A negative pressure conveying device for PVC plastic particle production

Abstract

The utility model discloses a PVC plastic particle production is with negative pressure conveying device, including material cylinder, the one side of material cylinder is connected with fixed sleeve through, the inside slide coupling of fixed sleeve has telescopic subassembly, the top of material cylinder is sleeved and has the limit ring, the surface of limit ring is connected with left clamping ring, one end of left clamping ring is rotatably connected with right clamping ring, and one end of left clamping ring and right clamping ring is fixedly connected with the locating block, the inside slide coupling of locating block has limit component, telescopic subassembly includes two groups of sliding blocks of slide coupling in fixed sleeve interior, one side fixed connection of sliding block has sliding sleeve, and the surface of sliding sleeve is sleeved with support spring, limit component includes the clamping post of slide coupling in locating block interior. The utility model discloses the setting of telescopic subassembly, avoids the rupture of suction hose and material cylinder interface place to cause hard pull, and the reliability of continuous operation and the durability of equipment are promoted.

Description

Technical Field

[0001] This utility model relates to the field of plastic granule production technology, specifically a negative pressure conveying device for PVC plastic granule production. Background Technology

[0002] Negative pressure conveying devices for PVC granule production are mainly used to transport PVC granules from storage tanks or silos to other processing equipment or storage areas through a pipeline system. Negative pressure conveying is a process of drawing in and transporting materials by creating a negative pressure below atmospheric pressure in the conveying pipeline. This type of device is widely used in the plastics and chemical industries, enabling efficient, dust-free, and continuous material transport.

[0003] Patent document CN222022086U discloses a negative pressure conveying device for PVC plastic granule production, including a storage bin. An installation plate is located inside the top opening of the storage bin. A connecting block is fixedly connected to the middle left side of the installation plate. The left side of the connecting block is fixedly connected to the left side of the inner wall of the storage bin. An installation seat is fixedly connected to the top side of the installation plate. A first threaded rod is provided through the top left side of the installation seat for top-down material conveying. This method does not occupy the internal capacity of the storage bin, avoiding excessive space occupation due to structural issues. It allows for comprehensive suction and conveying based on the depth of the granular material inside the storage bin, greatly expanding its applicability. It eliminates the need to constantly hold the conveying pipe, allowing for free and flexible adjustment of the suction end's position and depth, significantly reducing workload. Furthermore, it eliminates the need for specialized anti-clogging structures, preventing excessive material particles from clogging the suction hopper.

[0004] However, when using this device, the force of pulling the suction hose can cause it to break at the interface between the suction hose and the material cylinder, affecting the continuous operation of the equipment and reducing its durability. Utility Model Content

[0005] The main purpose of this utility model is to provide a negative pressure conveying device for PVC plastic granule production, which can effectively solve the problem in the background technology that when personnel pull the suction hose, it is easy to cause hard pulling, resulting in the breakage of the suction hose and the material cylinder interface, which affects the continuous operation of the equipment and reduces the durability of the equipment.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A negative pressure conveying device for PVC plastic granule production includes a material cylinder, a fixed sleeve connected through one side of the material cylinder, a telescopic assembly slidably connected inside the fixed sleeve, a positioning ring sleeved on the top of the material cylinder, a left clamping ring engaged on the surface of the positioning ring, a right clamping ring rotatably connected to one end of the left clamping ring, a positioning block fixedly connected to one end of each of the left and right clamping rings, a limit assembly slidably connected inside the positioning block, the telescopic assembly including two sets of sliders slidably connected inside the fixed sleeve, a sliding sleeve fixedly connected to one side of each slider, a support spring sleeved on the surface of the sliding sleeve; the limit assembly including a locking pin slidably connected inside the positioning block, a limit ring sleeved on the surface of the locking pin, a telescopic spring fixedly connected to one side of the limit ring.

[0008] Preferably, the fixed sleeve has a groove inside that matches the slider, and the sliding sleeve has a connecting sleeve inside. The sliding sleeve is connected to the connecting sleeve through the thread, so as to achieve adjustable axial positioning and facilitate disassembly during maintenance.

[0009] Preferably, a suction hose is fitted to one end of the connecting sleeve, a rotating disk is fitted to the surface of the connecting sleeve, and an absorption connector is connected to one end of the suction hose. The absorption connector, with its through-hole design, can be adapted to pipes of different diameters.

[0010] Preferably, a filter is snapped onto the top of the material cylinder, and a top cover is provided on the top of the filter. The top cover is snapped into the inside of the left clamping ring, and the top cover is quickly snapped and fixed by the left clamping ring, which is convenient for disassembly and assembly.

[0011] Preferably, one set of the positioning blocks is internally rotatably connected to a rotating rod, one end of the rotating rod is sleeved with a limit rod, and one end of the locking post is provided with a locking groove adapted to the limit rod. The rotating rod and the limit rod cooperate with the locking groove of the locking post to form a mechanical interlock to prevent accidental loosening during equipment operation.

[0012] Preferably, a vacuum generator is provided on the top of the top cover, and an exhaust pipe is connected through the top of the top cover. The vacuum generator generates negative pressure through the exhaust pipe to assist the suction hose in efficient delivery.

[0013] Preferably, a sealing ring is fitted onto one end of the sliding sleeve, the sealing ring being made of rubber, and a control box is provided on the surface of the cylinder, the control box integrating electrical components to realize automated operation and adjustment;

[0014] Preferably, the surface of the material cylinder is fixedly connected with several sets of fixed feet, and the surface of the fixed feet is provided with lifting holes. The design of the lifting holes of the fixed feet facilitates the hoisting and transportation of the equipment and enhances the flexibility of on-site deployment.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This utility model, through the setting of the telescopic component, allows the user to pull the suction hose during use, thereby pulling the connecting sleeve. Since the connecting sleeve is threaded inside the sliding sleeve, it causes the sliding sleeve to slide inside the fixed sleeve. At the same time, the slider slides in the groove inside the fixed sleeve to maintain stability. The slider then compresses the support spring, causing the support spring to deform under force and generate elastic force, which in turn pushes the sliding sleeve in the opposite direction. This avoids the breakage at the interface between the suction hose and the material cylinder caused by hard pulling, thus improving the reliability of continuous operation and the durability of the equipment.

[0017] 2. This utility model, through the setting of left clamping ring, right clamping ring and limiting component, allows for easy removal of the filter for maintenance when the filter needs to be removed. Pressing the two sets of locking pins causes the locking pins to drive the limiting ring inside the positioning block to squeeze the telescopic spring. The telescopic spring contracts under force, causing the locking pin to disengage from the surface of the limiting rod. This pulls the rotating rod to disengage from the groove of the positioning block, thereby pulling and opening the left and right clamping rings. This achieves the effect of convenient removal and installation of the top cover, realizing tool-free removal and installation of the filter, greatly shortening maintenance time and reducing operation and maintenance costs. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the telescopic component structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the limiting component structure of this utility model.

[0022] In the diagram: 1. Material cylinder; 2. Fixed sleeve; 3. Telescopic assembly; 301. Slider; 302. Sliding sleeve; 303. Support spring; 4. Positioning ring; 5. Left clamping ring; 6. Right clamping ring; 7. Positioning block; 8. Limiting assembly; 801. Locking post; 802. Limiting ring; 803. Telescopic spring; 9. Connecting sleeve; 10. Suction hose; 11. Rotating disc; 12. Absorption connector; 13. Filter; 14. Top cover; 15. Rotating rod; 16. Limiting rod; 17. Vacuum generator; 18. Exhaust pipe; 19. Sealing ring; 20. Control box; 21. Fixed foot. Detailed Implementation

[0023] 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.

[0024] Please see Figures 1-4 This utility model provides a technical solution: a negative pressure conveying device for PVC plastic granule production, including a material cylinder 1, a fixed sleeve 2 connected through one side of the material cylinder 1, and a telescopic component 3 slidably connected inside the fixed sleeve 2. The telescopic component 3 prevents the suction hose 10 from breaking at the interface with the material cylinder 1 due to rigid pulling, thus improving the reliability of continuous operation and the durability of the equipment. A positioning ring 4 is sleeved on the top of the material cylinder 1, and a left clamping ring 5 is snapped onto the surface of the positioning ring 4. A right clamping ring 6 is rotatably connected to one end of the left clamping ring 5. Positioning blocks 7 are fixedly connected to one end of both the left clamping ring 5 and the right clamping ring 6. The positioning blocks 7 are slidably connected inside. The limiting component 8, through the setting of the left clamping ring 5, the right clamping ring 6 and the limiting component 8, achieves the effect of convenient disassembly and assembly of the top cover 14, realizes tool-less disassembly and assembly of the filter 13, greatly shortens maintenance time and reduces operation and maintenance costs. The telescopic component 3 includes two sets of sliders 301 slidably connected inside the fixed sleeve 2. A sliding sleeve 302 is fixedly connected to one side of the slider 301, and a support spring 303 is sleeved on the surface of the sliding sleeve 302. The limiting component 8 includes a locking post 801 slidably connected inside the positioning block 7. A limiting ring 802 is sleeved on the surface of the locking post 801, and a telescopic spring 803 is fixedly connected to one side of the limiting ring 802.

[0025] Please see Figure 2 and Figure 3 The fixed sleeve 2 has a groove inside that matches the slider 301. The sliding sleeve 302 has a connecting sleeve 9 connected to it by a thread. One end of the connecting sleeve 9 is fitted with a suction hose 10. A rotating disk 11 is fitted on the surface of the connecting sleeve 9. One end of the suction hose 10 is connected to an absorption connector 12.

[0026] The sliding groove restricts the movement trajectory of the slider 301, ensuring that the sliding sleeve 302 maintains linear motion stability during the extension and retraction process, preventing skewness or jamming, and increasing the reliability of the equipment. The sliding sleeve 302 is connected to the sleeve 9 by a threaded connection to achieve adjustable axial positioning, which is convenient for disassembly during maintenance. The suction hose 10 connected to one end of the connecting sleeve 9 is responsible for material conveying. Its through-designed absorption connector 12 can be adapted to different pipe diameters. The rotating disk 11 is sleeved on the surface of the connecting sleeve 9, and the connecting sleeve 9 can be easily disassembled and assembled by rotation, realizing tool-free disassembly and assembly.

[0027] Please see Figure 2 and Figure 4 The top of the material cylinder 1 is fitted with a filter 13, and the top of the filter 13 is fitted with a top cover 14, which is fitted into the inside of the left clamping ring 5; a set of positioning blocks 7 is rotatably connected to a rotating rod 15, one end of the rotating rod 15 is fitted with a limit rod 16, and one end of the locking post 801 is provided with a locking groove that matches the limit rod 16.

[0028] The filter 13 at the top of the material cylinder 1 intercepts impurities, preventing dust and other impurities from being discharged, causing air pollution or affecting the health of workers. At the same time, the top cover 14 is quickly snapped and fixed by the left clamping ring 5, which is convenient for disassembly and assembly. The rotating rod 15 and the limiting rod 16 cooperate with the slot of the locking post 801 to form a mechanical interlock, preventing accidental loosening during equipment operation. This enables tool-free disassembly and assembly of the filter 13, greatly shortening maintenance time and reducing operation and maintenance costs.

[0029] Please see Figure 2 and Figure 3 A vacuum generator 17 is provided on the top of the top cover 14. An exhaust pipe 18 is connected through the top of the top cover 14. A sealing ring 19 is fitted onto one end of the sliding sleeve 302. The sealing ring 19 is made of rubber. A control box 20 is provided on the surface of the material cylinder 1. Several sets of fixing feet 21 are fixedly connected to the surface of the material cylinder 1. The surface of the fixing feet 21 is provided with lifting holes.

[0030] The vacuum generator 17 generates negative pressure through the exhaust pipe 18 to assist the suction hose 10 in efficient conveying. The sealing ring 19 is made of rubber to enhance the airtightness of the end of the sliding sleeve 302 and prevent material leakage. The control box 20 integrates electrical components to realize automated operation and adjustment. The lifting hole design of the fixed foot 21 facilitates the hoisting and transportation of the equipment and enhances the flexibility of on-site deployment.

[0031] Working principle: During use, the operator pulls the suction hose 10, which in turn pulls the connecting sleeve 9. Since the connecting sleeve 9 is threaded inside the sliding sleeve 302, it causes the sliding sleeve 302 to slide inside the fixed sleeve 2. At the same time, the slider 301 slides in the groove inside the fixed sleeve 2 to maintain stability. The slider 301 then compresses the support spring 303, causing the support spring 303 to deform under force and generate elastic force, which in turn pushes the sliding sleeve 302 in the opposite direction. When the filter 13 needs to be removed for maintenance, the two sets of locking pins 801 are pressed, causing the locking pins 801 to drive the limiting ring 802 inside the positioning block 7 to compress the telescopic spring 803. The telescopic spring 803 is compressed under force, and the locking pins 801 disengage from the surface of the limiting rod 16. The rotating rod 15 is pulled to disengage from the groove of the positioning block 7, which in turn pulls and opens the left clamping ring 5 and the right clamping ring 6. The above is the working process of the entire device. All contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0032] 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 can 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 negative pressure conveying device for PVC plastic granule production, comprising a material cylinder (1), characterized in that: A fixed sleeve (2) is connected through one side of the material cylinder (1). A telescopic component (3) is slidably connected inside the fixed sleeve (2). A positioning ring (4) is sleeved on the top of the material cylinder (1). A left clamping ring (5) is snapped onto the surface of the positioning ring (4). A right clamping ring (6) is rotatably connected to one end of the left clamping ring (5). A positioning block (7) is fixedly connected to one end of both the left clamping ring (5) and the right clamping ring (6). A limit component (8) is slidably connected inside the positioning block (7). The telescopic component (3) includes two sets of sliders (301) slidably connected inside the fixed sleeve (2). A sliding sleeve (302) is fixedly connected to one side of the slider (301), and a support spring (303) is sleeved on the surface of the sliding sleeve (302). The limiting component (8) includes a locking post (801) slidably connected inside the positioning block (7), a limiting ring (802) is sleeved on the surface of the locking post (801), and a telescopic spring (803) is fixedly connected to one side of the limiting ring (802).

2. The negative pressure conveying device for PVC plastic granule production according to claim 1, characterized in that: The fixed sleeve (2) has a groove inside that matches the slider (301), and the sliding sleeve (302) has a connecting sleeve (9) threaded inside.

3. The negative pressure conveying device for PVC plastic granule production according to claim 2, characterized in that: One end of the connecting sleeve (9) is fitted with a suction hose (10), a rotating disk (11) is fitted onto the surface of the connecting sleeve (9), and an absorption connector (12) is connected through one end of the suction hose (10).

4. The negative pressure conveying device for PVC plastic granule production according to claim 1, characterized in that: A filter (13) is snapped onto the top of the material cylinder (1), and a top cover (14) is provided on the top of the filter (13). The top cover (14) is snapped into the inside of the left clamping ring (5).

5. The negative pressure conveying device for PVC plastic granule production according to claim 1, characterized in that: One of the positioning blocks (7) is internally rotatably connected to a rotating rod (15), one end of which is sleeved with a limiting rod (16), and one end of the locking post (801) is provided with a locking groove that matches the limiting rod (16).

6. The negative pressure conveying device for PVC plastic granule production according to claim 4, characterized in that: A vacuum generator (17) is provided on the top of the top cover (14), and an exhaust pipe (18) is connected through the top of the top cover (14).

7. The negative pressure conveying device for PVC plastic granule production according to claim 1, characterized in that: A sealing ring (19) is fitted onto one end of the sliding sleeve (302). The sealing ring (19) is made of rubber. A control box (20) is provided on the surface of the material cylinder (1).

8. The negative pressure conveying device for PVC plastic granule production according to claim 1, characterized in that: The surface of the material cylinder (1) is fixedly connected with several sets of fixed feet (21), and the surface of the fixed feet (21) is provided with lifting holes.

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