Anti-dripping filling needle head
By introducing a check valve structure into the filling needle, the static balance is achieved using the weight of the liquid and atmospheric pressure, the problem of liquid dripping during the filling process is solved, and the effect of anti-dripping is achieved.
Patent Information
- Application Number
- CN202422779478.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-11-14
AI Technical Summary
The existing filling needles can easily cause liquid dripping when the filling speed is too fast, making it difficult to effectively suppress it.
The check valve structure is adopted, consisting of a valve core and a spring, and the static balance of the cavity is achieved by using the weight of the liquid and atmospheric pressure. The sealed cavity is sealed through the valve core to inhibit liquid dripping.
It effectively prevents the liquid from dripping after filling, achieving the anti-drip effect of the filling process.
Smart Images
Figure CN223253431U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of filling machines, in particular to a drip-proof filling needle. Background Art
[0002] Liquid filling is widely used in various industries, including food, pharmaceuticals, daily chemicals, and oils, and can fill a variety of high-viscosity fluids. Existing filling needles are ordinary straight stainless steel tubes with smooth inner walls. The upper end of the filling needle is connected to the filling machine's discharge pipe, and the lower end of the filling needle is the discharge port. Each withdrawal of the filling machine's piston pump is used to suppress dripping. Excessive filling speed may cause dripping. Summary of the Invention
[0003] The purpose of the present invention is to address the deficiencies of the above-mentioned prior art and to provide a drip-proof filling needle. The filling needle utilizes the gravity balance principle of the liquid inside the cavity to form a closed space inside the cavity after each filling, thereby inhibiting liquid dripping.
[0004] The technical solutions adopted in this utility model are as follows:
[0005] A drip-proof filling needle comprises an upper filling seat, a lower filling seat and a needle. The lower port of the upper filling seat is provided with an external thread and is covered with a sealing ring. The upper port of the lower filling seat is provided with an internal thread. The external thread of the upper filling seat is tightly matched with the internal thread of the lower filling seat. A closed cavity is formed between the upper filling seat and the lower filling seat. The top of the upper filling seat is provided with a liquid inlet pipe with a threaded structure. The bottom of the lower filling seat is connected to the top of the needle. A check valve is provided in the cavity. The check valve consists of a valve core and a spring. The valve core is blocked at the lower port of the upper filling seat. One end of the spring abuts against the bottom of the valve core, and the other end of the spring abuts against the bottom of the cavity.
[0006] Preferably, the upper filling seat, the lower filling seat and the needle are all made of stainless steel.
[0007] Preferably, the valve core is a hollow structure.
[0008] Preferably, the needle is a hollow cylinder, and the needle and the cavity are communicated with each other.
[0009] The beneficial effects of the utility model are as follows: the utility model adds a check valve, which is composed of a valve core and a spring. At the beginning of a round of filling, the liquid pushes the valve core open from top to bottom to carry out filling. After the filling is completed, the spring rebounds to make the valve core upward to block the lower port of the upper filling seat, so that the liquid inside the cavity achieves static balance under the action of atmospheric pressure and gravity, thereby suppressing liquid dripping. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural diagram of the utility model;
[0011] Figure 2 This is an exploded view of the utility model;
[0012] In the figure, 1, upper filling seat; 2, lower filling seat; 3, needle; 4, external thread; 5, sealing ring; 6, internal thread; 7, cavity; 8, liquid inlet pipe; 9, valve core; 10, spring. DETAILED DESCRIPTION
[0013] The present invention will be further described below with reference to the accompanying drawings:
[0014] like Figure 1-2 As shown, the utility model is a drip-proof filling needle comprising an upper filling seat 1, a lower filling seat 2 and a needle 3, all of which are made of stainless steel; the lower port of the upper filling seat 1 is provided with an external thread 4 and is covered with a sealing ring 5, and the upper port of the lower filling seat 2 is provided with an internal thread 6. The external thread 4 of the upper filling seat 1 is tightly matched with the internal thread 6 of the lower filling seat 2, so that a closed cavity 7 is formed between the upper filling seat 1 and the lower filling seat 2 to prevent liquid leakage.
[0015] The top of the upper filling seat 1 in the present invention is provided with a liquid inlet pipe 8 with a threaded structure, which can effectively prevent the pipe from falling off when connected to the discharge pipe of the filling machine.
[0016] The bottom of the lower filling seat 2 in the present invention is connected to the top of the needle 3, wherein the needle 3 is a hollow cylinder, and the needle 3 and the cavity 7 are connected to each other, so that the liquid can flow out from the liquid outlet at the bottom of the needle 3.
[0017] A check valve with a hollow structure is provided in the cavity 7 of the present invention, through which liquid can pass under pressure; the check valve consists of a valve core 9 and a spring 10, the valve core 9 is blocked at the lower port of the upper filling seat 1, one end of the spring 10 abuts against the bottom of the valve core 9, and the other end of the spring 10 abuts against the bottom of the cavity 7; when the filling stops, the spring 10 rebounds to push the valve core 9 upward to block the lower port of the upper filling seat 1, so that the liquid inside the upper filling seat 1 achieves static balance under the action of atmospheric pressure and gravity, thereby suppressing liquid dripping.
[0018] The use process of this utility model is as follows:
[0019] During use, first tighten the external thread 4 of the upper filling seat 1 and the internal thread 6 of the lower filling seat 2 to form a closed cavity 7 between the upper filling seat 1 and the lower filling seat 2 to prevent liquid leakage; then connect the liquid inlet pipe 8 on the top of the upper filling seat 1 to the discharge pipe of the filling machine. At the beginning of a round of filling, the liquid pushes the valve core 9 from top to bottom for filling. After the filling is completed, the spring 10 rebounds and pushes the valve core 9 upward to seal the lower port of the upper filling seat 1, so that the liquid inside the upper filling seat 1 achieves static balance under the action of atmospheric pressure and gravity, thereby inhibiting liquid dripping.
[0020] Other unexplained parts of the present invention are the same as those of the prior art.
Claims
1. A drip-proof filling needle, characterized by It comprises an upper filling seat (1), a lower filling seat (2) and a needle (3), wherein the lower port of the upper filling seat (1) is provided with an external thread (4) and is covered with a sealing ring (5), and the upper port of the lower filling seat (2) is provided with an internal thread (6), the external thread (4) of the upper filling seat (1) and the internal thread (6) of the lower filling seat (2) are screwed together, and a closed cavity (7) is formed between the upper filling seat (1) and the lower filling seat (2), and the upper filling seat (1) is provided with an internal thread (6) and an internal thread (7) of the lower filling seat (2). ) is provided with a liquid inlet pipe (8) with a threaded structure on the top of the lower filling seat (2), the bottom of the lower filling seat (2) is connected to the top of the needle (3), a check valve is provided in the cavity (7), the check valve is composed of a valve core (9) and a spring (10), the valve core (9) is blocked at the lower port of the upper filling seat (1), one end of the spring (10) is in contact with the bottom of the valve core (9), and the other end of the spring (10) is in contact with the bottom of the cavity (7).
2. The anti-drip filling needle according to claim 1, characterized in that The upper filling seat (1), the lower filling seat (2) and the needle (3) are all made of stainless steel.
3. The anti-drip filling needle according to claim 1, characterized in that The valve core (9) is a hollow structure.
4. The anti-drip filling needle according to claim 1, characterized in that The needle head (3) is a hollow cylinder, and the needle head (3) and the cavity (7) are in communication with each other.