Pressure starting nozzle structure for cooling plastic particles

Abstract

The utility model relates to the technical field of nozzles, in particular to a pressure starting nozzle structure for cooling plastic particles, which comprises an outer shell, a pressing film, a pricking needle and a communication channel, the outer shell is provided with a liquid inlet and a liquid outlet, the liquid inlet and the liquid outlet are respectively communicated with different cavities, and the liquid inlet and the liquid outlet are communicated with the communication channel. The pressing film is arranged between the cavity communicated with the liquid inlet and the cavity communicated with the liquid outlet, the pricking needle is connected to an inner cavity of the outer shell in a sliding mode and can pierce the pressing film in a sliding mode, the communicating channel is arranged in the outer shell, one end of the communicating channel is communicated with the liquid inlet, and the other end of the communicating channel is communicated with the cavity below the pricking needle. The pressure starting nozzle structure for cooling the plastic particles, disclosed by the utility model, can be opened under certain pressure, so that the spraying shape of the nozzle is ensured.

Description

Technical Field

[0001] The utility model relates to a nozzle mechanism, in particular to a pressure-activated nozzle structure used for cooling plastic particles. Background Art

[0002] When the pressure of the liquid in the nozzle is insufficient, a perfect spraying shape cannot be formed, which usually occurs when the equipment is just started. The above situation should be effectively avoided, especially when spraying paint. The Chinese utility model with the nozzle publication number CN204466693U discloses a garden spray gun with a logarithmic spiral nozzle with equal pressure angle. By improving the nozzle structure itself, it is ensured that a perfect spraying shape can be formed even when the liquid pressure is insufficient. However, the structure of this nozzle is too delicate and the cost is too high, which is not suitable for use in ordinary equipment.

[0003] Based on this, it is necessary to improve the existing nozzle structure so that the requirements for the starting pressure can be increased while ensuring low manufacturing costs and ensuring the spraying shape of the nozzle. Utility Model Content

[0004] Technical purpose: In order to overcome the deficiencies in the prior art, the utility model provides a pressure-activated nozzle structure for cooling plastic particles, which is used to control the starting pressure of the nozzle.

[0005] Technical solution: To achieve the above purpose, the utility model discloses a pressure-activated nozzle structure for cooling plastic particles, comprising:

[0006] An outer shell, wherein the outer shell is provided with a liquid inlet and a liquid outlet, wherein the liquid inlet and the liquid outlet are respectively connected to different chambers;

[0007] A pressing film, wherein the pressing film is arranged between a chamber connected to the liquid inlet and a chamber connected to the liquid outlet;

[0008] A puncture needle, which is slidably connected to the inner cavity of the outer shell and can puncture the pressed film by sliding;

[0009] A communication channel is arranged in the outer shell, one end of the communication channel is communicated with the liquid inlet, and the other end of the communication channel is communicated with the chamber below the puncture needle.

[0010] Preferably, the pricking needle is arranged below the pressing film, and a supporting spring is arranged below the pricking needle, and under the action of the supporting spring, the pricking needle has a tendency to move toward the pressing film side; the pricking needle sleeve is provided with a restraining spring, and under the action of the restraining spring, the pricking needle has a tendency to move away from the pressing film side.

[0011] Furthermore, a sealing ring is provided on the puncture needle.

[0012] Furthermore, the pressing film is fixed by a clamping assembly, which includes an upper top screw, an upper gasket and a lower gasket. The pressing film is arranged between the upper gasket and the lower gasket. The upper top screw is fixedly connected to the outer shell, and the upper top screw clamps and fixes the upper gasket and the lower gasket.

[0013] Furthermore, it also includes a lower top screw, which is arranged below the support spring and is screwed and fixed to the outer shell.

[0014] The pressure-activated nozzle structure for cooling plastic particles disclosed in the utility model has the following beneficial effects:

[0015] In the device, a pressure film is provided in the inner cavity of the outer shell for separating the liquid inlet and the liquid outlet. When the pressure at the liquid inlet is insufficient, the needle cannot move upward to puncture the pressure film. At this time, the liquid inlet and the liquid outlet are separated from each other, and the liquid outlet cannot spray water. When the pressure at the liquid inlet is large enough, the needle moves upward to puncture the pressure film to complete the water spraying function. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a structural sectional view of the utility model.

[0018] In the figure, 1, outer shell; 2, liquid inlet; 3, liquid outlet; 4, film pressing; 5, puncture needle; 6, connecting channel; 7, supporting spring; 8, restraining spring; 9, upper push screw; 10, upper gasket; 11, lower gasket; 12, lower push screw; 13, flange; 14, sealing ring. DETAILED DESCRIPTION

[0019] The following is combined with Figure 1 To Attachment Figure 2 The principles and features of the present invention are described, and the examples given are only used to explain the present invention, and are not used to limit the scope of the present invention.

[0020] A pressure-activated nozzle structure for cooling plastic particles comprises an outer shell 1, a film pressing 4, a pricking needle 5, a communication channel 6, a pressing component and a lower ejector screw 12.

[0021] The outer shell 1 is cylindrical and has a cavity inside. The outer shell 1 is provided with a liquid inlet 2 and a liquid outlet 3. Figure 2, with the X direction as the upper direction, the liquid inlet 2 and the liquid outlet 3 should be staggered with each other in the axial direction of the outer shell 1, wherein the liquid inlet 2 is arranged above the liquid outlet 3, the liquid inlet 2 is connected to the water source through a pipeline, and the liquid outlet 3 is connected to the nozzle. The compression film 4 is arranged in the cavity of the outer shell 1, and the compression film 4 divides the outer shell 1 into two chambers, wherein the liquid inlet 2 is connected to the upper chamber, and the liquid outlet 3 is connected to the lower chamber, that is, the compression film 4 is arranged between the chamber connected to the liquid inlet 2 and the chamber connected to the liquid outlet 3. The compression film 4 is fixed by a clamping assembly, and the clamping assembly includes an upper top screw 9, an upper gasket 10 and a lower gasket 11, and the compression film 4 is arranged between the upper gasket 10 and the lower gasket 11. The upper top screw 9 is fixedly connected to the outer shell 1, specifically, the upper top screw 9 is screwed into the inner cavity above the outer shell 1. The upper gasket 10 and the lower gasket 11 are made of rubber, and the pressing film 4 is a thin aluminum sheet. The upper top screw 9 presses the upper gasket 10, the pressing film 4 and the lower gasket 11 tightly. When the pressing film 4 is not broken, the liquid inlet 2 and the liquid outlet 3 will not be connected; when the pressing film 4 is broken, the liquid inlet 2 and the liquid outlet 3 are connected to each other. The piercing needle 5 is slidably connected to the inner cavity of the outer shell 1, and the piercing needle 5 can slide upward to pierce the pressing film 4. The piercing needle 5 is arranged below the pressing film 4, and the piercing needle 5 is relatively fixed by a supporting spring 7 and a restricting spring 8, wherein the supporting spring 7 is arranged below the piercing needle 5, and the restricting spring 8 is arranged around the piercing needle 5. The piercing needle 5 is provided with a flange 13 for receiving the restricting spring 8. Under the action of the restricting spring 8, the piercing needle 5 has a tendency to move away from the pressing film 4; under the action of the supporting spring 7, the piercing needle 5 has a tendency to move toward the pressing film 4. The lower push screw 12 is arranged below the support spring 7 and is screwed and fixed to the outer shell 1. The spring force of the support spring 7 can be adjusted by adjusting the lower push screw 12. A connecting channel 6 is arranged in the outer shell 1. One end of the connecting channel 6 is connected to the liquid inlet 2, and the other end of the connecting channel 6 is connected to the chamber below the puncture needle. A sealing ring 14 is arranged on the puncture needle 5.

[0022] Under the action of the connecting channel 6, the pressure in the chamber below the liquid inlet 2 and the puncture needle 5 is the same. When the pressure at the liquid inlet 2 combined with the support spring 7 is not enough to overcome the elastic force of the restricting spring 8, the puncture needle 5 will stay in the original position and will not break the pressing film 4. At this time, the liquid inlet 2 and the liquid outlet 3 will not be connected. When the pressure of the liquid at the liquid inlet 2 becomes larger and the support spring 7 can overcome the elastic force of the restricting spring 8, the puncture needle 5 can puncture the pressing film 4, and the liquid inlet 2 and the liquid outlet 3 are connected to each other, so that the spraying function can be realized.

[0023] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure-activated nozzle structure for cooling plastic particles, characterized in that: include: An outer shell (1), the outer shell (1) being provided with a liquid inlet (2) and a liquid outlet (3), the liquid inlet (2) and the liquid outlet (3) being respectively connected to different chambers; A pressing film (4), wherein the pressing film (4) is arranged between a chamber connected to the liquid inlet (2) and a chamber connected to the liquid outlet (3); A puncture needle (5), wherein the puncture needle (5) is slidably connected to the inner cavity of the outer shell (1), and can puncture the pressed film (4) by sliding; A communication channel (6), wherein the communication channel (6) is arranged in the outer shell (1), one end of the communication channel (6) is connected to the liquid inlet (2), and the other end of the communication channel (6) is connected to the chamber below the puncture needle (5).

2. The pressure-activated nozzle structure for cooling plastic particles according to claim 1, characterized in that: The piercing needle (5) is arranged below the pressing film (4), and a supporting spring (7) is arranged below the piercing needle (5). Under the action of the supporting spring (7), the piercing needle (5) has a tendency to move toward the side of the pressing film (4); the piercing needle (5) is sleeved with a restraining spring (8), and under the action of the restraining spring (8), the piercing needle (5) has a tendency to move away from the side of the pressing film (4).

3. The pressure-activated nozzle structure for cooling plastic particles according to claim 2, characterized in that: The puncture needle (5) is provided with a sealing ring (14).

4. The pressure-activated nozzle structure for cooling plastic particles according to claim 3, characterized in that: The pressing film (4) is fixed by a clamping assembly, which comprises an upper push screw (9), an upper gasket (10) and a lower gasket (11); the pressing film (4) is arranged between the upper gasket (10) and the lower gasket (11); the upper push screw (9) is fixedly connected to the outer shell (1); and the upper push screw (9) clamps and fixes the upper gasket (10) and the lower gasket (11).

5. The pressure-activated nozzle structure for cooling plastic particles according to claim 4, characterized in that: It also comprises a lower top screw (12), which is arranged below the support spring (7) and is screwed and fixed to the outer shell (1).

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