Pneumatic telescopic hopper structure

Abstract

The utility model provides a kind of pneumatic telescopic feeding hopper structure, to the top of traditional Chinese medicine extraction tank feeding, including fixed cylinder section, matching sliding sleeve is set in the movable cylinder section outside fixed cylinder section and the telescopic drive part of driving movable cylinder section relative to fixed cylinder section telescopic action;It further includes feeding manhole, its at the free end side of movable cylinder section, fixedly connected with positioning pipe between feeding manhole and fixed cylinder section, the outer wall of movable cylinder section is provided with at least one sleeve, sleeve coaxial sleeve is set on positioning pipe;The utility model improves the telescopic action connection structure and sealing structure between fixed cylinder section and movable cylinder section, realize that pneumatic telescopic feeding hopper is more stable when running telescopic action, stability and anti-oscillation effect is good, and sealing dustproof effect is good, anti-run material effect is good, solve the existing technical problems in prior art, such as the adverse phenomena, such as run material, etc.

Description

Technical Field

[0001] This utility model relates to the field of pharmaceutical, food and chemical equipment technology, and in particular to a pneumatic telescopic feeding hopper structure. Background Technology

[0002] Extraction tanks are widely used in the pharmaceutical and food industries to extract active ingredients from traditional Chinese medicine. For the extraction of solid herbal raw materials, it is usually necessary to transfer the prepared raw materials from the storage area to the extraction tank. This can be achieved by installing a feeding hopper above the inlet of the extraction tank for long-distance feeding, thus shortening the raw material transportation process and reducing the risk of contamination during transport. Current feeding hopper solutions mainly include manual feeding hoppers and pneumatic telescopic feeding hoppers. Chinese patent CN201520739174.X discloses a pneumatic telescopic feeding cylinder connected to the inlet of the extraction tank. The pneumatic telescopic feeding cylinder includes a telescopic cylinder body and a drive device for controlling the extension and retraction of the telescopic cylinder body. The telescopic cylinder body is composed of at least two mutually cooperating cylinder bodies with different inner diameters, fitted together. A ball bearing limiting device is provided between adjacent cylinder bodies. This utility model has a reasonable design, simple structure, and effectively avoids the need for operators to move the medicine to be added to the extraction tank to the same position as the feeding cylinder, reducing the labor intensity of operators and making operation convenient. However, the manual feeding hopper in the existing technical solution has been almost eliminated due to its low efficiency, while the pneumatic telescopic feeding hopper is prone to swaying and material leakage during operation due to its structure, and also has problems such as inconvenient installation. Utility Model Content

[0003] The purpose of this utility model is to address the shortcomings of existing technologies by providing a pneumatic telescopic feeding hopper structure for top feeding of materials from extraction tanks for traditional Chinese medicine, etc. By improving the telescopic connection structure and sealing structure between the fixed and movable cylindrical sections, the telescopic feeding hopper achieves smoother telescopic movement, better stability and anti-swaying effect, as well as excellent sealing and dustproofing effect and material leakage prevention effect. This solves the technical problems of existing pneumatic telescopic feeding hoppers, such as swaying and material leakage during operation due to structural reasons.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] A pneumatic telescopic feeding hopper structure includes a fixed cylindrical section, a movable cylindrical section that is matched and slidably sleeved outside the fixed cylindrical section, and a telescopic drive unit for driving the movable cylindrical section to telescopically extend relative to the fixed cylindrical section; it also includes a feeding manhole located on the free end side of the movable cylindrical section, a positioning tube fixedly connected between the feeding manhole and the fixed cylindrical section, and at least one sleeve provided on the outer wall of the movable cylindrical section, the sleeve being coaxially sleeved on the positioning tube.

[0006] Preferably, the movable cylinder section is coaxially sleeved with the fixed cylinder section, and the movable cylinder section slides and extends along its axial direction. The axial direction of the positioning tube is consistent with the sliding and extending direction of the movable cylinder section.

[0007] Preferably, the sleeve is provided in two sets at both ends along the axial direction of the movable cylinder.

[0008] Preferably, one axial end of the positioning tube is welded to the outer wall of the fixed cylinder section, and the other axial end is welded to the flange of the feeding manhole.

[0009] Preferably, a sealing gasket is provided at the shaft end where the movable cylinder section and the fixed cylinder section are fitted together. The inner diameter of the sealing gasket is smaller than the outer diameter of the fixed cylinder section, and the inner edge of the sealing gasket is flexibly bent to seal tightly against the outer wall of the fixed cylinder section. Preferably, a lower flange is fixedly installed at the shaft end where the movable cylinder section and the fixed cylinder section are fitted together, and an upper flange is also included. The sealing gasket is clamped and installed between the upper flange and the lower flange.

[0010] Preferably, the upper flange is configured as a split annular shape composed of at least two arc segments joined together.

[0011] Preferably, adjacent arc segments are joined by a tenon and mortise structure.

[0012] Preferably, the lower flange is configured as an integrally formed annular shape; the upper flange and the lower flange are connected by fasteners.

[0013] Preferably, the telescopic drive unit is configured as a telescopic cylinder, with its fixed end connected to the outer wall of the fixed cylinder section and its telescopic end connected to the outer wall of the movable cylinder section.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) This utility model improves the telescopic connection structure between the fixed cylinder section and the movable cylinder section, and sets a positioning device on the movable cylinder section to linearly guide and limit its sliding action, so that the telescopic action of the pneumatic telescopic feeding hopper is more stable and has good stability and anti-sway effect.

[0016] (2) This utility model improves the sealing structure between the fixed cylinder section and the movable cylinder section, and improves the sealing structure between the movable cylinder section and the fixed cylinder section, so as to achieve a good sealing and dust prevention effect and a good material leakage prevention effect for the pneumatic telescopic feeding hopper.

[0017] (3) In this utility model, a sealing structure is provided at the upper end of the movable cylinder section to slide and seal with the fixed cylinder section. The inner diameter of the circular sealing gasket is designed to be slightly smaller than that of the fixed cylinder section, so that the sealing gasket is always in close contact with the outer wall of the fixed cylinder section when the pneumatic telescopic feeding hopper performs telescopic movements, thereby fully ensuring the sealing effect.

[0018] (4) This utility model uses a non-standard flange in conjunction with a circular sealing gasket for sealing, which ensures sealing performance while making installation simpler and more efficient. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the pneumatic telescopic feeding hopper of this utility model in an idle state.

[0020] Figure 2 This is a schematic diagram of the overall structure of the pneumatic telescopic feeding hopper of this utility model in working condition. Figure 3 This is a diagram showing the component relationships of the sealing structure in this utility model;

[0021] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 5 for Figure 2 Enlarged view of section B in the middle. 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] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0026] Example 1

[0027] like Figure 1-2 As shown, a pneumatic telescopic feeding hopper structure includes a fixed cylindrical section 1, a movable cylindrical section 2 that is matched and slidably sleeved outside the fixed cylindrical section 1, and a telescopic drive unit 3 that drives the movable cylindrical section 2 to telescopically extend relative to the fixed cylindrical section 1; it also includes a feeding manhole 4, which is located on the free end side of the movable cylindrical section 2, and a positioning tube 51 is fixedly connected between the feeding manhole 4 and the fixed cylindrical section 1. At least one sleeve 52 is provided on the outer wall of the movable cylindrical section 2, and the sleeve 52 is coaxially sleeved on the positioning tube 51.

[0028] In this embodiment, by setting a telescopic positioning structure consisting of a positioning tube 5 and at least one sleeve 52, the telescopic sliding process of the movable cylinder 2 is guided and limited, so that it always maintains axial linear movement and the telescopic action is more stable, effectively preventing adverse phenomena such as swaying during the telescopic process.

[0029] Preferably, the movable cylindrical section 2 is coaxially sleeved with the fixed cylindrical section 1, and the movable cylindrical section 2 slides and extends along its axial direction. The axial direction of the positioning tube 51 is consistent with the sliding and extending direction of the movable cylindrical section 2.

[0030] Preferably, the sleeve 52 is provided in two sets at both ends along the axial direction of the movable cylinder 2.

[0031] Preferably, one axial end of the positioning tube 51 is welded to the outer wall of the fixed cylinder section 1, and the other axial end is welded to the flange 41 of the feeding manhole 4.

[0032] In this embodiment, a sleeve 52 is installed at the upper and lower ends of the movable cylindrical section 2. During installation, the sleeve 52 is inserted into the positioning tube 5 welded to the manhole flange 41 of the extraction tank and the upper end of the fixed cylindrical section 1 to complete the positioning.

[0033] Preferably, the telescopic drive unit 3 is configured as a telescopic cylinder, with its fixed end connected to the outer wall of the fixed cylinder section 1 and its telescopic end connected to the outer wall of the movable cylinder section 2.

[0034] Example 2

[0035] The components in this embodiment that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals as those in the above embodiments. For the sake of simplicity, only the differences between this embodiment and the above embodiments are described below. The difference between this embodiment and the above embodiments is that:

[0036] like Figure 1-5 As shown, preferably, a sealing washer 61 is provided at the shaft end where the movable cylinder 2 is sleeved with the fixed cylinder 1. The inner diameter of the sealing washer 61 is smaller than the outer diameter of the fixed cylinder 1, and the inner edge of the sealing washer 61 is flexibly bent to seal tightly against the outer wall of the fixed cylinder 1.

[0037] In this embodiment, the inner diameter of the circular sealing gasket 61 is designed to be slightly smaller than the outer diameter of the fixed cylinder section 1, thus, as Figure 1 and Figure 4 As shown, during the process of the movable cylinder 2 rising to fully overlap with the fixed cylinder 1 and when it rises to its idle state, the inner edge of the sealing gasket 61 is flexibly bent downwards to ensure a tight seal with the outer wall of the fixed cylinder 1 at all times. Figure 2 and Figure 5 As shown, during the process of the movable cylinder 2 moving down to fully extend relative to the fixed cylinder 1 and during the working state of moving down to match and engage with the feeding manhole 4, the inner edge of the sealing gasket 61 is flexibly bent upwards to always fully seal and tightly adhere to the outer wall of the fixed cylinder 1. This ensures that the sealing gasket 61 remains tightly attached to the fixed cylinder 1 at all times during the extension and retraction of the movable cylinder 2. Compared with traditional feeding hoppers, this embodiment greatly optimizes and improves sealing performance, meets dustproof requirements, and also provides good material leakage prevention. As a supplementary explanation, such as... Figure 3 As shown, the outer diameter of the sealing gasket 61 is the same as that of the upper flange 63 and the lower flange 62.

[0038] Preferably, the shaft end of the movable cylindrical section 2 that is sleeved with the fixed cylindrical section 1 is fixedly installed with a lower flange 62, and also includes an upper flange 63, with the sealing gasket 61 clamped between the upper flange 63 and the lower flange 62.

[0039] Preferably, the upper flange 63 and the lower flange 62 are connected by fasteners.

[0040] Example 3

[0041] The components in this embodiment that are the same as or corresponding to those in the above embodiments are referred to by the same reference numerals as those in the above embodiments. For the sake of simplicity, only the differences between this embodiment and the above embodiments are described below. The difference between this embodiment and the above embodiments is that:

[0042] like Figure 3 As shown, preferably, the upper flange 63 is configured as a split annular shape composed of at least two arc segments 631 spliced ​​together.

[0043] Preferably, adjacent arc segments 631 are connected by a tenon and mortise structure.

[0044] In this embodiment, the upper flange 63 is configured as a multi-segment split structure, preferably composed of two semi-circular arc segments 631 formed by cutting the complete flange plate in half. The cut surfaces of the two arc segments 631 are specially designed tenon and mortise structures, which makes the flange connection more accurate and thus achieves the purpose of convenient installation.

[0045] Preferably, the lower flange 62 is configured as an integrally formed annular shape.

[0046] In this embodiment, the sealing structure adopts two flanges, upper and lower. The lower flange 62 is a single piece and welded to the movable cylinder section 2, while the upper flange 63 is a separate piece. The sealing structure formed by using non-standard flanges and circular sealing gaskets effectively seals the sliding connection between the fixed cylinder section 1 and the movable cylinder section 2, while also facilitating installation and replacement.

[0047] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pneumatic telescopic feeding hopper structure, comprising a fixed cylindrical section (1), a movable cylindrical section (2) that is matched and slidably sleeved outside the fixed cylindrical section (1), and a telescopic drive unit (3) for driving the movable cylindrical section (2) to telescopically extend relative to the fixed cylindrical section (1); characterized in that It also includes a feeding manhole (4), which is located on the free end side of the movable cylinder (2). A positioning tube (51) is fixedly connected between the feeding manhole (4) and the fixed cylinder (1). At least one sleeve (52) is provided on the outer wall of the movable cylinder (2). The sleeve (52) is coaxially sleeved on the positioning tube (51).

2. A pneumatic retractable hopper structure according to claim 1, wherein The movable cylinder (2) is coaxially sleeved with the fixed cylinder (1), and the movable cylinder (2) slides and extends along its axial direction. The axial direction of the positioning tube (51) is consistent with the sliding and extending direction of the movable cylinder (2).

3. The pneumatic retractable hopper structure according to claim 1, wherein, The sleeve (52) is provided in two sets at both ends along the axial direction of the movable cylinder (2).

4. The pneumatic retractable hopper structure according to claim 1, wherein, One axial end of the positioning tube (51) is welded to the outer wall of the fixed cylinder section (1), and the other axial end is welded to the flange (41) of the feeding manhole (4).

5. The pneumatic retractable hopper structure according to claim 1, wherein, A sealing washer (61) is provided at the shaft end where the movable cylinder section (2) is sleeved with the fixed cylinder section (1). The inner diameter of the sealing washer (61) is smaller than the outer diameter of the fixed cylinder section (1). The inner edge of the sealing washer (61) is flexibly bent to seal tightly against the outer wall of the fixed cylinder section (1).

6. A pneumatic retractable hopper structure according to claim 5, wherein The movable cylindrical section (2) is fitted with a lower flange (62) at the shaft end that is connected to the fixed cylindrical section (1), and also includes an upper flange (63). The sealing gasket (61) is clamped between the upper flange (63) and the lower flange (62).

7. A pneumatic retractable hopper structure according to claim 6, wherein The upper flange (63) is configured as a split annular shape composed of at least two arc segments (631) spliced ​​together.

8. A pneumatic retractable hopper structure according to claim 7, wherein The adjacent arc segments (631) are connected by a tenon and mortise structure.

9. The pneumatic retractable hopper structure according to claim 6, wherein, The lower flange (62) is configured as an integrally formed ring; the upper flange (63) and the lower flange (62) are connected by fasteners.

10. The pneumatic retractable hopper structure according to claim 1, wherein, The telescopic drive unit (3) is configured as follows: The telescopic cylinder has its fixed end connected to the outer wall of the fixed cylinder section (1) and its telescopic end connected to the outer wall of the movable cylinder section (2).

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