An automatic exhaust electric valve for monitoring indoor VOCs organic waste gas concentration

Abstract

The present invention discloses an automatic exhaust electric valve for monitoring indoor VOCs organic waste gas concentration, which relates to the technical field of electric valves, and includes: a valve body and a valve stem rotatably connected to the inner side of the valve body, the bottom of the valve stem is fixedly connected with a valve core, and the valve core is installed on the inner side of the valve body; a protection mechanism, located on the inner side of the valve body, for protecting the edge of the valve core when it is opened; a valve seat, the valve seat is fixedly connected to the inner side of the valve body, and the inner diameter of the valve seat matches the valve core, and the end of the valve seat is provided with a displacement protector for protecting the inner edge. The present invention provides a protection mechanism, and when the valve core is opened, the outer wall sealing ring of the valve core is shielded by two staggered sealing rings and two staggered sealing shells, so as to avoid a large amount of impurities accumulating on the outer wall sealing ring of the valve core when the valve core is in an open state, thereby ensuring the overall sealing after the valve core is closed.

Description

Technical Field

[0001] The invention relates to the technical field of electric valves, in particular to an automatic exhaust electric valve for monitoring indoor VOCs organic waste gas concentration. Background Art

[0002] Monitoring indoor VOCs organic waste gas concentration refers to real-time or periodic monitoring of the concentration of volatile organic compounds in indoor air through special equipment and technology. When the indoor VOCs organic waste gas concentration is detected to be too high, an electric valve is often required to open the indoor and external circulation channels for discharge, so as to ensure that the indoor VOCs organic waste gas concentration does not exceed the threshold.

[0003] The existing automatic exhaust electric valve for monitoring indoor VOCs organic waste gas concentration realizes the switching of the channel by opening and closing the valve core during use. However, after the valve core is opened, the indoor VOCs organic waste gas is discharged through the electric valve. The particles in the exhaust gas hit the sealing ring of the outer wall of the valve core and are easily accumulated on the sealing ring of the outer wall of the valve core. As a result, the valve core is easily incompletely closed after closing due to the influence of accumulated impurities, thereby affecting the sealing of the electric valve. For this reason, we provide an automatic exhaust electric valve for monitoring indoor VOCs organic waste gas concentration to solve the above problem. Summary of the invention

[0004] The purpose of the present invention is to provide an automatic exhaust electric valve for monitoring indoor VOCs organic waste gas concentration in order to solve the problem that particles in the exhaust gas discharge process are easily accumulated on the sealing ring of the outer wall of the valve core after the valve core of the electric valve is opened, thereby hindering the closing of the valve core.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic exhaust electric valve for monitoring the concentration of VOCs organic waste gas in a room, comprising: a valve body and a valve stem rotatably connected to the inner side of the valve body, a valve core fixedly connected to the bottom of the valve stem, and the valve core installed on the inner side of the valve body; a protection mechanism located on the inner side of the valve body, for protecting the edge of the valve core when it is opened; a valve seat, the valve seat is fixedly connected to the inner side of the valve body, and the inner diameter of the valve seat matches the valve core, and the end of the valve seat is provided with a displacement protector for protecting the inner edge; an auxiliary blowing member located at the end of the valve seat, for blowing and cleaning the inner side of the valve seat.

[0006] As a further solution of the present invention: the protection mechanism includes two fixed seats fixedly connected to the inside of the valve body, the bottom of the two fixed seats are fixedly connected to a sealing shell, one side of the two sealing shells is provided with a sealing ring, the top of one sealing ring is fixedly connected to a connecting seat, the top of the other sealing ring is fixedly connected to a bending rod, one end of the connecting seat is fixedly connected to a power rod, one end of the power rod is fixedly connected to a piston block, one end of the piston block and one end of the bending rod are fixedly connected to a spur rack, the inner side of the valve seat is rotatably connected to a spur gear meshing with the two spur racks, a micro hydraulic cylinder is installed on one side of one of the fixed seats, and the output end of the micro hydraulic cylinder passes through the outside of the fixed seat and is fixedly connected to the connecting seat.

[0007] As a further solution of the present invention: a sealing frame is fixedly connected to the end of the valve seat, and a groove matching the piston block is formed on the inner side of the sealing frame.

[0008] As a further solution of the present invention: the valve stem is composed of an arc ring and a raised blocking ring, and the two valve stems are staggered with respect to the central axis of the valve core.

[0009] As a further solution of the present invention: the displacement protector includes an auxiliary seat fixedly connected to the end of the valve seat, a cross bar is slidably connected to the inner side of the auxiliary seat, one end of the cross bar passes through the inner side of the auxiliary seat and is fixedly connected to a connecting plate, a blocking ring is fixedly connected to the bottom of the connecting plate, and a connecting spring is installed between the connecting plate and the auxiliary seat.

[0010] As a further solution of the present invention: the displacement protector also includes a roller rotatably connected to the end of the cross bar, a connecting rod is fixedly connected to one side of the connecting seat, a sliding rod is slidably connected to the inner side of the connecting rod, one end of the sliding rod is fixedly connected to a trapezoidal block, and an auxiliary spring is installed between the sliding rod and the connecting rod.

[0011] As a further solution of the present invention: the auxiliary blowing member includes an exhaust groove opened on the inner side of the blocking ring, the end of the valve seat is fixedly connected to an inflation ring, the air outlet of the inflation ring is fixedly connected to a hose, and one end of the hose passes through the blocking ring and extends to the inside of the exhaust groove.

[0012] As a further solution of the present invention: the auxiliary blowing part also includes a piston chamber opened inside the inflation ring, a piston ring is installed inside the piston chamber, one end of one of the spur racks is fixedly connected to a U-shaped block, and one end of the U-shaped block penetrates to the inner side of the inflation ring and is fixedly connected to the piston ring.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. By setting a protection mechanism, when the valve core is opened, the output end of the micro hydraulic cylinder drives the connecting seat to drive a sealing ring to move to the position of the outer sealing ring of the valve core that has not been covered. While the connecting seat moves, the power rod drives the spur rack to move, and then drives the spur gear to rotate. The rotation of the spur gear drives another spur rack to drive another sealing ring to move to the position of the outer sealing ring of the valve core that has not been covered through the bending rod. When the micro hydraulic cylinder stops running, the sealing ring of the outer wall of the valve core is covered by two staggered sealing rings and two staggered sealing shells, so as to avoid a large amount of impurities on the outer wall sealing ring of the valve core when the valve core is in an open state, thereby ensuring the overall sealing of the valve core after closing.

[0015] 2. By setting a displacement protector, when the connecting seat moves toward the valve seat, the trapezoidal block is driven to move synchronously through the connecting rod. When the inclined surface on one side of the trapezoidal block contacts the roller, the inclined surface pushes the cross bar to drive the blocking ring to move longitudinally through the connecting plate. When the trapezoidal block is against the valve seat, the blocking ring moves to the valve seat port, so that when the inside of the valve body is inlet from the left side of the blocking ring, the valve seat port can be blocked by the blocking ring, thereby reducing the contact between the valve seat port and the exhaust gas, avoiding the accumulation of impurities in the exhaust gas at the valve seat port, ensuring the sealing of the valve core after closing on the inside of the valve seat, and thus improving the overall practicality of the device;

[0016] 3. By setting an auxiliary blowing piece, when the power rod moves away from the valve seat, the U-shaped block will drive the piston ring to move away from the valve seat, thereby pushing the gas inside the inflation ring into the blocking ring through multiple hoses. During the resetting process of the power rod, when the power rod moves to the maximum position toward the valve seat, the auxiliary spring is in an extruded state, so that the blocking ring will stay at the valve seat port for a period of time during the resetting process of the power rod. During this period of time, the gas discharged through the exhaust groove inside the blocking ring is blown to the valve seat port, so that the impurities remaining in the valve seat port can be blown away, thereby further ensuring the sealing of the valve core after closing, thereby ensuring that the sealing ring can fit smoothly in place, avoiding incomplete resetting due to impurities stuck, and regularly cleaning the port by blowing, so that a high sealing performance can be maintained after the valve is closed, thereby improving the overall practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 is a cross-sectional view of the valve body of the present invention;

[0019] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 It is a schematic diagram of valve core protection of the present invention;

[0021] Figure 5 This is a schematic diagram of the valve core opening of the present invention;

[0022] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;

[0023] Figure 7 is a cross-sectional view of a valve seat of the present invention;

[0024] Figure 8 For the present invention Figure 7 Enlarged view of point C in the middle;

[0025] Fig. 9 It is a schematic diagram of the structure of the displacement protector of the present invention;

[0026] Fig.10 It is a schematic diagram of opening the sealing ring of the present invention;

[0027] Fig.11 It is a schematic diagram of the exhaust slot structure of the present invention.

[0028] In the figure: 1. valve body; 2. valve core; 3. valve stem; 4. sealing shell; 5. sealing ring; 6. valve seat; 7. inflation ring; 8. piston ring; 9. fixed seat; 10. micro hydraulic cylinder; 11. sealing frame; 12. power rod; 13. connecting seat; 14. connecting rod; 15. blocking ring; 16. hose; 17. auxiliary seat; 18. connecting plate; 19. connecting spring; 20. sliding rod; 21. piston block; 22. bending rod; 23. U-shaped block; 24. spur rack; 25. spur gear; 26. trapezoidal block; 27. cross bar; 28. roller; 29. ​​auxiliary spring; 30. exhaust slot. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0031] Example 1

[0032] See also Figures 1 to 11 The present embodiment provides an automatic exhaust electric valve for monitoring indoor VOCs organic waste gas concentration, comprising: a valve body 1 and a valve stem 3 rotatably connected to the inner side of the valve body 1, a valve core 2 is fixedly connected to the bottom of the valve stem 3, and the valve core 2 is installed on the inner side of the valve body 1; a protection mechanism is located on the inner side of the valve body 1 and is used to protect the edge of the open valve core 2; a valve seat 6, the valve seat 6 is fixedly connected to the inner side of the valve body 1, and the inner diameter of the valve seat 6 matches the valve core 2, the protection mechanism includes two fixed seats 9 fixedly connected to the inner side of the valve body 1, and the bottom of the two fixed seats 9 are fixedly connected to a sealing shell 4 , a sealing ring 5 is provided on one side of each of the two sealing shells 4, a connecting seat 13 is fixedly connected to the top of one sealing ring 5, a bending rod 22 is fixedly connected to the top of the other sealing ring 5, one end of the connecting seat 13 is fixedly connected to the power rod 12, one end of the power rod 12 is fixedly connected to the piston block 21, one end of the piston block 21 and one end of the bending rod 22 are fixedly connected to a spur rack 24, a spur gear 25 meshing with the two spur racks 24 is rotatably connected to the inner side of the valve seat 6, a micro hydraulic cylinder 10 is installed on one side of one of the fixed seats 9, the output end of the micro hydraulic cylinder 10 penetrates to the outside of the fixed seat 9 and is fixedly connected to the connecting seat 13, a sealing frame 11 is fixedly connected to the end of the valve seat 6, a groove matching the piston block 21 is provided on the inner side of the sealing frame 11, the valve stem 3 is composed of an arc ring and a raised blocking ring, and the two valve stems 3 are staggered with the central axis of the valve core 2;

[0033] First, when the concentration of VOCs organic waste gas in the monitored room is too high and needs to be discharged, the electric valve opens, so that the valve stem 3 drives the valve core 2 to rotate ninety degrees, so that the indoor environment is connected to the outside world to discharge VOCs organic waste gas. If automatic exhaust is required, an exhaust fan can be installed at the front end of the electric valve;

[0034] When the valve core 2 is opened, the particles in the VOCs organic waste gas are easily accumulated on the sealing ring of the outer wall of the valve core 2 during the emission process, which is easy to hinder its closing process. The accumulation of impurities may reduce the sealing between the sealing ring and the valve core, thereby causing gas leakage. Therefore, after the valve core 2 is opened, the valve core 2 rotates between the two sealing shells 4, and the left half of the sealing ring of the valve core 2 is covered by one sealing shell 4, and the right half of the sealing ring of the valve core 2 is covered by the other sealing shell 4. Then the micro hydraulic cylinder 10 is started, and the output end of the micro hydraulic cylinder 10 drives the connecting seat 13 to drive a sealing ring 5 to seal the outside of the valve core 2. When the sealing ring is not yet covered, the connecting seat 13 moves and the spur rack 24 is driven to move through the power rod 12, thereby driving the spur gear 25 to rotate. The spur gear 25 rotates to drive another spur rack 24 to drive another sealing ring 5 to move to the part of the outer side of the valve core 2 that is not yet covered by the sealing ring through the bending rod 22. When the micro hydraulic cylinder 10 stops running, the sealing ring of the outer wall of the valve core 2 is covered by two staggered sealing rings 5 ​​and two staggered sealing shells 4, so as to avoid a large amount of impurities on the sealing ring of the outer wall of the valve core 2 when the valve core 2 is in an open state, thereby ensuring the overall sealing of the valve core 2 after closing.

[0035] Example 2

[0036] The end of the valve seat 6 is provided with a displacement protector for protecting the inner edge, the displacement protector includes an auxiliary seat 17 fixedly connected to the end of the valve seat 6, a cross bar 27 is slidably connected to the inner side of the auxiliary seat 17, one end of the cross bar 27 penetrates to the inner side of the auxiliary seat 17 and is fixedly connected to a connecting plate 18, a blocking ring 15 is fixedly connected to the bottom of the connecting plate 18, a connecting spring 19 is installed between the connecting plate 18 and the auxiliary seat 17, the displacement protector also includes a roller 28 rotatably connected to the end of the cross bar 27, a connecting rod 14 is fixedly connected to one side of the connecting seat 13, a sliding rod 20 is slidably connected to the inner side of the connecting rod 14, a trapezoidal block 26 is fixedly connected to one end of the sliding rod 20, and an auxiliary spring 29 is installed between the sliding rod 20 and the connecting rod 14;

[0037] When the connecting seat 13 moves toward the valve seat 6, the connecting rod 14 drives the trapezoidal block 26 to move synchronously. When the inclined surface on one side of the trapezoidal block 26 contacts the roller 28, the inclined surface pushes the cross bar 27 to drive the blocking ring 15 to move longitudinally through the connecting plate 18. When the trapezoidal block 26 abuts against the valve seat 6, the blocking ring 15 moves to the port of the valve seat 6, so that during the process of air intake from the left side of the blocking ring 15 inside the valve body 1, the port of the valve seat 6 can be blocked by the blocking ring 15, thereby reducing the contact between the port of the valve seat 6 and the exhaust gas, avoiding the accumulation of impurities in the exhaust gas at the port of the valve seat 6, ensuring the sealing of the valve core 2 after closing on the inner side of the valve seat 6, and thus improving the overall practicality of the device;

[0038] When the trapezoidal block 26 abuts against the inner side of the valve seat 6 , the connecting rod 14 will continue to move laterally driven by the power rod 12 , thereby squeezing the auxiliary spring 29 .

[0039] Example 3

[0040] The auxiliary blowing member is located at the end of the valve seat 6 and is used for blowing and cleaning the inside of the valve seat 6. The auxiliary blowing member includes an exhaust groove 30 provided on the inside of the blocking ring 15. The end of the valve seat 6 is fixedly connected to the inflation ring 7. The air outlet of the inflation ring 7 is fixedly connected to a hose 16, and one end of the hose 16 penetrates the blocking ring 15 and extends to the inside of the exhaust groove 30. The auxiliary blowing member also includes a piston chamber provided in the inflation ring 7. A piston ring 8 is installed in the piston chamber, and one end of a spur rack 24 is fixedly connected to a U-shaped block 23, and one end of the U-shaped block 23 penetrates to the inside of the inflation ring 7 and is fixedly connected to the piston ring 8.

[0041] When the power rod 12 moves away from the valve seat 6, it will drive the piston ring 8 to move away from the valve seat 6 through the U-shaped block 23, thereby pushing the internal gas of the inflation ring 7 into the blocking ring 15 through multiple hoses 16. During the resetting process of the power rod 12, since the power rod 12 moves to the maximum position toward the valve seat 6, the auxiliary spring 29 is in an extruded state at this time, so that the blocking ring 15 of the power rod 12 will stay at the port position of the valve seat 6 for a period of time during the resetting process. During this period of time, the gas discharged through the exhaust groove 30 inside the blocking ring 15 is blown to the port of the valve seat 6, so that the impurities remaining at the port of the valve seat 6 can be blown away, thereby further ensuring the sealing of the valve core 2 after closing, thereby ensuring that the sealing ring can fit smoothly into place, avoiding incomplete resetting due to impurities stuck, and regularly cleaning the port by blowing, so that a high sealing performance can be maintained after the valve is closed, thereby improving the overall practicality of the device.

[0042] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic exhaust electric valve for monitoring indoor VOCs organic waste gas concentration, characterized in that: include: A valve body (1) and a valve stem (3) rotatably connected to the inner side of the valve body (1), a valve core (2) being fixedly connected to the bottom of the valve stem (3), and the valve core (2) being mounted on the inner side of the valve body (1); A protection mechanism, located on the inner side of the valve body (1), and used for protecting the edge of the valve core (2) when it is opened; A valve seat (6), the valve seat (6) being fixedly connected to the inner side of the valve body (1), the inner diameter of the valve seat (6) matching that of the valve core (2), and the end of the valve seat (6) being provided with a displacement protector for protecting the inner edge; An auxiliary blowing member, located at the end of the valve seat (6) and used for blowing and cleaning the inside of the valve seat (6); The protection mechanism comprises two fixed seats (9) fixedly connected to the inner side of the valve body (1), the bottom of the two fixed seats (9) are fixedly connected to a sealing shell (4), one side of the two sealing shells (4) is provided with a sealing ring (5), the top of one of the sealing rings (5) is fixedly connected to a connecting seat (13), the top of the other sealing ring (5) is fixedly connected to a bending rod (22), one end of the connecting seat (13) is fixedly connected to a power rod (12), one end of the power rod (12) is fixedly connected to a piston block (21), one end of the piston block (21) and one end of the bending rod (22) are fixedly connected to a spur gear (24), the inner side of the valve seat (6) is rotatably connected to a spur gear (25) meshing with the two spur gears (24), one side of one of the fixed seats (9) is installed with a micro hydraulic cylinder (10), the output end of the micro hydraulic cylinder (10) passes through the outside of the fixed seat (9) and is fixedly connected to the connecting seat (13); The displacement protector comprises an auxiliary seat (17) fixedly connected to the end of the valve seat (6), a cross bar (27) being slidably connected to the inner side of the auxiliary seat (17), one end of the cross bar (27) passing through the inner side of the auxiliary seat (17) and being fixedly connected to a connecting plate (18), a blocking ring (15) being fixedly connected to the bottom of the connecting plate (18), and a connecting spring (19) being installed between the connecting plate (18) and the auxiliary seat (17); The displacement protector further comprises a roller (28) rotatably connected to the end of the crossbar (27); a connecting rod (14) is fixedly connected to one side of the connecting seat (13); a sliding rod (20) is slidably connected to the inner side of the connecting rod (14); a trapezoidal block (26) is fixedly connected to one end of the sliding rod (20); and an auxiliary spring (29) is installed between the sliding rod (20) and the connecting rod (14); The auxiliary blowing member comprises an exhaust groove (30) formed on the inner side of the blocking ring (15); an end of the valve seat (6) is fixedly connected to an inflation ring (7); a hose (16) is fixedly connected to the air outlet of the inflation ring (7); and one end of the hose (16) passes through the blocking ring (15) and extends to the inside of the exhaust groove (30); The auxiliary blowing member also includes a piston chamber opened inside the inflation ring (7), a piston ring (8) being installed inside the piston chamber, one end of one of the spur racks (24) being fixedly connected to a U-shaped block (23), and one end of the U-shaped block (23) passing through the inner side of the inflation ring (7) and being fixedly connected to the piston ring (8).

2. According to claim 1, an automatic exhaust electric valve for monitoring indoor VOCs organic waste gas concentration is characterized in that: The end of the valve seat (6) is fixedly connected to a sealing frame (11), and a groove matching the piston block (21) is provided on the inner side of the sealing frame (11).

3. According to claim 1, an automatic exhaust electric valve for monitoring indoor VOCs organic waste gas concentration is characterized in that: The valve stem (3) is composed of an arc-shaped ring and a raised blocking ring, and the two valve stems (3) are arranged in a staggered manner with respect to the central axis of the valve core (2).

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