Anti-drip-irrigation filling head for polyhydric alcohol filling

Abstract

The utility model relates to the technical field of filling heads, in particular to an anti-drip-irrigation filling head for polyhydric alcohol filling, which comprises a conveying pipe mounted on a polyhydric alcohol filling machine, the bottom end of the conveying pipe is fixedly connected with a filling head body through a flange, and a plurality of liquid outlet holes are formed in the outer wall, close to the bottom end, of the filling head body. According to the filling head, the filling head body, the adjusting pipe, the sliding groove, the boss, the round hole, the notch and the plugging module are arranged in a matched mode, so that the plugging sleeve can automatically open or plug the round hole according to the fact that the filling head body stretches into or out of a container barrel, and residual polyhydric alcohol in the filling head body is prevented from leaking; and the cleanliness of the production environment and the safety of the production process are ensured. According to the filling head, the filling head body, the liquid outlet holes with different hole diameters, the adjusting pipe, the adjusting ring and the round hole are arranged in a matched mode, so that the filling head can meet the filling requirements of polyhydric alcohols with different viscosities and different densities, the universality and flexibility of equipment are improved, and the filling efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of filling heads, in particular to an anti-drip filling head for polyol filling. Background Art

[0002] Polyols, as an important class of organic compounds, contain two or more hydroxyl groups (-OH) in their molecular structure. These hydroxyl groups give polyols unique chemical and physical properties, making them play a vital role in various industrial fields. In the chemical, food, pharmaceutical and other industries, polyols are an important raw material and intermediate.

[0003] When the polyol filling machine is filling, the container barrels are generally on the assembly line. When the filling head finishes filling the previous barrel, it needs to be pulled out and wait for the arrival of the next barrel. However, a small amount of polyol still remains on the inner wall of the filling head pipe, causing it to drip onto the conveying equipment under the filling head body, and then adhere to the outer wall of the container barrel of the next batch of filling, increasing the subsequent cleaning work and thus affecting production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a drip-proof filling head for polyol filling, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A drip-proof filling head for polyol filling includes a feed pipe installed on a polyol filling machine, the bottom end of the feed pipe is fixedly connected to a filling head body via a flange, a plurality of liquid outlet holes are provided on the outer wall of the filling head body near the bottom end, an anti-drip unit is rotatably sleeved on the outer wall of the filling head body, the anti-drip unit includes an adjusting tube, the inner wall of the adjusting tube is rotatably sleeved on the outer wall of the filling head body, and a blocking module is provided on the outer wall of the anti-drip unit.

[0007] Preferably, the material of the filling head body includes but is not limited to stainless steel or special alloy materials.

[0008] Furthermore, the outer wall of the adjusting tube is symmetrically provided with two sliding grooves, the outer wall of the adjusting tube near the bottom end is provided with a boss, the surface of the boss is provided with a circular hole, and the top surface of the boss is provided with a notch.

[0009] Furthermore, the blocking module includes a fixed ring, the inner wall of the fixed ring and the outer wall of the adjusting tube are sleeved and fixed, the bottom surface of the fixed ring is fixedly connected with several reset springs at equal angles, the other ends of the several reset springs are fixedly connected with a movable ring, the bottom surface of the movable ring is fixedly connected with a blocking sleeve, the inner walls of the movable ring and the blocking sleeve are slidably sleeved with the outer wall of the adjusting tube, and two sliders are symmetrically fixed to the inner wall of the movable ring, and the two sliders are slidably connected with two sliding grooves respectively.

[0010] Furthermore, a buffer ring is sleeved on the outer wall of the blocking sleeve, and the top surface of the buffer ring is fixedly connected to the bottom surface of the movable ring.

[0011] Furthermore, the inner wall of the sealing sleeve is provided with a docking groove matching the boss, the inner wall of the docking groove is fixedly connected with a rubber plug, the inner wall of the docking groove is located above the rubber plug and fixedly connected with a blocking block, and the blocking block fits with the notch.

[0012] Preferably, the sizes of the plurality of liquid outlet holes decrease in sequence clockwise, and an adjusting ring is sleeved and fixed on the outer wall of the adjusting tube near the top.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. Through the coordinated arrangement of the filling head body, adjusting tube, chute, boss, round hole, notch, fixed ring, reset spring, movable ring, slider, buffer ring, sealing sleeve, docking groove, rubber plug and blocking block, when the filling head body extends into the container barrel, the sealing sleeve can automatically move upward due to the extrusion force, so that the round hole is not blocked, thereby allowing filling. When the filling head body is moved upward after filling is completed, the sealing sleeve, which has lost the extrusion force, will move downward due to the rebound force of the reset spring, automatically blocking the round hole, thereby preventing the polyol remaining in the filling head body from dripping, thereby ensuring the cleanliness of the production environment and the safety of the production process.

[0015] 2. Through the coordination among the filling head body, several liquid outlet holes with different apertures, the adjusting tube, the adjusting ring and the circular hole, the size of the liquid outlet hole can be changed by rotating the adjusting ring, which can adapt to the filling needs of polyols with different viscosities and densities, improve the versatility and flexibility of the equipment, and improve the filling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic structural diagram of a polyol filling anti-drip filling head in a blocked state according to the utility model;

[0017] Figure 2 This is a schematic structural diagram of an anti-drip filling head for polyol filling in the utility model in an open state;

[0018] Figure 3This is a schematic diagram of the filling head body structure in the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the regulating tube in the utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the blocking module in the utility model;

[0021] Figure 6 It is a schematic diagram of the internal structure of the blocking sleeve in the utility model.

[0022] In the figure: 100, feeding pipe; 200, filling head body; 210, flange; 211, liquid outlet; 300, anti-drip unit; 310, adjusting tube; 311, slide groove; 312, adjusting ring; 313, boss; 314, circular hole; 315, notch; 320, blocking module; 321, fixing ring; 322, return spring; 323, moving ring; 3231, slider; 324, buffer ring; 325, blocking sleeve; 3251, docking groove; 3252, rubber plug; 3253, blocking block. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] See also Figures 1 to 6 In an embodiment of the utility model, a drip-proof filling head for polyol filling includes a feed pipe 100 installed on a polyol filling machine. The bottom end of the feed pipe 100 is fixedly connected to a filling head body 200 through a flange 210. A plurality of liquid outlet holes 211 are opened on the outer wall of the filling head body 200 near the bottom end. An anti-drip unit 300 is rotatably sleeved on the outer wall of the filling head body 200. The anti-drip unit 300 includes an adjusting tube 310. The inner wall of the adjusting tube 310 is rotatably sleeved on the outer wall of the filling head body 200. A blocking module 320 is provided on the outer wall of the anti-drip unit 300. The material of the filling head body 200 includes but is not limited to stainless steel or special alloy materials.

[0025] Specifically, before use, the filling head body 200 is fixedly connected to the feeding pipe 100 through the flange 210. During filling, when the filling machine extends the filling head body 200 into the container barrel, the sealing module 320 will no longer block the liquid outlet 211, so that the polyol is injected into the container barrel from the liquid outlet 211. The material of the filling head body 200 includes but is not limited to stainless steel or special alloy materials to maintain long-term stability and compatibility with polyols, and the inner wall of the filling head body 200 is polished to be relatively smooth, which reduces the adhesion of polyol to the inner wall of the filling head body 200 and reduces the risk of wall hanging and dripping.

[0026] Example 1

[0027] like Figure 2 、 Figure 4 and Figure 5 As shown, in this embodiment, the outer wall of the regulating tube 310 is symmetrically provided with two sliding grooves 311, the outer wall of the regulating tube 310 near the bottom end is provided with a boss 313, the surface of the boss 313 is provided with a circular hole 314, the top surface of the boss 313 is provided with a notch 315, the blocking module 320 includes a fixing ring 321, the inner wall of the fixing ring 321 is sleeved and fixed with the outer wall of the regulating tube 310, and the bottom surface of the fixing ring 321 is fixedly connected with a plurality of reset springs 322 at equal angles. The other end of the spring 322 is fixedly connected to the moving ring 323, and the bottom surface of the moving ring 323 is fixedly connected to the sealing sleeve 325. The inner walls of the moving ring 323 and the sealing sleeve 325 are slidably connected to the outer wall of the adjusting tube 310. Two sliders 3231 are symmetrically fixed to the inner wall of the moving ring 323, and the two sliders 3231 are slidably connected to the two sliding grooves 311 respectively. The outer wall of the sealing sleeve 325 is sleeved with a buffer ring 324, and the top surface of the buffer ring 324 is fixedly connected to the bottom surface of the moving ring 323.

[0028] In this embodiment, during filling, the filling head body 200 moves together with the anti-drip unit 300 toward the barrel mouth of the container. As the filling head body 200 extends into the barrel, the bottom surface of the buffer ring 324 is in close contact with the barrel mouth, forming a sealing effect to prevent polyol from leaking from the gap during the filling process. Since the slider 3231 and the slide groove 311 are slidably connected, when the filling head body 200 continues to move downward, the return spring 322 contracts, and the slider 3231 moves upward along the slide groove 311, so that the moving ring 323 carries the sealing sleeve 325 to The filling head 200 moves upward, thereby exposing the circular hole 314 to the outside. At this time, the polyol in the filling machine enters the filling head body 200 along the feeding pipe 100, and flows into the container barrel from the circular hole 314 through the liquid outlet 211 to realize filling. When the filling is completed, the filling head body 200 gradually moves upward, and the buffer ring 324 gradually loses the pressure exerted on it by the barrel mouth, so that the moving ring 323 moves downward under the rebound force of the return spring 322, so that the sealing sleeve 325 naturally blocks the notch 315 to avoid dripping.

[0029] like Figure 6 As shown, in this embodiment, the inner wall of the sealing sleeve 325 is provided with a docking groove 3251 that matches the boss 313, and the inner wall of the docking groove 3251 is fixedly connected to a rubber plug 3252. The inner wall of the docking groove 3251 is located above the rubber plug 3252 and is fixedly connected to a blocking block 3253, and the blocking block 3253 fits in with the notch 315.

[0030] In specific implementation, the rubber stopper 3252 is hemispherical in shape. When the filling is completed and the filling head body 200 moves upward, the sealing sleeve 325 will move downward under the elastic force of the movable ring 323, so that the rubber stopper 3252 passes through the notch 315 and is sealed in the circular hole 314. At the same time, the blocking block 3253 located above the rubber stopper 3252 is just engaged with the notch 315, preventing the polyol remaining in the filling head body 200 from leaking from the circular hole 314.

[0031] Example 2

[0032] On the basis of the first embodiment, in order to make up for the problem in the first embodiment that the filling head needs to be replaced repeatedly when filling polyols with different viscosities and densities.

[0033] like Figure 3-4 As shown, in this embodiment, the sizes of the plurality of liquid outlet holes 211 are reduced in sequence clockwise, and an adjusting ring 312 is sleeved and fixed on the outer wall of the adjusting tube 310 near the top.

[0034] In specific implementation, when filling polyols of different viscosities and densities, the adjustment ring 312 can be held and rotated to cause the adjustment ring 312 to drive the adjustment tube 310 to rotate, so that the circular hole 314 is aligned with the liquid outlet hole 211 of the required aperture. The operation is simple and quick, and there is no need to stop the machine to replace the entire filling head or perform complex adjustments, thereby improving the filling efficiency.

[0035] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0036] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A drip-proof filling head for polyol filling, characterized in that: The invention comprises a feeding pipe (100) installed on a polyol filling machine, wherein the bottom end of the feeding pipe (100) is fixedly connected to a filling head body (200) via a flange (210), a plurality of liquid outlet holes (211) are provided on the outer wall of the filling head body (200) near the bottom end, an anti-drip unit (300) is rotatably sleeved on the outer wall of the filling head body (200), the anti-drip unit (300) comprises an adjusting tube (310), the inner wall of the adjusting tube (310) is rotatably sleeved on the outer wall of the filling head body (200), and a blocking module (320) is provided on the outer wall of the anti-drip unit (300).

2. The anti-drip filling head for polyol filling according to claim 1, characterized in that: The material of the filling head body (200) includes but is not limited to stainless steel or special alloy materials.

3. The anti-drip filling head for polyol filling according to claim 1, characterized in that: Two chute grooves (311) are symmetrically provided on the outer wall of the regulating tube (310), a boss (313) is provided on the outer wall of the regulating tube (310) near the bottom end, a circular hole (314) is provided on the surface of the boss (313), and a notch (315) is provided on the top surface of the boss (313).

4. The anti-drip filling head for polyol filling according to claim 1, characterized in that: The blocking module (320) includes a fixed ring (321), the inner wall of the fixed ring (321) and the outer wall of the regulating tube (310) are sleeved and fixed, the bottom surface of the fixed ring (321) is fixedly connected with a plurality of return springs (322) at equal angles, the other ends of the plurality of return springs (322) are fixedly connected with a movable ring (323), the bottom surface of the movable ring (323) is fixedly connected with a blocking sleeve (325), the inner walls of the movable ring (323) and the blocking sleeve (325) are slidably sleeved with the outer wall of the regulating tube (310), and two sliders (3231) are symmetrically fixed to the inner wall of the movable ring (323), and the two sliders (3231) are slidably connected with the two slide grooves (311) respectively.

5. The anti-drip filling head for polyol filling according to claim 4, characterized in that: A buffer ring (324) is sleeved on the outer wall of the blocking sleeve (325), and the top surface of the buffer ring (324) and the bottom surface of the movable ring (323) are fixedly connected.

6. The anti-drip filling head for polyol filling according to claim 4, characterized in that: The inner wall of the sealing sleeve (325) is provided with a docking groove (3251) matching the boss (313), the inner wall of the docking groove (3251) is fixedly connected with a rubber plug (3252), and the inner wall of the docking groove (3251) is located above the rubber plug (3252) and is fixedly connected with a blocking block (3253), and the blocking block (3253) and the notch (315) are in harmony.

7. The anti-drip filling head for polyol filling according to claim 1, characterized in that: The sizes of the plurality of liquid outlet holes (211) are reduced in sequence clockwise, and an adjusting ring (312) is sleeved and fixed on the outer wall of the adjusting tube (310) near the top.

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