floating sleeve 72, and a spring 73. The discharge port 11 has a recessed connecting cavity, within which a guide tube 13 is installed. The floating sleeve 72 is slidably connected to the guide tube 13. The spring 73 provides axial driving force to the floating sleeve 72. The sealing element 71 is located at the discharge port 11; when closed, the sealing element 71 seals against the floating sleeve 72. During assembly, the spring 73 and the floating sleeve 72 are fitted onto the guide tube 13, connecting the limiting ring 14 to the guide tube 13 to prevent the floating sleeve 72 from slipping off the guide tube 13. Finally, the sealing element 71 is installed, fixed to the valve body 1, and ensuring that the floating sleeve 72 acts on the sealing element 71, achieving a seal between the floating sleeve 72 and the sealing element 71.

[0038] In the above embodiments, such as Figures 1-6As shown, the sealing component 71 includes a fixing member 711, a connecting rod 712, and an end cap 713. The end cap 713 is connected to the fixing member 711 via the connecting rod 712. The fixing member 711 is disposed inside the discharge port 11, and has several through-holes 714. Specifically, the fixing member 711 is connected to the discharge port 11 by a tight fit or a threaded fit. After the material enters the discharge port 11, it flows through the through-holes 714 into the sampling bottle 6.

[0039] In the above embodiments, such as Figures 1-6 As shown, the end cap 713 has a conical structure. The material is guided to slide into the sampling bottle 6 by the side walls of the conical structure.

[0040] When using the self-closing mechanism 7, such as Figures 1-6 As shown, when the sampling bottle 6 is connected to the valve body 1, the sampling bottle 6 contacts the floating sleeve 72, pushing the floating sleeve 72 upward. The floating sleeve 72 separates from the end cap 712, forming an opening, and the material flows into the sampling bottle 6 from the opening. When the sampling bottle 6 is removed, the floating sleeve 72 is subjected to the restoring force of the spring 73, causing the floating sleeve 72 to adhere tightly to the side wall of the end cap 713, thereby closing the discharge port 11.

[0041] When using this invention, as Figures 1-6 As shown, the actuating component 4 drives the auger 2 to rotate, conveying the material towards the discharge port. When the actuating component 4 stops, the auger 2 and the valve body 1 remain stationary, and the material can no longer move towards the discharge port 11. After the sampling bottle 6 is removed, the self-closing mechanism 7 closes, and the sampling valve is in a sealed state to prevent material leakage.

[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Any modifications or equivalent substitutions made to the present invention without departing from the spirit and scope thereof should be covered within the protection scope of the claims of the present invention.

Claims

1. A screw conveyor powder particle sampling valve, characterized in that, The device includes a valve body, an auger, an extension tube, and an actuation assembly. The actuation assembly is installed at one end of the valve body, and a flange is provided at the other end of the valve body. A collection opening is provided on the extension tube, which is located on the valve body. The auger is placed inside the extension tube and connected to the actuation assembly via a coupling. The actuation assembly drives the auger to rotate. A discharge port is provided on the valve body, and a sampling bottle is connected to the discharge port.

2. The auger powder particle sampling valve according to claim 1, characterized in that, The extension tube is tightly fitted to the valve body.

3. The auger powder particle sampling valve according to claim 1, characterized in that, The actuation component includes a motor or a hand crank.

4. The auger powder particle sampling valve according to claim 1, characterized in that, The coupling includes a connector, a first bearing, and a second bearing. The two ends of the connector are respectively provided with a first connecting groove and a second connecting groove, and one end of the connector is provided with a radially protruding guide flange. The first bearing is disposed between the valve body and the guide flange, and the second bearing is disposed between the actuation assembly and the guide flange. The first connecting slot and the second connecting slot are respectively connected to the actuation component and the auger.

5. The auger powder particle sampling valve according to claim 4, characterized in that, The actuation component is keyed to the connector.

6. The auger powder particle sampling valve according to claim 4, characterized in that, The coupling also includes a pin, and corresponding pin holes are provided on one end of the auger and the connecting member, and the auger and the connecting member are connected by the pin.

7. The auger powder particle sampling valve according to claim 1, characterized in that, The sampling bottle is threadedly fitted to the valve body.

8. The auger powder particle sampling valve according to claim 1, characterized in that, The valve body is equipped with a self-closing mechanism, which is used to open and close the discharge port.

9. A screw conveyor powder particle sampling valve according to claim 8, characterized in that, The self-closing mechanism includes a sealing component, a floating sleeve, and a spring. The discharge port has a recessed connecting cavity, and a guide tube is provided inside the connecting cavity. The floating sleeve is slidably connected to the guide tube. The spring provides axial driving force to the floating sleeve. The sealing component is located at the discharge port. When closed, the sealing component seals against the floating sleeve.

10. A screw conveyor powder particle sampling valve according to claim 9, characterized in that, The sealing component includes a fixing component, a connecting rod, and an end cap. The end cap is connected to the fixing component via the connecting rod. The fixing component is disposed inside the discharge port and has several through-holes.

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