CN202962719U - A Venturi powder pump with tangential powder feeding - Google Patents

Abstract

The utility model relates to a venturi powder pump of powder is advanced in tangential, it includes the powder pump body, this powder pump body has a powder input channel, the venturi tube, pump inner chamber and air current input channel, the afterbody of venturi tube is installed in pump inner chamber the inside, the afterbody of venturi tube is provided with air-powder mixture entry, the front end sets up air-powder mixture export, there is the nozzle at air-powder mixture entry positive rear, the mid-mounting of the back diapire of pump inner chamber, the end at air current input channel is installed to the nozzle, the powder delivery outlet that is located powder input channel tip sets up the lateral wall at pump inner chamber, a serial communication port: the inner cavity of the pump is of a circular section, and the powder feeding direction of the powder output port is tangent to the side wall of the inner cavity of the pump. The powder is sprayed to the inner cavity of the pump like a spiral line, the compressed air introduced by the nozzle provides negative pressure for the powder and has a stirring effect on the powder, so that the powder is better mixed, the abrasion of the powder to the pipe wall is small, the service life of parts is prolonged, and the work is efficient and reliable.

Description

A Venturi powder pump with tangential powder feeding

technical field

The utility model relates to a Venturi powder pump for tangentially feeding powder. the

Background technique

As shown in Figure 1, the existing powder conveying device using a Venturi powder pump includes: a powder bucket 1 with powder 2, a connecting pipeline 3, a powder pump 4 and a Venturi tube 5, the airflow input channel 41 of the powder pump 4 Compressed air is input into the air source input port 42, and the air flow output end of the air flow input channel 41 is equipped with a nozzle 43. The tube 5 has a gas-powder mixture inlet 51 and a gas-powder mixture outlet 52 at the front end, and the nozzle 43 blows compressed air into the venturi tube 5, so that the inner chamber 45 of the pump forms a negative pressure, forming a Venturi effect, and the inside of the powder bucket 1 The powder 2 flows into the pump cavity 45 through the connecting pipe 3 and the powder input channel 44, and the powder 2 is fully mixed with the gas and then enters the venturi tube 5, and the gas-powder mixture is output from the venturi tube 5. the

However, the structure of the Venturi powder pump currently in use has the following disadvantages: as shown in Figure 2 and Figure 3, the powder input channel 44 is located below the pump cavity 45, and the powder input port 47 and the powder input port 47 are respectively set at the two ends of the powder input channel 44. The output port 46, the powder feeding direction of the powder output port 46 is perpendicular to the air flow output by the nozzle 43, causing the powder 2 to be close to the tube wall in the venturi tube 5, the compressed air will be close to the center of the venturi tube 5, and the gas-powder mixing is uneven. The powder 2 wears quickly on the powder inner cavity 44 and the inner wall of the Venturi tube 5 . the

Contents of the invention

The purpose of the utility model is to provide a Venturi powder pump with tangential powder feeding, which can make the gas powder mix more evenly, reduce the abrasion of the inner cavity of the pump and the inner wall of the Venturi tube by the high-pressure air, prolong the service life, and work efficiently and reliably. the

The utility model is achieved through the following technical solutions:

A venturi powder pump with tangential powder feeding, which includes a powder pump body, the powder pump body has a powder input channel, a venturi tube, a pump inner cavity and an air flow input channel, and the tail of the venturi tube is installed in the pump inner cavity Inside, the tail of the Venturi tube is provided with a gas-powder mixture inlet, and the front end is provided with a gas-powder mixture outlet. A nozzle is installed directly behind the gas-powder mixture inlet and in the middle of the rear bottom wall of the pump cavity. At the end of the input channel, the powder output port located at the end of the powder input channel is arranged on the side wall of the pump cavity. The pump cavity has a circular cross section, and the powder feeding direction of the powder output port is tangent to the side wall of the pump cavity. the

The above-mentioned powder input channel is tangent to the side wall of the pump cavity. the

The above-mentioned powder input channel is a straight channel from bottom to top. the

There are multiple powder output ports described above, which are distributed at intervals along the axial direction of the inner chamber of the pump. the

Compared with the prior art, the utility model has the following advantages: 1. The inner cavity of the pump is a circular section, the powder feeding direction of the powder output port is tangent to the side wall of the inner cavity of the pump, and the powder is sprinkled to the pump in a helical shape. In the inner cavity, the compressed air introduced by the nozzle provides negative pressure to the powder and at the same time stirs the powder, so that the powder can be better mixed, and then it is transported out from the outlet of the air-powder mixture. The mixing ratio of the air-powder mixture in the pump body cavity and the Venturi tube is basically the same, and the phenomenon that the powder is on the outside and the airflow is on the center will not be formed. The powder has little wear on the tube wall, prolongs the service life of the parts, and works efficiently and reliably; 2 , The entire powder input channel is tangent to the side wall of the pump cavity, with simple structure and easy processing; 3) There are multiple powder output ports, which are distributed along the axial direction of the pump cavity, so that the mixing ratio of the gas-powder mixture can be adjusted . the

Description of drawings

Fig. 1 is a schematic structural diagram of a conventional powder conveying device using a Venturi powder pump. the

Fig. 2 is the cross-sectional view of the existing Venturi powder pump at the section where the powder input channel is located;

Fig. 3 is the sectional view of the section where the existing Venturi powder pump is located in the output direction of the gas-powder mixture;

Fig. 4 is the cross-sectional view of the powder pump of the invention at the section where the powder input channel is located;

Fig. 5 is the cross-sectional view of the section where the powder pump of the invention is located in the output direction of the gas-powder mixture;

Fig. 6 is a cross-sectional view of the inventive powder pump with multiple powder output ports. the

Detailed ways

As shown in Fig. 4, Fig. 5, a kind of Venturi powder pump of tangential powder feeding, it comprises powder pump body 4, and this powder pump body 4 has a powder input channel 44, Venturi tube 5, pump cavity 45 and The airflow input channel 41, the tail of the venturi tube 5 is installed in the pump inner cavity 45, the tail of the venturi tube 5 is provided with a gas-powder mixture inlet 51, and the front end is provided with a gas-powder mixture outlet 52, and the gas-powder mixture inlet 51 Nozzle 43 is installed in the middle of the rear bottom wall 450 of the pump inner chamber 45. The nozzle 43 is installed at the end of the airflow input channel 41. The two ends of the powder input channel 44 are respectively provided with a powder input port 47 and a powder output port 46. The powder output port 46 located at the end of the powder input channel 44 is arranged on the side wall of the pump cavity 45 , the pump cavity 45 is a circular section, and the powder feeding direction of the powder output port 46 is tangent to the side wall of the pump cavity 45 . The powder input channel 44 can be tangent to the side wall of the pump cavity, which is convenient for processing and simple in structure. The powder input channel 44 is a straight channel from bottom to top. the

As shown in Figure 6, there are multiple powder outlets, which are distributed at intervals along the axial direction of the pump inner cavity. the

The working principle of the present utility model is: the pump cavity 45 is a circular cross-section, a nozzle 43 is installed in the middle of the rear bottom wall 450 of the pump cavity 45 directly behind the gas-powder mixture inlet 51, and the delivery port of the powder output port 46 The powder direction is tangent to the side wall of the pump cavity 45, the compressed air output by the nozzle 43, the powder is sprinkled to the pump cavity 45 in a helical shape, and the compressed air introduced by the nozzle 43 provides negative pressure for the powder and at the same time There is a stirring effect, so that the powder can be mixed better, and the phenomenon that the powder is on the outside and the airflow is on the center will not be formed. The powder has little wear on the tube wall, prolongs the service life of the parts, and works efficiently and reliably. the

Claims (4)

1. venturi powder pump that tangentially advances powder, it comprises the powder pump housing, this powder pump housing has a powder input channel, Venturi tube, pump inner chamber and air-flow input channel, the afterbody of Venturi tube is arranged on inside the pump inner chamber, the afterbody of Venturi tube is provided with gas powder mixture entrance, front end arranges the outlet of gas powder mixture, dead astern at gas powder mixture entrance, the middle part of the rear diapire of pump inner chamber is equipped with nozzle, nozzle is arranged on the end of air-flow input channel, the powder delivery outlet that is positioned at powder input channel end is arranged on the sidewall of pump inner chamber, it is characterized in that: the pump inner chamber is circular cross-section, the powder feeding direction of powder delivery outlet and the sidewall of pump inner chamber are tangent.

2. a kind of venturi powder pump that tangentially advances powder according to claim 1, it is characterized in that: the sidewall of powder input channel and pump inner chamber is tangent.

3. described a kind of venturi powder pump that tangentially advances powder according to claim 1 and 2, it is characterized in that: the powder input channel is vertical bar shaped passage from lower to upper.

4. described a kind of venturi powder pump that tangentially advances powder according to claim 1 and 2, it is characterized in that: the powder delivery outlet has a plurality of, along the pump lumen shaft to spaced apart.

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