Check valve for discharging dust

Abstract

The utility model belongs to the technical field of check valves, and particularly relates to a check valve for dust discharge, which comprises a valve body and a connecting plate, the connecting plate is fixedly mounted on one side of the valve body, a plurality of blades are sleeved in the valve body, two trapezoidal grooves are arranged on the inner wall of the valve body, one end of each trapezoidal groove is fixedly connected with a dustproof brush, and the other end of each trapezoidal groove is fixedly connected with a dust removal brush. The inner wall of each trapezoidal groove is slidably connected with a trapezoidal block, the two sides of each trapezoidal block are slidably connected with the inner side of a dustproof brush, and a push plate is fixedly connected between the two trapezoidal blocks. The situation that the multiple blades swing in the dust discharging process is prevented through a push plate, the opening angles of the blades can be adjusted, the situation that a trapezoidal block is blocked in the sliding process can be prevented through a dustproof brush, the multiple blades are pushed through the push plate, the multiple blades are closed together, and the dust discharging effect is improved. The blades can be stably attached to the inner wall of the valve body, and the situation that dust flows back is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of check valves, in particular to a check valve used for dust removal. Background Art

[0002] A butterfly check valve is a valve body that automatically opens and closes the valve disc by the flow of the medium itself to prevent the medium from flowing back. It is also called a non-return valve, a one-way valve, a reverse flow valve and a back pressure valve. A check valve is an automatic valve body. Its main function is to prevent the medium from flowing back, to prevent the pump and the drive motor from reversing, and to release the container medium. The check valve can also be used on the pipeline to provide supply to the auxiliary system where the pressure may rise to exceed the system pressure.

[0003] Duct check valves are usually composed of springs and valve discs. The valve disc is a key component of the valve body, which opens and closes according to the direction of the airflow. Usually, this type of valve body works automatically. Under the pressure of the fluid flowing in one direction, the valve disc opens; when the fluid flows in the opposite direction, the fluid pressure and the self-recognition of the valve disc act on the valve seat, thereby cutting off the flow. When the airflow direction in the duct is reversed, the mechanical device in the valve body will quickly close the valve body to prevent the reverse flow of the airflow.

[0004] In the current existing technology, the traditional check valve used for dust exhaust needs to be installed on the dust exhaust pipe. During operation, when the fan stops, the blades fall down due to their own weight, and the valve body is closed to prevent the airflow from flowing back. When the valve body of this check valve is closed, the blades may not be closed tightly, causing the dust gas to flow back, which will reduce the dust exhaust efficiency and affect the efficiency of the check valve.

[0005] Therefore, in view of the above problem, a check valve for dust exhaust is proposed. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned problems, a check valve for dust exhaust is proposed.

[0007] The technical solution adopted by the utility model to solve its technical problem is: the utility model comprises a check valve for dust exhaust, comprising a valve body and a connecting plate, the connecting plate is fixedly installed on one side of the valve body, a plurality of blades are sleeved inside the valve body, two trapezoidal grooves are provided on the inner wall of the valve body, and the two trapezoidal grooves are symmetrically arranged, one end of each of the trapezoidal grooves is fixedly connected to a dust-proof brush, the inner wall of each of the trapezoidal grooves is slidably connected to a trapezoidal block, both sides of each of the trapezoidal blocks are slidably connected to the inner side of the dust-proof brush, a push plate is fixedly connected between the two trapezoidal blocks, the push plate slides inside the valve body via the trapezoidal block, and one side of the push plate is in contact with one side of the plurality of blades.

[0008] Preferably, one side of the blades at both ends are fixedly connected with a positioning rod, and both ends of the positioning rod are rotatably connected to the inner wall of the valve body. One side of the two middle blades are fixedly connected with a plurality of fixed sleeve rods, and the interiors of the plurality of fixed sleeve rods are rotatably connected with connecting rods, and both ends of the connecting rods are rotatably connected to the inner wall of the valve body.

[0009] Preferably, one side of the two middle blades is provided with a slot, and one side of the slot is engaged with one side of the positioning rod through the blade.

[0010] Preferably, two limit blocks are fixedly connected to the inner wall of one end of the valve body, and one side of each limit block is in contact with one side of the blade.

[0011] Preferably, both ends of the valve body are fixedly connected with a fixing box, the interior of each of the fixing boxes is fixedly connected with a driving motor, the output shaft of each driving motor is fixedly connected with a first gear, and each of the first gears rotates on the inner wall of the valve body through the driving motor.

[0012] Preferably, one side of each of the first gears is meshedly connected with a second gear, and a threaded rod is fixedly connected inside each of the second gears. Both ends of the threaded rod are rotatably connected to the inner wall of the valve body, the middle part of each threaded rod is threadedly connected to the inner wall of the trapezoidal block, and each of the trapezoidal blocks slides inside the trapezoidal groove through the threaded rod.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides a check valve for dust removal, which prevents multiple blades from swinging during dust removal by fitting a push plate to one side of a blade, and adjusts the opening angle of the blade by sliding a trapezoidal block inside a trapezoidal groove, and prevents the trapezoidal block from clogging during sliding by using a dust-proof brush. The push plate pushes multiple blades so that the multiple blades are closed together, so that the blades can stably fit with the inner wall of the valve body, reducing the backflow of dust and improving the dust removal efficiency and use efficiency of the check valve.

[0015] The utility model provides a check valve for dust removal, which starts two driving motors at the same time, uses the output shaft of the driving motor to drive the first gear to rotate, and then uses the meshing of the first gear and the second gear to make the second gear drive the threaded rod to rotate. Then, by using the connection between the threaded rod and the trapezoidal block, the threaded rod drives the trapezoidal block to slide inside the trapezoidal groove when rotating. Then, the push plate is driven to fit on one side of the blade, preventing the blade from opening when closing, thereby improving the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a three-dimensional diagram of the valve body in the utility model;

[0019] Figure 3 It is a cross-sectional view of the valve body in the utility model;

[0020] Figure 4 It is a three-dimensional diagram of the blade in the utility model;

[0021] Figure 5 It is a three-dimensional diagram of the push plate in the utility model;

[0022] Legend:

[0023] 1. Valve body; 2. Connecting plate; 3. Blade; 31. Fixed sleeve rod; 32. Connecting rod; 33. Slot; 4. Positioning rod; 5. Limit block; 6. Push plate; 61. Trapezoidal block; 7. Trapezoidal groove; 71. Dust-proof brush; 8. Fixed box; 9. Drive motor; 10. First gear; 11. Second gear; 12. Threaded rod. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Specific examples are given below.

[0026] See also Figure 1 - Figure 5The utility model provides a check valve for dust removal, including a valve body 1 and a connecting plate 2. The connecting plate 2 is fixedly mounted on one side of the valve body 1, and a plurality of blades 3 are sleeved inside the valve body 1. Two trapezoidal grooves 7 are provided on the inner wall of the valve body 1, and the two trapezoidal grooves 7 are symmetrically arranged. One end of each trapezoidal groove 7 is fixedly connected to a dust-proof brush 71, and the inner wall of each trapezoidal groove 7 is slidably connected to a trapezoidal block 61, and both sides of each trapezoidal block 61 are slidably connected to the inner side of the dust-proof brush 71. A push plate 6 is fixedly connected between the two trapezoidal blocks 61, and the push plate 6 slides inside the valve body 1 through the trapezoidal block 61. One side of the push plate 6 fits with one side of the plurality of blades 3, and two limit blocks 5 are fixedly connected to the inner wall of one end of the valve body 1, and one side of each limit block 5 fits with one side of the blade 3.

[0027] During operation, the connecting plate 2 is attached to the dust exhaust pipe, and then the valve body 1 is fixed to the dust exhaust pipe with bolts. When dust needs to be discharged, after the fan is started, multiple blades 3 are automatically opened under the push of wind, so that the dust passes through the valve body 1 and is then discharged. The two trapezoidal blocks 61 are used to ensure the stability of the push plate 6, and the fit between the push plate 6 and one side of the blade 3 is used to prevent multiple blades 3 from swinging during the dust discharge process, thereby increasing the service life of the blade 3. The opening angle of the blade 3 can be adjusted by sliding the trapezoidal block 61 inside the trapezoidal groove 7, and the dust-proof brush 71 is connected to the trapezoidal block 61 to reduce the dust from entering the trapezoidal groove 7 and prevent the trapezoidal block 61 from being blocked during the sliding process. When the fan stops, the push plate 6 is used to push the multiple blades 3 so that the multiple blades 3 are closed together, and then the two limit blocks 5 are fitted with the blades 3 so that the blades 3 can be stably fitted with the inner wall of the valve body 1, thereby reducing the backflow of dust and improving the dust removal efficiency and use efficiency of the check valve.

[0028] Further, such as Figure 3 and Figure 4 As shown, one side of the blades 3 at both ends is fixedly connected to a positioning rod 4, and both ends of the positioning rod 4 are rotatably connected to the inner wall of the valve body 1. One side of the two middle blades 3 is fixedly connected to a plurality of fixed sleeve rods 31, and the interior of the plurality of fixed sleeve rods 31 is rotatably connected to a connecting rod 32, and both ends of the connecting rod 32 are rotatably connected to the inner wall of the valve body 1. One side of the two middle blades 3 is provided with a clamping groove 33, and one side of the clamping groove 33 is clamped with one side of the positioning rod 4 through the blade 3.

[0029] During operation, the positioning rod 4 allows the blades 3 at both ends to stably rotate inside the valve body 1, and then the connection between the fixed sleeve rod 31 and the connecting rod 32 is used to connect the two blades 3 in the middle to ensure the stability of the structure. When multiple blades 3 need to be closed, the push plate 6 is used to push one side of the multiple blades 3 so that the groove 33 at one end of the middle blade 3 is engaged with the outer wall of the positioning rod 4, and one side of the blades 3 at both ends is in contact with the limit block 5. The above method allows multiple blades 3 to fit together, preventing dust gas reflux when the blades 3 are closed, thereby improving the use efficiency of the check valve.

[0030] Further, such as Figure 5 As shown, both ends of the valve body 1 are fixedly connected with a fixing box 8, the interior of each fixing box 8 is fixedly connected with a driving motor 9, the output shaft of each driving motor 9 is fixedly connected with a first gear 10, and each first gear 10 rotates on the inner wall of the valve body 1 through the driving motor 9. One side of each first gear 10 is meshed with a second gear 11, and the interior of each second gear 11 is fixedly connected with a threaded rod 12, both ends of the threaded rod 12 are rotatably connected with the inner wall of the valve body 1, the middle part of each threaded rod 12 is threadedly connected with the inner wall of the trapezoidal block 61, and each trapezoidal block 61 slides inside the trapezoidal groove 7 through the threaded rod 12.

[0031] During operation, when the blade 3 needs to be closed, the fixing box 8 fixed at both ends of the valve body 1 is used to ensure the stability of the drive motor 9, and then the two drive motors 9 are started at the same time, and the output shaft of the drive motor 9 is used to drive the first gear 10 to rotate, and then the meshing of the first gear 10 and the second gear 11 is used to make the second gear 11 rotate, and then drive the threaded rod 12 to rotate, and the threaded rod 12 is connected to the inside of the valve body 1 to ensure the stability of the threaded rod 12. Then, the threaded rod 12 is connected to the trapezoidal block 61, so that the threaded rod 12 drives the trapezoidal block 61 to slide inside the trapezoidal groove 7 when rotating. Then, the push plate 6 is driven to fit on one side of the blade 3 to prevent the blade 3 from opening when closing, prevent dust backflow, and increase the service life of the device.

[0032] Working principle: by fitting the connecting plate 2 to the dust exhaust pipe, and then fixing the valve body 1 to the dust exhaust pipe with bolts. When dust needs to be discharged, start the two drive motors 9 at the same time, use the output shaft of the drive motor 9 to drive the first gear 10 to rotate, so that the second gear 11 drives the threaded rod 12 to rotate, and then the threaded rod 12 drives the trapezoidal block 61 to slide inside the trapezoidal groove 7 when rotating, so that one side of the push plate 6 is separated from the blade 3. Then start the fan, and multiple blades 3 are automatically opened under the push of wind, so that the dust passes through the valve body 1 and is then discharged. The fit between the push plate 6 and one side of the blade 3 is used to prevent multiple blades 3 from swinging during the dust discharge process. The opening angle of the blade 3 can be adjusted by sliding the trapezoidal block 61 inside the trapezoidal groove 7, and the dust-proof brush 71 can be used to reduce the dust from entering the interior of the trapezoidal groove 7. When the fan stops, the push plate 6 is used to push the multiple blades 3 so that the multiple blades 3 are closed together, and then the two limit blocks 5 are fitted with the blades 3 so that the blades 3 can be stably fitted with the inner wall of the valve body 1, thereby completing the closing work of the valve body 1.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A check valve for dust removal, comprising a valve body (1) and a connecting plate (2), characterized in that: The connecting plate (2) is fixedly mounted on one side of the valve body (1); a plurality of blades (3) are sleeved inside the valve body (1); two trapezoidal grooves (7) are provided on the inner wall of the valve body (1); and the two trapezoidal grooves (7) are symmetrically arranged; one end of each trapezoidal groove (7) is fixedly connected to a dustproof brush (71); the inner wall of each trapezoidal groove (7) is slidably connected to a trapezoidal block (61); both sides of each trapezoidal block (61) are slidably connected to the inner side of the dustproof brush (71); a push plate (6) is fixedly connected between the two trapezoidal blocks (61); the push plate (6) slides inside the valve body (1) via the trapezoidal block (61); and one side of the push plate (6) is in contact with one side of the plurality of blades (3).

2. A check valve for dust removal according to claim 1, characterized in that: One side of the blades (3) at both ends is fixedly connected to a positioning rod (4), and both ends of the positioning rod (4) are rotatably connected to the inner wall of the valve body (1). One side of the two blades (3) in the middle is fixedly connected to a plurality of fixed sleeve rods (31), and the interiors of the plurality of fixed sleeve rods (31) are rotatably connected to connecting rods (32), and both ends of the connecting rods (32) are rotatably connected to the inner wall of the valve body (1).

3. A check valve for dust removal according to claim 1, characterized in that: One side of the two middle blades (3) is provided with a clamping groove (33), and one side of the clamping groove (33) is clamped with one side of the positioning rod (4) through the blade (3).

4. A check valve for dust removal according to claim 1, characterized in that: Two limit blocks (5) are fixedly connected to the inner wall of one end of the valve body (1), and one side of each limit block (5) is in contact with one side of the blade (3).

5. A check valve for dust removal according to claim 1, characterized in that: Both ends of the valve body (1) are fixedly connected to a fixing box (8), the interior of each fixing box (8) is fixedly connected to a driving motor (9), the output shaft of each driving motor (9) is fixedly connected to a first gear (10), and each first gear (10) rotates on the inner wall of the valve body (1) via the driving motor (9).

6. A check valve for dust removal according to claim 5, characterized in that: One side of each of the first gears (10) is meshedly connected to a second gear (11), and a threaded rod (12) is fixedly connected inside each of the second gears (11). Both ends of the threaded rod (12) are rotatably connected to the inner wall of the valve body (1), and the middle part of each of the threaded rods (12) is threadedly connected to the inner wall of the trapezoidal block (61), and each of the trapezoidal blocks (61) slides inside the trapezoidal groove (7) via the threaded rod (12).

Images