Suction nozzle structure

Abstract

The utility model discloses a suction nozzle structure which comprises a shell, an upper sealing cover and a side sealing cover, the upper sealing cover is installed at the upper end of the shell, the side sealing cover is installed on one side of the shell, an extension part is arranged on the side, facing the shell, of the side sealing cover, a circular groove is formed in the extension part, and an air inlet is formed in the position, corresponding to the circular groove, of one side of the upper sealing cover. And a hollow inner core is arranged in the inner cavity of the shell corresponding to the air inlet. According to the utility model, external air is pressurized and then injected into the inner cavity of the shell through the air inlet, the air injected into the inner cavity of the shell flows into the circular groove through the annular airflow channel under the guidance of the inner core and then flows out through the airflow outflow channel, and the air in the inner cavity of the shell is driven to flow in the flowing process of the injected air, so that the air in the inner cavity of the shell is driven to flow; air in the inner cavity of the shell flows into the circular groove through the inner cavity of the inner core and flows out through the airflow outflow channel, so that negative pressure is formed in the inner cavity of the shell, and yarn is sucked into the inner cavity of the shell through the suction opening.

Description

Technical Field

[0001] The utility model relates to the technical field of suction nozzles, and more specifically, to a suction nozzle structure. Background Art

[0002] The negative pressure suction nozzle is a very common component in textile machinery. The suction nozzle is connected to a vacuum pump through a pipeline. During operation, the gas in the inner cavity of the suction nozzle is pumped out by the vacuum pump, so that a negative pressure is formed in the inner cavity of the suction nozzle, thereby sucking the yarn into the inner cavity of the suction nozzle.

[0003] The structures of some existing suction nozzles are relatively complex and not easy to process, resulting in higher costs. Therefore, the structure of the suction nozzle needs to be further optimized. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies of the existing technology and provide a suction nozzle structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A suction nozzle structure includes a housing, an upper cover and a side cover. The upper cover is installed at the upper end of the housing, and the side cover is installed on one side of the housing and abuts against one side of the upper cover. An extension portion is provided on the side of the side cover facing the housing. The extension portion extends into the inner cavity on one side of the housing, and its outer side wall abuts against the inner walls of the upper cover and the housing. A circular groove is provided in the extension portion. An air inlet is provided at a position corresponding to the circular groove on one side of the upper cover. The air inlet is communicated with the inner cavity of the housing. A hollow inner core is installed at a position corresponding to the air inlet in the inner cavity of the housing. One end of the inner core extends into the circular groove. An annular air flow channel is formed between the outer side wall of one end of the inner core and the groove wall of the circular groove. An inclined air flow outlet channel communicated with the circular groove is provided at the lower end of the side cover. A suction port communicated with the inner cavity of the housing is provided at the lower end of the other side of the housing.

[0007] Furthermore, the inner core has a structure with a wide opening at one end and a narrow opening at the other end. The wide opening end of the inner core is installed on the side of the air inlet facing away from the circular groove. The narrow opening end of the inner core corresponds to the air inlet and extends into the circular groove. The air flowing into the inner cavity of the housing from the air inlet flows along the annular air flow channel to the circular groove and then flows out through the air flow outlet channel.

[0008] Furthermore, the inner wall of the wide opening end of the inner core is an inclined annular surface.

[0009] Furthermore, the suction port is strip-shaped.

[0010] The beneficial effects of the utility model are:

[0011] 1. The nozzle structure of the present utility model has few components, is easy to process, and has a low cost. It is not only applicable to yarn suction, but also applicable to uses such as dust suction, with a wide range of applications.

[0012] 2. In the present utility model, air flow is injected into the air inlet. The air flow flows into the inner cavity of the housing through the air inlet. Under the guidance of the inner core, the air flow injected into the inner cavity of the housing flows into the circular groove through the annular air flow channel, and then flows outwards through the air flow outlet channel. During the flow of the injected air flow, it will drive the air flow in the inner cavity of the housing, so that the air in the inner cavity of the housing flows into the circular groove through the inner cavity of the inner core and flows outwards through the air flow outlet channel, thereby forming a negative pressure in the inner cavity of the housing, and sucking the yarn into the inner cavity of the housing through the suction port. Description of the Drawings

[0013] Figure 1 is a top view structural schematic diagram of the nozzle structure in this embodiment;

[0014] Figure 2 is a cross-sectional structural schematic diagram of the nozzle structure in this embodiment.

[0015] Reference Numerals: housing 1, suction port 101, upper cover 2, air inlet 201, side cover 3, extension part 301, circular groove 302, air flow outlet channel 303, inner core 4, wide end 401, narrow end 402, annular air flow channel 5. Detailed Description of the Embodiment

[0016] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0017] Embodiment: A nozzle structure, as Figure 1 - Figure 2 shown, includes a housing 1, an upper cover 2 and a side cover 3. Among them, the housing 1 has a Z-shaped structure and has a receiving cavity. Its upper end and one side are open. The upper cover 2 has a Z-shaped structure and is adapted to the upper open end of the housing 1. It is installed at the upper end of the housing 1 to seal the upper end of the housing 1. The side cover 3 is installed on one side of the housing 1 and abuts against one side of the upper cover 2 to seal the open end on one side of the housing 1.

[0018] One side of the side cover 3 facing the housing 1 is provided with an extension 301. The extension 301 extends into the inner cavity on one side of the housing 1, and its outer sidewall abuts against the inner wall of the upper cover 2 and the housing 1. A circular groove 302 is formed in the extension 301; an air inlet 201 is formed in one side of the upper cover 2 corresponding to the position of the circular groove 302. The air inlet 201 is communicated with the inner cavity of the housing 1; during use, air flow is injected into the air inlet 201, and the air flow flows into the inner cavity of the housing 1 through the air inlet 201.

[0019] A hollow inner core 4 is installed in the inner cavity of the housing 1 corresponding to the position of the air inlet 201, that is, the inner core 4 is directly opposite to the air inlet 201 and is located below the air inlet 201. One end of the inner core 4 extends into the circular groove 302, so that an annular air flow channel 5 is formed between the outer sidewall of one end of the inner core 4 and the groove wall of the circular groove 302, that is, there is a gap between the outer sidewall of one end of the inner core 4 and the groove wall of the circular groove 302. The air flowing into the inner cavity of the housing 1 from the air inlet 201 can flow into the circular groove 302 through this gap.

[0020] An inclined air flow outlet channel 303 communicating with the circular groove 302 is formed at the lower end of the side cover 3. The caliber of the air flow outlet channel 303 is smaller than the caliber of the circular groove 302. The air flow flowing into the circular groove 302 can flow outwards through the air flow outlet channel 303.

[0021] A suction port 101 communicating with the inner cavity of the housing 1 is formed at the lower end of the other side of the housing 1. The suction port 101 is strip-shaped and is arranged along the width direction of the other side of the housing 1.

[0022] During use, air flow is injected into the air inlet 201. The air flow flows into the inner cavity of the housing 1 through the air inlet 201. Under the guidance of the inner core 4, the air flow flowing into the inner cavity of the housing 1 flows into the circular groove 302 through the annular air flow channel 5, and then flows outwards through the air flow outlet channel 303. During the flow of the injected air flow, it will drive the air flow in the inner cavity of the housing 1, so that the air in the inner cavity of the housing 1 flows into the circular groove 302 through the inner cavity of the inner core 4 and flows outwards through the air flow outlet channel 303, thereby forming a negative pressure in the inner cavity of the housing 1, and sucking the yarn into the inner cavity of the housing 1 through the suction port 101.

[0023] According to the air pressure principle, when the flow rate of the air flow injected into the air inlet 201 is larger, the air pressure in the inner cavity of the housing 1 is smaller. Since the pressure in the entire inner cavity of the housing 1 is less than the atmospheric pressure, the outside air flows into the inner cavity of the housing 1 through the suction port 101. With the flow of the outside air, the yarn can be sucked into the inner cavity of the housing 1.

[0024] By extending one end of the inner core 4 into the circular groove 302, an annular air flow channel 5 is formed between the outer side wall of one end of the inner core 4 and the groove wall of the circular groove 302. By using the annular air flow channel 5, the air flow in the inner cavity of the housing 1 can form an annular air flow after passing through the annular air flow channel 5, with increased flow velocity and enhanced suction force, thereby making the negative pressure effect in the inner cavity of the housing 1 more pronounced.

[0025] By setting the suction port 101 to be strip-shaped and arranging it along the width direction of the other side of the housing 1, the suction area is increased.

[0026] Furthermore, the inner core 4 has a structure with a wide mouth at one end and a narrow mouth at the other end, that is, the pipe diameter of the wide mouth end 401 of the inner core 4 is larger than that of the narrow mouth end 402. The wide mouth end 401 of the inner core 4 is a hollow tubular structure. The wide mouth end 401 of the inner core 4 is installed on the side of the air inlet 201 facing away from the circular groove 302, blocking the air flow injected into the inner cavity of the housing 1 through the air inlet 201 so that it cannot directly flow to the suction port 101. The narrow mouth end 402 of the inner core 4 is a hollow tubular structure. The narrow mouth end 402 of the inner core 4 corresponds to the air inlet 201 and extends into the circular groove 302, guiding the air flow injected into the inner cavity of the housing 1 through the air inlet 201 into the circular groove 302 and flowing out through the air flow outlet channel 303.

[0027] Preferably, the inner wall of the wide mouth end 401 of the inner core 4 is an inclined annular surface, that is, the inner cavity of the wide mouth end 401 of the inner core 4 is frustum-shaped, with the inner diameter on the side facing the narrow mouth end 402 of the inner core 4 being smaller than the inner diameter on the side facing away from the narrow mouth end 402 of the inner core 4. By using this inclined annular surface, on the one hand, it plays a guiding role to facilitate the passage of air in the inner cavity of the housing 1, and on the other hand, it increases the flow velocity of the air in the inner cavity of the housing 1 by changing the diameter to facilitate the inhalation of the yarn.

[0028] The above description is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A nozzle structure, comprising a housing (1), an upper cover (2) and a side cover (3), characterized in that: The upper cover (2) is mounted on the upper end of the shell (1), the side cover (3) is mounted on one side of the shell (1) and is in contact with one side of the upper cover (2), the side cover (3) is provided with an extension portion (301) on the side facing the shell (1), the extension portion (301) extends into the inner cavity of one side of the shell (1), and its outer side wall is in contact with the inner wall of the upper cover (2) and the shell (1), the extension portion (301) is provided with a circular groove (302), and an air inlet (201) is provided on one side of the upper cover (2) at a position corresponding to the circular groove (302), the air inlet The port (201) is connected to the inner cavity of the shell (1); a hollow inner core (4) is installed in the inner cavity of the shell (1) at a position corresponding to the air inlet port (201); one end of the inner core (4) extends into the circular groove (302); an annular air flow channel (5) is formed between the outer wall of one end of the inner core (4) and the groove wall of the circular groove (302); the lower end of the side cover (3) is provided with an inclined air flow outflow channel (303) connected to the circular groove (302); and the lower end of the other side of the shell (1) is provided with a suction port (101) connected to the inner cavity of the shell (1).

2. A nozzle structure according to claim 1, characterized in that: The inner core (4) is a structure with a wide opening at one end and a narrow opening at the other end. The wide opening end (401) of the inner core (4) is installed on the side of the air inlet (201) facing away from the circular groove (302). The narrow opening end (402) of the inner core (4) corresponds to the air inlet (201) and extends into the circular groove (302). The air flowing from the air inlet (201) into the inner cavity of the shell (1) flows along the annular air flow channel (5) into the circular groove (302) and flows out through the air flow outflow channel (303).

3. A nozzle structure according to claim 2, characterized in that: The inner wall of the wide end (401) of the inner core (4) is an inclined annular surface.

4. A nozzle structure according to claim 1, characterized in that: The suction port (101) is in the shape of an elongated strip.

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