CN201321575Y - Vacuum generator and thread trimmer using same - Google Patents

Abstract

The utility model provides a vacuum generator, is including the casing that has airflow channel, the casing lateral wall is equipped with high-pressure gas source air inlet, and the casing inner wall is equipped with high-pressure gas source gas outlet, forms high-pressure gas source channel between this air inlet and the gas outlet, and high-pressure gas source channel communicates with each other with casing airflow channel, and high-pressure gas gets into and discharges from the gas outlet from the air inlet to make among the casing airflow channel with the one end that the gas outlet opposite direction formed negative pressure state, simple structure, it is convenient and can reduce cost to make. The utility model provides an use vacuum generator's trimming machine, includes shell, blade subassembly and arranges the motor in the shell in, the shell the inside sets up the negative pressure passageway that induced drafts, and the negative pressure induced drafts the one end of passageway and communicates the shearing port of blade subassembly, the negative pressure induced drafts the other end of passageway and is connected with vacuum generator's negative pressure end, and this trimming machine simple structure is compact, can produce powerful suction.

Description

A vacuum generator and a thread trimmer using the vacuum generator

Technical field:

The utility model relates to a vacuum generator and a thread trimmer using the vacuum generator.

Background technique:

The thread trimmer generally includes a casing, a blade assembly and a motor placed in the casing. A negative pressure suction channel is provided inside the casing. One end of the negative pressure suction channel is connected to the cutting port of the blade assembly, and the other end is connected to the suction motor. In order to realize that the thread ends are sucked and discharged from the negative pressure suction channel while cutting the remaining thread ends of the clothes. The structure is complicated, the noise is loud, relatively bulky, and the suction is not strong, resulting in poor shearing effect.

Existing vacuum generators generally rely on the rotation of the impeller or fan installed inside the vacuum generator to discharge the air inside the vacuum generator to form a vacuum to generate a suction force. The structure is complex, difficult to manufacture, and costly. Expensive, prone to failure, requires frequent cleaning, so it is rarely used on thread trimmers.

Invention content:

The purpose of the utility model is to provide a vacuum generator with simple structure, convenient manufacture and low cost.

Another object of the utility model is to provide a thread trimmer with simple and compact structure and strong suction.

A vacuum generator, comprising a housing with an airflow channel, characterized in that: the outer wall of the housing is provided with a high-pressure air source inlet, and the inner wall of the housing is provided with a high-pressure air source outlet, the inlet and A high-pressure gas source channel is formed between the gas outlets, and the high-pressure gas source channel communicates with the air flow channel of the housing. Create a negative pressure state.

In the vacuum generator of the present utility model, a high-pressure gas source outlet and an inlet are respectively provided on the inner and outer walls of the shell with the air flow channel, and the high-pressure gas enters from the air inlet and is discharged from the air outlet, so that the air flow channel of the shell The end opposite to the air outlet forms a negative pressure state to generate suction force, the structure is simple, the manufacture is convenient and the cost can be reduced.

The diameter of the air inlet is larger than the diameter of the air outlet, so that the high-pressure air source enters from the large-diameter air inlet and then is discharged at a high speed after secondary pressurization through the small-diameter air outlet, which greatly enhances the vacuum suction force.

The high-pressure air source channel is in the shape of "V" or "U", and the direction of intake of high-pressure air source is opposite to the direction of discharge, so that during the process of reversing the high-pressure air flow, a reverse impact force is generated at the outlet of the air source, The discharge speed of the high-pressure air source is further accelerated, resulting in a stronger suction force.

The outer wall of the housing is provided with a mounting and locating member. The mounting and locating member is in the shape of a circular tube, and the tubular side wall is provided with a threaded hole, which is convenient for installation and positioning.

A thread trimmer using the above-mentioned vacuum generator, including a housing, a blade assembly and a motor placed in the housing, a negative pressure suction channel is arranged inside the housing, and one end of the negative pressure suction channel is connected to the cutting blade of the blade assembly. The port is characterized in that: the other end of the negative pressure suction channel is connected to the negative pressure end of the vacuum generator.

The thread trimmer of the utility model has a simple and compact structure and can generate strong suction force. When cutting the remaining thread ends of clothes, the thread ends can be immediately sucked and discharged from the negative pressure suction channel. The cutting effect is good, and frequent cleaning is not required.

Description of drawings:

Fig. 1 is the perspective view of the vacuum generator of the present utility model;

Fig. 2 is the schematic sectional view of the vacuum generator of the present utility model;

Fig. 3 is a structural schematic diagram of the thread trimmer of the present invention.

Detailed ways:

As shown in Figures 1 to 2: a vacuum generator, including a housing 1 with an airflow channel 4, the outer wall of the housing 1 is provided with a high-pressure air source inlet 2, and the inner wall of the housing 1 is provided with a high-pressure The air source outlet 3, the diameter of the air inlet 2 is larger than the diameter of the air outlet 3, a high-pressure air source channel is formed between the air inlet 2 and the air outlet 3, and the high-pressure air source channel is in the shape of a "V". The gas source passage communicates with the airflow passage 4 of the housing 1, and the high-pressure gas enters from the air inlet 2 and is discharged from the air outlet 3, so that the end of the airflow passage 4 of the housing 1 opposite to the air outlet 3 forms a negative pressure state . The structure is simple, the manufacture is convenient and the cost can be reduced. The outer wall of the housing 1 is also provided with a mounting and positioning member 5, which is in the shape of a round tube, and its tubular side wall is provided with a threaded hole 6, which is convenient for installation and positioning.

As shown in Figure 3: a thread trimmer using the above-mentioned vacuum generator, including a casing 7, a blade assembly 8 and a motor 9 placed in the casing 7, a negative pressure suction channel is arranged inside the casing 7, and the negative pressure suction One end of the air channel is connected to the shear port of the blade assembly 8, and the other end of the negative pressure suction channel is connected to the negative pressure end of the vacuum generator. When the thread trimmer is working, the high-pressure air source enters from the air inlet 2 on the outer wall of the shell 1 of the vacuum generator, and is discharged from the high-pressure air source outlet 3 on the inner wall of the shell 1, so that the vacuum generator The end of the airflow channel 4 of the casing 1 opposite to the air outlet 3 forms a negative pressure state, which makes the cutting end of the thread trimmer generate a strong suction force, and can immediately remove the thread from the negative while cutting the residual thread of the clothes. The pressure-suction channel sucks in and discharges away, the structure is simple and compact, the shearing efficiency is good, and it does not need to be cleaned frequently.

Claims (8)

1, a kind of vacuum generator, comprise housing with gas channel, it is characterized in that: described hull outside wall is provided with the high-pressure air source air inlet, the housing madial wall is provided with the high-pressure air source gas outlet, form the high-pressure air source passage between this air inlet and the gas outlet, the high-pressure air source passage communicates with the housing gas channel, and gases at high pressure enter and discharge from the gas outlet from air inlet, thereby makes an end opposite with described gas outlet direction in the housing gas channel form negative pressure state.

2, a kind of vacuum generator according to claim 1, it is characterized in that: the diameter of described air inlet is greater than the diameter of gas outlet.

3, a kind of vacuum generator according to claim 1 and 2 is characterized in that: the V-shaped shape of described high-pressure air source passage or " U " shape.

4, a kind of vacuum generator according to claim 3 is characterized in that: the lateral wall of described housing is provided with one keeper is installed, and it is cylindrical that this installs keeper, and its tubular sidewall is provided with screwed hole.

5, a kind of application rights requires the trimming machine of 1 described vacuum generator, comprise shell, blade assembly and place the interior motor of shell, housings is provided with the negative pressure air-suction channel, one end of negative pressure air-suction channel is communicated to the shearing port of blade assembly, it is characterized in that: the other end of negative pressure air-suction channel is connected with the negative pressure end of described vacuum generator.

6, trimming machine according to claim 5, it is characterized in that: the diameter of described air inlet is greater than the diameter of gas outlet.

7, according to claim 5 or 6 described trimming machines, it is characterized in that: the V-shaped shape of described high-pressure air source passage or " U " shape.

8, trimming machine according to claim 7 is characterized in that: the lateral wall of the housing of described vacuum generator is provided with one keeper is installed, and it is cylindrical that this installs keeper, and its tubular sidewall is provided with screwed hole.

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