Anti-blocking and automatic cleaning device for pulse valve

Abstract

The utility model discloses an anti-blocking and automatic cleaning device for a pulse valve, and belongs to the technical field of pulse valves. Comprising a valve body, an air inlet and a connecting pipe, the air inlet is formed in the front end of the valve body, the connecting pipe is installed at the front end of the air inlet, the multiple long guide rods are fixed in the connecting pipe, the long guide rods are axially sleeved with the main sliding ring, the multiple short guide rods are fixed in the main sliding ring, and the auxiliary sliding ring is arranged on the main sliding ring. The auxiliary sliding ring is driven by power and axially arranged on the short guide rod in a sleeving mode, a filter plate is fixed to the auxiliary sliding ring, a spring is arranged at the rear end of the short guide rod in a sleeving mode, and the front end of the spring is fixed to the auxiliary sliding ring. According to the anti-blocking and automatic cleaning device for the pulse valve, the main sliding ring and the short guide rod are driven by power to move towards the top plate, the auxiliary sliding ring moves backwards under the action of the top plate to generate impact force, impurities attached to the filter plate are shaken off, and the purpose of preliminarily cleaning the filter plate is achieved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of pulse valves, in particular to a pulse valve anti-blocking and automatic cleaning device. BACKGROUND

[0002] The pulse valve is widely applied in industrial dust removal, pneumatic conveying and many other fields, and the pulse valve controls the blowing of compressed air by periodically opening and closing to realize the functions of dust removal and ash removal, etc. If the compressed air or other gas medium used in industrial production is not subjected to sufficient filtering and purification treatment, the medium will contain impurities such as dust, sand, metal scraps and oil stains. The impurities enter the pulse valve along with the airflow and are easily attached at the air inlet. Some small particles can also move to the air outlet through the valve core and adhere there. For example, in some mine, building and other environments with large dust, if the filtering device of the compressed air system is not effective, the air inlet of the pulse valve is easily blocked by a large amount of dust and impurities.

[0003] The working principle of the pulse valve is that the pulse control instrument sends an electric signal to make the coil in the electromagnetic pilot head generate a magnetic field, the pilot valve core moves upward to open the pilot valve channel, the pressure in the air chamber above the diaphragm is reduced, the diaphragm is lifted under the action of the pressure difference between the upper and lower pressures, the pulse valve is opened, the compressed air is sprayed from the air inlet through the blowing port, and after the electric signal disappears, the coil loses power, the pilot valve core resets, the pressure in the air chamber above the diaphragm is restored, the diaphragm closes the pulse valve, and the blowing is stopped.

[0004] Some existing pulse valves are provided with simple filtering structures during use, but most of them are fixed filter screens which cannot be effectively cleaned after the impurities accumulate. With the passage of time, the filter screen is seriously blocked, which not only increases the air inlet resistance, reduces the blowing effect of the pulse valve, affects dust removal, but also can cause the internal parts of the pulse valve to wear out more severely and shorten the service life of the pulse valve. Therefore, a pulse valve anti-blocking and automatic cleaning device needs to be designed to solve the above problems. CONTENT OF THE INVENTION

[0005] Based on the above problems existing in the prior art, the application aims to provide a pulse valve anti-blocking and automatic cleaning device to solve the problem that the filter screen cannot be automatically cleaned and dusted in the existing equipment.

[0006] The technical scheme adopted by the application to solve its technical problems is: the pulse valve anti-blocking and automatic cleaning device, comprising a valve body, an air inlet and a connecting pipe, the air inlet is arranged at the front end of the valve body, the connecting pipe is installed at the front end of the air inlet, further comprising long guide rods, a main sliding ring, short guide rods and an auxiliary sliding ring, a plurality of long guide rods are fixed in the connecting pipe, the main sliding ring is axially sleeved on the long guide rods, a plurality of short guide rods are fixed in the main sliding ring, the auxiliary sliding ring is axially sleeved on the short guide rods through power driving, a filter plate is fixed on the auxiliary sliding ring, a spring is sleeved at the rear end of the short guide rod, and the front end of the spring is fixed on the auxiliary sliding ring.

[0007] A top plate is fixed on the long guide rod, the rear end of the top plate abuts against the main and auxiliary sliding rings and compresses the spring.

[0008] Further, an installation frame is fixed on the connecting pipe, an electric telescopic rod is installed on the installation frame, an intermediate plate is installed at the output end of the electric telescopic rod, a sliding groove is arranged on the connecting pipe, and the lower end of the intermediate plate penetrates through the sliding groove and is fixed with the upper end of the main sliding ring.

[0009] Further, a sealing cover is fixed on the connecting pipe, and the output end of the electric telescopic rod drives the intermediate plate to move axially in the sealing cover.

[0010] Further, the spring is used to keep the auxiliary sliding ring in a tendency of moving towards the front end.

[0011] Further, a plurality of baffle plates are fixed at the rear end of the connecting pipe, which are suitable for limiting the position of the auxiliary sliding ring moving axially towards the rear end.

[0012] Further, a baffle ring is fixed at the front end of the short guide rod, which is suitable for limiting the position of the auxiliary sliding ring moving axially towards the front end.

[0013] Further, an exhaust port is arranged at the lower end of the valve body.

[0014] The beneficial effects of the application are: the pulse valve anti-blocking and automatic cleaning device provided by the application can effectively intercept impurities such as dust, sand particles and metal scraps before the gas enters the valve body through the filter plate, then the main sliding ring and the short guide rod are driven by power to move towards the top plate, the auxiliary sliding ring is driven to move backward by the top plate to generate an impact force, the impurities adhering to the filter plate are shaken off, and the purpose of preliminary cleaning of the filter plate is achieved.

[0015] During the process of driving the main sliding ring and the short guide rod to move backward, the spring drives the auxiliary sliding ring to move forward, the impact force shakes the filter plate again, the impurities on the filter plate are shaken off again, and the filtering capacity of the filter plate is maintained. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the pulse valve anti-clogging and automatic cleaning device according to an embodiment of this application;

[0018] Figure 2 This is a first assembly drawing of the internal components of the connecting tube according to an embodiment of this application;

[0019] Figure 3 This is a second assembly drawing of the internal components of the connecting tube according to an embodiment of this application;

[0020] Figure 4 This is a three-dimensional structural diagram of the main slip ring and filter plate according to an embodiment of this application;

[0021] Figure 5 This is a three-dimensional structural diagram of the long guide rod and top plate according to an embodiment of this application.

[0022] The following are the labeling elements in the figure:

[0023] 1. Valve body; 2. Exhaust port; 3. Inlet port; 4. Connecting pipe; 5. Long guide rod; 6. Main slip ring; 7. Short guide rod; 8. Auxiliary slip ring; 9. Filter plate; 10. Spring; 11. Baffle; 12. Buffer ring; 13. Top plate; 14. Mounting frame; 15. Electric telescopic rod; 16. Intermediate plate; 17. Slide groove; 18. Sealing cover. Detailed Implementation

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0025] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0026] like Figures 1-5 As shown, the pulse valve anti-clogging and automatic cleaning device includes a valve body 1, an air inlet 3 and a connecting pipe 4, with the air inlet 3 located at the front end of the valve body 1.

[0027] The front end of the valve body 1 is connected with the air inlet 3 by welding, which ensures firm connection and good sealing, prevents gas leakage, and the connecting pipe 4 is installed at the front end of the air inlet 3 and connected by flange connection, and a sealing gasket is arranged to ensure smooth air inlet channel;

[0028] The connecting pipe 4 is installed at the front end of the air inlet 3, and further comprises long guide rods 5, a main sliding ring 6, short guide rods 7 and an auxiliary sliding ring 8.

[0029] The long guide rods 5 are evenly distributed and fixed in the connecting pipe 4, and can be fixed by welding, and the long guide rods 5 are parallel to the axis of the connecting pipe 4, which ensures that the main sliding ring 6 can smoothly slide on the long guide rods 5.

[0030] The short guide rods 7 are fixed in the main sliding ring 6, and the auxiliary sliding ring 8 is axially sleeved on the short guide rods 7 and driven by power, and the filter plate 9 is fixed on the auxiliary sliding ring 8.

[0031] The short guide rods 7 are fixed in the main sliding ring 6 by welding, and the auxiliary sliding ring 8 is axially sleeved on the short guide rods 7 and driven by power to move axially on the short guide rods 7, and the filter plate 9 is fixed on the auxiliary sliding ring 8 by welding and is firmly connected, which prevents the filter plate 9 from loosening or falling off during filtering and cleaning.

[0032] The long guide rods 5 are fixed with the top plate 13, the rear end of the top plate 13 abuts against the main and auxiliary sliding rings 8 and compresses the spring 10, and the long guide rods 5 are fixed with the top plate 13 by welding to ensure firm installation of the top plate 13.

[0033] The connecting pipe 4 is fixed with the mounting frame 14, the mounting frame 14 is used for supporting and fixing the electric telescopic rod 15, the output end of the electric telescopic rod 15 is installed with the intermediate plate 16, the connecting pipe 4 is provided with the sliding groove 17, the lower end of the intermediate plate 16 penetrates through the sliding groove 17 and is fixed with the upper end of the main sliding ring 6, which ensures that the power of the electric telescopic rod 15 can be effectively transmitted to the main sliding ring 6 to drive the main sliding ring 6 to move along the long guide rods 5.

[0034] The connecting pipe 4 is fixed with the sealing cover 18, the output end of the electric telescopic rod 15 and the intermediate plate 16 are covered in the sealing cover 18, which prevents foreign matters such as dust from entering from outside and prevents the gas in the connecting pipe 4 from overflowing outward, and the sealing cover 18 can be fixed on the connecting pipe 4 by welding to ensure good sealing performance.

[0035] When the electric telescopic rod 15 is extended, the main sliding ring 6 and the short guide rod 7 are moved forward, and the auxiliary sliding ring 8 is moved backward relative to the short guide rod 7 due to the blocking of the top plate 13. The rear end of the connecting pipe 4 is fixedly connected with a plurality of baffles 11, which provide impact positions for the backward movement of the auxiliary sliding ring 8, so that the impact force generated by the impact is effectively applied to the filter plate 9 to shake off the impurities on the filter plate 9.

[0036] In the retraction stage of the electric telescopic rod 15, the main sliding ring 6 and the short guide rod 7 move backward, and the compressed spring 10 releases the elastic potential energy to push the auxiliary sliding ring 8 to move forward along the short guide rod 7. The front end of the short guide rod 7 is fixedly connected with a baffle ring 12, which provides impact positions for the forward movement of the auxiliary sliding ring 8, so that the impact force generated by the impact is effectively applied to the filter plate 9 to shake off the impurities on the filter plate 9 again.

[0037] Working principle: when the pulse valve starts to work, the gas containing impurities from the industrial production system enters the entire device from the front end of the connecting pipe 4. These impurities may include dust, sand particles, metal debris and oil stains, which are the products of insufficient purification of gas in the industrial production environment;

[0038] After the gas enters the connecting pipe 4, the filter plate 9 in the auxiliary sliding ring 8 starts to filter. The filter plate 9 intercepts dust, sand particles and other impurities. The filter hole diameter of the filter plate 9 is smaller than the diameter of the sand particles and other impurities. The purified gas enters the valve body 1, reducing the damage of impurities to the internal components of the valve body 1.

[0039] When it is necessary to clean the filter plate 9 regularly, the electric telescopic rod 15 is connected through an external power source, and the electric telescopic rod 15 is equipped with a corresponding starting controller. At this time, the electric telescopic rod 15 is started, the output end of which pushes the intermediate plate 16, the lower end of which penetrates the sliding groove 17 to drive the main sliding ring 6, so that the main sliding ring 6 moves along the long guide rod 5 to the direction of the top plate 13. At this time, in the process of moving the main sliding ring 6, the top plate 13 will resist the auxiliary sliding ring 8 and make the auxiliary sliding ring 8 move in the direction of the spring 10 outside the short guide rod 7, and the spring 10 will be compressed.

[0040] The electric telescopic rod 15 continues to extend to push the main sliding ring 6 at a preset rapid quantitative stroke, and then drives the short guide rod 7 to move forward rapidly. Since the top plate 13 is fixed on the long guide rod 5, the auxiliary sliding ring 8 moves forward, and under the action of the top plate 13, it moves backward rapidly. In the process of moving the auxiliary sliding ring 8 backward, its speed is relatively fast, and it collides with the baffle 11 at the rear end. The impact force generated in the instant of impact is applied to the filter plate 9 installed in the auxiliary sliding ring 8. This impact force makes the impurities attached to the filter plate 9 vibrate. Those attached dust, particles and other impurities will be shaken off in this instant, achieving the effect of preliminary dust reduction and prevention of blockage.

[0041] After the auxiliary sliding ring 8 hits the baffle 11, the electric telescopic rod 15 quickly changes the motion state and starts to quickly retract to the original position, and the main sliding ring 6 and the short guide rod 7 are driven by the electric telescopic rod 15 to move backward synchronously. At this time, the compressed spring 10 releases the elastic potential energy and pushes the auxiliary sliding ring 8 to move forward quickly along the short guide rod 7. Under the elastic force of the spring 10 and the guiding action of the short guide rod 7, the auxiliary sliding ring 8 hits the stop ring 12 at the front end of the short guide rod 7. The impact force generated by the collision of the auxiliary sliding ring 8 and the stop ring 12 is transmitted to the filter plate 9 again, so that the filter plate 9 experiences vibration again. The dust, particles and other impurities on the filter plate 9 can be shaken off again, so that the filter plate 9 can be cleaned more thoroughly. Since the retracting speed of the electric telescopic rod 15 is faster than the release speed of the elastic potential energy of the spring 10, the speed and impact force of the auxiliary sliding ring 8 when hitting the stop ring 12 can be ensured to be large enough, so that the top plate 13 cannot hinder the auxiliary sliding ring 8 from hitting the stop ring 12 driven by the spring 10, thereby reducing the influence of the accumulation of impurities on the normal work of the pulse valve.

[0042] The above is only a preferred embodiment of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A pulse valve anti-blocking and automatic cleaning device, comprising a valve body (1), an air inlet (3) and a connecting pipe (4), the air inlet (3) is arranged at the front end of the valve body (1), and the connecting pipe (4) is installed at the front end of the air inlet (3), characterized in that: Also include long guide rod (5), main sliding ring (6), short guide rod (7) and auxiliary sliding ring (8), a plurality of long guide rod (5) is fixed in the connecting pipe (4), the main sliding ring (6) is axially sleeved on long guide rod (5), a plurality of short guide rod (7) is fixed in main sliding ring (6), the auxiliary sliding ring (8) is driven by power and axially sleeved on short guide rod (7), the auxiliary sliding ring (8) is fixed with filter plate (9), the short guide rod (7) rear end sleeve is provided with spring (10), the spring (10) front end is fixed on auxiliary sliding ring (8), ​ The long guide rod (5) is fixed with the top plate (13), the rear end of the top plate (13) is against the main auxiliary sliding ring (8) and makes the spring (10) compression.

2. The anti-clogging and self-cleaning device of the pulse valve according to claim 1, characterized in that: The connecting pipe (4) is fixed with the mounting frame (14), the mounting frame (14) is installed with electric telescopic rod (15), the output end of electric telescopic rod (15) is installed with intermediate plate (16), the connecting pipe (4) is equipped with sliding groove (17), the lower end of intermediate plate (16) penetrates through the sliding groove (17) and is fixed with the upper end of main sliding ring (6).

3. The anti-clogging and self-cleaning device of pulse valve according to claim 2, characterized in that: The connecting pipe (4) is fixed with sealing cover (18), the output end of electric telescopic rod (15) drives intermediate plate (16) to move in sealing cover (18) along the axial direction.

4. The anti-clogging and self-cleaning device of pulse valve according to claim 1, characterized in that: The spring (10) is used to make the auxiliary sliding ring (8) keep the tendency of moving to the front end.

5. The anti-clogging and self-cleaning device of pulse valve according to claim 1, characterized in that: The rear end of the connecting pipe (4) is fixed with a plurality of baffle (11), which is suitable for limiting the position of the auxiliary sliding ring (8) to move axially to the rear end.

6. The anti-clogging and self-cleaning device of pulse valve according to claim 1, characterized in that: The front end of the short guide rod (7) is fixed with the baffle ring (12), which is suitable for limiting the position of the auxiliary sliding ring (8) to move axially to the front end.

7. The anti-clogging and self-cleaning device of pulse valve according to claim 1, characterized in that: The lower end of the valve body (1) is provided with exhaust port (2).

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