CN215085599U

CN215085599U - Filter and back-blowing airflow switching device of dust collection vehicle

Info

Publication number: CN215085599U
Application number: CN202121415092.1U
Authority: CN
Inventors: 王琼
Original assignee: Irc Automation Co ltd
Current assignee: Irc Automation Co ltd
Priority date: 2021-06-24
Filing date: 2021-06-24
Publication date: 2021-12-10
Anticipated expiration: 2031-06-24

Abstract

The utility model provides a dirty-suction vehicle filters and blowback air current auto-change over device, includes fan, garbage bin and arranges in the dust filtering box on garbage bin upper portion, the play tuber pipe way and the return air pipeline that link to each other with the fan, another port of play tuber pipe way and return air pipeline is connected dust filtering box and garbage bin respectively, is provided with the switching-over valve, and the play tuber pipe way passes through the switching-over valve and links to each other with dust filtering box, and the return air pipeline passes through the switching-over valve and links to each other with the garbage bin. The utility model discloses a set up the switching-over valve device can change the interior of business turn over filtration dirt case at any time, can realize through the wind direction conversion that the dust absorption normally works and the filter core blowback is clean, improves filter effect and dust collection efficiency. The used material of this structure is ordinary seamless pipe, does benefit to batch production and reduce cost, makes the dress and easily can realize standardized modularization and automated production, and it is convenient to maintain.

Description

Filter and back-blowing airflow switching device of dust collection vehicle

Technical Field

The utility model relates to a dust absorption of sweeping floor dirty-suction vehicle filters and filter screen cleaning device accomplishes the dust absorption through control airflow direction and filters and filter core clean process in order to realize filter core cyclic utilization, specifically is a dirty-suction vehicle filters and blowback air current auto-change over device.

Background

In the dust collection vehicle in the prior art, the cleaning of the filter element is realized by means of vibration, a cleaning brush and the like, and a vibration motor and a new cleaning mechanism are additionally arranged. Existing solutions increase costs and failure rates. The increase of the cleaning motor can increase the power consumption of the whole vehicle, and the increase of the cleaning brush can have high requirement on the space of the whole vehicle. The Chinese patent CN 203750311U discloses a dust collecting vehicle filter cylinder ash removal device, which is provided with a high-pressure air storage tank, when dust on a filter cylinder is excessively gathered and the filtering effect is influenced, a pulse electromagnetic valve acts, high-pressure air is sprayed out from the air storage tank at high speed to enter the interior of the filter cylinder, and then the fine dust adhered to the folds of the filter cylinder is blown (vibrated).

Disclosure of Invention

The invention provides a complete structure of a novel scheme for realizing automatic cleaning of a filter element in a dust collection vehicle through back blowing, which is realized by manually adjusting the position of a central piston barrel to realize the air flow direction of air in an air path system.

The utility model provides a dirty-suction vehicle filters and blowback air current auto-change over device, includes fan, garbage bin and arranges in the filtration dirt case on garbage bin upper portion, the play tuber pipe way and the return air pipeline that link to each other with the fan, another port of play tuber pipe way and return air pipeline is connected filtration dirt case and garbage bin respectively, and characterized by is provided with the switching-over valve, the pipeline that goes out links to each other with filtering the dirt case through the switching-over valve, the return air pipeline passes through the switching-over valve and links to each other with the garbage bin.

The dust collection vehicle filtering and back-blowing airflow switching device is characterized in that the reversing valve comprises a valve body and a valve core, a top cover and a bottom cover are respectively arranged at two ends of the valve body, a radial pipe connecting port is formed in the valve body, the valve core is arranged in the valve body, and an airflow through hole which is radially communicated is formed in the valve core.

The utility model discloses a dust absorption car filters and blowback air current auto-change over device, characterized by case both ends have the plate washer, be provided with two radial through-holes on the case body, there is the baffle between two radial through-holes, baffle and plate on be provided with seal groove and O shape circle respectively, vertically be provided with A nozzle and B nozzle on the periphery of valve body side by side, with the opposite side that A nozzle and B nozzle are relative is provided with C nozzle, D nozzle and E nozzle, the nozzle cross setting of periphery both sides.

The dust collection vehicle filtering and back-blowing airflow switching device is characterized in that the pipe connection port A is connected with an air outlet of a fan through a connection pipe, the pipe connection port B is connected with a back-blowing port of the fan through a connection pipe, the pipe connection port C is connected with an air inlet of a dust filtering box through a connection pipe, and the pipe connection port D and the pipe connection port E are connected with an inner cavity of the dust filtering box through connection pipes.

The utility model discloses a dirty-suction vehicle filters and blowback air current auto-change over device sets up the switching-over valve device and can change the inward of business turn over filtration dirt case at any time, can realize through the wind direction conversion that the dust absorption normally works and the filter core blowback is clean, improves filter effect and dust collection efficiency. The used material of this structure is ordinary seamless pipe, does benefit to batch production and reduce cost, makes the dress and easily can realize standardized modularization and automated production, and it is convenient to maintain.

Drawings

FIG. 1 is a side elevational view of a cleaning vehicle;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a view in the direction A of FIG. 1;

FIG. 4 is a view from the direction B of FIG. 1;

FIG. 5 is a schematic view of the valve body construction;

FIG. 6 is a top view of FIG. 5

FIG. 7 is a schematic view of the valve cartridge configuration;

FIG. 8 is a schematic view of the distribution of the air holes of the valve system;

FIG. 9 is a schematic view of the valve cartridge position during normal operation of the vehicle;

FIG. 10 is a schematic view of the position of the valve core during reverse blow cleaning of the filter screen.

In the figure, 1-wind hole; 2-a dust absorption barrel; 3-dust collection main pipe; 4-sealing groove; 5-a top cover; 6-baffle plate; 7-a pull rod; 8, a garbage can; 9-a frame; 10-connecting pipe orifice; 11-a separator; 12-a fan; 13-a valve core; 14-a diverter valve; 15-a valve body; 16-a bottom cover; 17-a dust filtration tank; 18-O-rings; a 21-A port connecting pipe; a 22-B port connecting pipe; a 23-C port connecting pipe.

Detailed Description

The following describes the filtering and reverse blowing airflow switching device of the vacuum sweeper in detail with reference to the attached drawings.

As shown in fig. 5-6, the valve body 15 of the present invention comprises a cylindrical housing, both ends of which are respectively sealed by the top cover 5 and the bottom cover 16, a pull rod hole is provided at the center of the top cover, two rows of pipe receiving ports 10 are respectively provided on the cylindrical housing at intervals of 180 degrees, one row is two, the other row is three, and the two rows of pipe receiving ports are arranged in a staggered manner.

As shown in fig. 7-8, the valve element 13 of the present invention is hollow cylinder, both ends are sealed by the baffle 6, the middle part of the cylinder is provided with a partition 11 to divide the valve element into two sections, two sections of the cylinder valve element body are respectively provided with radial through holes, namely, the wind holes 1, and the holes are oblong. A sealing groove 4 is arranged on the baffle plates and the partition plate, an O-shaped ring is embedded into the sealing groove, a pull rod fixing hole is further formed in one baffle plate, and a pull rod 7 is inserted into the hole and is fixedly sealed by a bolt.

The valve core is arranged in the valve body cavity, the top cover and the bottom cover at two ends of the valve body are fixedly arranged, and the pull rod 7 extends out of the pull rod hole of the top cover.

The valve body is of a carbon steel plate welding structure, and is small in size, light in weight and compact in structure. And (4) surfacing welding is carried out on the sealing surface, the sealing surface is rust-proof and corrosion-resistant, and after the sealing surface is subjected to finish machining, the surface roughness Ra is less than or equal to 3.2 mu m. The valve core is a carbon steel plate weldment and is provided with reinforcing ribs, so that the strength of the valve core is increased, the function of the partition plate is realized, and the coaxiality is ensured. The outer surface of the valve core is embedded with a polyurethane rubber ring, and the material has the characteristics of oil resistance, wear resistance, stable performance, good sealing performance and long service life. When the sealing ring is installed in the valve body, the spherical surface of the sealing ring is contacted with the sealing surface of the valve body to generate extrusion elastic deformation, so that the sealing effect is achieved. Ensuring that the sealing performance of each channel is synchronously in place.

Fig. 9-10 show, the utility model provides a reversing valve has 5 ports altogether, and wherein A mouthful is through taking over connection fan air outlet, and B mouthful is then through taking over connection fan return air inlet, and C mouthful is through taking over connection filtration dirt case exocoel, D mouthful and E mouthful connection filtration dirt case inner chamber. During operation, the function of wind direction conversion of the air port C is realized through axial displacement of the valve core.

As shown in fig. 9, the air inlet at the port a and the air outlet at the port C are in an initial state, the air outlet from the fan is communicated with the sucked dust and enters the dust filtering box from the port a through the port C, the air inlet at the port E and the air outlet at the port B are in a complete air path circulation, and the filtered air flowing out from the inner cavity of the dust filtering box returns to the air outlet of the fan through the port E and the port B and is discharged, at this time, the port D is in a blocking state.

As shown in fig. 10, when the pull rod 7 pulls the valve core to move axially to one side of the top cover, the port a is communicated with the port D, the dust collection operation is stopped at the moment, the fan keeps working state, the air from the fan enters the blowback filtering membrane in the inner cavity of the dust filtering box after the port a enters air and the port D gives out air, the air from the dust filtering box after the port C enters air and the port B gives out air is returned to the fan through the port B by the port C, the air path circulation of the blowback cleaning filter is formed, the two working states are mutually switched to realize the function of changing the air flowing direction of the port C, and therefore the purpose of cleaning the filter is achieved.

As shown in fig. 1-4, the reversing valve 14 is vertically installed at one side of the garbage can 8 at the rear part of the frame 9, the C-port connecting pipe 23 is connected to the upper part of the dust filtering box 17, the a-port connecting pipe 21 is connected to the air outlet of the fan 12, and the B-port connecting pipe 22 is connected to the return air inlet of the fan. The upper part of a dust collection barrel 2 consisting of a main part and two auxiliary parts is connected with a dust collection main pipe 3, and the tail end of the dust collection main pipe is connected with a fan 12.

The valve body is divided into two chambers by an internal piston partition, each chamber having 4 passages. The valve body is of a carbon steel plate welding structure, the size is small, the weight is light, the structure is compact, the utilization rate of materials is improved, the production period is shortened, and the cost is reduced. And (4) surfacing welding is carried out on the sealing surface, the sealing surface is rust-proof and corrosion-resistant, and after the sealing surface is subjected to finish machining, the surface roughness Ra is less than or equal to 3.2 mu m. There are two sets of seal assemblies, and each set of seal assembly comprises O type sealing washer, bolt. The piston is a carbon steel plate weldment and is provided with reinforcing ribs, so that the strength of the piston is increased, the effect of a partition plate is achieved, and the coaxiality is guaranteed. The piston is embedded with a polyurethane rubber ring on the outer surface, and the material has the characteristics of oil resistance, wear resistance, stable performance, good sealing performance and long service life. Under the action of the connecting rod, the spherical surface of the sealing ring is in contact with the sealing surface of the valve body to generate extrusion elastic deformation, so that the sealing effect is achieved. Ensuring that the sealing performance of each channel is synchronously in place. And the used material of this structure is ordinary seamless pipe, does benefit to batch production and reduce cost, and the manufacturing is installed and is easily can realize standardized modularization and automated production, and it is convenient to maintain.

Claims

1. The utility model provides a dirty-suction vehicle filters and blowback air current auto-change over device, includes fan (12), garbage bin (8) and arranges in filtration dirt case (17) on garbage bin upper portion, the play wind pipeline and the return air pipeline that link to each other with the fan, another port on play wind pipeline and return air pipeline is connected filtration dirt case and garbage bin respectively, and characterized by is provided with switching-over valve (14), it links to each other with filtration dirt case through the switching-over valve to go out the wind pipeline, the return air pipeline passes through the switching-over valve and links to each other with the garbage bin.

2. The device as claimed in claim 1, wherein the reversing valve comprises a valve body (15) and a valve core (13), the two ends of the valve body are respectively provided with a top cover (5) and a bottom cover (16), the valve body is provided with a radial nozzle (10), the valve core is arranged in the valve body, and the valve core is provided with a radially through air flow through hole.

3. The device for switching between filtering and reverse blowing airflow of the vacuum sweeper according to claim 2, wherein baffles (6) are arranged at two ends of the valve core, two radial through holes are formed in the valve core body, a partition plate (11) is arranged between the two radial through holes, a sealing groove (4) and an O-shaped ring (18) are respectively arranged on the partition plate and the baffles, an A pipe connecting port and a B pipe connecting port are longitudinally arranged on the circumferential surface of the valve body side by side, a C pipe connecting port, a D pipe connecting port and an E pipe connecting port are arranged on the other side of the valve body opposite to the A pipe connecting port and the B pipe connecting port, and the pipe connecting ports on two sides of the circumferential surface are arranged in a staggered mode.

4. The device for switching between filtering and reverse blowing of a vacuum sweeper according to claim 2, wherein the pipe connection A is connected with the air outlet of the fan (12) through a pipe connection, the pipe connection B is connected with the air return inlet of the fan (12) through a pipe connection, the pipe connection C is connected with the air inlet of the dust filtering box through a pipe connection, and the pipe connection D and the pipe connection E are connected with the inner cavity of the dust filtering box through a pipe connection.