Valve port screw air extractor

Abstract

The application relates to the technical field of valve port screw air extraction scale discharge pipe clamping, and discloses a valve port screw air extraction scale, which comprises a rack, a discharge pipe and clamping blocks, the discharge pipe is horizontally arranged on the rack; the clamping blocks are arranged in pairs, the discharge pipe is arranged between the clamping blocks; and the clamping blocks are driven by a driving unit to move close to or away from each other. The application has the effect of reducing the shaking and dislocation of the discharge pipe.

Description

Technical Field

[0001] This application relates to the field of valve port spiral vacuum scale discharge pipe clamping technology, and in particular to a valve port spiral vacuum scale. Background Technology

[0002] The valve-type screw conveyor scale is a key piece of equipment widely used for the automatic quantitative packaging and filling of powdery or fine granular materials. This equipment typically includes a frame and a discharge pipe mounted on the frame, inside which is a screw conveyor mechanism for transporting the material. During operation, the material is pushed into the packaging bag at the end of the discharge pipe by the rotation of the screw conveyor mechanism, thus achieving precise quantitative feeding. To accommodate valve bags and ensure sufficient material delivery into the bag, the discharge pipe usually has a relatively long horizontal extension.

[0003] In existing technology, the basic workflow of the aforementioned equipment is as follows: a power mechanism drives a screw conveyor located inside the discharge pipe to rotate, continuously pushing material from the inlet to the outlet. Simultaneously, the operator places a valve bag onto the end of the discharge pipe, and the material is filled into the bag under the push of the screw blades. To improve packaging efficiency and cleanliness, the equipment often integrates an extraction system to remove dust generated during the filling process and maintain a clean working environment.

[0004] However, when the screw conveyor rotates and pushes material inside the pipe, it is subject to the combined effects of the material's reaction force and the centrifugal force generated by the mechanism's own rotation. This can easily induce harmful vibrations or shaking in the entire discharge pipe system. This shaking directly causes intermittent contact and scraping between the screw conveyor blades and the inner wall of the discharge pipe. Long-term scraping not only produces harsh noise and accelerates the wear of the screw blades and pipe wall, reducing the service life of key components, but may also increase the driving load of the equipment due to increased frictional resistance, affecting metering accuracy and ultimately restricting the improvement of the overall performance and reliability of the equipment. Utility Model Content

[0005] To reduce the vibration and misalignment of the discharge pipe, this application provides a valve port spiral suction scale.

[0006] The valve port spiral vacuum scale provided in this application adopts the following technical solution: A valve-type spiral suction scale includes a frame, a discharge pipe, and a clamping block, wherein: The discharge pipe is horizontally mounted on the frame; The clamping blocks are provided in pairs, and the discharge pipe is placed between the pair of clamping blocks; The clamping blocks move closer or further apart from each other via a drive unit.

[0007] Optionally, the clamping block has an arc surface on the side near the discharge pipe that fits against the wall of the discharge pipe.

[0008] Optionally, the drive unit includes a mounting bracket and a linear drive element, wherein: The mounting bracket is installed on the frame; The linear drive is mounted on the mounting bracket, and the push rod of the linear drive is connected to the clamping block.

[0009] Optionally, the push rod end of the linear drive is provided with a push block; The clamping block has a placement plane on the side near the pushing block.

[0010] Optionally, the placement plane is provided with multiple positioning screws; The push block is provided with a positioning hole for the positioning screw to pass through; The push block slides with the positioning screw through the positioning hole.

[0011] Optionally, the mounting bracket includes a connecting plate and a placement plate, wherein: The connecting plate is horizontally mounted on the frame; The placement plate is disposed on the connecting plate and is perpendicular to the connecting plate; The linear drive component is mounted on the connecting plate.

[0012] Optionally, the linear drive component is a cylinder.

[0013] Optionally, the placement plate is provided with a waist-shaped groove, the length of which is consistent with the length direction of the cylinder; A bolt passes through the cylinder and the placement plate, and a nut is threaded onto the bolt. The bolt passes through the waist-shaped groove, and the width of the waist-shaped groove is slightly larger than the diameter of the bolt thread.

[0014] In summary, this application includes at least one of the following beneficial technical effects: 1. By fully clamping the arc surface of the clamping block to the outer wall of the discharge pipe, the structural rigidity of the discharge pipe is significantly enhanced, the vibration generated during the screw conveying of materials is suppressed, the friction between the auger and the pipe wall is reduced, and noise and component wear are reduced. 2. The cylinder achieves linear adjustment of the installation position through the cooperation of the waist groove and bolt, which facilitates quick alignment of the push rod and the clamping mechanism, avoids uneven load, ensures uniform transmission of clamping force, and improves the system's adaptability and ease of operation. 3. The sliding fit between the positioning screw and the push block, combined with the stable drive of the cylinder, ensures smooth and reliable clamping action. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0016] Figure 2 This is a schematic diagram illustrating the relative positions of the clamping block and the linear drive component in an embodiment of this application.

[0017] Explanation of reference numerals in the attached figures: 1. Frame; 2. Discharge pipe; 3. Clamping block; 31. Arc surface; 32. Placement plane; 33. Positioning screw; 34. Positioning nut; 4. Drive unit; 41. Mounting bracket; 411. Connecting plate; 412. Placement plate; 42. Linear drive component; 421. Push block. Detailed Implementation

[0018] The following is in conjunction with the appendix Figures 1-2 This application will be described in further detail.

[0019] This application discloses a valve-mouth spiral suction scale.

[0020] A valve-type spiral suction scale includes a frame 1, a discharge pipe 2, and a pair of clamping blocks 3. The discharge pipe 2 is horizontally mounted on the frame 1. The pair of clamping blocks 3 are arranged on both sides of the discharge pipe 2, with the discharge pipe 2 positioned between the pair of clamping blocks 3. The clamping blocks 3 are connected to a drive unit 4, which can drive the pair of clamping blocks 3 to move closer to or further away from each other.

[0021] During equipment operation, when the screw conveyor starts and begins pushing materials, the drive unit 4 simultaneously activates, driving a pair of clamping blocks 3 to move closer together until they firmly clamp the discharge pipe 2 from both sides. This clamping state is maintained throughout the entire material conveying process to counteract the vibration generated by the screw conveyor. After packaging is completed and the screw conveyor stops operating, the drive unit 4 drives the clamping blocks 3 to move away from each other, releasing the clamping state on the discharge pipe 2 to facilitate subsequent operations. By actively clamping the discharge pipe 2, the vibration amplitude of the discharge pipe 2 can be effectively limited.

[0022] An arc surface 31 is provided on the side of the clamping block 3 near the discharge pipe 2. The curvature of the arc surface 31 is adapted to the outer contour of the wall of the discharge pipe 2, so that when the clamping block 3 performs the clamping action, its arc surface 31 can form a large area of ​​contact with the outer surface of the wall of the discharge pipe 2.

[0023] The drive unit 4 includes a mounting bracket 41 and a linear drive component 42. The mounting bracket 41 is fixedly mounted on the frame 1, and the linear drive component 42 is fixedly mounted on the mounting bracket 41. The push rod output end of the linear drive component 42 is connected to the clamping block 3, and the linear movement of the push rod directly drives the clamping block 3 to perform clamping or releasing actions.

[0024] During operation, when it is necessary to clamp the discharge pipe 2, the linear drive 42 is activated, the push rod extends outward, and pushes the clamping block 3 to move towards the discharge pipe 2, so that the arc surface 31 on the clamping block 3 fits against the outer wall of the discharge pipe 2. When it is necessary to release the discharge pipe 2, the push rod of the linear drive 42 retracts inward, driving the clamping block 3 away from the discharge pipe 2, thus releasing the clamping state on the discharge pipe 2.

[0025] A push block 421 is fixedly mounted on the end of the push rod of the linear drive component 42. A placement plane 32 is machined on the side of the clamping block 3 near the push block 421, and this placement plane 32 maintains contact with the end plane of the push block 421. The push block 421 transmits the linear thrust of the push rod to the clamping block 3 through this planar contact.

[0026] During operation, when the push rod of the linear drive 42 extends, the push rod drives the push block 421 to move forward. The end plane of the push block 421 keeps in contact with the placement plane 32 on the clamping block 3 and pushes the clamping block 3 to move towards the discharge pipe 2.

[0027] The planar contact design between the push block 421 and the placement plane 32 increases the force-bearing area between the push rod and the clamping block 3, so that the driving force of the push rod can be evenly distributed on the clamping block 3, avoiding local stress concentration that may be caused by point contact.

[0028] Multiple positioning screws 33 are vertically arranged on the placement plane 32 of the clamping block 3. The pushing block 421 is machined with positioning holes corresponding to the number and position of the positioning screws 33, and the diameter of the positioning holes is slightly larger than the outer diameter of the positioning screws 33. The positioning screws 33 pass through the corresponding positioning holes, so that the pushing block 421 and the positioning screws 33 form a sliding fit relationship, and the pushing block 421 can move freely along the axial direction of the positioning screws 33.

[0029] A positioning nut 34 is threaded onto the positioning screw 33. By tightening the positioning nut 34, it is pressed against the surface of the push block 421, thereby connecting the clamping block 3 and the push block 421 to form an integral structure.

[0030] During assembly, the positioning screw 33 is first fixed to the placement plane 32 of the clamping block 3. Then, the positioning hole of the push block 421 is passed through the positioning screw 33, and the positioning nut 34 is screwed into the positioning screw 33 and adjusted to the appropriate position. During operation, when the push rod of the linear drive component 42 pushes the push block 421, since the push block 421 and the clamping block 3 are locked together by the positioning nut 34, the pushing force of the push rod is directly transmitted to the clamping block 3 through the push block 421, causing the clamping block 3 to move smoothly along the axial direction of the positioning screw 33. The positioning nut 34 remains tightened throughout this process, ensuring that there is no relative displacement between the push block 421 and the clamping block 3.

[0031] The mounting frame 41 consists of a connecting plate 411 and a placement plate 412. The connecting plate 411 is horizontally mounted on the frame 1, and the placement plate 412 is vertically mounted on the connecting plate 411, forming a mutually perpendicular connection relationship with the connecting plate 411. The linear drive component 42 is mounted on the connecting plate 411, and its axial direction is parallel to the plane of the placement plate 412.

[0032] During operation, the connecting plate 411 remains stably fixed to the frame 1, providing basic support for the entire drive unit 4. The placement plate 412 is set perpendicular to the connecting plate 411, forming a stable support frame together with the connecting plate 411. The linear drive component 42 is fixed to the connecting plate 411 by bolts or other connection methods. The movement direction of its push rod is constrained by the installation position and always remains parallel to the plane of the placement plate 412, thereby ensuring accurate and reliable transmission of the driving force.

[0033] The linear drive component 42 specifically uses a cylinder as its power source. This cylinder is fixedly mounted on the connecting plate 411 via its cylinder body, and the extension axis of the cylinder piston rod remains parallel to the plane of the placement plate 412. The end of the cylinder piston rod is connected to the push block 421, converting pneumatic energy into mechanical linear motion.

[0034] A slotted groove is formed on the mounting plate 412, the length of which aligns with the extension and retraction direction of the cylinder piston rod. The cylinder body is connected to the mounting plate 412 by bolts, which pass through the slotted groove and the mounting hole of the cylinder. A nut is threaded onto the bolt, and tightening the nut secures the cylinder to the mounting plate 412. The width of the slotted groove is designed to be slightly larger than the diameter of the bolt thread, allowing the bolt to slide and adjust its position along its length within the slot.

[0035] The slotted groove and the bolt together form an adjustable cylinder mounting mechanism. The length of the slotted groove is parallel to the cylinder axis, providing a specific sliding trajectory for the bolt. By loosening the nut, the operator can adjust the cylinder's mounting position along the length of the slotted groove, achieving precise adjustment of the initial position of the clamping mechanism. This design allows the cylinder to be finely adjusted according to actual working conditions, ensuring the alignment accuracy between the push rod and the clamping block 3.

[0036] The implementation principle of the valve-port spiral vacuum scale according to this application embodiment is as follows: When the valve-port spiral vacuum scale needs to clamp the discharge pipe 2, the cylinder is activated, the piston rod extends, and pushes the push block 421 connected to the end of the piston rod; the push block 421 is linked with the clamping block 3 through the positioning screw 33, driving a pair of clamping blocks 3 to move closer to each other, so that the arc surface 31 on the inner side of the clamping block 3 tightly fits the outer wall of the discharge pipe 2, forming a stable clamping; after clamping is completed, the cylinder piston rod retracts, driving the push block 421 and the clamping block 3 away from the discharge pipe 2, releasing the clamping state. The cylinder's position on the placement plate 412 is adjusted through the cooperation of bolts and a groove to meet the centering requirements under different working conditions.

[0037] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A valve-mouth spiral suction scale, characterized in that: Includes a frame, discharge pipe, and clamping block, wherein: The discharge pipe is horizontally mounted on the frame; The clamping blocks are provided in pairs, and the discharge pipe is placed between the pair of clamping blocks; The clamping blocks move closer or further apart from each other via a drive unit.

2. The valve-port spiral suction scale according to claim 1, characterized in that: The clamping block has an arc surface on the side near the discharge pipe that fits against the wall of the discharge pipe.

3. The valve-port spiral suction scale according to claim 1, characterized in that: The drive unit includes a mounting bracket and a linear drive component, wherein: The mounting bracket is installed on the frame; The linear drive is mounted on the mounting bracket, and the push rod of the linear drive is connected to the clamping block.

4. A valve-port spiral suction scale according to claim 3, characterized in that: The push rod end of the linear drive component is provided with a push block; The clamping block has a placement plane on the side near the pushing block.

5. A valve-port spiral suction scale according to claim 4, characterized in that: The placement plane is provided with multiple positioning screws; The push block is provided with a positioning hole for the positioning screw to pass through; The push block slides with the positioning screw through the positioning hole.

6. A valve-port spiral suction scale according to claim 4, characterized in that: The mounting bracket includes a connecting plate and a placement plate, wherein: The connecting plate is horizontally mounted on the frame; The placement plate is disposed on the connecting plate and is perpendicular to the connecting plate; The linear drive component is mounted on the connecting plate.

7. A valve-port spiral suction scale according to claim 6, characterized in that: The linear drive component is a cylinder.

8. A valve-port spiral vacuum scale according to claim 7, characterized in that: The placement plate is provided with an oblong groove, the length of which is consistent with the length direction of the cylinder; A bolt passes through the cylinder and the placement plate, and a nut is threaded onto the bolt. The bolt passes through the waist-shaped groove, and the width of the waist-shaped groove is slightly larger than the diameter of the bolt thread.

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