Polyurethane foaming machine mixing head anti-blocking structure

Abstract

The utility model relates to the technical field of polyurethane production provides polyurethane foaming machine mixing head prevents the structure of blocking, including mixing head body, the outside of mixing head body bottom is provided with the dismantling structure. The utility model discloses is provided with dismantling structure, under the extrusion of mixing head body, the limit seat will rotate in the inside of fixed frame, under the elastic force of reset spring, will drive limit seat reset, under the spacing of limit post and limit groove, make the discharge port and mixing head body fixed each other, under the action of sealing washer, the sealing property between discharge port and mixing head body has been strengthened, promotes the top of limit seat, makes limit seat and limit post separate each other, and further makes the discharge port and mixing head body separate each other to clean the inner wall of teflon coating conveniently, has realized the function that the device is convenient to clean to improve the applicability of this polyurethane foaming machine mixing head prevents the structure when using.

Description

Technical Field

[0001] This utility model relates to the field of polyurethane production technology, and in particular to an anti-clogging structure for the mixing head of a polyurethane foaming machine. Background Technology

[0002] Polyurethane is a polymer material formed by polycondensation reaction of polyols and polyisocyanates. When producing polyurethane, a foaming machine is required. In order to prevent the mixing head of the foaming machine from getting clogged, a polyurethane foaming machine mixing head anti-clogging structure is used.

[0003] To address this, patent CN213353271U discloses an automatic foaming head for high-viscosity polyurethane, comprising a foaming machine cylinder and a head reaction chamber. The head reaction chamber is bolted to one end of the foaming machine cylinder, and a pressurizing device and a connecting seat are located above the head reaction chamber. A first motor is located above the connecting seat, and a stirring shaft is located at the output end of the first motor. Stirring blades are mounted on the stirring shaft inside the head reaction chamber, and a cleaning structure is provided on the side wall of the head reaction chamber. A nozzle is bolted to the bottom of the head reaction chamber, and the nozzle is equipped with an anti-clogging structure. This invention provides an automatic foaming head for high-viscosity polyurethane. The cleaning structure cleans the inner wall of the reaction chamber, preventing the foaming agent from adhering to the inner wall, making cleaning convenient. The anti-clogging structure prevents nozzle clogging and leakage during mixing, making it relatively convenient.

[0004] Although the automatic foaming head for high-viscosity polyurethane described above can prevent nozzle clogging and leakage during mixing through its anti-clogging structure, it is inconvenient to disassemble and clean the inner wall of the mixing head. Although the scraper can clean the inner wall of the reaction chamber, it is inconvenient to clean the scraper itself, resulting in low applicability in use. Utility Model Content

[0005] The purpose of this invention is to provide an anti-clogging structure for the mixing head of a polyurethane foaming machine, in order to solve the defect that the existing anti-clogging structure for the mixing head of a polyurethane foaming machine is inconvenient to disassemble.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a polyurethane foam machine mixing head anti-clogging structure, including a mixing head body;

[0007] The bottom outer side of the mixing head body is provided with a disassembly structure. The disassembly structure includes a discharge port provided on the bottom outer side of the mixing head body. Both sides of the discharge port are fixed with a fixing frame. The inside of the fixing frame is hinged with a limit seat. A sealing ring is provided at the bottom of the discharge port. A limit groove is opened on one side of the top of the limit seat. A limit post passes through the inside of the limit groove. A reset spring is evenly fixed on both sides of the bottom of the limit seat.

[0008] A heating structure is provided on the outer side of the mixing head body;

[0009] The inner wall of the mixing head body is coated with Teflon, and the outer side of the top of the mixing head body is provided with a rinsing structure.

[0010] When using this device, the detachable structure facilitates cleaning, thus improving the applicability of the polyurethane foam machine mixing head anti-clogging structure; the heating structure facilitates anti-clogging, thus improving the ease of use; and the rinsing structure facilitates removal of residues, thus improving the comfort of use.

[0011] Preferably, the heating structure includes a heating base, a heating chamber, a temperature sensor, and a heating wire. The heating base is fixed to the outside of the mixing head body, and the heating chamber is provided inside the heating base. The heating wire is fixed inside the heating chamber, and the temperature sensor passes through one side of the bottom of the mixing head body below the heating base. Under the action of the heating wire, the interior of the heating chamber can be heated, so that the heat can heat the material inside the Teflon coating, preventing the material from prematurely solidifying inside the Teflon coating due to excessively low temperature, thereby avoiding blockage.

[0012] Preferably, the output terminal of the temperature sensor is electrically connected to the input terminal of the heating wire via a microcontroller, and the inner side of the heating wire is in contact with the outer side of the mixing head body. Under the action of the temperature sensor, the temperature inside the Teflon coating can be monitored in real time. When the temperature reaches a preset value, the temperature sensor will control the heating wire to stop working via the microcontroller.

[0013] Preferably, the flushing structure includes a diversion seat, a flushing pipe, and a water inlet pipe. The diversion seat is fixed to the outer side of the top of the mixing head body, the flushing pipe is uniformly fixed to the inner side of the diversion seat, and the water inlet pipe is fixed to the outer side of the diversion seat.

[0014] Preferably, one end of the flushing pipe is connected to the Teflon coating, and a one-way valve is installed at one end inside the flushing pipe. A flange is fixed to the outside of one end of the water inlet pipe. The flange facilitates the connection of an external water pump. After the material is discharged, the one-way valve is opened, allowing the water inside the diverter to be discharged through the flushing pipe, thereby flushing away any residual material and preventing material from solidifying and clogging.

[0015] Preferably, the top end of the sealing ring contacts the bottom end of the mixing head body, and the end of the return spring away from the limiting seat is fixedly connected to the inner wall of the fixing frame. Under the squeezing action of the mixing head body, the limiting seat will rotate inside the fixing frame. Under the elastic force of the return spring, the limiting seat will return to its original position. Under the limiting action of the limiting post and the limiting groove, the discharge port is fixed to the mixing head body.

[0016] Preferably, one end of the limiting post is fixedly connected to the outer wall of the mixing head body. The sealing ring enhances the seal between the discharge port and the mixing head body, pushing the top of the limiting seat to separate the limiting seat from the limiting post, thereby separating the discharge port from the mixing head body. This facilitates cleaning of the inner wall of the Teflon coating, and the Teflon coating reduces material adhesion.

[0017] The advantages of the anti-clogging structure for the mixing head of the polyurethane foaming machine provided by this utility model are as follows:

[0018] With a disassembly structure, the limiting seat rotates inside the fixed frame under the squeezing action of the mixing head body. Under the elastic force of the return spring, the limiting seat returns to its original position. Under the limiting action of the limiting post and the limiting groove, the discharge port is fixed to the mixing head body. The sealing ring enhances the sealing between the discharge port and the mixing head body. Pushing the top of the limiting seat separates the limiting seat from the limiting post, thereby separating the discharge port from the mixing head body. This facilitates cleaning of the inner wall of the Teflon coating. The Teflon coating reduces material adhesion, making the device easy to clean and improving the applicability of the anti-clogging structure of the polyurethane foam machine mixing head.

[0019] By incorporating a heating structure, the heating chamber can be heated by a heating wire, thereby heating the material inside the Teflon coating. This prevents the material from prematurely solidifying inside the Teflon coating due to low temperatures, thus avoiding blockage. A temperature sensor monitors the temperature inside the Teflon coating in real time. When the temperature reaches a preset value, the temperature sensor controls the heating wire to stop working via a microcontroller, enabling the device to easily prevent blockage and improving the ease of use of the polyurethane foam machine's mixing head anti-blockage structure.

[0020] With the addition of a flushing structure and the flange, an external water pump can be easily connected. After the material is discharged, the check valve is opened, allowing the water inside the diverter seat to be discharged through the flushing pipe, thereby flushing away any residual material and preventing it from solidifying and clogging. This device facilitates the removal of residues and improves the comfort of using the polyurethane foam machine's mixing head anti-clogging structure. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0022] Figure 2 This is a three-dimensional structural schematic diagram of the main cross-section of this utility model;

[0023] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0024] Figure 4 This is a partial front view cross-sectional three-dimensional structural schematic diagram of the disassembly structure of this utility model;

[0025] Figure 5 This is a side view cross-sectional three-dimensional structural schematic diagram of the present invention.

[0026] The following are the annotations in the diagram: 1. Mixing head body; 2. Disassembly structure; 201. Discharge port; 202. Fixing frame; 203. Sealing ring; 204. Limiting seat; 205. Return spring; 206. Limiting groove; 207. Limiting post; 3. Heating structure; 301. Heating seat; 302. Heating chamber; 303. Temperature sensor; 304. Heating wire; 4. Flushing structure; 401. Diverter seat; 402. Flushing pipe; 403. Water inlet pipe; 5. Teflon coating. Detailed Implementation

[0027] The technical solutions of the present utility model 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 utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-5The polyurethane foaming machine mixing head anti-clogging structure provided by this utility model includes a mixing head body 1. A disassembly structure 2 is provided on the outer side of the bottom of the mixing head body 1. The disassembly structure 2 includes a discharge port 201 provided on the outer side of the bottom of the mixing head body 1. A fixing frame 202 is fixed on both sides of the discharge port 201. A limiting seat 204 is hinged inside the fixing frame 202. A sealing ring 203 is provided at the bottom of the discharge port 201. A limiting groove 206 is opened on one side of the top of the limiting seat 204. A limiting post 207 passes through the inside of the limiting groove 206. A return spring 205 is evenly fixed on both sides of the bottom of the limiting seat 204. The top of the sealing ring 203 is in contact with the bottom of the mixing head body 1. The end of the return spring 205 away from the limiting seat 204 is fixedly connected to the inner wall of the fixing frame 202. One end of the limiting post 207 is fixedly connected to the outer wall of the mixing head body 1.

[0029] Reference Figure 4 and Figure 5 As shown, the moving discharge port 201, under the squeezing action of the mixing head body 1, causes the limiting seat 204 to rotate inside the fixed frame 202. Under the elastic force of the return spring 205, the limiting seat 204 returns to its original position. At this time, the limiting post 207 moves into the limiting groove 206. Under the limiting action of the limiting post 207 and the limiting groove 206, the discharge port 201 and the mixing head body 1 are fixed together. Under the action of the sealing ring 203, the sealing between the discharge port 201 and the mixing head body 1 is enhanced. The top of the limiting seat 204 is pushed, causing the limiting seat 204 and the limiting post 207 to separate from each other, thereby separating the discharge port 201 from the mixing head body 1. This facilitates the cleaning of the inner wall of the Teflon coating 5. Under the action of the Teflon coating 5, the adhesion of materials can be reduced.

[0030] A heating structure 3 is provided on the outside of the mixing head body 1. The heating structure 3 includes a heating base 301, a heating cavity 302, a temperature sensor 303, and a heating wire 304. The heating base 301 is fixed to the outside of the mixing head body 1. The heating cavity 302 is provided inside the heating base 301. The heating wire 304 is fixed inside the heating cavity 302. The temperature sensor 303 passes through one side of the bottom of the mixing head body 1 below the heating base 301. The output end of the temperature sensor 303 is electrically connected to the input end of the heating wire 304 through a microcontroller. The inner side of the heating wire 304 is in contact with the outer side of the mixing head body 1.

[0031] Reference Figure 2 and Figure 5As shown, when connected to a power source, the heating wire 304 heats the interior of the heating chamber 302, thereby heating the material inside the Teflon coating 5 and preventing it from curing prematurely due to low temperature, thus avoiding blockage. The temperature sensor 303 monitors the temperature inside the Teflon coating 5 in real time. When the temperature reaches the preset value, the temperature sensor 303 controls the heating wire 304 to stop working via a microcontroller.

[0032] The inner wall of the mixing head body 1 is coated with Teflon coating 5. A flushing structure 4 is provided on the outer side of the top of the mixing head body 1. The flushing structure 4 includes a diverter seat 401, a flushing pipe 402 and an inlet pipe 403. The diverter seat 401 is fixed to the outer side of the top of the mixing head body 1. The flushing pipe 402 is uniformly fixed on the inner side of the diverter seat 401. The inlet pipe 403 is fixed on the outer side of the diverter seat 401. One end of the flushing pipe 402 is connected to the Teflon coating 5. A one-way valve is provided at one end of the flushing pipe 402. A flange is fixed on the outer side of one end of the inlet pipe 403.

[0033] Reference Figure 2 and Figure 3 As shown, by connecting an external water pump to the flange, after the material is discharged, the check valve is opened, allowing the water inside the diverter seat 401 to be discharged through the flushing pipe 402, thereby flushing away the residual material and preventing the material from solidifying and clogging.

[0034] Although the present invention 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 embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A polyurethane foam machine mixing head anti-clogging structure, including a mixing head body (1); Its features are: The mixing head body (1) has a disassembly structure (2) on the outer side of its bottom. The disassembly structure (2) includes a discharge port (201) on the outer side of the bottom of the mixing head body (1). Both sides of the discharge port (201) are fixed with a fixing frame (202). The inside of the fixing frame (202) is hinged with a limiting seat (204). The bottom of the discharge port (201) is provided with a sealing ring (203). One side of the top of the limiting seat (204) is provided with a limiting groove (206). The inside of the limiting groove (206) is provided with a limiting post (207). The bottom of the limiting seat (204) is uniformly fixed with a return spring (205). A heating structure (3) is provided on the outside of the mixing head body (1); The inner wall of the mixing head body (1) is provided with a Teflon coating (5), and the outer side of the top of the mixing head body (1) is provided with a rinsing structure (4).

2. The anti-clogging structure for the mixing head of a polyurethane foaming machine according to claim 1, characterized in that: The heating structure (3) includes a heating base (301), a heating cavity (302), a temperature sensor (303), and a heating wire (304). The heating base (301) is fixed to the outside of the mixing head body (1). The heating cavity (302) is provided inside the heating base (301). The heating wire (304) is fixed inside the heating cavity (302). The temperature sensor (303) passes through one side of the bottom of the mixing head body (1) below the heating base (301).

3. The anti-clogging structure for the mixing head of a polyurethane foaming machine according to claim 2, characterized in that: The output of the temperature sensor (303) is electrically connected to the input of the heating wire (304) via a microcontroller, and the inner side of the heating wire (304) is in contact with the outer side of the mixing head body (1).

4. The anti-clogging structure for the mixing head of a polyurethane foaming machine according to claim 1, characterized in that: The flushing structure (4) includes a diversion seat (401), a flushing pipe (402), and a water inlet pipe (403). The diversion seat (401) is fixed to the outer side of the top of the mixing head body (1). The flushing pipe (402) is uniformly fixed to the inner side of the diversion seat (401), and the water inlet pipe (403) is fixed to the outer side of the diversion seat (401).

5. The anti-clogging structure for the mixing head of a polyurethane foaming machine according to claim 4, characterized in that: One end of the flushing pipe (402) is connected to the Teflon coating (5), and a one-way valve is provided inside one end of the flushing pipe (402). A flange is fixed to the outside of one end of the water inlet pipe (403).

6. The anti-clogging structure for the mixing head of a polyurethane foaming machine according to claim 1, characterized in that: The top end of the sealing ring (203) is in contact with the bottom end of the mixing head body (1), and the end of the reset spring (205) away from the limiting seat (204) is fixedly connected to the inner wall of the fixing frame (202).

7. The anti-clogging structure for the mixing head of a polyurethane foaming machine according to claim 1, characterized in that: One end of the limiting post (207) is fixedly connected to the outer wall of the mixing head body (1).

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