A solidifying agent and diluent negative pressure type outlet for 3kg metal barrels
By designing a negative pressure outlet and utilizing a cross-shaped silicone negative pressure leak-proof structure, the waste and safety hazards of pouring hardener and diluent from metal drums into the main agent were solved, achieving safe and environmentally friendly reagent dispensing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CRRC CHANGCHUN RAILWAY VEHICLES CO LTD
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-09
AI Technical Summary
The existing 3KG metal drums containing curing agent and diluent are prone to overflowing from the edge of the drum when the main agent is poured in, causing waste and safety hazards.
Design a negative pressure outlet that utilizes a cross-shaped silicone negative pressure leak-proof structure. The reagent is poured into the main agent by squeezing, and a backflow tendency is formed when the external pressure is greater than the internal pressure to avoid dripping.
It achieves safe and environmentally friendly reagent dispensing, avoiding waste and safety hazards, and meeting environmental protection design requirements.
Smart Images

Figure CN224336139U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rail vehicle coating technology, and in particular to a negative pressure outlet for curing agent and diluent in a 3KG metal drum. Background Technology
[0002] Currently, the coating process for rail vehicles involves accurately measuring the hardener using metering tools according to a mixing ratio. The hardener is slowly poured into a container containing the base agent, and a stirrer is used to thoroughly mix the base agent and hardener. The thinner is then slowly poured into the mixed base agent and hardener, and the mixture is stirred until it is homogeneous, ensuring the paint viscosity and flowability meet the application requirements. However, when using 3HG metal drums containing hardener and thinner, a small amount of hardener and thinner may leak from the edge of the drum when only a small amount is poured into the base agent. This results in waste, is environmentally unfriendly, and poses a safety hazard.
[0003] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a negative pressure outlet for curing agents and diluents for 3KG metal drums. Utility Model Content
[0004] The purpose of this invention is to provide a negative pressure test outlet for curing agent and diluent in a 3KG metal drum. This negative pressure outlet uses a cross-shaped silicone negative pressure leak-proof structure to pour the curing agent and diluent onto the main agent by squeezing. After the squeezing pressure is removed, when the external pressure is greater than the internal pressure, the internal pressure of the curing agent and diluent will tend to be drawn back, avoiding dripping and meeting the design requirements for safety and environmental protection.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] This utility model discloses a negative pressure outlet for a curing agent and diluent in a 3KG metal drum, wherein the negative pressure outlet is installed at the mouth of the metal drum.
[0007] The negative pressure outlet is divided into an installation body and a deformable body;
[0008] The negative pressure outlet is connected to the opening of the metal bucket through the mounting body, and the deformable body is located at the end of the mounting body that is placed outside the metal bucket;
[0009] The deformable body communicates with the internal space of the metal barrel through the mounting body, and drives the reagent in the metal barrel out by squeezing and deforming in a negative pressure manner.
[0010] Furthermore, the mounting body is configured within a conical cylindrical structure, and the interior of the mounting body is hollow;
[0011] The lower part of the cone of the mounting body is uniformly machined with multiple air holes;
[0012] The negative pressure outlet is connected to the internal space of the metal barrel through the air hole of the mounting body.
[0013] Furthermore, the outer wall of the upper part of the mounting body is provided with external threads, and the lower structure of the mounting body with multiple air holes can extend into the metal barrel;
[0014] The mounting body is connected to the opening of the metal barrel via an external thread on its upper part.
[0015] Furthermore, the deformable body includes:
[0016] A deformable body connecting part, wherein the deformable body is connected to the end of the mounting body through the deformable body connecting part;
[0017] A protrusion located at the center of the deformable body connection and extending beyond the deformable body connection has a cross-shaped mark at its end, and the center of the cross-shaped mark is the reagent outlet.
[0018] Furthermore, the deformable body is made of silicone.
[0019] Furthermore, the mounting body is made of a rigid material.
[0020] Furthermore, the mounting body is made of metal or hard plastic.
[0021] In the above technical solution, the negative pressure outlet for curing agent and diluent in a 3KG metal drum provided by this utility model has the following beneficial effects:
[0022] The negative pressure outlet of this utility model utilizes a cross-shaped silicone negative pressure leak-proof structure to pour the curing agent and diluent onto the main agent by extrusion. After the extrusion pressure is removed, when the external pressure is greater than the internal pressure, the internal pressure curing agent and diluent will tend to be drawn back, avoiding dripping and meeting the design requirements for safety and environmental protection. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0024] Figure 1 This is a schematic diagram of a negative pressure outlet for a curing agent and diluent in a 3KG metal drum, as disclosed in an embodiment of this utility model.
[0025] Figure 2This is a cross-sectional view of a negative pressure outlet for a curing agent and diluent in a 3KG metal drum, as disclosed in an embodiment of this utility model.
[0026] Figure 3 This is an enlarged cross-sectional view of the negative pressure outlet of a 3KG metal drum for hardener and diluent, as disclosed in an embodiment of this utility model.
[0027] Figure 4 This is an enlarged view of the negative pressure outlet of a 3KG metal drum for using a curing agent and diluent, as disclosed in an embodiment of this utility model.
[0028] Explanation of reference numerals in the attached figures:
[0029] 1. Metal drum; 2. Negative pressure outlet;
[0030] 101. Bucket opening;
[0031] 201. Mounting body; 202. Vent; 203. Deformable body connecting part; 204. Protrusion; 205. Reagent outlet; 206. Cross-shaped mark. Detailed Implementation
[0032] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0033] See Figures 1 to 4 As shown;
[0034] This embodiment provides a negative pressure outlet 2 for a 3KG metal drum containing a curing agent and a diluent. The negative pressure outlet 2 is installed at the mouth 101 of the metal drum 1.
[0035] The negative pressure outlet 2 is divided into an installation body 201 and a deformable body;
[0036] The negative pressure outlet 2 is connected to the opening 101 of the metal barrel 1 through the mounting body 201, and the deformable body is located at the end of the mounting body 201 that is placed outside the metal barrel 1.
[0037] The deformable body is connected to the internal space of the metal barrel 1 through the mounting body 201, and the reagent in the metal barrel 1 is discharged by squeezing and deforming in a negative pressure manner.
[0038] Specifically, this embodiment discloses a negative pressure outlet 2 suitable for 3KG metal drums. It is mainly used to discharge the internal curing agent and diluent through the negative pressure generated by the deformation of the negative pressure outlet 2. At the same time, due to the existence of deformation negative pressure, when the external pressure is greater than the internal pressure, the negative pressure outlet 2 also has a back-pull effect to prevent reagent leakage, which is safe and environmentally friendly.
[0039] Specifically, in this embodiment, the negative pressure outlet 2 is installed at the opening 101 of the metal container 1. The negative pressure outlet 2 includes an installation body 201 and a deformable body. The installation body 201 is used to connect to the opening 101 of the metal container 1. Meanwhile, the deformable body is disposed on the installation body 201. When it is necessary to pour out the internal reagent, negative pressure can be generated by squeezing the deformable body, and the reagent can be discharged through the outlet of the deformable body in a negative pressure manner. At the same time, when the external pressure is greater than the internal pressure, a reverse backflow effect is generated at the deformable body, which can prevent the reagent from leaking out.
[0040] Preferably, in this embodiment, the mounting body 201 is configured on a conical cylinder structure, and the interior of the mounting body 201 is hollow; wherein, the lower part of the conical cylinder of the mounting body 201 is uniformly machined with a plurality of air holes 202; the negative pressure outlet 2 communicates with the internal space of the metal barrel 1 through the air holes 202 of the mounting body 201.
[0041] To facilitate installation and enable a sealed connection between the mounting body 201 and the opening 101 of the barrel, the upper outer wall of the mounting body 201 in this embodiment is provided with external threads. The lower structure of the mounting body 201 with multiple air holes 202 can extend into the metal barrel 1. The mounting body 201 is threadedly connected to the opening 101 of the metal barrel 1 through its upper external threads.
[0042] Preferably, the variant of this embodiment includes:
[0043] The deformable body is connected to the end of the mounting body 201 via the deformable body connecting part 203;
[0044] A protrusion 204 is located at the center of the deformable body connecting part 203 and protrudes from the deformable body connecting part 203. The end of the protrusion 204 is machined with a cross-shaped mark 206, and the center of the cross-shaped mark 206 is the reagent outlet 205.
[0045] This embodiment further defines the structure of the deformable body, which is connected to the mounting body 201 by a deformable body connecting part 203 with a cross-sectional dimension larger than that of the upper cross-sectional dimension of the mounting body 201. A protrusion 204 is formed at the center of the deformable body connecting part 203. At the same time, the protrusion 204 in this embodiment is machined with a cross-shaped mark 206. Due to the presence of the cross-shaped mark 206, the end of the protrusion 204 is formed to gradually protrude from the edge of the protrusion 204 to the center of the protrusion 204. The opening at the center of the cross-shaped mark 206 is formed as the reagent outlet 205 mentioned above.
[0046] Preferably, the deformable body in this embodiment is made of silicone.
[0047] Preferably, the mounting body in this embodiment is made of a rigid material.
[0048] Preferably, the mounting body in this embodiment is made of metal or rigid plastic.
[0049] In the above technical solution, the negative pressure outlet for curing agent and diluent in a 3KG metal drum provided by this utility model has the following beneficial effects:
[0050] The negative pressure outlet of this utility model utilizes a cross-shaped silicone negative pressure leak-proof structure to pour the curing agent and diluent onto the main agent by extrusion. After the extrusion pressure is removed, when the external pressure is greater than the internal pressure, the internal pressure curing agent and diluent will tend to be drawn back, avoiding dripping and meeting the design requirements for safety and environmental protection.
[0051] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A negative pressure outlet for curing agent and diluent in a 3KG metal drum, characterized in that, The negative pressure outlet (2) is installed at the mouth (101) of the metal barrel (1); The negative pressure outlet (2) is divided into an installation body (201) and a deformable body; The negative pressure outlet (2) is connected to the opening (101) of the metal bucket (1) through the mounting body (201), and the deformable body is located at the end of the mounting body (201) that is placed outside the metal bucket (1); The deformable body is connected to the internal space of the metal barrel (1) through the mounting body (201), and the reagent inside the metal barrel (1) is discharged by squeezing and deforming in a negative pressure manner.
2. The negative pressure outlet for curing agent and diluent in a 3KG metal drum according to claim 1, characterized in that, The mounting body (201) is configured in a conical structure, and the interior of the mounting body (201) is hollow; The lower part of the cone of the mounting body (201) is uniformly machined with multiple air holes (202); The negative pressure outlet (2) is connected to the internal space of the metal barrel (1) through the air hole (202) of the mounting body (201).
3. The negative pressure outlet for curing agent and diluent in a 3KG metal drum according to claim 2, characterized in that, The upper outer wall of the mounting body (201) is provided with external threads, and the lower structure of the mounting body (201) with multiple air holes (202) can extend into the metal barrel (1); The mounting body (201) is threadedly connected to the opening (101) of the metal bucket (1) via its external thread.
4. A negative pressure outlet for curing agent and diluent in a 3KG metal drum according to claim 2 or 3, characterized in that, The deformable body includes: Deformable body connecting part (203), the deformable body is connected to the end of the mounting body (201) through the deformable body connecting part (203); A protrusion (204) located at the center of the deformable body connecting part (203) and protruding from the deformable body connecting part (203) has a cross-shaped mark (206) processed at the end of the protrusion (204), and the center of the cross-shaped mark (206) is the reagent outlet (205).
5. The negative pressure outlet for curing agent and diluent in a 3KG metal drum according to claim 4, characterized in that, The deformable body is made of silicone.
6. The negative pressure outlet for curing agent and diluent in a 3KG metal drum according to claim 2, characterized in that, The mounting body (201) is made of a hard material.
7. The negative pressure outlet for curing agent and diluent in a 3KG metal drum according to claim 6, characterized in that, The mounting body (201) is made of metal or hard plastic.