A jet feeder for the preparation of water-based paints

Abstract

This utility model discloses a spray feeding device for preparing water-based coatings, including a spray body comprising a spray head and a nozzle; a leak-proof component disposed inside the spray head to seal the spray channel of the spray head when coating feeding stops; and a mixing component threadedly connected inside the spray head to mix the coating during delivery. This utility model provides a spray feeding device for preparing water-based coatings. By incorporating a leak-proof component, the device utilizes the elastic potential energy of a spring to push a conical seal plug, automatically sealing the spray channel when feeding stops. This effectively solves the problem of coating dripping due to gravity in traditional devices, avoiding raw material waste and maintaining raw material cleanliness. The built-in mixing component features an arc-shaped converging channel, enabling the flowing coating to generate rotational convection, physically stirring and mixing the coating before spraying, preventing sedimentation or stratification, and improving the mixing efficiency of the subsequent reaction vessel.

Description

Technical Field

[0001] This utility model relates to the field of coating production equipment technology, and in particular to a spray feeding device for the preparation of water-based coatings. Background Technology

[0002] In the production process of water-based coatings, it is often necessary to inject the coating or additives into a reaction vessel or mixing tank through a feeding device. Existing feeding devices are simple in structure, typically consisting of only a simple delivery pipeline, and have the following problems:

[0003] Easy to drip: When feeding stops, the coating residue in the pipeline is prone to dripping due to gravity, which not only wastes raw materials, but also pollutes the production environment or the reactor lid.

[0004] Uneven mixing: During the transportation process, the coating may have precipitated or been insufficiently mixed, which will affect the reaction effect if it is directly injected into the reactor. Utility Model Content

[0005] Therefore, it is necessary to provide a spraying and feeding device for preparing water-based coatings that is leak-proof, premixed, and easy to disassemble and maintain, in order to address the above-mentioned technical problems.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A spray feeding device for preparing water-based coatings includes:

[0008] A spray body, comprising a spray head and a nozzle, wherein the spray head and the nozzle are detachably connected;

[0009] The spray head has a threaded fixed end, which is connected to a supply conduit for injecting paint;

[0010] A leak-proof component is provided inside the spray head to seal the spray channel of the spray head when the paint application stops;

[0011] The mixing assembly, threadedly connected inside the spray head, is used to mix the paint during delivery.

[0012] Furthermore, the connecting end of the nozzle is provided with an internal thread, and the outer wall of the connecting end of the spray head is provided with an external thread that mates with it.

[0013] Furthermore, the nozzle has an expansion chamber in the middle, and the diameters of both the inlet end and the spray end of the nozzle are smaller than the diameter of the expansion chamber.

[0014] Furthermore, the anti-leakage component includes a hollow bracket fixedly installed on the inner wall of the nozzle and a guide rod slidably connected to the middle of the hollow bracket. One end of the guide rod has a conical sealing plug, and the conical sealing plug and the hollow bracket are elastically engaged by a spring.

[0015] Furthermore, a sealing ring is embedded in the outer wall of the conical sealing plug, and the spring provides elastic potential energy to the conical sealing plug to overcome the gravity of the coating so as to push the conical sealing plug against the inner wall of the spray head.

[0016] Furthermore, the mixing component includes a cylindrical flow guide structure, the outer wall of which is threadedly fixed to the inner wall of the spray head.

[0017] Furthermore, the nozzle and the injection head are threaded together and then pressed against the cylindrical guide structure.

[0018] Furthermore, the inner wall of the cylindrical flow guide structure has multiple sets of arc-shaped converging channels, which are arranged in a ring array around the axis of the cylindrical flow guide structure.

[0019] Furthermore, the arc-shaped confluence channel is planar or spiral inclined.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] This utility model provides a spray feeding device for the preparation of water-based coatings. By incorporating a leak-proof component, the device utilizes the elastic potential energy of a spring to push a conical seal to block the flow, automatically closing the spray channel when feeding stops. This effectively solves the problem of coating leakage caused by gravity in traditional devices, avoiding raw material waste and maintaining the cleanliness of the production environment and raw materials. The built-in mixing component has an arc-shaped confluence channel, which enables the flowing coating to generate rotational convection, physically stirring and mixing the coating before spraying, preventing sedimentation or stratification, and improving the mixing efficiency of the subsequent reaction vessel. The spray head and nozzle are connected by a detachable threaded connection, and the mixing component is also fixed by a thread. After the nozzle is assembled, it can press against the mixing component, resulting in a stable structure. All components can be quickly disassembled for convenient regular cleaning and maintenance. Attached Figure Description

[0022] Figure 1 A schematic diagram of the overall structure of a spray feeding device for preparing water-based coatings provided by this utility model;

[0023] Figure 2 A cross-sectional structural diagram of a spray feeding device for preparing water-based coatings provided by this utility model;

[0024] Figure 3A cross-sectional structural schematic diagram of a spray feeding device for preparing water-based coatings provided by this utility model;

[0025] Figure 4 A schematic diagram of the anti-leakage component of a spray feeding device for preparing water-based coatings provided by this utility model;

[0026] Figure 5 This is a cross-sectional structural diagram of the mixing component of a spray feeding device for preparing water-based coatings, provided by this utility model.

[0027] The markings in the diagram are explained as follows:

[0028] 1. Spray body; 11. Spray head; 12. Nozzle; 13. Threaded fixing end; 14. Expansion chamber;

[0029] 2. Leak-proof components; 21. Hollowed-out bracket; 22. Guide rod; 23. Conical sealing plug; 24. Spring;

[0030] 3. Mixing component; 31. Cylindrical guide structure; 32. Arc-shaped confluence channel. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention 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 invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0032] Example 1

[0033] Please refer to Figure 1-5 A spray feeding device for preparing water-based coatings, comprising:

[0034] The spray body 1 includes a spray head 11 and a nozzle 12, which are detachably connected;

[0035] The spray head 11 has a threaded fixed end 13, which is connected to the supply conduit for injecting paint;

[0036] Leakage prevention component 2 is installed inside the spray head 11 to seal the spray channel of the spray head 11 when the paint application stops;

[0037] The mixing component 3 is threadedly connected inside the spray head 11 and is used to mix the paint during the delivery of the paint.

[0038] Example 2

[0039] The spray feeding device for preparing water-based coatings provided in Embodiment 1 is further optimized. Specifically, the connecting end of the nozzle 12 is provided with an internal thread, the outer wall of the connecting end of the spray head 11 is provided with an external thread that matches it, the middle part of the nozzle 12 has an expansion chamber 14, and the diameters of the inlet end and the spray end of the nozzle 12 are both smaller than the diameter of the expansion chamber 14.

[0040] Specifically, the threaded fixing end 13 is used to connect with the external paint supply conduit, such as the outlet pipe of the feed pump, to ensure a tight and leak-free connection. The inlet end of the nozzle 12 is provided with an internal thread that matches the external thread connection part of the spray head 11, thereby realizing a detachable connection with the spray head 11. This detachable design facilitates thorough cleaning and maintenance of the device's interior.

[0041] The design of expansion chamber 14 can reduce the fluid velocity, which is beneficial for forming a more stable flow field in the subsequent mixing and jetting process.

[0042] Example 3

[0043] The spray feeding device for preparing water-based coatings provided in Embodiment 1 or 2 is further optimized. The anti-leakage component 2 includes a hollow bracket 21 fixedly installed on the inner wall of the nozzle 12 and a guide rod 22 slidably connected to the middle of the hollow bracket 21. One end of the guide rod 22 has a conical sealing plug 23, and the conical sealing plug 23 and the hollow bracket 21 are elastically engaged by a spring 24.

[0044] A sealing ring is also embedded in the outer wall of the conical sealing plug 23, and the spring 24 provides the conical sealing plug 23 with elastic potential energy to overcome the gravity of the paint so as to push the conical sealing plug 23 against the inner wall of the spray head 11.

[0045] Specifically, under natural conditions without pressure to deliver paint, the spring 24 releases its elastic force, pushing the guide rod 22 to slide, causing the conical sealing plug 23 to move upward along the direction of the spray head and press tightly against the outlet of the internal flow channel of the spray head 11. The outer wall of the conical sealing plug 23 is embedded with a sealing ring, which forms an interference fit with the inner wall of the spray head 11, completely sealing the flow channel and preventing residual paint from dripping.

[0046] When the feed pump starts and the paint flows in at a certain pressure, the hydraulic pressure overcomes the elastic force of the spring 24, pushing the conical seal plug 23 to move backward, opening the channel, and allowing the paint to pass through.

[0047] Example 4

[0048] The spray feeding device for preparing water-based coatings provided in Embodiment 3 is further optimized. The mixing component 3 includes a cylindrical guide structure 31. The outer wall of the cylindrical guide structure 31 is threadedly fixed to the inner wall of the spray head 11. After the nozzle 12 is threadedly assembled with the spray head 11, it abuts against the cylindrical guide structure 31.

[0049] The inner wall of the cylindrical flow guide structure 31 has multiple sets of arc-shaped converging channels 32. The multiple sets of arc-shaped converging channels 32 are arranged in a ring array around the axis of the cylindrical flow guide structure 31. The arc-shaped converging channels 32 are planar or spiral inclined. The spiral inclined design can give the fluid a tangential velocity, generate swirling flow, and further enhance the mixing effect.

[0050] Specifically, when the coating passes through the cylindrical guide structure 31, it is divided into multiple streams of fluid by multiple sets of arc-shaped converging channels 32. Since the arc-shaped converging channels 32 are arc-shaped or spiral-shaped, the fluid rotates or collides, thereby achieving efficient physical mixing when they converge, solving the problem of coating deposition or uneven mixing.

[0051] The following is the usage process of the spray feeding device for preparing water-based coatings provided by this utility model:

[0052] The entire device is connected to the paint supply conduit via the threaded fixing end 13;

[0053] Start the feed pump, and the paint enters the spray head 11 under pressure.

[0054] The pressurized paint continues to flow downwards, impacting the conical seal plug 23. When the fluid pressure exceeds the elastic force of the spring 24, the conical seal plug 23 is pushed downwards, compressing the spring 24 and opening the spray channel.

[0055] The coating first flows through the mixing component 3, where it is guided by the arc-shaped converging channel 32 to generate rotating turbulence and complete the initial mixing. After being accelerated and diffused through the expansion chamber 14, the coating is sprayed out from the nozzle 12 and enters the reactor.

[0056] When the feed pump is turned off, the pressure in the pipeline decreases. The spring 24 returns to its original position using its elastic potential energy, pushing the conical sealing plug 23 upward and pressing it against the inner wall of the spray head 11 again. Due to the sealing effect of the sealing ring, the paint remaining in the device is sealed in the flow channel and will not leak.

[0057] For thorough cleaning, unscrew nozzle 12 and remove leak-proof component 2 and mixing component 3 for cleaning.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; conversely, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A spray feeding device for preparing water-based coatings, characterized in that, It includes: The spray body (1) includes a spray head (11) and a nozzle (12), which are detachably connected; The spray head (11) has a threaded fixed end (13), which is connected to the supply conduit for injecting paint; A leak-proof component (2) is provided inside the spray head (11) to seal the spray channel of the spray head (11) when the paint is stopped being applied; The mixing component (3) is threaded inside the spray head (11) and is used to mix the paint during the delivery of the paint. The mixing component (3) includes a cylindrical flow guide structure (31), the outer wall of which is threadedly fixed to the inner wall of the spray head (11); The inner wall of the cylindrical flow guide structure (31) has multiple sets of arc-shaped converging channels (32), which are arranged in a ring array around the axis of the cylindrical flow guide structure (31).

2. The spray feeding device for preparing water-based coatings according to claim 1, characterized in that, The nozzle (12) has an internal thread at its connecting end, and the outer wall of the connecting end of the spray head (11) has an external thread that matches it.

3. The spray feeding device for preparing water-based coatings according to claim 2, characterized in that, The nozzle (12) has an expansion chamber (14) in the middle, and the diameters of the inlet end and the spray end of the nozzle (12) are both smaller than the diameter of the expansion chamber (14).

4. The spray feeding device for preparing water-based coatings according to claim 1, characterized in that, The anti-leakage component (2) includes a hollow bracket (21) fixedly installed on the inner wall of the nozzle (12) and a guide rod (22) slidably connected to the middle of the hollow bracket (21). One end of the guide rod (22) has a conical sealing plug (23), and the conical sealing plug (23) and the hollow bracket (21) are elastically engaged by a spring (24).

5. A spray feeding device for preparing water-based coatings according to claim 4, characterized in that, A sealing ring is also embedded in the outer wall of the conical sealing plug (23), and the spring (24) provides the conical sealing plug (23) with elastic potential energy to overcome the gravity of the coating so as to push the conical sealing plug (23) against the inner wall of the spray head (11).

6. The spray feeding device for preparing water-based coatings according to claim 5, characterized in that, After the nozzle (12) and the spray head (11) are threaded together, they abut against the cylindrical guide structure (31).

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