CN215359800U - Throttling device of gas discharge system - Google Patents

Abstract

The utility model relates to the technical field of gas discharge systems, in particular to a throttling device of a gas discharge system. The throttling device of the gas discharge system comprises a gas inlet pipe, a gas outlet pipe, a throttling pipe, a first throttling assembly and a second throttling assembly, wherein the gas outlet pipe is communicated with the side wall of the gas inlet pipe, the top end of the gas inlet pipe is fixedly connected with an end plate, the throttling pipe is fixedly installed in an inner cavity of the gas inlet pipe and located below the gas outlet pipe, a cavity is formed in the throttling pipe, a gas inlet end is arranged below the cavity, a gas outlet end is arranged above the cavity, the first throttling assembly is installed in the gas inlet pipe and can stretch into the gas outlet end, and the second throttling assembly is installed in the gas inlet pipe and can stretch into the gas inlet end. The throttling device equipment of the gas discharge system provided by the utility model has the advantages of compact structure, convenience in adjustment and use and convenience in stably adjusting the gas flow in the gas discharge system, and effectively reduces the energy consumption of a granulator.

Description

Throttling device of gas discharge system

Technical Field

The utility model belongs to the technical field of gas emission, and particularly relates to a throttling device of a gas emission system.

Background

The main machine of the plastic granulator is an extruding machine which consists of an extruding system, a transmission system and a heating and cooling system. The regenerated resources are developed vigorously to change waste into valuable, and the metal cylinder in the manufacturing process is generally made of alloy steel with high heat resistance and compressive strength, firmness, wear resistance and corrosion resistance or composite steel pipe lined with the alloy steel. The machine barrel is matched with the screw rod to realize the crushing, softening, melting, plasticizing, exhausting and compacting of the plastic, and continuously and uniformly convey the rubber material to the molding system.

The metal cylinder is required to be connected with an air system, but the exhaust system of the existing granulator cannot adjust the exhaust flow, so that a large amount of heat energy in the metal cylinder is lost, the use of the granulator is influenced, and the energy consumption of the granulator is improved.

Therefore, in view of the above technical problems, it is necessary to provide a throttling device of a gas discharge system.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a throttling device of a gas discharge system, which aims to solve the problem that the energy consumption of a granulator is overlarge because the exhaust of a discharge system of the granulator in the prior art can not be adjusted and throttled.

The throttling device of the gas discharge system provided by the utility model comprises: the side wall of the air inlet pipe is communicated with an air outlet pipe, and the top end of the air inlet pipe is fixedly connected with an end plate; the throttle pipe is fixedly arranged in the inner cavity of the air inlet pipe and is positioned below the air outlet pipe, the throttle pipe is provided with a cavity, an air inlet end head is arranged below the cavity, and an air outlet end head is arranged above the cavity; the first throttling component is arranged in the air inlet pipe and can extend into the air outlet end; and the second throttling assembly is arranged in the air inlet pipe and can extend into the air inlet end head.

Preferably, first throttling component includes closing plate, spliced pole, sealing sleeve, hollow threaded rod, gear wheel, driving motor and pinion, the closing plate is through two spliced pole fixed mounting in the below of end plate, sealing sleeve slidable mounting is on the spliced pole, and the sealing sleeve cover is established on the end of giving vent to anger of throttle pipe, the hollow threaded rod rotates and installs on the closing plate, and the hollow threaded rod passes closing plate and sealing sleeve threaded connection downwards, the gear wheel cover is established on the top of hollow threaded rod, driving motor fixed mounting is on the closing plate, and driving motor's output shaft installs the pinion, pinion and gear wheel meshing.

Preferably, a plurality of air outlets are uniformly formed in the side wall of the air outlet end.

Preferably, the side wall of the sealing plate is sleeved with a sealing ring.

Preferably, the second throttling assembly comprises a spring sleeve, an upper spring seat, an adjusting bolt, a spring, a lower spring seat, a valve rod and a valve core, the spring sleeve is fixedly mounted on the end plate, the upper spring seat is connected to the spring sleeve in a sliding manner, the adjusting bolt is installed on the spring sleeve in a threaded manner and is fixedly connected with the top end of the upper spring seat, one end of the spring is fixedly connected with the upper spring seat, the other end of the spring is fixedly connected with the lower spring seat, the lower spring seat is connected with the spring sleeve in a sliding manner, the bottom end of the lower spring seat is fixedly connected with the valve rod, the valve rod penetrates through the hollow threaded rod and the sealing sleeve fixedly connected with the valve core downwards in sequence, the valve core is arranged in the cavity, and the valve core is positioned right above the air inlet end.

Preferably, a sealing sleeve is arranged between the valve rod and the sealing sleeve.

Preferably, the side wall of the spring sleeve is provided with heat dissipation holes.

Preferably, the valve core is connected with the valve rod through threads, and the valve core is conical.

Preferably, still be equipped with the aperture on the end plate and instruct the subassembly, the aperture instructs the subassembly to include thin threaded rod, pinion, nut and instruction post, thin threaded rod rotates to be installed on the closing plate, and the cover is equipped with the pinion on the thin threaded rod, pinion and gear wheel meshing, threaded rod upwards pass end plate threaded connection have the nut, instruct the post to install in the end plate top and be located one side of thin threaded rod, and instruct the post and seted up the spout, instruct the post to be located the spout both sides and be equipped with the scale, nut fixedly connected with stopper, be equipped with the instruction arrow point on the lateral wall of stopper, and stopper and spout sliding connection.

Preferably, a hand wheel is installed at the top end of the fine threaded rod.

Compared with the related art, the throttling device of the gas discharge system provided by the utility model has the following beneficial effects:

1. according to the utility model, the throttle pipe is arranged in the air inlet pipe, and the air outlet end and the air inlet end of the throttle pipe are respectively throttled and regulated through the first throttle component and the second throttle component in the air inlet pipe, so that the flow of gas flowing through the throttle pipe is effectively controlled, the first throttle component regulates the gas outflow of the air outlet end through the sealing sleeve, and the second throttle component throttles the air inlet end through the conical valve core;

2. according to the utility model, the opening degree of the first throttling component can be visually observed by arranging the opening degree indicating component, so that the throttling adjustment of the throttling pipe is facilitated, and the first throttling component can be manually adjusted by utilizing the opening degree indicating component, so that the throttling adjustment of the throttling pipe is manually performed under the emergency condition of the failure of the driving motor, and the throttling control is more stable.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of the overall structure provided by the present invention;

FIG. 2 is a schematic view of the internal structure of the present invention;

FIG. 3 is a schematic structural view of the first throttle assembly shown in FIG. 1;

FIG. 4 is a partial enlarged view of a shown in FIG. 1;

FIG. 5 is a partial enlarged view of b shown in FIG. 3;

fig. 6 is a partially enlarged view of c shown in fig. 2.

Reference numbers in the figures: 1. an air inlet pipe; 2. an air outlet pipe; 3. a throttle pipe; 31. a cavity; 32. an air inlet end; 33. an air outlet end; 331. an air outlet; 4. a first throttling assembly; 41. a sealing plate; 411. a seal ring; 42. connecting columns; 43. a sealing sleeve; 44. a hollow threaded rod; 45. a bull gear; 46. a drive motor; 47. a pinion gear; 5. a second throttling assembly; 51. a spring sleeve; 511. heat dissipation holes; 52. an upper spring seat; 53. adjusting the bolt; 54. a spring; 55. a lower spring seat; 56. a valve stem; 561. sealing sleeves; 57. a valve core; 6. an end plate; 7. an opening degree indicating component; 71. a thin threaded rod; 72. a pinion gear; 73. a nut; 731. a limiting block; 732. an arrow is indicated; 74. an indicator column; 741. a chute; 742. calibration; 8. a handwheel.

Detailed Description

The present invention will be described in detail below with reference to embodiments shown in the drawings. The embodiments are not intended to limit the present invention, and structural, methodological, or functional changes made by those skilled in the art according to the embodiments are included in the scope of the present invention.

Please refer to fig. 1 to fig. 6, wherein fig. 1 is a schematic diagram of an overall structure provided by the present invention; FIG. 2 is a schematic view of the internal structure of the present invention; FIG. 3 is a schematic structural view of the first throttle assembly shown in FIG. 1; FIG. 4 is a partial enlarged view of a shown in FIG. 1; FIG. 5 is a partial enlarged view of b shown in FIG. 3; fig. 6 is a partially enlarged view of c shown in fig. 2. The method comprises the following steps: the gas inlet pipe comprises an air inlet pipe 1, an air outlet pipe 2, a throttle pipe 3, a first throttle component 4, a second throttle component 5, an end plate 6 and an opening degree indicating component 7.

In the specific implementation process, as shown in fig. 1 and 2, the side wall of the air inlet pipe 1 is communicated with an air outlet pipe 2, and the top end of the air inlet pipe 1 is fixedly connected with an end plate 6; the throttle pipe 3 is fixedly arranged in the inner cavity of the air inlet pipe 1 and is positioned below the air outlet pipe 2, the throttle pipe 3 is provided with a cavity 31, an air inlet end head 32 is arranged below the cavity 31, and an air outlet end head 33 is arranged above the cavity 31; the first throttling component 4 is arranged in the air inlet pipe 1, and the first throttling component 4 can extend into the air outlet end head 33; and the second throttling assembly 5, wherein the second throttling assembly 5 is arranged in the air inlet pipe 1 and can extend into the air inlet end head 32.

It should be noted that: during the use, can stretch into through first throttle subassembly 4 and give vent to anger on the end 33 of giving vent to anger of throttle pipe 3 and throttle and adjust, can admit air the throttle and adjust through second throttle subassembly 5 to the end 32 that admits air of throttle pipe 3 to the realization is adjusted the gas that flows through throttle pipe 3, can throttle the exhaust system of granulator well, reduces the energy consumption of granulator.

Referring to fig. 3 and 5, the first throttling assembly 4 includes a sealing plate 41, connecting columns 42, a sealing sleeve 43, a hollow threaded rod 44, a large gear 45, a driving motor 46 and a small gear 47, the sealing plate 41 is fixedly mounted below the end plate 6 through the two connecting columns 42, the sealing sleeve 43 is slidably mounted on the connecting columns 42, the sealing sleeve 43 is sleeved on the air outlet end 33 of the throttling pipe 3, the hollow threaded rod 44 is rotatably mounted on the sealing plate 41, the hollow threaded rod 44 downwardly penetrates through the sealing plate 41 to be in threaded connection with the sealing sleeve 43, the large gear 45 is sleeved on the top end of the hollow threaded rod 44, the driving motor 46 is fixedly mounted on the sealing plate 41, the small gear 47 is mounted on an output shaft of the driving motor 46, and the small gear 47 is meshed with the large gear 45.

It should be noted that: when the first throttling assembly 4 is used, the driving motor 46 controls the small gear 47 to rotate, the small gear 47 is in meshing transmission with the large gear 45, the large gear 45 drives the hollow threaded rod 44 to rotate, the hollow threaded rod 44 drives the sealing sleeve 43 to move along the connecting column 42, when the sealing sleeve 43 moves downwards, the opening degree of the air outlet end head 33 is reduced, and when the sealing sleeve 43 moves upwards, the opening degree of the air outlet end head 33 is increased.

Referring to fig. 3, a plurality of air outlets 331 are uniformly formed on the sidewall of the air outlet tip 33.

It should be noted that: here, sealing sleeve 43 regulates the gas flow rate of outlet tip 33 by controlling the vent area of outlet ports 331, and the maximum flow area of the plurality of outlet ports 331 is equivalent to the flow cross section of outlet tip 33.

Referring to fig. 3, the side wall of the sealing plate 41 is sleeved with a sealing ring 411. .

Here, an annular groove is formed in the side wall of the sealing plate 41, and a sealing ring 411 is installed in the annular groove to seal the sealing plate 41 and the inner wall of the intake pipe 1, thereby reducing gas leakage.

Referring to fig. 2 and 6, the second throttling assembly 5 includes a spring sleeve 51, an upper spring seat 52, an adjusting bolt 53, a spring 54, a lower spring seat 55, a valve rod 56, and a valve core 57, the spring sleeve 51 is fixedly installed on the end plate 6, the upper spring seat 52 is slidably connected in the spring sleeve 51, the adjusting bolt 53 is threadedly installed on the spring sleeve 51 and is fixedly connected with the top end of the upper spring seat 52, one end of the spring 54 is fixedly connected with the upper spring seat 52, the other end of the spring 54 is fixedly connected with the lower spring seat 55, the lower spring seat 55 is slidably connected with the spring sleeve 51, the bottom end of the lower spring seat 55 is fixedly connected with the valve rod 56, the valve rod 56 sequentially penetrates through the hollow threaded rod 44 and the sealing sleeve 43 downwards to be fixedly connected with the valve core 57, the valve core 57 is disposed in the cavity 31, and the valve core 57 is located right above the air inlet end head 32;

it should be noted that: when the second throttling assembly 5 is used, the position of the upper spring seat 52 in the spring sleeve 51 is adjusted through the adjusting bolt 53, the upper spring seat 52 can adjust the initial height of the valve rod 56 through the spring 54 and the lower spring seat 55, the valve rod 56 further controls the initial position height of the valve core 57, the valve core 57 is used for throttling and adjusting the air intake of the air intake end 32, when the upper spring seat 52 is controlled to be at the lowest end limit position, the valve core 57 completely closes the air intake end 32, when the upper spring seat 52 is at the topmost limit position, the valve core 57 completely opens the air intake end 32, and the valve core 57 can be controlled to have automatic throttling and adjusting capacity through the spring 54 with different elastic coefficients, namely when the air pressure of the air intake end 32 is greater than the set pressure of the spring 54, the air lifts the valve core 57 upwards, the opening degree is increased, and when the air pressure of the air intake end 32 is less than the set pressure of the spring 54, the valve core 57 is at the original position and the opening degree is unchanged.

Referring to fig. 2, a sealing sleeve 561 is provided between the valve stem 56 and the sealing sleeve 43.

It should be noted that: the sealing sleeve 561 is fixedly connected with the inner sleeve of the sealing sleeve 43, the valve rod 56 passes through the sealing sleeve 561, and the valve rod 56 can slide along the sealing sleeve 561 to seal between the sealing sleeve 43 and the valve rod 56, so as to prevent gas from flowing out of the hollow threaded rod 44 in the sealing sleeve 43 and causing gas leakage.

Referring to fig. 5, the side wall of the spring sleeve 51 is formed with heat dissipating holes 511.

It should be noted that: the heat dissipation device is used for dissipating heat of the spring 54, preventing overheat gas from entering the valve rod 56 to conduct heat to cause the failure of the spring 54, and prolonging the service life of the spring 54.

Referring to fig. 5, the valve core 57 is screwed with the stem 56, and the valve core 57 has a conical shape.

It should be noted that: the valve core 57 is in threaded connection with the valve rod 56, so that the valve core 57 can be conveniently installed on the valve rod 56, later-stage replacement is facilitated, the conical valve core 57 extends into an air inlet hole of the air inlet end head 32, and the flow area is changed for throttling adjustment.

Referring to fig. 1, 4 and 5, an opening degree indicating assembly 7 is further disposed on the end plate 6, the opening degree indicating assembly 7 includes a fine threaded rod 71, a pinion 72, a nut 73 and an indicating post 74, the fine threaded rod 71 is rotatably mounted on the sealing plate 41, the pinion 72 is sleeved on the fine threaded rod 71, the pinion 72 is meshed with the large gear 45, the threaded rod upwardly penetrates through the end plate 6 and is connected with the nut 73 in a threaded manner, the indicating post 74 is mounted at the top end of the end plate 6 and located on one side of the fine threaded rod 71, a sliding groove 741 is formed in the indicating post 74, scales 742 are disposed on two sides of the sliding groove 741 of the indicating post 74, a limiting block 731 is fixedly connected to the nut 73, an indicating arrow 732 is disposed on a side wall of the limiting block 731, and the limiting block 731 is slidably connected to the sliding groove 741.

It should be noted that: when the first throttling assembly 4 is adjusted, when the large gear 45 rotates, the large gear 45 is meshed with the pinion 72, the pinion 72 drives the fine threaded rod 71 to rotate, the fine threaded rod 71 drives the nut 73 to move under the matching of the limiting block 731 and the indicating column 74 sliding groove 741, the nut 73 moves, an indicating arrow 732 on the limiting block 731 points to a scale 742 of the indicating column 74, the opening degree of the current gas outlet end 33 can be displayed, the scale 742 ranges from zero to one hundred, and the gas outlet end 33 corresponding to the gas inlet end is completely closed and completely opened.

Referring to fig. 1, a hand wheel 8 is mounted on the top end of the fine threaded rod 71.

It should be noted that: the hand wheel 8 is arranged here, so that when the driving motor 46 suddenly fails and cannot be adjusted, the opening indicating assembly 7 is used for reversely controlling the first throttling assembly 4, specifically, the hand wheel 8 is rotated to drive the thin threaded rod 71 to rotate, the thin threaded rod 71 drives the auxiliary gear 72 to rotate, the auxiliary gear 72 is in meshing transmission with the large gear 45, the large gear 45 drives the hollow threaded rod 44 to rotate, the hollow threaded rod 44 drives the sealing sleeve 43 to move along the connecting column 42, when the sealing sleeve 43 moves downwards, the opening of the air outlet end 33 is reduced, and when the sealing sleeve 43 moves upwards, the opening of the air outlet end 33 is increased.

The working principle provided by the utility model is as follows: can stretch into the throttle pipe 3 through first throttle subassembly 4 and give vent to anger the throttle and adjust on the end 33 of giving vent to anger, can admit air the throttle and adjust to the end 32 that admits air of throttle pipe 3 through second throttle subassembly 5 to the realization is adjusted the gas that flows through throttle pipe 3, can throttle the exhaust system of granulator well, reduces the energy consumption of granulator, and whole throttling arrangement compact structure adjusts and uses conveniently, and adjusts reliable and stable.

The first throttling component 4 is specifically used, a driving motor 46 controls a pinion 47 to rotate, the pinion 47 is in meshing transmission with a gearwheel 45, the gearwheel 45 drives a hollow threaded rod 44 to rotate, the hollow threaded rod 44 drives a sealing sleeve 43 to move along a connecting column 42, when the sealing sleeve 43 moves downwards, the opening degree of an air outlet end 33 is reduced, when the sealing sleeve 43 moves upwards, the opening degree of the air outlet end 33 is increased, an opening degree indicating component 7 is arranged on an end plate 6, when the first throttling component 4 is adjusted, the gearwheel 45 rotates, the gearwheel 45 is meshed with a pinion 72, the pinion 72 drives a fine threaded rod 71 to rotate, the fine threaded rod 71 drives a nut 73 to move under the matching of a limiting block 731 and a sliding groove 741 of an indicating column 74, the nut 73 is pointed to a scale 742 of the indicating column 74 through an indicating arrow 732 on the limiting block 731, so that the current opening degree of the air outlet end 33 can be displayed, the scale 742 is from zero to one hundred, the corresponding inlet end outlet end 33 is completely closed and completely opened, and the opening indicating assembly 7 can also reversely adjust the first throttling assembly 4, so that the throttling adjustment is more stable.

The second throttling component 5 is used specifically, the position of the upper spring seat 52 in the spring sleeve 51 is adjusted through the adjusting bolt 53, the upper spring seat 52 can adjust the initial height of the valve rod 56 through the spring 54 and the lower spring seat 55, the valve rod 56 further controls the initial position height of the valve core 57, the valve core 57 is used for throttling and adjusting the air intake of the air intake end 32, when the upper spring seat 52 is controlled to be at the lowest end limit position, the valve core 57 completely closes the air intake end 32, when the upper spring seat 52 is at the topmost limit position, the valve core 57 completely opens the air intake end 32, and the valve core 57 can be controlled to have automatic throttling and adjusting capacity through the spring 54 with different elastic coefficients, that is, when the air pressure of the air intake end 32 is greater than the set pressure of the spring 54, the air lifts the valve core 57 upwards, the opening degree is increased, and when the air pressure of the air intake end 32 is less than the set pressure of the spring 54, the valve core 57 is at the original position and the opening degree is unchanged.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. A throttling device of a gas discharge system, comprising:

the air inlet pipe (1), the side wall of the air inlet pipe (1) is communicated with an air outlet pipe (2), and the top end of the air inlet pipe (1) is fixedly connected with an end plate (6);

the throttle pipe (3) is fixedly arranged in the inner cavity of the air inlet pipe (1) and is positioned below the air outlet pipe (2), the throttle pipe (3) is provided with a cavity (31), an air inlet end head (32) is arranged below the cavity (31), and an air outlet end head (33) is arranged above the cavity (31);

the first throttling component (4), the first throttling component (4) is arranged in the air inlet pipe (1) and can extend into the air outlet end (33);

and the second throttling component (5), the second throttling component (5) is arranged in the air inlet pipe (1) and can extend into the air inlet end head (32).

2. The throttling device of the gas discharge system according to claim 1, wherein the first throttling component (4) comprises a sealing plate (41), a connecting column (42), a sealing sleeve (43), a hollow threaded rod (44), a large gear (45), a driving motor (46) and a small gear (47), the sealing plate (41) is fixedly arranged below the end plate (6) through the two connecting columns (42), the sealing sleeve (43) is slidably arranged on the connecting column (42), the sealing sleeve (43) is sleeved on the gas outlet end (33) of the throttling pipe (3), the hollow threaded rod (44) is rotatably arranged on the sealing plate (41), the hollow threaded rod (44) downwards passes through the sealing plate (41) to be in threaded connection with the sealing sleeve (43), the large gear (45) is sleeved on the top end of the hollow threaded rod (44), the driving motor (46) is fixedly arranged on the sealing plate (41), and the output shaft of the driving motor (46) is provided with a pinion (47), and the pinion (47) is meshed with the gearwheel (45).

3. The throttling device of claim 2, wherein the side wall of the gas outlet end (33) is provided with a plurality of gas outlets (331) uniformly.

4. Throttling device of the gas discharge system according to claim 2, characterized in that the side wall of the sealing plate (41) is fitted with a sealing ring (411).

5. The throttling device of the gas discharge system according to claim 1, wherein the second throttling assembly (5) comprises a spring sleeve (51), an upper spring seat (52), an adjusting bolt (53), a spring (54), a lower spring seat (55), a valve rod (56) and a valve core (57), the spring sleeve (51) is fixedly arranged on the end plate (6), the upper spring seat (52) is connected in the spring sleeve (51) in a sliding manner, the adjusting bolt (53) is arranged on the spring sleeve (51) in a threaded manner and is fixedly connected with the top end of the upper spring seat (52), one end of the spring (54) is fixedly connected with the upper spring seat (52), the other end of the spring (54) is fixedly connected with the lower spring seat (55), the lower spring seat (55) is connected with the spring sleeve (51) in a sliding manner, and the bottom end of the lower spring seat (55) is fixedly connected with the valve rod (56), the valve rod (56) penetrates through the hollow threaded rod (44) and the sealing sleeve (43) downwards in sequence to be fixedly connected with the valve core (57), the valve core (57) is arranged in the cavity (31), and the valve core (57) is located right above the air inlet end head (32).

6. Throttling device according to claim 5, characterised in that a sealing sleeve (561) is provided between the valve stem (56) and the sealing sleeve (43).

7. Throttling device according to claim 5, characterised in that the side wall of said spring sleeve (51) is perforated with louvers (511).

8. The throttling device of the gas discharge system according to claim 5, characterized in that the spool (57) is screwed to the stem (56), and the spool (57) is conical.

9. The throttling device of the gas discharge system according to claim 1, wherein the end plate (6) is further provided with an opening degree indicating assembly (7), the opening degree indicating assembly (7) comprises a fine threaded rod (71), a pinion (72), a nut (73) and an indicating post (74), the fine threaded rod (71) is rotatably mounted on the sealing plate (41), the fine threaded rod (71) is sleeved with the pinion (72), the pinion (72) is meshed with the gearwheel (45), the threaded rod passes through the end plate (6) upwards to be connected with the nut (73) in a threaded manner, the indicating post (74) is mounted at the top end of the end plate (6) and is positioned at one side of the fine threaded rod (71), the indicating post (74) is provided with a sliding groove (741), the indicating post (74) is provided with scales (742) at two sides of the sliding groove (741), the nut (73) is fixedly connected with a limiting block (731), an indication arrow (732) is arranged on the side wall of the limiting block (731), and the limiting block (731) is connected with the sliding groove (741) in a sliding mode.

10. Throttling device for gas discharge systems according to claim 9, characterized in that the top end of the threaded rod (71) is fitted with a hand wheel (8).

Images