Leakage-proof valve

Abstract

The utility model discloses a material leakage prevention valve which comprises a valve body, a sealing ring, a cone valve and a driving mechanism, and the valve body is provided with a channel extending in the vertical direction; the sealing ring is arranged at the lower end of the channel; the upper end of the cone valve is conical, and the cone valve is movably installed at the lower end of the valve body in the vertical direction so as to have a closed state that the cone valve moves upwards till the side wall of the cone valve abuts against the sealing ring and an open state that the cone valve moves downwards till the cone valve is disengaged from the sealing ring. And the driving mechanism is arranged on the valve body, and the driving mechanism is connected with the cone valve so as to drive the cone valve to be switched between the closed state and the open state. The sealing device is good in sealing performance, and the situation of material leakage is avoided.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a leak-proof valve. Background Technology

[0002] A discharge valve is a device mainly used for bottom discharge, feeding, and sampling operations in packaging machines, storage tanks, and other containers. It is generally connected to the bottom of a reaction vessel or other container through a flange at the bottom of its valve body, thereby achieving the purpose of releasing all the materials inside the packaging machine.

[0003] Patent CN203395226U discloses a discharge pipe valve device. The upper end of the discharge pipe is set at the bottom of the raw material tank. A connecting sleeve is connected to the lower end of the discharge pipe. A bushing is provided on one side of the connecting sleeve. The middle part of the shaft is set in the shaft hole of the bushing. A handle is provided at the upper end of the shaft. The upper and lower ends of the spring on the upper part of the shaft respectively press against the opposite surfaces of the handle and the bushing. A plate is connected to the lower end of the shaft. The plate is provided with a discharge hole corresponding to the inverted conical tube discharge hole.

[0004] The valves in the aforementioned prior art have poor sealing performance, and leakage still occurs even after the valve is closed. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a leak-proof valve to solve the technical problem that the valve has poor sealing performance and leaks even after the valve is closed.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a leak-proof valve for installation at the discharge port of a packaging machine, comprising:

[0008] The valve body has a channel extending in a vertical direction;

[0009] A sealing ring is located at the lower end of the channel;

[0010] A cone valve, the upper end of which is conical, is vertically mounted on the lower end of the valve body, and has a closed state where it moves upward to abut against the sealing ring, and an open state where it moves downward to disengage from the sealing ring; and

[0011] A drive mechanism is provided on the valve body and is connected to the cone valve to drive the cone valve to switch between the closed state and the open state.

[0012] In some embodiments, the drive mechanism includes a mounting ring, a plurality of first pull rods, and a drive assembly. The mounting ring is slidably mounted on the periphery of the valve body in a vertical direction. The plurality of first pull rods are spaced apart circumferentially along the mounting ring. The upper end of the first pull rod is connected to the mounting ring, and the lower end of the first pull rod is connected to the cone valve. The drive assembly is connected to the mounting ring to drive the mounting ring to move.

[0013] In some embodiments, the first pull rod and the cone valve are detachably connected.

[0014] In some embodiments, the lower end of the first pull rod is bent toward the central region of the channel to form a bend, and the cone valve is placed in a plurality of the bends.

[0015] In some embodiments, the drive assembly includes a connecting rod, a second pull rod, and a drive cylinder. The middle portion of the connecting rod is rotatably mounted on the valve body along a horizontal axis and located above the mounting ring. One end of the second pull rod is rotatably connected to one end of the connecting rod, and the other end of the second pull rod is connected to the mounting ring. The upper end of the drive cylinder is rotatably mounted on the valve body, and the push rod of the drive cylinder is positioned downwards and rotatably connected to the other end of the connecting rod.

[0016] In some embodiments, the lower outer periphery of the valve body is provided with a plurality of guide holes, and the plurality of guide holes correspond one-to-one with a plurality of first pull rods, with the first pull rods passing through the guide holes.

[0017] In some embodiments, a nylon ring is provided on the inner side of the mounting ring and the inner side of the guide hole.

[0018] In some embodiments, a filter screen is also provided at the lower end of the channel.

[0019] In some embodiments, the lower end of the cone valve is cone-shaped.

[0020] In some embodiments, the diameter of the channel is smaller than the maximum diameter of the cone valve and larger than the minimum diameter of the cone valve.

[0021] Compared with the prior art, the leak-proof valve provided by this utility model has a channel for material to pass through. The sealing ring is adapted to the channel and is located at the lower end of the channel. When the cone valve moves upward, the conical sidewall of the cone valve can abut against the sealing ring, thereby sealing the channel and preventing material leakage. When the cone valve moves downward away from the sealing ring, the material can continue to fall after landing on the cone valve due to its conical shape, thus completing the feeding process. This avoids the cone valve interfering with the feeding process. This application has better sealing performance and avoids material leakage.

[0022] The above description is merely an overview of the technical solution of this utility model. To better understand the technical means of this utility model and to enable its implementation according to the description, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of an embodiment of the leak-proof valve provided by this utility model;

[0024] Figure 2 yes Figure 1 A partial schematic diagram of the anti-leakage valve;

[0025] Figure 3 yes Figure 1 A 3D schematic diagram of the anti-leakage valve;

[0026] Figure 4 yes Figure 3 A partial schematic diagram of the anti-leakage valve;

[0027] Figure 5 yes Figure 1 Front view of the anti-leakage valve;

[0028] Figure 6 yes Figure 5 A magnified view of part A in the diagram.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1-Valve body, 11-Cup, 12-Mounting cylinder, 121-Guide hole, 13-Channel, 2-Sealing ring, 3-Cone valve, 4-Drive mechanism, 41-Mounting ring, 42-First pull rod, 421-Bending part, 43-Connecting rod, 44-Second pull rod, 45-Drive cylinder, 5-Filter screen, 6-Mounting bracket. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model 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 of the present utility model and are not intended to limit the present utility model.

[0032] To address the technical problem of poor valve sealing in existing technologies, which results in material leakage even after the valve is closed, this invention provides a leak-proof valve with good sealing performance, thus preventing material leakage.

[0033] Please see Figure 1 , Figure 1 This is a schematic diagram of the anti-leakage valve in one embodiment of the present invention.

[0034] This utility model provides a leak-proof valve for installation at the discharge port of a packaging machine. It includes a valve body 1, a sealing ring 2, a cone valve 3, and a drive mechanism 4. The valve body 1 has a vertically extending channel 13; the sealing ring 2 is located at the lower end of the channel 13; the upper end of the cone valve 3 is conical, and the cone valve 3 is vertically mounted on the lower end of the valve body 1, allowing it to move upwards to a closed state where its sidewall abuts against the sealing ring 2, and downwards to an open state where it disengages from the sealing ring 2; and the drive mechanism 4 is located on the valve body 1 and connected to the cone valve 3 to drive the cone valve 3 to switch between the closed and open states.

[0035] In this embodiment, please refer to Figure 1 , Figure 2 and Figure 6 The channel 13 is used for material passage. The sealing ring 2 is adapted to the channel 13 and is located at the lower end of the channel 13. When the cone valve 3 moves upward, the conical sidewall of the cone valve 3 can abut against the sealing ring 2, thereby sealing the channel 13 and preventing material leakage. When the cone valve 3 moves downward away from the sealing ring 2, the material can continue to fall after landing on the cone valve 3, thus completing the feeding process. This avoids the cone valve 3 interfering with the feeding process. This application has good sealing performance and avoids material leakage.

[0036] In one embodiment, please refer to Figures 2 to 4 The drive mechanism 4 includes a mounting ring 41, a plurality of first pull rods 42, and a drive assembly. The mounting ring 41 is slidably mounted on the outer periphery of the valve body 1 in a vertical direction. The plurality of first pull rods 42 are arranged at intervals around the mounting ring 41. The upper end of the first pull rod 42 is connected to the mounting ring 41, and the lower end of the first pull rod 42 is connected to the cone valve 3. The drive assembly is connected to the mounting ring 41 to drive the mounting ring 41 to move.

[0037] In this embodiment, since the cone valve 3 is located directly below the channel 13, and the channel 13 is used for material passage, in order to avoid the drive mechanism 4 interfering with the material feeding, the mounting ring 41 is also slidably installed on the outer periphery of the valve body 1. The mounting ring 41 can be moved in the vertical direction. A plurality of first pull rods 42 are evenly distributed along the circumference of the valve body 1. The two ends of the first pull rods 42 are respectively connected to the mounting ring 41 and the cone valve 3, thereby driving the mounting ring 41 and the first pull rods 42 to drive the cone valve 3 to move in the vertical direction. This arrangement can avoid interference with the material feeding.

[0038] In this embodiment, the first pull rod 42 is provided in three parts.

[0039] In this embodiment, the first pull rod 42 and the cone valve 3 are detachably connected for ease of installation and subsequent maintenance.

[0040] In one embodiment, please refer to Figure 2 and Figure 6 The lower end of the first pull rod 42 is bent toward the middle region of the channel 13 to form a bend, and the cone valve 3 is placed in a plurality of the bends.

[0041] In this embodiment, all the bending portions are bent inwards, allowing the cone valve 3 to be placed on multiple bending portions. This vertically limits the cone valve 3, preventing it from detaching downwards from the first pull rod 42. The multiple pull rods are spaced apart circumferentially along the valve body 1, thus circumferentially limiting the cone valve 3 and preventing it from moving horizontally. When the first pull rod 42 moves upwards, it drives the cone valve 3 upwards. When the first pull rod 42 moves downwards, the cone valve 3 moves downwards under its own weight and the weight of the material, thereby opening the channel 13 for material feeding.

[0042] In one embodiment, please refer to Figures 3 to 5 The drive assembly includes a connecting rod 43, a second pull rod 44, and a drive cylinder 45. The middle part of the connecting rod 43 is rotatably mounted on the valve body 1 along a horizontal axis and is located above the mounting ring 41. One end of the second pull rod 44 is rotatably connected to one end of the connecting rod 43, and the other end of the second pull rod 44 is connected to the mounting ring 41. The upper end of the drive cylinder 45 is rotatably mounted on the valve body 1, and the push rod of the drive cylinder 45 is set downwards. The push rod is rotatably connected to the other end of the connecting rod 43.

[0043] In this embodiment, the anti-leakage valve further includes a mounting bracket 6 and a rotating shaft. The mounting bracket 6 is installed on the upper end of the valve body 1 by a clamp. The rotating shaft extends horizontally, and one end of the rotating shaft is rotatably installed on the mounting bracket 6 via a bearing. The middle part of the connecting rod 43 is provided with a rotating shaft hole, which is adapted to the rotating shaft. The connecting rod 43 is fixedly installed on one end of the rotating shaft through the rotating shaft hole, so that the connecting rod 43 can rotate relative to the valve body 1. The upper end of the driving cylinder 45 is rotatably installed on the mounting bracket 6 along the horizontal axis, and its push rod extends downward, so that the push rod can move vertically. The two ends of the connecting rod 43 are rotatably connected to the second pull rod 44 and the push rod, respectively. The second pull rod 44 is connected to the mounting ring 41, thereby driving the mounting ring 41 to move vertically via the driving cylinder 45.

[0044] In this embodiment, one end of the connecting rod 43 has two spaced connecting portions, which are located on opposite sides of the valve body 1. There are two second pull rods 44, which are located on opposite sides of the valve body 1. The two second pull rods 44 correspond one-to-one with the two connecting portions, and the upper end of each second pull rod 44 is rotatably connected to the connecting portion.

[0045] In one embodiment, please refer to Figure 2 and Figure 6 The lower outer periphery of the valve body 1 is also provided with a plurality of guide holes 121, and the plurality of guide holes 121 correspond one-to-one with the plurality of first pull rods 42, and the first pull rods 42 pass through the guide holes 121.

[0046] In this embodiment, since the first pull rod 42 and the cone valve 3 are detachably connected, the first pull rod 42 may wobble. Therefore, the lower outer periphery of the valve body 1 is provided with a plurality of guide holes 121. The guide holes 121 are adapted to the first pull rod 42, and the first pull rod 42 passes through the guide holes 121, thereby limiting the first pull rod 42 through the guide holes 121 to prevent it from wobble.

[0047] In this embodiment, the valve body 1 includes a material cup 11 and a mounting cylinder 12. The upper end of the material cup 11 is used to connect to the discharge port of the packaging machine. The mounting cylinder 12 is detachably installed at the lower end of the material cup 11. The mounting cylinder 12 is adapted to the material cup 11. The hollow areas of the mounting cylinder 12 and the material cup 11 together form the channel 13. The mounting bracket 6 and the mounting ring 41 are both installed on the material cup 11. The outer periphery of the mounting cylinder 12 is provided with an annular mounting protrusion. The guide hole 121 is provided on the mounting protrusion. The sealing ring 2 is installed at the lower end of the mounting cylinder 12. The cone valve 3 is located at the lower end of the mounting cylinder 12.

[0048] In one embodiment, a nylon ring is provided on the inner side of the mounting ring 41 and the inner side of the guide hole 121.

[0049] In this embodiment, the mounting ring 41, the first pull rod 42, and the valve body 1 are all made of metal. To avoid wear on these components, nylon rings are provided in both the mounting ring 41 and the guide hole 121. By providing the nylon rings, friction between the metal components can be avoided, wear can be reduced, and the service life of the device can be extended.

[0050] In one embodiment, please refer to Figure 6 The lower end of the channel 13 is also provided with a filter screen 5.

[0051] In this embodiment, the filter screen 5 is installed at the connection between the mounting cylinder 12 and the material cup 11. By setting the filter screen 5, impurities in the material can be filtered.

[0052] In one embodiment, please refer to Figure 6 The lower end of the cone valve 3 is cone-shaped.

[0053] In this embodiment, in order to facilitate the positioning of the bending part 421 and the cone valve 3, the lower end of the cone valve 3 is also cone-shaped, and the bending angle of the bending part 421 is adapted to the cone valve 3.

[0054] In this embodiment, the diameter of the channel 13 is smaller than the maximum diameter of the cone valve 3 but larger than the minimum diameter of the cone valve 3. This arrangement achieves a better sealing effect.

[0055] To better understand this utility model, the following is combined with... Figures 1 to 6 The technical solution of this utility model is described in detail below:

[0056] When material needs to be unloaded, the drive cylinder 45 drives one end of the connecting rod 43 to move upward, thereby driving the second pull rod 44 and the mounting ring 41 to move downward through the connecting rod 43, which in turn drives the first pull rod 42 and the cone valve 3 to move downward. At this time, the cone valve 3 disengages from the sealing ring 2, thereby opening the channel 13, and material can be unloaded.

[0057] When it is necessary to close, the drive cylinder 45 drives one end of the connecting rod 43 to move downward, which in turn drives the second pull rod 44, the mounting ring 41, the first pull rod 42 and the cone valve 3 to move upward, so that the circumferential surface of the cone valve 3 abuts against the sealing ring 2, thereby closing the channel 13.

[0058] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A leak-proof valve for installation at the discharge port of a packaging machine, characterized in that, It includes: The valve body has a channel extending in a vertical direction; A sealing ring is located at the lower end of the channel; A cone valve, the upper end of which is cone-shaped, is vertically mounted on the lower end of the valve body, so that it can move upward to a closed state where its side wall abuts against the sealing ring and move downward to an open state where it is no longer in contact with the sealing ring. as well as A drive mechanism is provided on the valve body and is connected to the cone valve to drive the cone valve to switch between the closed state and the open state.

2. The leak-proof valve according to claim 1, characterized in that, The drive mechanism includes a mounting ring, a plurality of first pull rods, and a drive assembly. The mounting ring is slidably mounted on the outer periphery of the valve body in a vertical direction. The plurality of first pull rods are spaced apart circumferentially along the mounting ring. The upper end of the first pull rod is connected to the mounting ring, and the lower end of the first pull rod is connected to the cone valve. The drive assembly is connected to the mounting ring to drive the mounting ring to move.

3. The leak-proof valve according to claim 2, characterized in that, The first pull rod and the cone valve are detachably connected.

4. The leak-proof valve according to claim 3, characterized in that, The lower end of the first pull rod is bent toward the middle region of the channel to form a bend, and the cone valve is placed in a plurality of the bends.

5. The leak-proof valve according to claim 2, characterized in that, The drive assembly includes a connecting rod, a second pull rod, and a drive cylinder. The middle part of the connecting rod is rotatably mounted on the valve body along a horizontal axis and is located above the mounting ring. One end of the second pull rod is rotatably connected to one end of the connecting rod, and the other end of the second pull rod is connected to the mounting ring. The upper end of the drive cylinder is rotatably mounted on the valve body, and the push rod of the drive cylinder is set downwards. The push rod is rotatably connected to the other end of the connecting rod.

6. The leak-proof valve according to claim 2, characterized in that, The lower outer periphery of the valve body is also provided with a plurality of guide holes, and the plurality of guide holes correspond one-to-one with a plurality of first pull rods, with the first pull rods passing through the guide holes.

7. The leak-proof valve according to claim 6, characterized in that, A nylon ring is provided on the inner side of the mounting ring and the inner side of the guide hole.

8. The anti-leakage valve according to claim 1, characterized in that, A filter screen is also provided at the lower end of the channel.

9. The leak-proof valve according to claim 1, characterized in that, The lower end of the cone valve is cone-shaped.

10. The leak-proof valve according to claim 9, characterized in that, The diameter of the channel is smaller than the maximum diameter of the cone valve but larger than the minimum diameter of the cone valve.

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