Liquid fertilizer filling head

Abstract

The utility model relates to a filling equipment technical field especially relates to a liquid fertilizer filling head. Including handle, handle lower extreme is equipped with sleeve, sleeve and handle between be equipped with top spring, sleeve side wall is equipped with feed pipe, sleeve bottom is equipped with extension pipe, handle lower end surface is equipped with injection pipe, and injection pipe inserts from sleeve top wall and extends from extension pipe, and the upper side wall of injection pipe is equipped with the feed inlet cooperation of feed pipe, and the lower side wall of injection pipe is equipped with the discharge port cooperation of extension pipe. After filling, handle first rises, so that the discharge port on injection pipe retracts into extension pipe, feed inlet and feed pipe are dislocated, continue to rise, and handle will take sleeve and rise reset. In this process, feed channel is cut off, especially after the discharge port retracts into extension pipe, the discharge port of filling head is blocked, thereby greatly reducing the probability of dripping, improving environmental cleanliness.

Description

Technical Field

[0001] This utility model relates to the field of filling equipment technology, and in particular to a liquid fertilizer filling head. Background Technology

[0002] Liquid fertilizer is a concentrated fluid fertilizer that uses water as a carrier to contain nutrients such as nitrogen, phosphorus, potassium, and trace elements in ionic or soluble compound form. Compared to traditional solid fertilizers, liquid fertilizers have advantages such as uniform nutrient content, high absorption efficiency, and the ability to be precisely formulated, and are widely used in modern agriculture for drip irrigation, spraying, and bottled retail.

[0003] In the production process of bottled liquid fertilizer, the filling process is an indispensable part, mainly carried out by filling equipment: the filling head descends and extends into the bottle to begin adding liquid fertilizer; the filling head rises and separates from the bottle mouth, the filled bottle is removed, and the next empty bottle is moved to the same position. This process continues, and this is the main flow of the filling process.

[0004] However, after filling is finished, there will always be liquid fertilizer residue in the internal channel of the filling head. Even if the supply pump stops running and the valve is closed, there is still a risk of dripping, which may contaminate the conveyor belt and the bottle, requiring additional cleaning work.

[0005] Therefore, this utility model provides a liquid fertilizer filling head with a split sliding sealing design of the handle and sleeve, and a double-end opening of the channel to cooperate with the opening and closing of the inner cavity of the sleeve. This allows the filling head to close the internal channel when it rises after filling, thereby greatly reducing the probability of dripping from the filling head. Utility Model Content

[0006] The purpose of this utility model is to solve the problems existing in the prior art by proposing a liquid fertilizer filling head.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A liquid fertilizer filling head includes a handle, a sleeve fitted at the lower end of the handle, a top spring between the sleeve and the handle, a feed tube on the side wall of the sleeve, an extension tube at the bottom end of the sleeve, an injection tube on the lower end face of the handle, the injection tube being inserted into the top wall of the sleeve and extending out from the extension tube, the upper side wall of the injection tube having a feed port that mates with the feed tube, and the lower side wall of the injection tube having a discharge port that mates with the extension tube.

[0009] Preferably, the lower end of the injection tube is provided with a cone.

[0010] Preferably, the upper end of the sleeve is provided with a groove, and the bottom end of the handle is inserted into the groove.

[0011] Preferably, the upper end of the sleeve is detachably fitted with a cover, which is composed of two sets of semi-circular flange structures, and a limiting block is provided at the bottom end of the handle.

[0012] Preferably, the upper end of the cover is provided with a hoop, and the top spring is embedded in the hoop.

[0013] Preferably, the sleeve and the handle are axially slidingly fitted.

[0014] Preferably, it also includes a support frame with an inverted telescopic rod on the support frame. The extended end of the telescopic rod is connected to a lifting frame, and the handle is detachably installed on the lifting frame.

[0015] Preferably, the lifting frame is provided with multiple handles at intervals.

[0016] Preferably, the lifting frame is provided with a straight groove, and the upper end of the handle is provided with a stud that passes through the straight groove. A self-locking nut is screwed onto the stud, and the self-locking nut abuts against the upper end surface of the straight groove.

[0017] Compared with the prior art, this utility model provides a liquid fertilizer filling head with the following advantages:

[0018] In this invention, after filling is completed, the handle first rises, causing the outlet on the filling tube to retract back into the extension tube and the inlet to be misaligned with the inlet tube; as it continues to rise, the handle, along with the sleeve, rises and resets. During this process, the feeding channel is cut off, especially after the outlet retracts into the extension tube, the outlet of the filling head is blocked, thereby greatly reducing the probability of dripping and improving environmental cleanliness.

[0019] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0020] Figure 1 This is a three-dimensional assembly diagram of the present invention.

[0021] Figure 2 For the present utility model Figure 1 A frontal view diagram.

[0022] Figure 3 For the present utility model Figure 1 A left-side view diagram.

[0023] Figure 4 This is a cross-sectional schematic diagram of the internal channel of the filling head of this utility model in the closed state.

[0024] Figure 5 This is a cross-sectional schematic diagram of the internal channel of the filling head of this utility model in the open state.

[0025] Figure 6 This is a perspective view of the filling head of this utility model, separated from the handle and sleeve.

[0026] Figure 7 This is a schematic diagram of another leak-proof structure for the lower end extension tube of the sleeve of this utility model.

[0027] In the diagram: 1. Upright frame; 2. Lifting frame; 3. Handle; 4. Sleeve; 5. Top spring; 6. Groove; 7. Cover; 8. Hoop; 9. Injection pipe; 10. Feed inlet; 11. Discharge outlet; 12. Feed pipe; 13. Extension pipe; 14. Telescopic rod. Detailed Implementation

[0028] The following will refer to the appendix in the embodiments of this utility model. Figure 1-7 The technical solutions in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0029] Example 1: To reduce the probability of dripping from the filling head and improve the cleanliness of the filling environment, this example provides a liquid fertilizer filling head, including a drivable lifting handle 3. A sleeve 4 is fitted at the lower end of the handle 3. A top spring 5 is provided between the sleeve 4 and the handle 3. A feed tube 12 is provided on the side wall of the sleeve 4. An extension tube 13 is provided at the bottom end of the sleeve 4. An injection tube 9 is provided on the lower end face of the handle 3. The injection tube 9 is inserted from the top wall of the sleeve 4 and extends out from the extension tube 13. An inlet 10 that cooperates with the feed tube 12 is provided on the upper side wall of the injection tube 9. An outlet 11 that cooperates with the extension tube 13 is provided on the lower side wall of the injection tube 9.

[0030] Principle details of this embodiment:

[0031] A liquid fertilizer filling head includes a handle 3. The filling system itself includes a lifting system for controlling the raising and lowering of the filling head; therefore, the handle 3 is mounted on the lifting system, allowing the handle 3 to be raised and lowered. In a conventional filling head lifting structure, a sleeve 4 is fitted onto the lower end of the handle 3. A top spring 5 is provided between the sleeve 4 and the handle 3, which ensures that the handle 3 and the sleeve 4 always tend to maintain an end-to-end contact position.

[0032] The sleeve 4 has a material cavity with an upper through hole at the top and a lower through hole at the bottom. The diameters of both the upper and lower through holes are smaller than the diameter of the material cavity. A feed pipe 12 is connected to the side wall of the sleeve 4. The feed pipe 12 is connected to a pump via a flexible hose. The pump is connected to a storage tank, forming a feeding system (not shown in the attached diagram). The feed pipe 12 corresponds to and communicates with the material cavity. An extension pipe 13 is provided at the lower end of the sleeve 4. The extension pipe 13 communicates with the lower through hole, and its inner diameter matches that of the lower through hole.

[0033] The lower end of the handle 3 is provided with a material injection tube 9. The material injection tube 9 enters the sleeve 4 through the upper through hole, and then passes through the material cavity and the lower through hole in sequence, and finally extends into the extension tube 13. The upper side wall of the material injection tube 9 is provided with a material inlet 10 and the lower side wall is provided with a material outlet 11.

[0034] Based on the above technical solution:

[0035] After the filling bottle is moved to the filling position below the filling head, the lifting mechanism is activated, causing the filling head to descend. As the filling head descends, the extension tube 13 descends synchronously, initially touching the bottle opening. As the filling head continues to descend until it stops, during this process, because the extension tube 13 is touching the bottle opening, the sleeve 4 stops descending, while the handle 3 descends relative to the sleeve 4, compressing the top spring 5. The injection tube 9 descends synchronously with the handle 3, causing the inlet 10 on the handle 3 to enter the material chamber and correspond to the inlet tube 12. The outlet 11 on the handle 3 extends from the extension tube 13 and enters the filling bottle. At this time, the inlet tube 12, inlet 10, injection tube 9, and outlet 11 form a through-feeding channel, through which the liquid fertilizer can be injected into the bottle.

[0036] After filling is completed, the filling head rises, with the handle 3 rising first, followed by the injection tube 9. This causes the outlet 11 on the injection tube 9 to retract back into the extension tube 13, and the inlet 10 to be misaligned with the inlet tube 12. As it continues to rise, the handle 3, along with the sleeve 4, rises and resets. During this process, the feeding channel is cut off, especially after the outlet 11 retracts into the extension tube 13, which blocks the outlet 11 of the filling head, thus greatly reducing the probability of dripping and improving environmental cleanliness.

[0037] In this embodiment, sealing rings are provided at the joints between the material cavity and the upper and lower perforations, which are fastened to the injection pipe 9, thereby preventing liquid fertilizer from overflowing from the gap between the inner cavity of the sleeve 4 and the injection pipe 9.

[0038] In a further embodiment of this solution, as described in Example 2, the lower end of the injection tube 9 is provided with an inverted cone. In a static state, the outlet 11 on the injection tube 9 retracts into the extension tube 13. At this time, the upper surface of the cone abuts against the lower port of the extension tube 13, sealing the port of the extension tube 13 and providing further sealing.

[0039] In this embodiment, the cone head can be installed at the lower end of the injection tube 9 by screwing it in. Specifically, the upper surface of the cone head has a threaded hole, and the lower side wall of the injection tube 9 has a matching external thread, thus achieving a threaded fit. Furthermore, the threaded fit between the cone head and the injection tube 9 is self-locking, preventing easy slippage. The cone head is detachable and can be installed, which also meets the installation requirements of the injection tube 9.

[0040] In this embodiment, to accommodate the cone head, another extension tube 13 structure can also be provided: see attached figure. Figure 7As shown, a stepped groove is provided at the lower end of the extension tube 13, with a small-diameter opening at the upper part of the stepped groove. Thus, when the outlet 11 retracts into the extension tube 13, the upper horizontal surface of the cone head rests against the upper step of the small-diameter opening of the stepped groove, making the cone head concealed within the stepped groove. During injection, only a slight downward movement of the injection tube 9 is needed to allow the outlet 11 to penetrate into the small-diameter opening of the stepped groove, thus achieving unobstructed feeding. The lower end of the injection tube 9 does not need to extend excessively into the filling bottle, thereby reducing the amount of liquid fertilizer droplets adhering to the outer wall of the injection tube 9 and further reducing the probability of dripping after the filling head rises.

[0041] In a further embodiment of this solution, as described in Example 3, the upper end of the sleeve 4 is provided with a groove 6, and the bottom end of the handle 3 is inserted into the groove 6. This allows the sleeve 4 to be fitted onto the lower end of the handle 3.

[0042] In this embodiment, a cap 7 is detachably installed on the upper end of the sleeve 4. The cap 7 is composed of two semi-annular flange structures joined together, and a limiting block is provided at the bottom end of the handle 3. After the lower end of the handle 3 is embedded in the groove 6, in order to maintain a stable connection between the sleeve 4 and the handle 3, the two semi-annular flange structures are then spliced ​​onto the handle 3, and then fastened to the upper end of the sleeve 4 with bolts. The inner ring of the cap 7, where the two semi-annular flanges are spliced ​​together, can abut against the limiting block, thereby preventing the sleeve 4 from detaching from the handle 3. The bolt threads have self-locking properties.

[0043] In this embodiment, the upper end of the cover 7 is provided with a hoop 8, and the lower end of the top spring 5 is embedded in the hoop 8. Preferably, the handle 3 is also provided with a hoop 8, so that the upper end of the top spring 5 is embedded in the hoop 8 on the handle 3. This restricts the position of the top spring 5 to prevent it from shifting after being stretched or contracted by force.

[0044] In this embodiment, the sleeve 4 and the handle 3 are axially slidingly engaged. This vertical sliding engagement can be achieved by using a splined limiting block and a splined groove 6, or by using a rectangular shaft and a rectangular hole 6. This prevents the sleeve 4 from misaligning due to the elastic drive of the top spring 5, ensuring that the feed inlet 10 always corresponds to the feed pipe 12, guaranteeing smooth feeding. In this case, a material cavity is not required.

[0045] Example 4, a further embodiment of this solution, provides a lifting device for raising and lowering the filling head to make the solution clearer: It includes a frame 1, the bottom of which is bolted to the mounting frame of the conveyor belt, and the frame 1 stands on the side of the conveyor belt. A telescopic rod 14 is bolted to the upper end of the frame 1; the telescopic rod 14 can be any one of an electric rod, hydraulic rod, or pneumatic rod. The telescopic rod 14 is inverted, with its extended end moving downwards. The extended end of the telescopic rod 14 is connected to a lifting frame 2, and a handle 3 is detachably mounted on the lifting frame 2, thereby realizing the raising and lowering installation of the filling head.

[0046] In this embodiment, multiple guide sleeves are vertically spaced on the lifting frame 2. The guide sleeves are installed on the upright frame 1 and are used to guide the vertical movement of the lifting frame 2, so that the lifting of the filling head is more stable.

[0047] In this embodiment, the lifting frame 2 is provided with a straight groove, and the upper end of the handle 3 is provided with a stud that passes through the straight groove. A self-locking nut is screwed onto the stud, and the self-locking nut abuts against the upper end face of the straight groove. This allows for the detachable installation of the handle 3 on the lifting frame 2. Through the compression and locking of the self-locking nut, the handle 3 is firmly secured to the lifting frame 2.

[0048] Preferably, the straight groove on the lifting frame 2 can be spaced out with multiple handles 3, allowing for multi-bottle filling operations in one go and improving filling efficiency. Furthermore, the lifting frame 2 can be provided with multiple insertion holes to replace the straight groove, with studs installed from the insertion holes. The insertion holes restrict the position of the studs, thereby preventing the handles 3 from shifting along the straight groove.

[0049] To improve the stability of the installation connection, all threaded connections in this solution are self-locking.

[0050] In this solution, a support can also be provided. The support is located at the lower end of the sleeve 4 when the lower end of the extension tube 13 touches the bottle mouth during filling. The support helps to lift the sleeve 4 so as to prevent the downward pressure of the sleeve 4 from being concentrated on the bottle mouth, which would make the filling bottle unstable.

[0051] In this design, the lower end face of the extension tube 13 is a serrated surface, meaning that several small grooves are provided radially to act as vents for air inside the bottle. Similarly, the bottom end of the groove 6 is also provided with a vent hole that penetrates the sleeve 4.

[0052] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A liquid fertilizer filling head, characterized in that, Includes a handle (3), a sleeve (4) is fitted at the lower end of the handle (3), a top spring (5) is provided between the sleeve (4) and the handle (3), a feed pipe (12) is provided on the side wall of the sleeve (4), an extension pipe (13) is provided at the bottom end of the sleeve (4), an injection pipe (9) is provided on the lower end face of the handle (3), the injection pipe (9) is inserted from the top wall of the sleeve (4) and extends out from the extension pipe (13), the upper side wall of the injection pipe (9) is provided with an inlet (10) that cooperates with the feed pipe (12), and the lower side wall of the injection pipe (9) is provided with an outlet (11) that cooperates with the extension pipe (13).

2. The liquid fertilizer filling head according to claim 1, characterized in that, The lower end of the injection tube (9) is provided with a cone.

3. The liquid fertilizer filling head according to claim 1, characterized in that, The upper end of the sleeve (4) is provided with a groove (6), and the bottom end of the handle (3) is inserted into the groove (6).

4. The liquid fertilizer filling head according to claim 3, characterized in that, The upper end of the sleeve (4) is detachably fitted with a cover (7), which is composed of two sets of semi-circular flange structures. The bottom end of the handle (3) is provided with a limiting block.

5. The liquid fertilizer filling head according to claim 4, characterized in that, The cap (7) has a hoop (8) at the upper end, and the top spring (5) is embedded in the hoop (8).

6. The liquid fertilizer filling head according to claim 3, characterized in that, The sleeve (4) and the handle (3) are axially slidingly engaged.

7. The liquid fertilizer filling head according to claim 1, characterized in that, It also includes a support frame (1), on which is provided an inverted telescopic rod (14), the extended end of which is connected to a lifting frame (2), and the handle (3) is detachably installed on the lifting frame (2).

8. The liquid fertilizer filling head according to claim 7, characterized in that, The lifting frame (2) is provided with multiple handles (3) spaced apart.

9. The liquid fertilizer filling head according to claim 8, characterized in that, The lifting frame (2) is provided with a straight groove, and the upper end of the handle (3) is provided with a stud that passes through the straight groove. A self-locking nut is screwed onto the stud, and the self-locking nut abuts against the upper end surface of the straight groove.

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