Vacuum hopper with non-return function
By designing a vacuum hopper with a check valve function, automated material conveying was achieved, solving the problems of hopper inner wall damage and low material adjustment efficiency, thus improving factory efficiency and reducing costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHANGJIAGANG JIN MASCH CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-07
AI Technical Summary
When conveying materials under negative pressure, existing vacuum hoppers can cause damage to the inner wall of the hopper if the material speed is too high, or result in low efficiency if the speed is too low. They are also difficult to adapt to the efficient adjustment of different material shapes, which increases the burden on the factory, especially small and medium-sized factories where the efficiency is low.
A vacuum hopper with a check function was designed. The check component automatically opens when the material is sucked in under negative pressure and automatically closes after the material is sucked in, thus preventing the material from damaging the inner wall. The check component can also guide the conveying of different materials without the need for precise adjustment of the negative pressure.
It improves the efficiency of hopper use, reduces operating costs, adapts to the conveying needs of different material shapes, avoids hopper damage, and improves the efficiency of factory use.
Smart Images
Figure CN224467039U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material conveying equipment in factories, and in particular to a vacuum hopper with a backflow prevention function. Background Technology
[0002] In centralized material supply projects, multiple hoppers are needed to transport materials, depending on the specific circumstances. For example, materials are fed in batches, one batch is fed, another is released, and then the next batch is fed, and so on in a continuous cycle.
[0003] During the material suction process, negative pressure is required to achieve material suction. During operation, material is sequentially fed to each hopper in a cyclical manner. The check valves of other vacuum hoppers awaiting feeding are closed, with only the hopper being fed open. This ensures a complete pipeline seal and guarantees sufficient pressure. However, when the material enters the hopper through the negative pressure pipeline, excessive material velocity can impact the inner wall of the hopper, causing damage over prolonged use. Conversely, reducing the negative pressure lowers the material velocity, resulting in slow suction and wasted time. For long-term factory use, this reduces operational efficiency.
[0004] In summary, many current hoppers suffer from excessive or insufficient negative pressure and sequential feeding issues. Furthermore, the negative pressure needs to be adjusted according to the shape of the material, such as powder or granules, in order to achieve efficient operation of the hopper.
[0005] However, for factory processing, adjusting the negative pressure according to different materials will increase the burden on the factory, especially when small and medium-sized factories cannot achieve such efficient adjustment, which will reduce the efficiency of hopper use. Utility Model Content
[0006] To solve the above-mentioned technical problems, this utility model provides a vacuum hopper with a check valve function.
[0007] The technical solution of this utility model is: a vacuum hopper with a check valve function, comprising:
[0008] The hopper body has a hollow middle section for storing materials, and the lower end of the hopper body is the discharge port.
[0009] A feeding channel is located on the outside of the hopper body and is connected to the hopper body;
[0010] A check valve assembly, wherein the check valve assembly is disposed inside the hopper body and cooperates with the feed channel, and can block or open the feed channel, the check valve assembly comprising:
[0011] The fixing frame is disposed inside the hopper body;
[0012] A check plate is rotatably mounted on a fixed frame. Under the action of gravity, the check plate covers the feed channel. When the hopper body performs negative pressure suction, the negative pressure will rotate the check plate to open the feed channel.
[0013] Furthermore, the fixing bracket is provided with a waist-shaped hole, which is arranged horizontally. This waist-shaped hole facilitates the opening of the check plate. Rotation is achieved by passing a rotating shaft through it.
[0014] Furthermore, a limiting plate is provided on the fixing frame. After the check plate is rotated open around the rotating hole, the limiting plate contacts the check plate, and the check plate is inclined. This ensures that the check plate is inclined, facilitating the smooth entry of materials into the hopper body.
[0015] Furthermore, the limiting plate is provided with an inclined surface, which is configured to cooperate with the check plate in the open state. The contact between the two limits the opening angle of the check plate.
[0016] Furthermore, it also includes a counterweight plate, which is positioned outside the check plate. This ensures that the feed channel can be smoothly blocked under the action of gravity.
[0017] Furthermore, a negative pressure channel is connected to the hopper body, which is connected to a negative pressure device. This negative pressure channel ensures the smooth operation of the vacuum hopper.
[0018] Furthermore, a cover plate is provided on the top of the hopper body, and a negative pressure channel is provided on the cover plate. The cover plate ensures that the negative pressure channel is located at the top, which facilitates subsequent feeding.
[0019] Furthermore, a filter screen is installed in the portion of the negative pressure channel near the hopper body. The filter screen ensures that the material enters the hopper body smoothly and prevents it from entering the negative pressure channel.
[0020] Furthermore, the feed channel extends inward and protrudes into the hopper body. This partial inward extension facilitates the installation of the check valve assembly, allowing for better coordination between the two.
[0021] Furthermore, the hopper body includes a straight barrel section and a conical section, the lower end of which is the discharge port; and
[0022] The straight barrel section is equipped with a feeding channel, which is located on the upper side of the straight barrel section and away from the discharge port. This distance ensures smooth feeding.
[0023] The beneficial technical effects of this utility model are as follows: By setting a check valve component, the feeding channel is automatically closed. When the vacuum pump is sucking material, the negative pressure causes the check valve component to open, allowing material to be conveyed. When suction ends, the negative pressure disappears, and the check valve component automatically closes under gravity. After conveying is completed, it automatically reopens, blocking the feeding channel, and this process repeats. Simultaneously, the check valve component allows material to enter the interior without damaging the inner wall. Furthermore, for materials in different states, the check valve component can guide them without requiring precise adjustments, greatly reducing operating costs and improving efficiency. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of a vacuum hopper with a check valve function.
[0025] Figure 2 This is a schematic diagram of the interior of a vacuum hopper.
[0026] Figure 3 This is a cross-sectional view of a vacuum hopper.
[0027] Figure 4 This is a schematic diagram of the check valve assembly.
[0028] Figure 5 This is a schematic diagram of the operation of the check valve component.
[0029] in:
[0030] 1. Hopper body; 11. Straight barrel section; 12. Conical section;
[0031] 2. Discharge port,
[0032] 3. Feeding channel,
[0033] 4. Check valve assembly; 41. Fixing bracket; 42. Check valve plate; 43. Counterweight plate; 44. Waist-shaped hole; 45. Limiting plate.
[0034] 5. Negative pressure channel; 6. Cover plate. Detailed Implementation
[0035] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0036] See appendix Figure 1-5 The vacuum hopper with check valve function shown includes:
[0037] The hopper body 1 has a hollow middle section for storing materials, and the lower end of the hopper body 1 is the discharge port 2.
[0038] Feeding channel 3 is located on the outside of hopper body 1 and is connected to hopper body 1;
[0039] A check valve assembly 4 is disposed inside the hopper body 1 and cooperates with the feed channel 3, capable of blocking or opening the feed channel 3. The check valve assembly 4 includes:
[0040] Fixing frame 41 is installed inside the hopper body 1;
[0041] Check plate 42 is rotatably mounted on fixed frame 41. Under the action of gravity, check plate 42 covers feed channel 3. When hopper body 1 performs negative pressure suction, the negative pressure will rotate check plate 42 to open feed channel 3.
[0042] The automatic closure of the feed channel 3 is achieved by setting a check valve component 4. During vacuum suction, the negative pressure causes the check valve component 4 to open, facilitating material transport. When suction ends and the negative pressure disappears, the check valve component 4 automatically closes under gravity. After transport is complete, it automatically reopens, blocking the feed channel 3, and this process repeats. Simultaneously, the check valve component 4 prevents material from entering the interior and damaging the inner wall. Furthermore, it can guide materials in different states without requiring precise adjustments, significantly reducing operating costs and improving efficiency.
[0043] Furthermore, the mounting bracket 41 is provided with a waist-shaped hole 44, which is positioned horizontally. This waist-shaped hole 44 facilitates the opening of the check plate 42. Rotation is achieved by passing a pivot shaft through the hole.
[0044] Furthermore, a limiting plate 45 is provided on the fixed frame 41. After the check plate 42 is rotated open around the rotating hole, the limiting plate 45 contacts the check plate 42, and the check plate 42 is inclined. This ensures that the check plate 42 is inclined, which facilitates the smooth entry of materials into the hopper body 1.
[0045] Furthermore, the limiting plate 45 is provided with an inclined surface, which is configured to cooperate with the check plate 42 in the open state. The contact between the two limits the opening angle of the check plate 42.
[0046] Furthermore, it also includes a counterweight plate 43, which is located outside the check plate 42. This ensures that the feed channel 3 can be smoothly blocked under the action of gravity.
[0047] Furthermore, a negative pressure channel 5 is connected to the hopper body 1, and this negative pressure channel 5 is connected to a negative pressure device. The setting of this negative pressure channel 5 ensures the smooth operation of the vacuum hopper.
[0048] Furthermore, a cover plate 6 is provided on the top of the hopper body 1, and a negative pressure channel 5 is provided on the cover plate 6. The cover plate 6 ensures that the negative pressure channel 5 is located at the top, which facilitates subsequent feeding.
[0049] Furthermore, a filter screen is installed in the portion of the negative pressure channel 5 near the hopper body 1. The filter screen ensures that the material can smoothly enter the hopper body 1 and prevents it from entering the negative pressure channel 5.
[0050] Furthermore, the feed channel 3 extends inward and protrudes into the hopper body 1. This partial inward extension facilitates the installation of the check valve assembly 4, allowing for better coordination between the two.
[0051] Furthermore, the hopper body 1 includes a straight barrel section 11 and a conical section 12, the lower end of which is the discharge port 2; and
[0052] The straight barrel section 11 is provided with a feeding channel 3, which is located on the upper side of the straight barrel section 11 and away from the discharge port 2. This distance ensures smooth feeding.
[0053] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A vacuum hopper with a check valve function, characterized in that, include: The hopper body (1) has a hollow middle section for storing materials, and the lower end of the hopper body (1) is a discharge port (2). Feeding channel (3), the feeding channel (3) is located on the outside of the hopper body (1), and the feeding channel (3) is connected to the hopper body (1); A check valve assembly (4) is disposed inside the hopper body (1) and cooperates with the feed channel (3), and can block or open the feed channel (3). The check valve assembly (4) includes: A fixing frame (41) is disposed inside the hopper body (1); Check plate (42) is rotatably mounted on fixed frame (41), and under the action of gravity, check plate (42) covers the feed channel (3). When the hopper body (1) performs negative pressure suction, the negative pressure will rotate check plate (42) to open feed channel (3).
2. The vacuum hopper with check valve function according to claim 1, characterized in that: The fixing frame (41) is provided with a waist-shaped hole (44), which is arranged in the horizontal direction.
3. The vacuum hopper with check valve function according to claim 1, characterized in that: A limiting plate (45) is provided on the fixing frame (41). After the check plate (42) is rotated open around the rotating hole, the limiting plate (45) contacts the check plate (42), and the check plate (42) is inclined.
4. The vacuum hopper with check valve function according to claim 3, characterized in that: An inclined surface is provided on the limiting plate (45), and the inclined surface is configured to cooperate with the check plate (42) in the open state.
5. The vacuum hopper with check valve function according to claim 1, characterized in that: It also includes a counterweight plate (43), which is disposed outside the check plate (42).
6. The vacuum hopper with check valve function according to claim 1, characterized in that: The hopper body (1) is connected to a negative pressure channel (5), which is connected to a negative pressure device.
7. The vacuum hopper with check valve function according to claim 1, characterized in that: A cover plate (6) is provided above the hopper body (1), and a negative pressure channel (5) is provided on the cover plate (6).
8. The vacuum hopper with check valve function according to claim 6 or 7, characterized in that: A filter screen is installed in the part of the negative pressure channel (5) near the hopper body (1).
9. The vacuum hopper with check valve function according to claim 1, characterized in that: The feeding channel (3) extends inward and protrudes into the hopper body (1).
10. The vacuum hopper with check valve function according to claim 1, characterized in that: The hopper body (1) includes a straight barrel section (11) and a conical section (12), the lower end of which is a discharge port (2); and The straight barrel section (11) is provided with a feeding channel (3), and the feeding channel (3) is located on the upper side of the straight barrel section (11) and away from the discharge port (2).