Powder suction machine

Abstract

The utility model relates to the technical field of suction machines, and discloses a powder suction machine which comprises a shell, a metering assembly is installed in the shell and comprises a supporting plate and two brackets installed on the supporting plate, a plurality of pressure sensors are arranged between the supporting plate and the brackets, a stock bin is installed on the two brackets, and the pressure sensors are installed on the stock bin. A feeding switching assembly is installed on the side face of the shell. The feeding switching assembly comprises a first feeding three-way valve communicating with the two stock bins. The weight of powder in the stock bin is monitored through the metering assembly, automatic switching between the feeding state and the discharging state is achieved, the air pressure in the stock bin is controlled in cooperation with the pressure adjusting assembly so as to control the feeding direction and the discharging direction of the powder, continuous material suction and feeding are achieved alternately, the filter screen is subjected to the back flushing function during positive pressure discharging, the filter screen is prevented from being blocked, and the working efficiency is improved. The device has the advantages of high production efficiency, low operation difficulty and low maintenance cost.

Description

Technical Field

[0001] The present application relates to the technical field of suction machines, and in particular to a powder suction machine. Background Art

[0002] A powder suction machine is a device used for automatic suction, which can suck powder or fine particles from a container and transport it to other equipment. In the prior art, a powder suction machine usually uses a negative pressure pump or a negative pressure fan to evacuate the suction bin, so that a negative pressure is formed in the suction pipe connected to the suction bin, and the powder or fine particles are sucked into the suction bin through the suction pipe. After the powder enters the suction bin, it will be temporarily stored here. When the powder needs to be transported, the powder can be discharged from the suction bin and transported to other equipment through a pipeline.

[0003] However, since the discharge valve of the suction bin is in a closed state during the suction process of the powder suction machine, the discharge valve is opened to discharge the powder only after the suction is completed, making it impossible for the powder suction machine to continuously suck and transport the material, affecting work efficiency.

[0004] The above information disclosed in the background technology is only used to increase the understanding of the background technology of the present application, and therefore, it may include information that does not constitute the prior art known to ordinary technicians in the field. Utility Model Content

[0005] In order to solve the problem that a powder suction machine needs to close the discharge valve when sucking materials, cannot discharge materials, and affects the continuous suction and transportation efficiency, the present application provides a powder suction machine.

[0006] The powder suction machine provided in this application adopts the following technical solution:

[0007] A powder suction machine, comprising a housing, a metering component, a silo, a feed switching component, a pressure regulating component and a discharge switching component;

[0008] Wherein, the housing is used to support and install other components;

[0009] Several of the metering components include sensing elements for monitoring the amount of powder in the silo;

[0010] Several of the silos include a barrel and a filter screen arranged inside the barrel, wherein the filter screen is used to intercept powder in the airflow to collect and temporarily store the powder;

[0011] The feed switching assembly includes a feed channel connected to a plurality of silos, and is used to switch the silo connected to the external suction pipe;

[0012] The pressure regulating component includes an air extraction channel and an air charging channel, and a plurality of the silos are connected to the air extraction channel and the air charging channel, so as to form a negative pressure by extracting air from one of the silos and forming a positive pressure by charging the remaining metering components, thereby realizing positive pressure unloading and negative pressure suction operations;

[0013] The unloading switching assembly includes an opening and closing element arranged on the lower side of the silo, and a plurality of the opening and closing elements are connected to the same unloading channel for converting the opening and closing of the opening and closing elements into unloading operations of the corresponding silo.

[0014] Preferably, the two metering components include a bracket for supporting the silos, and the sensing element is arranged on the lower side of the bracket to monitor the powder stock in the two silos.

[0015] Preferably, the feed channel includes a material guide pipe connected to two material barrels, and the ends of the two material guide pipes are connected to a feed three-way valve for switching the material barrel connected to the external suction pipe.

[0016] Preferably, the pressure regulating assembly further comprises an air pump disposed on the shell for regulating the air pressure state in the barrel.

[0017] Preferably, the air extraction channel and the air charging channel both include three-way valves respectively connected to the two barrels, and the ends of the two three-way valves are connected to the two ends of the air pump for switching and adjusting the air pressure state in the barrel.

[0018] In summary, this application includes the following beneficial technical effects:

[0019] Through the coordinated use of the metering component, silo, feed switching component, pressure regulating component and unloading switching component, the metering component monitors the weight of the powder inside the silo, and switches the feeding and discharging states after reaching the set threshold. The pressure regulating component generates airflow, controls the air pressure inside the silo, and realizes the suction and unloading operations of the powder. The feeding component and the unloading component control the feeding and unloading directions of the powder, and realizes continuous suction and feeding operations by alternating suction and unloading, thereby improving work efficiency. At the same time, during positive pressure unloading, the airflow passes through the air blowing three-way valve to reversely flush the filter screen to avoid clogging of the filter screen. Compared with the existing technology, it has the effects of high production efficiency, low operating difficulty and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a three-dimensional structure from a first-view perspective of an embodiment of the application;

[0021] Figure 2 is a schematic diagram of a second perspective stereoscopic structure of an embodiment of the application;

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure from a third perspective of an embodiment of the application.

[0023] Explanation of the reference numerals: 1. Shell; 2. Metering assembly; 201. Support plate; 202. Pressure sensor; 203. Bracket; 3. Silo; 301. Hopper; 302. Air disc; 303. Filter; 4. Feed switching assembly; 401. Feed three-way valve 1; 402. Feed guide pipe; 5. Pressure regulating assembly; 501. Air pump; 502. Exhaust three-way valve; 503. Blow three-way valve; 6. Discharge switching assembly; 601. Three-way pipe; 602. Discharge valve. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-3 This application is described in further detail.

[0025] The present application embodiment discloses a powder suction machine. Figure 1-3 The powder suction machine includes a shell 1, through which the whole mechanism is supported and installed, a metering component 2 is installed in the shell 1, and the metering component 2 includes a support plate 201 and two brackets 203 installed on the support plate 201, which are supported and installed with the corresponding silos 3 respectively through the brackets 203, and a plurality of pressure sensors 202 are arranged between the support plate 201 and the brackets 203, and the weight of the powder inside the silo 3 is monitored by the pressure sensors 202. When the set threshold is reached, the feeding and discharging states of the silo 3 are switched, and the silos 3 are installed on the two brackets 203, and the powder is collected and temporarily stored through the silos 3, and the side of the shell 1 is installed with A feed switching component 4 includes a feed three-way valve 401 connected to two silos 3, which is used to switch the feed silos 3. The upper ends of the two silos 3 are connected with a pressure regulating component 5. The pressure regulating component 5 includes an air pump 501. The two ends of the air pump 501 are respectively connected with an exhaust three-way valve 502 and an exhaust three-way valve 502. The exhaust three-way valve 502 and the blowing three-way valve 503 are both connected to the two silos. By switching the states of the exhaust three-way valve 502 and the blowing three-way valve 503, the air pressure inside the silo 3 is adjusted to realize the unloading and feeding states of the two silos 3. A unloading switching component 6 is installed at the lower ends of the two silos 3, and unloading is performed through the unloading switching component 6.

[0026] Reference Figure 3 The silo 3 includes a hopper 301 mounted on the bracket 203. The hopper 301 is detachably mounted with a fan disk 302, which is convenient for replacing and maintaining the filter 303. A filter 303 is installed between the fan disk 302 and the hopper 301. The powder is filtered and retained by the filter 303 to prevent dust from entering the pressure regulating component 5.

[0027] Reference Figure 2The two ends of the exhaust three-way valve 502 and the blowing three-way valve 503 are respectively connected to the top of the corresponding wind disk 302, and the state of the air pump 501 being connected to the silo 3 is switched to realize the internal exhaust of the silo 3 to form a negative pressure to complete the powder suction operation, and the silo 3 is inflated to the inside of the silo 3 to reversely flush the filter 303 to avoid clogging of the filter 303. At the same time, a positive pressure is formed in the silo 3, which can assist in unloading and improve the unloading efficiency. At the same time, it can also prevent external dust from entering the silo 3.

[0028] Reference Figure 2 The two ends of the feed three-way valve 401 are connected with the hopper 301 through the guide pipe 402. By switching the conduction state of the feed three-way valve 401, the feed three-way valve 401 is connected with the silo 3 in a negative pressure state, and is cut off from the silo 3 in an internal positive pressure state, thereby realizing negative pressure extraction and positive pressure discharge operations.

[0029] Reference Figure 2 The unloading switching component 6 includes a unloading valve 602 installed at the lower end of the hopper 301, and a three-way pipe 601 is installed between the two unloading valves 602. The unloading valve 602 is opened and closed to control the conduction state between the hopper 301 and the three-way pipe 601, so that the three-way pipe 601 is cut off from the silo 3 in a negative pressure state, and is connected with the silo 3 in an internal positive pressure state, so as to realize negative pressure extraction and positive pressure discharge operations. The unloading valve 602, the air extraction three-way valve 502, the air blowing three-way valve 503, the feed three-way valve 401, and the pressure sensor 202 are all electrically connected to the external terminal controller. The unloading valve 602, the air extraction three-way valve 502, the air blowing three-way valve 503, and the feed three-way valve 401 are all electric valves or pneumatic valves to realize automatic control of the feeding and unloading state of the hopper 301.

[0030] The implementation principle of the powder suction machine of the embodiment of the present application is as follows: the gravity threshold of the powder in the silo 3 is set by an external terminal controller, the air pump 501 is started, and the conduction states of the exhaust three-way valve 502, the blowing three-way valve 503, the feed three-way valve 401, and the discharge valve 602 are controlled to realize that one silo 3 is in a negative pressure state and the other silo 3 is in a positive pressure state, so that the feed three-way valve 401 is connected to the silo 3 in a negative pressure state and is cut off from the silo 3 in an internal positive pressure state, and the pressure inside the silo 3 is monitored by the pressure sensor 202. The weight of the powder material is determined by the three-way pipe 601, which is cut off from the silo 3 in a negative pressure state and connected to the silo 3 in an internal positive pressure state, to realize negative pressure extraction and positive pressure discharge operations. When the set threshold is reached, the conduction states of the suction three-way valve 502, the blowing three-way valve 503, the feed three-way valve 401 and the discharge valve 602 are switched to switch the silo 3 whose powder material weight reaches the set threshold to the positive pressure discharge state. At the same time, during positive pressure discharge, the blowing three-way valve 503 is used to reversely flush the filter 303 to avoid clogging of the filter 303.

[0031] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0032] Secondly: In the drawings of the embodiments disclosed in the present utility model, only the structures related to the embodiments disclosed in the present utility model are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present utility model can be combined with each other;

[0033] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A powder suction machine, comprising a housing (1), a metering component (2), a silo (3), a feed switching component (4), a pressure regulating component (5) and a discharge switching component (6); in, The housing (1) is used to support and install other components; Several of the metering components (2) include sensing elements for monitoring the amount of powder in the silo (3); Several of the silos (3) include a barrel and a filter (303) arranged inside the barrel, wherein the filter (303) is used to intercept powder in the airflow to achieve collection and temporary storage of the powder; The feed switching assembly (4) comprises a feed channel connected to a plurality of silos (3) and is used to switch the silo (3) connected to the external suction pipe; The pressure regulating component (5) comprises an air extraction channel and an air charging channel, and a plurality of the silos (3) are connected to the air extraction channel and the air charging channel, so as to form a negative pressure by extracting air from the inside of one of the silos (3) and form a positive pressure by charging the inside of the remaining metering components (2), thereby realizing positive pressure unloading and negative pressure suction operations; The unloading switching assembly (6) comprises an opening and closing element arranged on the lower side of the silo (3), and a plurality of the opening and closing elements are connected to the same unloading channel for converting the opening and closing of the opening and closing elements into unloading operations of the corresponding silo (3).

2. The powder suction machine according to claim 1, characterized in that: The two metering components (2) include a bracket (203) for supporting the silos (3), and the sensing element is arranged on the lower side of the bracket (203) for monitoring the powder stock in the two silos (3).

3. The powder suction machine according to claim 1, characterized in that: The feed channel comprises a material guide pipe (402) connected to two material barrels, and the ends of the two material guide pipes (402) are connected to a feed three-way valve (401) for switching the material barrel connected to the external suction pipe.

4. The powder suction machine according to claim 1, characterized in that: The pressure regulating assembly (5) further comprises an air pump (501) arranged on the housing (1) and used for regulating the air pressure state in the barrel.

5. The powder suction machine according to claim 4, characterized in that: The air extraction channel and the air charging channel both include three-way valves respectively connected to the two barrels, and the ends of the two three-way valves are connected to the two ends of the air pump (501) for switching and adjusting the air pressure state in the barrel.

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