Filter device with filter element dust removal function

Abstract

The present invention discloses a filter device with a filter element dust removal function, which includes a filter chamber, a coarse filter screen, a filter element, an air induction ring, a fixed ring, a guide ring, a compression spring and a vibration motor. The filter device can achieve the following goals: 1. During cleaning operations, vibration cleaning is adopted to achieve continuous cleaning while working and improve work efficiency; 2. During non-cleaning operations, vibration + back-blowing combined cleaning is adopted to achieve deep cleaning of the filter element and improve the working effect; 3. Compared with technical solutions such as pulse vibration cleaning, this invention has a simple principle, reliable structure, low cost and significant effect.

Description

Technical Field

[0001] The invention relates to the field of sanitation equipment, and in particular to a filtering device with a filter element dust removal function. Background Art

[0002] At present, the mainstream dry road cleaning vehicles on the market all adopt pneumatic conveying technology solutions with high working efficiency and good working effects. Its working principle is to suck in the gas mixed with pollutants from the suction nozzle, and the large particles of pollutants are separated and settled from the gas in the trash can. The remaining turbid gas is purified by the filter element and discharged from the exhaust port.

[0003] However, in actual use, it is found that when there is a lot of dust on the road, the filter element is easily blocked, resulting in increased exhaust resistance and poor suction effect. The filter element needs to be cleaned or replaced regularly, which affects the daily use of customers. At present, pulse vibration generated by the instantaneous release of high-pressure gas is usually used for cleaning, but due to the limitation of gas volume and pressure, continuous cleaning is not possible, and the cleaning effect is not ideal. At the same time, there are disadvantages such as high power consumption, high noise, and high cost. Summary of the invention

[0004] In order to overcome the deficiencies in the prior art, the present invention proposes a filtering device with a filter element dust removal function which has a simple principle, a reliable structure, a low cost and a significant effect.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A filter device with a filter element dust removal function, comprising a filter chamber, a coarse filter screen, a filter element, an air induction ring, a fixing ring, a guide ring, a compression spring and a vibration motor;

[0007] The bottom of the filter chamber is connected to the trash can to form a closed space, the air inlet flange of the filter chamber is connected to the suction nozzle through a pneumatic conveying air duct, the outer wall of the filter chamber is connected to an air inlet, and the inside of the filter chamber is connected to an air inlet opening and closing valve that can be opened and closed;

[0008] The air induction ring, the flange at the bottom of the filter element, the compression spring and the coarse filter are fixedly connected to the fixed flange around the air outlet at the top of the filter chamber through guide studs from top to bottom;

[0009] The side wall of the air inlet ring is connected to an air inlet ring, and the air inlet ring and the air inlet are connected via an air inlet pipe;

[0010] The fixing ring is fixed on the upper surface of the filter element, and a plurality of sealing plates are connected between the air induction ring and the fixing ring at intervals along the circumferential direction, and the two ends of the rotating shaft on the side of the sealing plate are rotatably connected to the air induction ring and the fixing ring respectively;

[0011] The guide ring is rotatably connected to the fixed ring, and the guide shaft on the other side of the sealing plate is slidably sleeved in the corresponding sealing plate opening and closing guide groove on the guide ring; the guide ring is driven to rotate by the opening and closing driving device, thereby driving the sealing plate to open and close;

[0012] The vibration motor is arranged on the upper surface of the filter element.

[0013] Furthermore, a trash can sealing ring is provided in the fixed groove at the bottom of the filter chamber, and the trash can sealing ring is tightly fitted and sealed with the trash can.

[0014] Furthermore, the air inlet opening and closing valve is hinged to one end of the air inlet opening and closing swing arm, and the other end of the air inlet opening and closing swing arm is hinged to the air inlet opening and closing push rod.

[0015] Furthermore, the coarse filter screen is composed of a coarse filter screen surface and a circular sealing ring fixing groove, the circular sealing ring fixing groove is arranged around the coarse filter screen surface, a circular sealing ring is arranged in the circular sealing ring fixing groove, and the circular sealing ring is sealed and fitted with the flange surface at the bottom of the filter element.

[0016] Furthermore, annular sealing gaskets are respectively provided between the air induction ring and the flange at the bottom of the filter element and between the coarse filter screen and the fixed flange around the air outlet at the top of the filter chamber.

[0017] Furthermore, there are a plurality of balls between the guide ring and the fixed ring, and each ball is correspondingly arranged in a ball groove on the fixed ring.

[0018] Furthermore, a guide ring rotation guide groove is provided on the guide ring, and the guide ring rotation guide groove is slidably sleeved with the guide ring fixing pin on the fixing ring.

[0019] Furthermore, the opening and closing drive device includes a sealing plate opening and closing push rod and a guide ring handle, one end of the sealing plate opening and closing push rod is hinged to the upper surface of the filter element, the other end of the sealing plate opening and closing push rod is hinged to one end of the guide ring handle, the middle hole of the guide ring handle is hinged to the upper surface of the filter element, and the other end of the guide ring handle is hinged to the handle pin at the top of the guide ring.

[0020] In addition, the present invention also provides a road cleaning vehicle, wherein the filtering device described in the above technical solution is installed on the road cleaning vehicle.

[0021] The present invention adopts the above technical solution and has the following beneficial technical effects:

[0022] 1. During cleaning operations, vibration cleaning can be used to achieve continuous cleaning while working, thus improving work efficiency;

[0023] 2. When not cleaning, use vibration + back-blowing combined with dust removal to achieve deep cleaning of the filter element and improve the operation effect;

[0024] 3. Compared with pulse vibration cleaning and other technical solutions, this invention has a simple principle, reliable structure, low cost and significant effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments;

[0026] Figure 1 It is a schematic diagram of the overall assembly of the filtering device with the filter element dust removal function of the present invention;

[0027] Figure 2 It is a schematic diagram of the filtering working state of the filtering device with the filter element dust removal function of the present invention;

[0028] Figure 3 It is a schematic diagram of the deep cleaning state of the filter element of the filter device with the filter element dust removal function of the present invention;

[0029] Figure 4 A schematic diagram of the filter chamber structure of the filter device with the filter element dust removal function of the present invention;

[0030] Figure 5 A schematic diagram of the coarse filter structure of the filter device with the filter element dust removal function of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the air induction ring of the filter device with the filter element dust removal function of the present invention;

[0032] Figure 7 It is a schematic diagram of the guide ring structure of the filter device with the filter element dust removal function of the present invention;

[0033] Figure 8 It is a schematic diagram of the fixing ring structure of the filter device with the filter element dust removal function of the present invention;

[0034] Fig. 9 It is a schematic diagram of the sealing plate structure of the filtering device with filter element dust removal function of the present invention. DETAILED DESCRIPTION

[0035] like Figure 1-9 As shown, the filter device with filter element dust removal function of the present invention is applied to a road cleaning vehicle, which includes a filter chamber 2, a coarse filter screen 4, a filter element 6, an air induction ring 7, a fixing ring 9, a guide ring 10, a compression spring 17 and a vibration motor 12;

[0036] The bottom of the filter chamber 2 is connected to the trash can to form a closed space. Furthermore, a trash can sealing ring 1 is provided in the fixed groove at the bottom of the filter chamber 2, and the trash can sealing ring 1 is tightly sealed with the trash can; the air inlet flange 201 of the filter chamber 2 is connected to the suction nozzle through a pneumatic conveying air duct, and an air inlet 202 is connected to the outer wall of the filter chamber 2, and an air inlet opening and closing valve 18 that can be opened and closed is connected inside the filter chamber 2;

[0037] The air induction ring 7, the flange at the bottom of the filter element 6, the compression spring 17 and the coarse filter screen 4 are fixedly connected to the fixed flange 203 around the top air outlet of the filter chamber 2 in sequence from top to bottom through the guide studs 15;

[0038] The side wall of the air inlet 701 of the air inlet ring 7 is connected, and the air inlet 701 of the air inlet ring is connected to the air inlet 202 via an air inlet pipe 16;

[0039] The fixing ring 9 is fixed on the upper surface of the filter element 6, and a plurality of sealing plates 8 are connected between the air induction ring 7 and the fixing ring 9 at intervals along the circumferential direction. The two ends of the rotating shaft 801 on the side of the sealing plate 8 are rotatably connected to the air induction ring 7 and the fixing ring 9 respectively;

[0040] The guide ring 10 is rotatably connected to the fixed ring 9. Furthermore, there are multiple balls 14 between the guide ring 10 and the fixed ring 9, and each ball 14 is respectively arranged in a ball groove 903 on the fixed ring 9; the guide shaft 802 on the other side of the sealing plate 8 is slidably sleeved in the corresponding sealing plate opening and closing guide groove 102 on the guide ring 10, and the guide ring 10 is provided with a guide ring rotation guide groove 101, which slides with the guide ring fixing bayonet 901 on the fixed ring 9 The guide ring 10 is rotated by the opening and closing driving device, thereby driving the sealing plate 8 to open and close; further, the opening and closing driving device includes a sealing plate opening and closing push rod 11 and a guide ring handle 13, one end of the sealing plate opening and closing push rod 11 is hinged to the upper surface of the filter element 6, the other end of the sealing plate opening and closing push rod 11 is hinged to one end of the guide ring handle 13, the middle hole of the guide ring handle 13 is hinged to the upper surface of the filter element 6, and the other end of the guide ring handle 13 is hinged to the handle pin 103 at the top of the guide ring 10.

[0041] The vibration motor 12 is disposed on the upper surface of the filter element 6 .

[0042] The air inlet opening and closing valve 18 is hinged to one end of the air inlet opening and closing swing arm 19, and the other end of the air inlet opening and closing swing arm 19 is hinged to the air inlet opening and closing push rod 20, and the air inlet opening and closing valve 18 is driven by the air inlet opening and closing push rod 20 to open and close.

[0043] The coarse filter screen 4 is composed of a coarse filter screen surface 401 and a circular sealing ring fixing groove 402. The circular sealing ring fixing groove 402 is arranged around the coarse filter screen surface 401. A circular sealing ring 5 is arranged in the circular sealing ring fixing groove 402, and the circular sealing ring 5 is sealed to the flange surface at the bottom of the filter element 6.

[0044] In order to improve the sealing performance of the filter device of the present invention, annular sealing gaskets 3 are respectively provided between the air induction ring 7 and the flange at the bottom of the filter element 6 and between the coarse filter screen 4 and the fixed flange 203 around the top air outlet of the filter chamber 2.

[0045] Working principle of the present invention:

[0046] 1) When the vehicle is cleaning, the status of the filter device is as follows: Figure 2 As shown, at this time, the air inlet opening and closing push rod 20 is in an extended state to close the air inlet opening and closing valve 18, and the sealing plate opening and closing push rod 11 is also in an extended state to open the sealing plate 8, wherein the air inlet flange 201 is connected to the pneumatic conveying air duct, the filter chamber 2 is connected to the suction nozzle, and the trash can sealing ring 1 fits with the trash can to form a closed space. The flow direction of the gas is shown by the arrow in the figure. The gas mixed with pollutants enters the filter chamber 2 through the air inlet A. Due to gravity sedimentation and the filtering effect of the coarse filter 4, the pollutants are separated and deposited from the gas in the trash can. The turbid gas is purified by the filter element 6 and discharged from the exhaust port B, and the dust is gathered on the inner surface of the filter element 6 filter.

[0047] 2) When the vehicle is cleaning, if the filter element 6 is clogged and affects the suction force, the vibration motor 12 can be turned on to perform mechanical vibration cleaning without shutting down the pneumatic conveying system to remove most of the dust accumulated on the inner surface of the filter element 6.

[0048] 3) When the vehicle is finished cleaning, in order to avoid dust accumulation on the surface of the filter element 6, which will increase the exhaust resistance, affect the operation effect, and increase the energy consumption of the operation. At this time, adjust the filter device to Figure 3 The state shown is that the air inlet opening and closing push rod 20 contracts to open the air inlet opening and closing valve 18; the sealing plate opening and closing push rod 11 contracts to push the guide ring handle 13 to rotate and rotate the guide ring, thereby closing the sealing plate 8 and forming a closed body on the surface of the filter element 6. The suction nozzle is retracted off the ground, the trash can is separated from the trash can sealing ring 1, and then the vibration motor 12 is started, and the centrifugal fan of the pneumatic conveying system is turned on to provide a back-blowing air source. The flow direction of the gas is as follows Figure 3As shown by the middle arrow, since the clean gas is blocked by the air outlet opening and closing valve 18 after passing through the air inlet A, it can only enter the air inlet ring 7 through the air inlet 202. Due to the effect of the closed body surrounded by the closed sealing plate, the gas will diffuse to the surface of the filter element 6 and flow from the outer surface of the filter screen of the filter element 6 to the inside of the filter element 6. The dust attached to the inner surface of the filter screen is cleaned up by the backblowing airflow and discharged through the bottom of the filter chamber 2, thereby achieving deep cleaning of the filter element 6.

[0049] 4) The functions of the compression spring 17 mainly include two aspects: 1) to prevent the high-frequency vibration of the vibration motor 12 from being transmitted to other components due to the rigid connection, causing unnecessary damage or loosening, and to isolate the vibration source; 2) if the filter element 6 is cleaned under the rigid connection, the vibration motor 12 requires a larger exciting force, and this invention adjusts the length of the guide stud 15 to make the compression spring 17 produce compression deformation to obtain appropriate elastic potential energy, so that the filter element 6 can obtain appropriate support stiffness. At this time, the exciting force required by the vibration motor 12 can be effectively reduced to achieve a better filter element 6 cleaning effect.

[0050] 5) The back-blowing air source of the filter device is provided by the centrifugal fan of the pneumatic conveying system, and the back-blowing and cleaning function of the filter element 6 is realized by switching the air path through the opening and closing valve 18 of the air inlet.

[0051] The implementation of the present invention is described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation modes. The above-mentioned specific implementation modes are illustrative rather than limiting the present invention. Those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A filter device with a filter element dust removal function, characterized in that: It includes a filter chamber, a coarse filter screen, a filter element, an air induction ring, a fixing ring, a guide ring, a compression spring and a vibration motor; The bottom of the filter chamber is connected to the trash can to form a closed space, the air inlet flange of the filter chamber is connected to the suction nozzle through a pneumatic conveying air duct, the outer wall of the filter chamber is connected to an air inlet, and the inside of the filter chamber is connected to an air inlet opening and closing valve that can be opened and closed, and the air inlet opening and closing valve can block gas from entering the filter chamber when it is opened; The air induction ring, the flange at the bottom of the filter element, the compression spring and the coarse filter are fixedly connected to the fixed flange around the air outlet at the top of the filter chamber through guide studs from top to bottom; The side wall of the air inlet ring is connected to an air inlet ring, and the air inlet ring and the air inlet are connected via an air inlet pipe; The fixing ring is fixed on the upper surface of the filter element, and a plurality of sealing plates are connected between the air induction ring and the fixing ring at intervals along the circumferential direction, and the two ends of the rotating shaft on the side of the sealing plate are rotatably connected to the air induction ring and the fixing ring respectively; The guide ring is rotatably connected to the fixed ring, and the guide shaft on the other side of the sealing plate is slidably sleeved in the corresponding sealing plate opening and closing guide groove on the guide ring; the guide ring is driven to rotate by the opening and closing driving device, thereby driving the sealing plate to open and close; The vibration motor is arranged on the upper surface of the filter element.

2. The filtering device with filter element dust removal function according to claim 1, characterized in that: A garbage can sealing ring is arranged in the fixed groove at the bottom of the filter cavity, and the garbage can sealing ring is fitted and sealed with the garbage can.

3. The filtering device with filter element dust removal function according to claim 1, characterized in that: The air inlet opening and closing valve is hinged to one end of the air inlet opening and closing swing arm, and the other end of the air inlet opening and closing swing arm is hinged to the air inlet opening and closing push rod.

4. The filtering device with filter element dust removal function according to claim 1, characterized in that: The coarse filter screen consists of a coarse filter screen surface and a circular sealing ring fixing groove, which is arranged around the coarse filter screen surface. A circular sealing ring is arranged in the circular sealing ring fixing groove, and the circular sealing ring is sealed and fitted with the flange surface at the bottom of the filter element.

5. The filtering device with filter element dust removal function according to claim 1, characterized in that: Annular sealing gaskets are respectively arranged between the air induction ring and the flange at the bottom of the filter element and between the coarse filter screen and the fixed flange around the air outlet at the top of the filter chamber.

6. The filtering device with filter element dust removal function according to claim 1, characterized in that: There are a plurality of balls between the guide ring and the fixed ring, and each ball is correspondingly arranged in a ball groove on the fixed ring.

7. The filtering device with filter element dust removal function according to claim 1, characterized in that: The guide ring is provided with a guide ring rotation guide groove, and the guide ring rotation guide groove is slidably sleeved with the guide ring fixing bayonet on the fixing ring.

8. The filtering device with filter element dust removal function according to claim 1, characterized in that: The opening and closing driving device includes a sealing plate opening and closing push rod and a guide ring handle, one end of the sealing plate opening and closing push rod is hinged to the upper surface of the filter element, the other end of the sealing plate opening and closing push rod is hinged to one end of the guide ring handle, the middle hole of the guide ring handle is hinged to the upper surface of the filter element, and the other end of the guide ring handle is hinged to the handle pin at the top of the guide ring.

9. A road cleaning vehicle, characterized in that: It comprises the filtering device according to any one of claims 1 to 8.

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