Gas flow control device

Abstract

The utility model relates to the technical field of valves, in particular to a gas flow control device, which is characterized in that two flange heads are symmetrically fixed on a front side plate and a rear side plate of a shell in a penetrating manner after modification, an outer bushing is movably arranged in the shell, and the outer side wall of the outer bushing is movably propped against the inner side wall of the shell; outer air guide ports are formed in the walls of the two opposite sides of the outer lining, the inner lining is movably arranged in the outer lining, the outer side wall of the inner lining movably abuts against the inner side wall of the outer lining, inner air guide ports are formed in the walls of the two opposite sides of the inner lining, and the supporting sleeve is fixedly arranged on the upper side wall of the outer lining. The supporting shaft is fixedly arranged on the upper side wall of the neck bush and movably arranged on the supporting sleeve in a penetrating mode. The two adjusting structures opposite in rotating direction and the port structures opposite in rotating direction are arranged, so that the size of the ventilation opening is adjusted to adjust the gas flux, gas flows in the axis position when flowing through, and erosion to the inner wall of the valve body is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a gas flow control device. Background Art

[0002] There is a gas throttle valve that currently has a valve core that moves laterally and a movable adjustment structure arranged in the valve body. The size of the vent that the valve core and the valve body cooperate with can be adjusted by adjusting the position of the valve core, thereby adjusting the size of the gas flux. However, since the valve core of this structure moves from one side of the valve body to the other side, it causes deviation when the gas flows through. When the gas passes through the vent, it first deviates to one side and then resets and is discharged, which makes it easy for vortexes to occur and causes extremely serious erosion on one side wall of the valve body. Therefore, it is necessary to improve the valve of this structure. Utility Model Content

[0003] The purpose of the present utility model is to address the defects and shortcomings of the existing technology and provide a gas flow control device, which is provided with two adjustment structures with opposite rotation directions and port structures with opposite rotation directions, so as to adjust the size of the vent to adjust the gas flux, and the gas flows in an axial position when flowing through, reducing erosion on the inner wall of the valve body.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] It includes a shell and a flange head, wherein the flange heads are two and are symmetrically fixed on the front and rear side plates of the shell after modification. It also includes:

[0006] An outer bushing, wherein the outer bushing is movably arranged inside the shell, and the outer side wall of the outer bushing is movably abutted against the inner side wall of the shell, and outer air guide ports are opened on the walls on opposite sides of the outer bushing;

[0007] An inner sleeve, wherein the inner sleeve is movably arranged inside the outer sleeve, and the outer side wall of the inner sleeve is movably abutted against the inner side wall of the outer sleeve, and inner air guide ports are opened on the walls on opposite sides of the inner sleeve;

[0008] A support sleeve, wherein the support sleeve is fixedly arranged on the upper side wall of the outer sleeve;

[0009] The support shaft is fixedly arranged on the upper side wall of the inner sleeve, and the support shaft is movably inserted into the support sleeve.

[0010] Preferably, a driving shaft is provided on each side of the support sleeve, and a driving gear is provided on each of the two driving shafts. The two driving gears are meshed with each other. A main gear is fixed on the support sleeve, and a secondary gear is fixed on the support shaft. Driven gears are fixed on the two driving shafts, and the driven gear on one of the driving shafts is meshed with the main gear, and the driven gear on the other driving shaft is meshed with the secondary gear.

[0011] Preferably, a lower partition is fixedly provided on the inner wall of the shell, the support sleeve is screwed through the lower partition through a bearing, an upper partition is fixedly provided on the inner wall of the shell, the upper end of the support shaft is screwed on the upper partition, and the drive shaft is screwed through the upper partition through a bearing.

[0012] Preferably, a connecting ring is fixedly provided on the upper end of the one driving shaft, and a handle is movably inserted into the connecting ring.

[0013] Preferably, a limit seat is fixedly provided on the upper end of the other driving shaft, a limit ring is movably provided on the limit seat, a clamping block is fixedly provided on the limit seat, a limit block is fixedly provided on the limit ring, the clamping block and the limit block are cooperated, a limit frame is fixedly provided on the top plate of the outer shell, the limit frame is movably opened on the limit ring, and the limit frame and the limit block are cooperated.

[0014] Preferably, a deflector is fixedly provided inside the inner sleeve.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] It is provided with two adjustment structures with opposite rotation directions and port structures with opposite rotation directions, so as to adjust the size of the vent to adjust the gas flux, and the gas flows in the axial position when flowing through, reducing the erosion of the inner wall of the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2 It is a structural diagram of the outer shell and outer bushing in the utility model.

[0019] Figure 3 It is a structural diagram of the outer shell and inner liner in the utility model.

[0020] Figure 4 It is a schematic diagram of the structure of the outer and inner bushings in the utility model.

[0021] Description of reference numerals:

[0022] Shell 1, flange head 2, outer bushing 3, outer air guide port 4, inner bushing 5, inner air guide port 6, support sleeve 7, support shaft 8, drive shaft 9, driving gear 10, main gear 11, sub gear 12, driven gear 13, lower partition 14, upper partition 15, connecting ring 16, handle 17, limit seat 18, limit ring 19, clamping block 20, limit block 21, limit frame 22, and air deflector 23. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. The preferred embodiments in the description are only used as examples. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

[0024] like Figure 1-4 As shown, this specific implementation adopts the following technical solutions:

[0025] It comprises a shell 1 and a flange head 2, wherein the flange heads 2 are two and are symmetrically arranged and fixed on the front and rear side plates of the shell 1 after modification;

[0026] The upper partition 15 and the lower partition 14 are fixedly arranged on the inner wall of the shell 1, and the lower partition 14 is arranged below the upper partition 15 and above the flange head 2;

[0027] The outer bushing 3 is movably arranged inside the shell 1, and the outer wall of the outer bushing 3 is movably abutted against the inner wall of the shell 1, and the top plate of the outer bushing 3 is movably abutted against the lower surface of the lower partition 14. External air guide ports 4 are opened on the walls on opposite sides of the outer bushing 3, and the external air guide ports 4 on both sides are cooperated with the two flange heads 2;

[0028] An inner sleeve 5 is movably arranged inside the outer sleeve 3, and the outer side wall of the inner sleeve 5 is movably abutted against the inner side wall of the outer sleeve 3. Inner air guide ports 6 are provided on the walls on opposite sides of the inner sleeve 5, and the inner air guide ports 6 are arranged in coordination with the outer air guide ports 4;

[0029] The support sleeve 7 is fixedly arranged on the upper side wall of the outer bushing 3, and the support sleeve 7 is screwed through the lower partition 14 through the bearing;

[0030] The support shaft 8 is fixedly mounted on the upper side wall of the inner sleeve 5, and the support shaft 8 is movably inserted into the support sleeve 7, and the upper end of the support shaft 8 is screwed onto the lower side wall of the upper partition 15 through a bearing;

[0031] Drive shaft 9, there are two drive shafts 9, and the drive shafts 9 are arranged on both sides of the support sleeve 7, the lower ends of the drive shafts 9 are screwed on the lower partition 14 through bearings, and the drive shafts 9 are respectively screwed on the upper partition 15 and the top plate of the shell 1 through bearings;

[0032] A driving gear 10, wherein the driving gear 10 is fixedly mounted on the drive shaft 9 and disposed between the upper partition plate 15 and the top plate of the housing 1, and the two driving gears 10 are meshed with each other;

[0033] A driven gear 13, wherein the driven gear 13 is fixedly disposed on the drive shaft 9;

[0034] A main gear 11 is sleeved and fixed on the support sleeve 7, and the main gear 11 is meshed with one of the driven gears 13;

[0035] A secondary gear 12, wherein the secondary gear 12 is fixedly mounted on the support shaft 8 and is meshed with another driven gear 13;

[0036] A connecting ring 16, wherein the Hood connecting ring 16 is fixedly arranged at the upper end of one of the drive shafts 9;

[0037] A limiting seat 18, wherein the limiting seat 18 is fixedly disposed on the upper end of the other driving shaft 9;

[0038] A handle 17, wherein the handle 17 is movably inserted into the connecting ring 16;

[0039] The limiting ring 19 is sleeved on the limiting seat 18 through a bearing screw connection;

[0040] The clamping block 20 is fixedly arranged on the limiting seat 18;

[0041] The limit block 21 is fixedly arranged on the limit ring 19, and the clamping block 20 is arranged in cooperation with the limit block 21;

[0042] The limiting frame 22 is fixedly provided on the top plate of the housing 1, the limiting frame 22 is movably mounted on the limiting ring 19, and the limiting frame 22 is provided in cooperation with the limiting block 21;

[0043] The air guide cover 23 is fixedly arranged on the inner wall of the inner sleeve 5.

[0044] When using this device, a driving shaft 9 is rotated through the handle 17, so that the two driving shafts 9 are transmitted through the driving gear 10, so that the two driving shafts 9 have the same speed and opposite direction. One of the driving shafts 9 drives the support sleeve 7 to rotate through the meshing driven gear 13 and the main gear 11, and the other driving shaft 9 drives the support shaft 8 to rotate through the meshing driven gear 13 and the secondary gear 12, so that the support sleeve 7 drives the outer bushing 3 to rotate, and the support shaft 8 drives the inner bushing 5 to rotate, and then the outer bushing 3 and the inner bushing 5 have the same angular velocity and opposite direction of rotation. When the inner bushing 5 and the outer bushing 3 rotate so that the inner air guide port 6 and the outer air guide port 4 overlap, the overlapping part forms a vent, and the device is connected to the air pipe through the flange head 2. The airflow is discharged from the vent on one side through the inner cavity of the inner sleeve 5 and then from the vent on the other side, and then the size of the vent is adjusted to adjust the airflow flux. When the vent cross-section increases, the gas flux increases, and conversely, when the vent cross-section decreases, the gas flux decreases. When the drive shaft 9 with the limit seat 18 rotates, the drive shaft 9 rotates continuously in one direction, so that the block 20 abuts against the limit block 21 and pushes the limit ring 19 to rotate, so that the limit block 21 on the limit ring 19 abuts against the limit frame 22, i.e., limiting the continued rotation of the drive shaft 9, and the block 20 does not contact the limit frame 22, thereby limiting the number of rotations of the drive shaft 9, i.e., limiting the rotation between the inner sleeve 5 and the outer sleeve 3 between an angle of 0° and 90°.

[0045] Compared with the prior art, the beneficial effects of the present invention are:

[0046] The device is provided with an inner sleeve 5 and an outer sleeve 3 which are nested inside and outside, and an inner air guide port 6 and an outer air guide port 4 of the same shape are provided on the inner sleeve 5 and the outer sleeve 3, and then by providing two sets of drive shafts 9 with opposite rotation directions, the rotation of the inner sleeve 5 and the outer sleeve 3 in opposite directions can be adjusted, thereby controlling the size of the ventilation port formed by the overlapping of the inner air guide port 6 and the outer air guide port 4 to adjust the gas flux.

[0047] For those skilled in the art, they can modify the technical solutions described in the aforementioned embodiments and 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 in the scope of protection of the present utility model.

Claims

1. A gas flow control device, comprising a housing (1) and a flange head (2), wherein the flange heads (2) are two and are symmetrically fixed on the front and rear side plates of the housing (1) after being re-signed; characterized in that: It also contains: An outer bushing (3), wherein the outer bushing (3) is movably arranged inside the outer shell (1), and the outer side wall of the outer bushing (3) is movably abutted against the inner side wall of the outer shell (1), and outer air guide ports (4) are provided on the walls on opposite sides of the outer bushing (3); An inner sleeve (5), wherein the inner sleeve (5) is movably arranged inside the outer sleeve (3), and the outer side wall of the inner sleeve (5) is movably abutted against the inner side wall of the outer sleeve (3), and inner air guide ports (6) are provided on the walls on opposite sides of the inner sleeve (5); A support sleeve (7), wherein the support sleeve (7) is fixedly arranged on the upper side wall of the outer sleeve (3); The support shaft (8) is fixedly arranged on the upper side wall of the inner sleeve (5), and the support shaft (8) is movably inserted into the support sleeve (7).

2. A gas flow control device according to claim 1, characterized in that: A driving shaft (9) is provided on each side of the support sleeve (7), and a driving gear (10) is provided on each of the two driving shafts (9). The two driving gears (10) are meshed with each other. A main gear (11) is fixedly sleeved on the support sleeve (7), and a sub-gear (12) is fixedly sleeved on the support shaft (8). A driven gear (13) is fixedly provided on each of the two driving shafts (9), and the driven gear (13) on one of the driving shafts (9) is meshed with the main gear (11), and the driven gear (13) on the other driving shaft (9) is meshed with the sub-gear (12).

3. A gas flow control device according to claim 2, characterized in that: A lower partition (14) is fixedly provided on the inner wall of the shell (1), the support sleeve (7) is screwed and inserted into the lower partition (14) through a bearing, an upper partition (15) is fixedly provided on the inner wall of the shell (1), the upper end of the support shaft (8) is screwed and inserted into the upper partition (15), and the drive shaft (9) is screwed and inserted into the upper partition (15) through a bearing.

4. A gas flow control device according to claim 3, characterized in that: A connecting ring (16) is fixedly provided on the upper end of the driving shaft (9), and a handle (17) is movably inserted into the connecting ring (16).

5. A gas flow control device according to claim 4, characterized in that: A limit seat (18) is fixedly provided on the upper end of the other driving shaft (9), a limit ring (19) is movably provided on the limit seat (18), a clamping block (20) is fixedly provided on the limit seat (18), a limit block (21) is fixedly provided on the limit ring (19), the clamping block (20) and the limit block (21) are matched together, a limit frame (22) is fixedly provided on the top plate of the housing (1), the limit frame (22) is movably provided on the limit ring (19), and the limit frame (22) and the limit block (21) are matched together.

6. A gas flow control device according to claim 5, characterized in that: A flow guide cover (23) is fixedly arranged inside the inner lining sleeve (5).

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