Adjustable ventilation pipeline of biological fertilizer fermentation tank

Abstract

The utility model discloses an adjustable ventilating duct of a biological fertilizer fermentation tank, which belongs to the field of ventilating ducts and comprises a ventilating duct body connected with the biological fertilizer fermentation tank, an electric air valve and a fan are fixedly connected between the ventilating duct body, and the air inlet end of the ventilating duct body is fixedly connected with an air filter screen through a mounting mechanism. By means of the arranged installation mechanism, the purpose of conveniently disassembling and assembling the air filter screen on the ventilation pipeline body can be achieved, compared with a traditional installation mode, the installation mode is easy to operate, the time and labor for installation and disassembly are greatly saved, and the working efficiency is improved; the damage to threads at the air inlet end of the ventilation pipeline body caused by frequent disassembly of bolts and nuts is avoided, the problem that the installation stability and the sealing performance of the ventilation pipeline body are reduced due to thread damage is solved, the service life of the ventilation pipeline body is prolonged, and normal operation of the ventilation pipeline body is guaranteed; therefore, the normal work of the biological fertilizer fermentation tank is ensured.

Description

Technical Field

[0001] This utility model relates to the field of ventilation ducts, and in particular to an adjustable ventilation duct for a bio-fertilizer fermentation tank. Background Technology

[0002] A bio-fertilizer fermentation tank is a closed-loop fermentation device used to convert organic waste into bio-organic fertilizer. Its core function is to promote microbial metabolic activity by precisely controlling environmental parameters. The main body of the equipment consists of a stainless steel tank, a stirring device, a heating / cooling jacket, and adjustable ventilation ducts. The ventilation ducts work in conjunction with a variable frequency fan and an electric air valve to dynamically adjust the ventilation volume (0-500 m³ / h) and air velocity (0.5-15 m / s), ensuring that the dissolved oxygen level inside the tank remains stable above 8 mg / L. Simultaneously, data is fed back to the PLC control system in real time via a gas flow meter and a dissolved oxygen sensor. During fermentation, the ventilation ducts introduce filtered clean air into the bottom of the tank, which is then evenly dispersed into the organic material layer through microporous aeration discs, providing sufficient oxygen for aerobic microorganisms.

[0003] In existing technologies, the outside air contains a large number of microorganisms, such as bacteria, fungi, and viruses. If these microorganisms enter the fermentation tank with the air, they may compete with beneficial microorganisms inside the tank for nutrients, or even produce harmful metabolic products, affecting the normal fermentation of bio-fertilizer and reducing its quality and yield. Therefore, it is necessary to install air filters at the air inlet of the ventilation duct. Installing air filters can effectively filter out most microorganisms, ensuring a relatively pure microbial environment inside the fermentation tank, which is conducive to the growth and metabolism of beneficial microorganisms. However, most existing air filters are installed and fixed to the air inlet of the ventilation duct using bolts and nuts. This installation method has many drawbacks. On the one hand, when the air filter needs to be cleaned or replaced, the disassembly and installation of bolts and nuts is cumbersome and consumes a lot of time and manpower. On the other hand, frequent disassembly of bolts and nuts can easily damage the threads at the air inlet of the ventilation duct, affecting the installation stability of the air filter and the sealing of the ventilation duct, thereby affecting the normal operation of the fermentation tank. Utility Model Content

[0004] The main purpose of this invention is to provide an adjustable ventilation duct for a bio-fertilizer fermentation tank, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An adjustable ventilation duct for a bio-fertilizer fermentation tank includes a ventilation duct body connected to the bio-fertilizer fermentation tank, with an electric air valve and a fan fixedly connected between the ventilation duct bodies. An air filter is fixedly connected to the air inlet end of the ventilation duct body via an installation mechanism, which includes a fixing ring, fixing rods, a spring, a reset plate, a clamping plate, and a limiting plate. The fixing ring is fixedly connected inside the inlet end of the ventilation duct body, and two sets of symmetrical fixing rods are fixedly connected to the front wall of the fixing ring. The spring is sleeved on the outside of the fixing rods, and the reset plate is movably connected to the fixing rods through connecting holes on the outer side wall. The clamping plate is fixedly connected to the inner side wall of the reset plate, and the limiting plate is movably connected to symmetrical fixing blocks on the front wall of the reset plate via rotating rods on both sides.

[0007] Furthermore, a set of symmetrical positioning protrusions are fixedly installed on the outer wall of the air filter, and a set of symmetrical slots are opened on the outer wall of the air filter. A set of symmetrical limiting rods are also fixedly installed on the front wall of the air filter.

[0008] Furthermore, the fixing ring is fixedly installed inside the inlet end of the ventilation duct body, and the front wall of the fixing ring is provided with an installation groove that matches the air filter screen, and the inner wall of the installation groove is also provided with a positioning groove that corresponds to the positioning protrusion.

[0009] Furthermore, a set of symmetrical grooves are provided on the front wall of the fixing ring, and an opening communicating with the mounting groove is provided on the inner wall of the groove.

[0010] Furthermore, a set of symmetrical fixing rods are fixedly installed inside the groove, and a spring is sleeved on the outside of the fixing rods. A set of symmetrical connecting holes are opened on the outer wall of the reset plate, and the reset plate is movably installed together with the fixing rods through the connecting holes. The spring is also fixedly installed between the opposite walls of the groove and the reset plate, and the clamping plate is fixedly installed on the inner wall of the reset plate. The connecting hole passes through the clamping plate, and the clamping plate passes through the through-hole and is inserted into the clamping slot.

[0011] Furthermore, a set of symmetrical fixing blocks are fixedly installed on the front wall of the reset plate, and a rotating hole is provided on the side wall of the fixing block. Rotating rods are fixedly installed on both sides of the limiting plate, and the rotating rods are movably installed in the rotating holes. A limiting vertical hole is also provided on the front wall of the limiting plate, and the limiting rod is inserted into the limiting vertical hole.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] In this invention, the installation mechanism, when installing an air filter at the air inlet end of the ventilation duct body, uses the cooperation of the positioning protrusion and the positioning groove to position and install the air filter into the installation groove. Then, pulling the limiting plate causes the fixing block to move the reset plate through the connecting hole along the fixing rod in the groove, forcing the spring to extend until the locking plate passes through the opening and inserts into the locking slot. Next, the limiting plate is flipped so that the limiting rod is inserted into the limiting vertical hole, thereby restricting the reset plate and facilitating the quick installation and fixing of the air filter at the air inlet end of the ventilation duct body. Subsequently, when disassembling, cleaning, or replacing the air filter, the limiting plate is flipped in the opposite direction to move the limiting plate from... After the limit rod moves up and releases the restriction on the reset plate, it moves back to its original position under the elastic compression of the spring, causing the retaining plate to move out of the slot. This allows the air filter to be removed, facilitating its disassembly. Compared to traditional installation methods, this method is simpler, significantly saving time and manpower, improving work efficiency, and avoiding damage to the inlet threads of the ventilation duct body caused by frequent bolt and nut removal. This reduces the problems of decreased installation stability and sealing caused by thread damage to the ventilation duct body, extends the service life of the ventilation duct body, ensures the normal operation of the ventilation duct body, and thus guarantees the normal operation of the fermenter. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram showing the overall structure of this utility model broken down.

[0016] Figure 3 This is a schematic diagram of the overall structure of the installation mechanism of this utility model;

[0017] Figure 4 This is a schematic diagram of the overall structure of the air filter of this utility model;

[0018] Figure 5 This is a structural breakdown diagram of the installation mechanism of this utility model;

[0019] Figure 6 For the present utility model Figure 5 An enlarged schematic diagram of the structure at point A.

[0020] In the diagram: 1. Ventilation duct body; 2. Electric air valve; 3. Fan; 4. Air filter; 5. Installation mechanism; 6. Positioning protrusion; 7. Slot; 8. Limiting rod; 9. Fixing ring; 10. Installation slot; 11. Positioning slot; 12. Groove; 13. Through port; 14. Fixing rod; 15. Spring; 16. Reset plate; 17. Connecting hole; 18. Clamping plate; 19. Fixing block; 20. Rotating hole; 21. Limiting plate; 22. Rotating rod; 23. Limiting vertical hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1 - Figure 6 As shown, an adjustable ventilation duct for a bio-fertilizer fermentation tank includes a ventilation duct body 1 connected to the bio-fertilizer fermentation tank. An electric air valve 2 and a fan 3 are fixedly connected between the ventilation duct bodies 1. The ventilation volume and speed of the air inside the ventilation duct body 1 can be adjusted by the fan 3 and the electric air valve 2. An air filter 4 is fixedly connected to the air inlet end of the ventilation duct body 1 through an installation mechanism 5. The installation mechanism 5 includes a fixing ring 9, a fixing rod 14, a spring 15, a reset plate 16, a clamping plate 18, and a limiting plate 21. The fixing ring 9 is fixedly connected inside the inlet end of the ventilation duct body 1. Two sets of symmetrical fixing rods 14 are fixedly connected inside the front wall of the fixing ring 9. The spring 15 is sleeved on the outside of the fixing rods 14. The reset plate 16 is movably connected to the fixing rods 14 through a connecting hole 17 on the outer side wall. The clamping plate 18 is fixedly connected to the inner side wall of the reset plate 16. The limiting plate 21 is movably connected to symmetrical fixing blocks 19 on the front wall of the reset plate 16 through rotating rods 22 on both sides.

[0023] like Figure 4As shown, a set of symmetrical positioning protrusions 6 are fixedly installed on the outer wall of the air filter 4, and a set of symmetrical slots 7 are opened on the outer wall of the air filter 4. A set of symmetrical limiting rods 8 are also fixedly installed on the front wall of the air filter 4. The positioning protrusions 6 on the outer wall of the air filter 4 cooperate with the positioning grooves 11 on the fixing ring 9. The positioning protrusions 6 can ensure that the air filter 4 is accurately installed in the mounting grooves 10 of the fixing ring 9, playing a preliminary positioning role. At the same time, the slots 7 on the outer wall of the air filter 4 are used to cooperate with the clamping plate 18. The cooperation between the slots 7 and the clamping plate 18 can prevent the air filter 4 from moving freely in the ventilation duct, ensuring the accuracy and stability of the installation and achieving fixation. The limiting rods 8 cooperate with the limiting vertical holes 23 to restrict the limiting plate 21.

[0024] like Figure 5 As shown, the fixing ring 9 is fixedly installed inside the inlet end of the ventilation duct body 1, and the front wall of the fixing ring 9 is provided with an installation groove 10 that matches the air filter 4. The inner wall of the installation groove 10 is also provided with a positioning groove 11 that corresponds to the positioning protrusion 6. The fixing ring 9 is fixedly installed inside the inlet end of the ventilation duct body 1, and the installation groove 10 on its front wall is used to accommodate the air filter 4. The positioning groove 11 corresponds to the positioning protrusion 6 of the air filter 4.

[0025] like Figure 5 As shown, a set of symmetrical grooves 12 are provided on the front wall of the fixing ring 9, and an opening 13 communicating with the mounting groove 10 is provided on the inner wall of the groove 12. The groove 12 is used to install components such as the reset plate 16, and the opening 13 connects the mounting groove 10 and the groove 12 so that the card plate 18 can be inserted into the card slot 7.

[0026] like Figure 6 As shown, a set of symmetrical fixing rods 14 are fixedly installed inside the groove 12, and springs 15 are fitted on the outside of the fixing rods 14. A set of symmetrical connecting holes 17 are opened on the outer side wall of the reset plate 16, and the reset plate 16 is movably installed together with the fixing rods 14 through the connecting holes 17. Springs 15 are also fixedly installed between the opposite walls of the groove 12 and the reset plate 16, and a retaining plate 18 is fixedly installed on the inner side wall of the reset plate 16. The connecting hole 17 passes through the retaining plate 18, and the retaining plate 18 passes through the through hole 13 and is inserted into the retaining groove 7. When the reset plate 16 is pulled, it will move along the fixing rods 14 through the connecting hole 17 in the groove 12, and force the spring 15 to perform a tightening operation until the retaining plate 18 passes through the through hole 13 and is inserted into the retaining groove 7. In this way, the air filter 4 can be quickly installed and fixed.

[0027] like Figure 6As shown, a set of symmetrical fixing blocks 19 are fixedly installed on the front wall of the reset plate 16, and a rotating hole 20 is opened on the side wall of the fixing block 19. A rotating rod 22 is fixedly installed on both sides of the limiting plate 21, and the rotating rod 22 is movably installed in the rotating hole 20. A limiting vertical hole 23 is also opened on the front wall of the limiting plate 21, and the limiting rod 8 is inserted into the limiting vertical hole 23. After pulling the limiting plate 21, the limiting plate 21 is flipped, so that the rotating rod 22 rotates in the rotating hole 20. After the limiting rod 8 is forced to insert into the limiting vertical hole 23, the limiting plate 21 can be limited. By limiting the limiting plate 21, the reset plate 16 can be prevented from resetting under the elastic action of the spring 15, ensuring the effectiveness of the installation of the air filter 4. Conversely, after the limiting plate 21 is no longer restricted, the air filter 4 can be removed.

[0028] The specific operating principle of the adjustable ventilation duct of this bio-fertilizer fermentation tank is as follows:

[0029] Using the positioning protrusion 6 on the outer wall of the air filter 4, and in conjunction with the positioning groove 11 on the inner wall of the mounting groove 10, the air filter 4 is quickly positioned and installed into the mounting groove 10 on the fixing ring 9. Then, the limiting plate 21 is pulled inwards. The limiting plate 21, through the fixing block 19, causes the reset plate 16 to move inwards within the groove 12 on the front wall of the fixing ring 9. The reset plate 16 moves through the connecting hole 17 on the outer wall along the fixing rod 14 within the groove 12, forcing the spring 15 on the outside of the fixing rod 14 to extend until the retaining plate 18 installed on the inner wall of the reset plate 16 passes through the opening 13 and inserts into the retaining groove 7 on the outer wall of the air filter 4, preventing the limiting plate 21 from being pulled any further. Maintaining the pulling force on the limiting plate 21, the limiting plate 21 is flipped towards the limiting rod 8 installed on the front wall of the air filter 4. The rotating rods 22 on both sides of the limiting plate 21 will rotate within the rotating holes 20 opened on the side walls of the symmetrical fixing blocks 19 installed on the front wall of the reset plate 16. The limiting plate 21 is continuously flipped until the limiting rod 8 is forced into the limiting vertical hole 23 opened on the front wall of the limiting plate 21. Therefore, the limiting plate 21 can be restricted by the limiting rod 8, and the limiting plate 21 can indirectly restrict the reset plate 16 to prevent the reset plate 16 from recovering under the elastic compression force of the spring 15, causing the card plate 18 to move out of the card slot 7 and making it impossible to effectively install the air filter 4. The electric fan is turned on according to the actual use needs. Valve 2 controls the opening of the electric air valve 2 to control the air intake volume, and then the fan 3 is turned on to introduce outside air into the ventilation duct body 1. When the outside air enters the ventilation duct body 1, it can be effectively filtered by the air filter 4 installed at the air inlet of the ventilation duct body 1. The filtered air will be transported to the bio-fertilizer fermentation tank through the ventilation duct body 1 for use, so as to control and regulate the ventilation volume and speed when the air in the ventilation duct body 1 enters the bio-fertilizer fermentation tank. When the air filter 4 needs to be disassembled, cleaned or replaced after long-term use, the limit plate 21 is reversed and moved away from the limit rod 8. The elastic tightening force of the spring 15 will drive the reset plate 16 in the groove. 12 moves outward and resets, causing the retaining plate 18 to move out of the retaining groove 7 and pass through the through-hole 13 into the groove 12. Finally, the air filter 4 can be removed from the mounting groove 10 for cleaning or replacement. This facilitates the installation and removal of the air filter 4 on the ventilation duct body 1. Compared with traditional installation methods, this method is simple to operate, greatly saves installation and disassembly time and manpower, improves work efficiency, and avoids damage to the threads at the air inlet end of the ventilation duct body 1 caused by frequent disassembly of bolts and nuts. This reduces the problem of decreased installation stability and sealing caused by thread damage to the ventilation duct body 1, extends the service life of the ventilation duct body 1, and ensures the normal operation of the ventilation duct body 1.This, in turn, ensured the normal operation of the bio-fertilizer fermentation tank.

[0030] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A kind of adjustable ventilation duct of biofertilizer fermentation tank, including ventilation duct body (1) being connected with biofertilizer fermentation tank, and electric air valve (2) and fan (3) are fixedly connected between ventilation duct body (1), it is characterized in that: The air inlet end of the ventilation duct body (1) is fixedly connected with an air filter screen (4) through a mounting mechanism (5), and the mounting mechanism (5) comprises a fixing ring (9), fixing rods (14), springs (15), a reset plate (16), a clamping plate (18) and a limiting plate (21), the fixing ring (9) is fixedly connected in the air inlet end of the ventilation duct body (1), two groups of symmetrical fixing rods (14) are fixedly connected in the front end wall of the fixing ring (9), the springs (15) are sleeved outside the fixing rods (14), the reset plate (16) is movably connected with the fixing rods (14) through the connecting holes (17) in the outer side wall, the clamping plate (18) is fixedly connected to the inner side wall of the reset plate (16), and the limiting plate (21) is movably connected with the symmetrical fixing blocks (19) in the front wall of the reset plate (16) through the rotating rods (22) on the two sides.

2. The adjustable ventilation duct of a bio-fertilizer fermenter according to claim 1, wherein: A group of left-right symmetrical positioning protrusions (6) are fixedly installed on the outer wall of the air filter screen (4), a group of upper-lower symmetrical clamping grooves (7) are formed in the outer wall of the air filter screen (4), and a group of upper-lower symmetrical limiting rods (8) are fixedly installed on the front wall of the air filter screen (4).

3. The adjustable aeration duct of a bio-fertilizer fermenter according to claim 2, wherein: The fixing ring (9) is fixedly installed in the air inlet end of the ventilation duct body (1), and an installation groove (10) matched with the air filter screen (4) is formed in the front wall of the fixing ring (9).

4. The adjustable aeration duct of a bio-fertilizer fermenter according to claim 3, wherein: A group of upper-lower symmetrical grooves (12) are formed in the front wall of the fixing ring (9), and a through hole (13) in communication with the installation groove (10) is formed in the inner wall of the groove (12).

5. The adjustable aeration duct of a bio-fertilizer fermenter according to claim 4, wherein: A group of symmetrical fixing rods (14) are fixedly installed in the groove (12), and the springs (15) are sleeved outside the fixing rods (14), a group of symmetrical connecting holes (17) are formed in the outer side wall of the reset plate (16), the reset plate (16) is movably installed with the fixing rods (14) through the connecting holes (17), the springs (15) are also fixedly installed between the groove (12) and the opposite wall of the reset plate (16), the clamping plate (18) is fixedly installed on the inner side wall of the reset plate (16), the connecting holes (17) penetrate through the clamping plate (18), and the clamping plate (18) is inserted into the clamping groove (7) through the through hole (13).

6. The adjustable aeration duct of a bio-fertilizer fermenter according to claim 5, wherein: A group of left-right symmetrical fixing blocks (19) are fixedly installed on the front wall of the reset plate (16), and rotating holes (20) are formed in the side walls of the fixing blocks (19), rotating rods (22) are movably installed in the rotating holes (20), and the limiting plate (21) is movably installed with the symmetrical fixing blocks (19) in the front wall of the reset plate (16) through the rotating rods (22) on the two sides, and limiting vertical holes (23) are also formed in the front wall of the limiting plate (21), and the limiting rods (8) are inserted into the limiting vertical holes (23).

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