Gas flow rate adjusting device of deflation valve

Abstract

The utility model discloses a gas flow rate adjusting device of a deflation valve, which belongs to the field of valves and comprises a gas storage tank and a deflation valve component arranged on the gas storage tank and communicated with an exhaust pipe of the gas storage tank. The deflation valve assembly comprises a connecting pipe, a movable pipe arranged at the end of the connecting pipe in a sleeving mode and an adjusting mechanism arranged between the movable pipe and the connecting pipe and used for adjusting the caliber of the movable pipe. The adjusting mechanism comprises a positioning plate arranged in the movable pipe and a plurality of adjusting plates arranged between the positioning plate and the movable pipe in the circumferential direction, and guide rods are fixedly connected to the adjusting plates in an inserted mode. According to the adjusting device, the deflation valve assembly is improved, the caliber of the movable pipe can be sealed through mutual splicing of the multiple adjusting plates, meanwhile, the caliber of the movable pipe can be adjusted, and the adjusting device has the beneficial effects that the discharging pressure is controlled, energy consumption is reduced, the service life of equipment is prolonged, safety performance is improved, and operation and maintenance are simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a gas flow rate regulating device for a deflation valve. Background Art

[0002] The bleed valve, also known as the exhaust valve, is an important component used in various gas or liquid delivery systems to release the accumulated gas inside the system to ensure the normal operation of the system. The bleed valve is widely used in heating systems, water supply pipes, compressed air systems, gas storage tanks and many other industrial and household equipment.

[0003] The main function of the bleed valve used in the gas tank or system is to release excess gas or moisture in the system to ensure the safety and efficiency of the system operation.

[0004] A search revealed that most of the existing vent valves used in gas storage tanks are ordinary vent valves that only have two functions: opening and closing. They do not have the function of adjusting the valve diameter. Their functions are relatively simple and they cannot adjust the gas flow rate according to changes in gas pressure, which can easily lead to unnecessary gas emissions and waste of energy.

[0005] Therefore, the utility model provides a gas flow rate regulating device for a vent valve to solve the above problems. Utility Model Content

[0006] 1. Technical issues to be resolved

[0007] The utility model provides a gas flow rate regulating device for a vent valve, aiming to solve the problems raised in the background technology that most of the existing vent valves for gas storage tanks are ordinary vent valves that only have two functions of opening and closing, do not have the function of adjusting the valve diameter, have relatively simple functions, and cannot adjust the gas flow rate according to the change of gas pressure.

[0008] (II) Technical solution

[0009] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas flow rate regulating device for a deflation valve, comprising a gas storage tank and a deflation valve assembly arranged on the gas storage tank and connected to an exhaust pipe of the gas storage tank;

[0010] The difference from the existing regulating device is that: the air release valve assembly comprises a connecting pipe and a movable pipe sleeved on the end of the connecting pipe, and an regulating mechanism arranged in the movable pipe and between the connecting pipe for adjusting the diameter of the movable pipe; the regulating mechanism comprises a positioning plate arranged in the movable pipe and a plurality of regulating plates circumferentially arranged between the positioning plate and the movable pipe, a guide rod is fixedly inserted on the regulating plate, and the movable pipe and the positioning plate are both circumferentially provided with a first guide groove and a second guide groove sleeved on the end of the guide rod at opposite ends; the plurality of regulating plates are spliced ​​with each other to seal the diameter of the movable pipe and adjust the diameter of the movable pipe, and the movable pipe is adjusted by adjusting the diameter of the movable pipe. Adjusting the size of the caliber can change the gas flow rate out of the movable tube; the discharge starting pressure point of the system can be accurately controlled; correct caliber adjustment can reduce unnecessary gas emissions, avoid energy waste caused by frequent opening or excessive emissions, and is beneficial to energy conservation and emission reduction; through reasonable control of emissions, the pressure fluctuations inside the system can be reduced, the impact and wear on the equipment can be reduced, and the service life of related equipment can be extended; accurate caliber control helps to maintain the system within the safe pressure range, prevent accidents caused by excessive pressure, and ensure the safety of personnel and property; the easy-to-manually adjust the air release valve can simplify daily operation and maintenance procedures;

[0011] Among them, two fixed sleeves are symmetrically fixedly connected in the port of the connecting pipe, and a fixed rod fixedly connected to the positioning plate is slidably inserted inside the fixed sleeve; the position of the positioning plate can be limited by the cooperation between the fixed sleeve and the fixed rod, so that the movable tube can drive the adjustment plate to change its position under the cooperation of the guide rod and the first guide groove and the second guide groove.

[0012] Preferably, in order to improve the stability of the connection between adjacent adjustment plates, a guide plate is fixedly connected to one end of the adjustment plate, and a third guide groove for the guide plate to slide and engage is opened at the other end of the adjustment plate; through the cooperation between the guide plate and the third guide groove, the stability of the connection between adjacent adjustment plates can be improved, and deformation between adjacent connected adjustment plates under gas pressure can be avoided.

[0013] Preferably, the outer wall of the guide plate is fixedly connected with an epoxy resin coating in contact with the inner wall of the third guide groove; the epoxy resin coating can seal the gap between the guide plate and the third guide groove, thereby improving the sealing of the connection between adjacent adjustment plates.

[0014] Preferably, the outer wall of the movable tube is symmetrically provided with two limit slide grooves, and the internal sliding sleeve of the limit slide groove is provided with a limit rod fixedly connected to the outer wall of the connecting tube; through the cooperation between the limit rod and the limit slide groove, the movable tube can be prevented from being separated from the connecting tube under the impact of gas pressure.

[0015] Preferably, a plurality of protruding rods for increasing friction with the hand are fixedly connected to the outer wall of the movable tube at equal intervals in the circumferential direction.

[0016] Preferably, one end of the positioning plate close to the connecting pipe is provided with a first sealing gasket in contact with the end of the connecting pipe through an annular groove fixing sleeve, and the first sealing gasket is fixedly sleeved on the outside of the fixing rod through a through hole.

[0017] Preferably, a second sealing gasket fixedly connected to the first sealing gasket is slidably inserted in the port of the connecting pipe, and the second sealing gasket is fixedly sleeved on the outside of the fixed rod through a through hole; the first sealing gasket and the second sealing gasket are integrally formed in a T shape, and the first sealing gasket and the second sealing gasket are both made of polytetrafluoroethylene material, polytetrafluoroethylene has excellent chemical stability, sealing and low friction coefficient, and the first sealing gasket and the second sealing gasket are fixedly connected with epoxy resin coating at the contact point with the connecting pipe, and the epoxy resin coating can be used to seal the gap between the first sealing gasket and the second sealing gasket and the connecting pipe, thereby improving the sealing between the first sealing gasket and the second sealing gasket and the connecting pipe.

[0018] Preferably, a sealing ring is provided between the outer wall of the connecting tube and the inner wall of the movable tube, and positioning grooves for positioning the sealing ring are provided on the outer wall of the connecting tube and the inner wall of the movable tube.

[0019] Preferably, the regulating device further comprises a locking assembly arranged on the movable tube for fixing the movable tube and the connecting tube, the locking assembly comprising a fixing cylinder fixed on the movable tube, a locking rod slidably inserted on the fixing cylinder, which penetrates the inner wall of the movable tube and contacts the outer wall of the connecting tube, a plurality of locking grooves equidistantly provided on the outer wall of the connecting tube and plugged into and cooperate with the bottom of the locking rod, a limiting slide fixedly connected to the locking rod is slidably sleeved in the fixing cylinder through the limiting groove, a fastening spring is sleeved on the outside of the locking rod and located between the top of the limiting slide and the limiting groove; by utilizing the cooperation of the locking rod and the locking groove, the position of the movable tube after adjusting the caliber can be locked, so as to ensure that the system is maintained within a preset safe pressure or flow range, avoid excessive or low pressure caused by accidental adjustment, and ensure the stability and safety of the operation process; once the optimal flow or pressure setting point is found, locking the movable tube can avoid frequent manual adjustment, improve the operating efficiency of the system, and reduce energy consumption; for the operator, after adjusting and locking the valve, the daily operation process can be simplified, human intervention can be reduced, and the operation can be made easier and faster.

[0020] (III) Beneficial effects

[0021] The regulating device improves the air bleed valve assembly and utilizes the mutual splicing of multiple regulating plates to seal the caliber of the movable tube while adjusting the caliber size of the movable tube, so as to accurately control the discharge starting pressure point of the system; correct caliber adjustment can reduce unnecessary gas emissions, avoid energy waste caused by frequent opening or excessive emissions, and is beneficial to energy conservation and emission reduction; through reasonable control of emissions, it can reduce pressure fluctuations inside the system, reduce impact and wear on equipment, and thus extend the service life of related equipment; accurate caliber control helps to maintain the system operating within a safe pressure range, prevent accidents caused by excessive pressure, and ensure the safety of personnel and property; the air bleed valve that is easy to manually adjust can simplify daily operations and maintenance procedures.

[0022] The adjusting device can lock the position of the movable tube after adjusting the caliber by means of a locking assembly, a locking rod and a locking groove, thereby ensuring that the system is maintained within a preset safe pressure or flow range, avoiding excessive or low pressure due to accidental adjustment, and ensuring the stability and safety of the operation process; once the optimal flow or pressure setting point is found, locking the movable tube can avoid frequent manual adjustments, improve the operating efficiency of the system, and reduce energy consumption; for the operator, after adjusting and locking the valve, the daily operating process can be simplified, human intervention can be reduced, and the operation can be easier and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of a gas flow rate regulating device for a vent valve;

[0024] Figure 2 for Figure 1 Schematic diagram of the structure of the middle air release valve assembly and the locking assembly;

[0025] Figure 3 for Figure 2 Schematic diagram of the main section structure;

[0026] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0027] Figure 5 It is a schematic diagram of the connecting pipe structure;

[0028] Figure 6 It is a schematic diagram of the movable tube structure;

[0029] Figure 7 It is a schematic diagram of the structure of the adjustment plate;

[0030] Figure 8 is a schematic diagram of the positioning plate structure;

[0031] Fig. 9 for Figure 8Exploded view of the structure on the other side;

[0032] Fig.10 for Figure 2 Diagram showing the middle air release valve assembly in the open state.

[0033] In the figure:

[0034] 1. Gas tank; 2. Exhaust pipe; 3. Air release valve assembly; 31. Connecting pipe; 311. Limit rod; 312. Fixed sleeve; 32. Movable pipe; 321. First guide groove; 322. Limit slide groove; 323. Protruding rod; 33. Positioning plate; 331. Second guide groove; 332. Fixed rod; 34. Adjusting plate; 341. Guide rod; 342. Guide plate; 343. Third guide groove; 35. Sealing ring; 36. First sealing gasket; 361. Second sealing gasket; 37. Positioning groove; 4. Locking assembly; 41. Fixed cylinder; 42. Locking rod; 43. Limit slide plate; 44. Fastening spring; 45. Locking groove. DETAILED DESCRIPTION

[0035] 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 in 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.

[0036] Example 1

[0037] The utility model provides a gas flow rate regulating device for a vent valve, such as Figure 1-10 As shown, the regulating device comprises an air storage tank 1 and an air release valve assembly 3 which is arranged on the air storage tank 1 and communicated with an exhaust pipe 2 of the air storage tank 1;

[0038] The deflation valve assembly 3 includes a connecting tube 31, a movable tube 32 sleeved at the end of the connecting tube 31, and an adjusting mechanism arranged in the movable tube 32 and between the connecting tube 31 for adjusting the diameter of the movable tube 32; the adjusting mechanism includes a positioning plate 33 arranged in the movable tube 32 and a plurality of adjusting plates 34 circumferentially arranged between the positioning plate 33 and the movable tube 32, a guide rod 341 is fixedly inserted on the adjusting plate 34, and the first guide groove 321 and the second guide groove 331 sleeved at the end of the guide rod 341 are circumferentially opened at opposite ends of the movable tube 32 and the positioning plate 33; the plurality of adjusting plates 34 are spliced ​​with each other to seal the diameter of the movable tube 32 and adjust the diameter of the movable tube 32 The size can be adjusted by adjusting the size of the movable tube 32 to change the gas flow rate out of the movable tube 32; the discharge starting pressure point of the system can be accurately controlled; correct caliber adjustment can reduce unnecessary gas emissions, avoid energy waste caused by frequent opening or excessive emissions, and is beneficial to energy conservation and emission reduction; through reasonable control of emissions, the pressure fluctuation inside the system can be reduced, the impact and wear on the equipment can be reduced, and the service life of related equipment can be extended; accurate caliber control helps to maintain the system working within a safe pressure range, prevent accidents caused by excessive pressure, and ensure the safety of personnel and property; the easy-to-manually adjust the air release valve can simplify daily operation and maintenance procedures;

[0039] Among them, two fixed sleeves 312 are symmetrically fixedly connected in the port of the connecting pipe 31, and a fixed rod 332 fixedly connected to the positioning plate 33 is slidably inserted in the fixed sleeve 312; the position of the positioning plate 33 can be limited by the cooperation between the fixed sleeve 312 and the fixed rod 332, so that the movable pipe 32 can drive the adjustment plate 34 to change its position under the cooperation of the guide rod 341, the first guide groove 321 and the second guide groove 331;

[0040] When in use, first hold the movable tube 32, then rotate the movable tube 32, guide and move the adjustment plate 34 under the cooperation of the first guide groove 321 and the second guide groove 331 and the fixing rod 332 and the fixing sleeve 312, and then adjust the caliber of the movable tube 32; refer to the attached Fig.10 When the movable tube 32 is rotated clockwise, the diameter of the movable tube 32 becomes smaller, the cross-section through which the gas flows decreases, and the flow rate increases; when the movable tube 32 is rotated counterclockwise, the diameter of the movable tube 32 becomes larger, the cross-section through which the gas flows increases, and the flow rate decreases.

[0041] Furthermore, one end of the adjustment plate 34 is fixedly connected to a guide plate 342, and the other end of the adjustment plate 34 is provided with a third guide groove 343 for the guide plate 342 to slide and engage. Through the cooperation between the guide plate 342 and the third guide groove 343, the stability of the connection between adjacent adjustment plates 34 can be improved, thereby avoiding deformation between adjacent connected adjustment plates 34 under gas pressure.

[0042] Furthermore, the outer wall of the guide plate 342 is fixedly connected with an epoxy resin coating in contact with the inner wall of the third guide groove 343; the epoxy resin coating has good corrosion resistance, especially alkali resistance, good wear resistance, and excellent adhesion to metal. The paint film formed is hard and elastic, and has a low shrinkage rate. The epoxy resin coating can be used to seal the gap between the guide plate 342 and the third guide groove 343, thereby improving the sealing of the connection between adjacent adjustment plates 34.

[0043] Furthermore, two limiting grooves 322 are symmetrically provided on the outer wall of the movable tube 32, and the internal sliding sleeve of the limiting groove 322 is connected with a limiting rod 311 fixedly connected to the outer wall of the connecting tube 31; through the cooperation between the limiting rod 311 and the limiting groove 322, the movable tube 32 can be prevented from being separated from the connecting tube 31 under the impact of gas pressure.

[0044] Furthermore, a plurality of protruding rods 323 for increasing the friction force with the hand are fixedly connected to the outer wall of the movable tube 32 at equal intervals in the circumferential direction.

[0045] Furthermore, one end of the positioning plate 33 close to the connecting tube 31 is provided with a first sealing gasket 36 which contacts the end of the connecting tube 31 through an annular groove fixing sleeve, and the first sealing gasket 36 is fixed on the outside of the fixing rod 332 through a through hole fixing sleeve; the first sealing gasket 36 can improve the sealing performance between the positioning plate 33 and the end of the connecting tube 31.

[0046] Furthermore, a second sealing gasket 361 fixedly connected to the first sealing gasket 36 is slidably inserted into the port of the connecting pipe 31, and the second sealing gasket 361 is fixedly sleeved on the outside of the fixing rod 332 through a through hole; the second sealing gasket 361 inserted into the port of the connecting pipe 31 can improve the sealing performance between the first sealing gasket 36 and the connecting pipe 31;

[0047] Among them, the first sealing gasket 36 and the second sealing gasket 361 are integrally formed in a T shape, and the first sealing gasket 36 and the second sealing gasket 361 are both made of polytetrafluoroethylene material. Polytetrafluoroethylene has excellent chemical stability, sealing and low friction coefficient. The first sealing gasket 36 and the second sealing gasket 361 are fixedly connected with epoxy resin coating at the contact point with the connecting pipe 31. The epoxy resin coating can seal the gap between the first sealing gasket 36 and the second sealing gasket 361 and the connecting pipe 31, thereby improving the sealing between the first sealing gasket 36 and the second sealing gasket 361 and the connecting pipe 31.

[0048] Furthermore, a sealing ring 35 is provided between the outer wall of the connecting tube 31 and the inner wall of the movable tube 32, and positioning grooves 37 for positioning the sealing ring 35 are provided on the outer wall of the connecting tube 31 and the inner wall of the movable tube 32; the sealing ring 35 is made of epoxy resin paint, and the sealing ring 35 improves the sealing between the connecting tube 31 and the movable tube 32.

[0049] Example 2

[0050] See attached Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Figure 5 , Attachment Figure 6 , and attached Fig.10As shown, the regulating device also includes a locking assembly 4 arranged on the movable tube 32 for fixing the movable tube 32 and the connecting tube 31, the locking assembly 4 includes a fixing cylinder 41 fixed on the movable tube 32, a locking rod 42 which penetrates the inner wall of the movable tube 32 and contacts the outer wall of the connecting tube 31 is slidably inserted on the fixing cylinder 41, a plurality of locking grooves 45 which are equidistantly arranged on the outer wall of the connecting tube 31 and are plugged and matched with the bottom of the locking rod 42, a limiting slide plate 43 which is fixedly connected to the locking rod 42 is slidably sleeved in the fixing cylinder 41 through the limiting groove, and a fastening spring 44 is sleeved on the outside of the locking rod 42 and between the top of the limiting slide plate 43 and the limiting groove; wherein the two side walls of the locking rod 42 corresponding to the inlet and outlet ends of the movable tube 32 are parallel to each other in planes, and the other two side walls of the locking rod 42 are convex arc surfaces, the curvature of the inner wall of the locking groove 45 is consistent with the curvature of the outer wall of the locking rod 42, and the movable tube 32 can be further positioned in the gas flow direction. While limiting the position, it is also convenient for the movable tube 32 to move out of the locking groove 45 under the action of the extrusion force while the movable tube 32 rotates circumferentially; the tightening spring 44 is initially in a state of extrusion force and accumulation, and the elastic force of the spring can make the locking rod 42 stably placed in the locking groove 45 without being affected by the circumferential force of the movable tube 32; by using the cooperation of the locking rod 42 and the locking groove 45, the position of the movable tube 32 after the caliber is adjusted can be locked, which can ensure that the system is maintained within the preset safety pressure or flow range, avoid excessive or low pressure due to accidental adjustment, and ensure the stability and safety of the operation process; once the optimal flow or pressure setting point is found, locking the movable tube 32 can avoid frequent manual adjustments, improve the operating efficiency of the system, and reduce energy consumption; for operators, after adjusting and locking the valve, the daily operation process can be simplified, human intervention can be reduced, and the operation can be easier and faster.

[0051] When in use, when the movable tube 32 rotates in the circumferential direction, the two side walls of the locking rod 42 are convex arc-shaped along the direction of rotation of the movable tube 32, and then the locking rod 42 is moved out of the locking groove 45 under the action of the movable tube 32, and the locking rod 42 drives the limiting slide plate 43 to squeeze the fastening spring 44, causing it to contract and accumulate force. Under the action of the spring elastic force, the end of the locking rod 42 always keeps in contact with the outer wall of the connecting tube 31, and when the locking rod 42 moves to the next locking groove 45, the locking rod 42 is inserted back into the locking groove 45 under the action of the spring elastic force to lock the movable tube 32 in the current position.

[0052] The above description 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 within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gas flow rate regulating device for a deflation valve, comprising a gas storage tank (1) and a deflation valve assembly (3) arranged on the gas storage tank (1) and connected to an exhaust pipe (2) of the gas storage tank (1); Features: The air release valve assembly (3) comprises a connecting pipe (31), a movable pipe (32) sleeved on the end of the connecting pipe (31), and an adjusting mechanism arranged inside the movable pipe (32) and between the connecting pipe (31) for adjusting the caliber of the movable pipe (32); The adjustment mechanism comprises a positioning plate (33) arranged in the movable tube (32) and a plurality of adjustment plates (34) circumferentially arranged between the positioning plate (33) and the movable tube (32); a guide rod (341) is fixedly inserted on the adjustment plate (34); and opposite ends of the movable tube (32) and the positioning plate (33) are circumferentially provided with a first guide groove (321) and a second guide groove (331) which are sleeved on the end of the guide rod (341); Two fixed sleeves (312) are symmetrically fixedly connected in the port of the connecting pipe (31), and a fixed rod (332) fixedly connected to the positioning plate (33) is slidably inserted in the interior of the fixed sleeve (312).

2. The gas flow rate regulating device for a vent valve according to claim 1, characterized in that: One end of the adjustment plate (34) is fixedly connected to a guide plate (342), and the other end of the adjustment plate (34) is provided with a third guide groove (343) for the guide plate (342) to slide and engage.

3. The gas flow rate regulating device for a vent valve according to claim 2, characterized in that: The outer wall of the guide plate (342) is fixedly connected with an epoxy resin coating that contacts the inner wall of the third guide groove (343).

4. The gas flow rate regulating device for a vent valve according to claim 1, characterized in that: The outer wall of the movable tube (32) is symmetrically provided with two limiting sliding grooves (322), and the limiting sliding grooves (322) are internally slidably sleeved with limiting rods (311) fixedly connected to the outer wall of the connecting tube (31).

5. The gas flow rate regulating device for a vent valve according to claim 1, characterized in that: The outer wall of the movable tube (32) is fixedly connected with a plurality of convex rods (323) equidistantly around the circumference for increasing the friction force with the hand.

6. The gas flow rate regulating device for a vent valve according to claim 1, characterized in that: One end of the positioning plate (33) close to the connecting pipe (31) is provided with a first sealing gasket (36) in contact with the end of the connecting pipe (31) through an annular groove fixing sleeve, and the first sealing gasket (36) is fixedly sleeved on the outside of the fixing rod (332) through a through hole.

7. The gas flow rate regulating device for a vent valve according to claim 6, characterized in that: A second sealing gasket (361) fixedly connected to the first sealing gasket (36) is slidably inserted into the port of the connecting pipe (31), and the second sealing gasket (361) is fixedly sleeved on the outside of the fixing rod (332) through a through hole.

8. The gas flow rate regulating device for a vent valve according to claim 1, characterized in that: A sealing ring (35) is provided between the outer wall of the connecting tube (31) and the inner wall of the movable tube (32), and positioning grooves (37) for positioning the sealing ring (35) are provided on the outer wall of the connecting tube (31) and the inner wall of the movable tube (32).

9. The gas flow rate regulating device for a vent valve according to claim 1, characterized in that: The adjusting device further comprises a locking assembly (4) arranged on the movable tube (32) for fixing the movable tube (32) and the connecting tube (31), the locking assembly (4) comprising a fixing tube (41) fixed on the movable tube (32), a locking rod (42) penetrating the inner wall of the movable tube (32) and contacting the outer wall of the connecting tube (31) being slidably inserted on the fixing tube (41), a plurality of locking grooves (45) equidistantly arranged on the outer wall of the connecting tube (31) and plugged with the bottom of the locking rod (42), a limiting slide plate (43) fixedly connected to the locking rod (42) being slidably sleeved in the fixing tube (41) through the limiting groove, and a fastening spring (44) being sleeved outside the locking rod (42) and located between the top end of the limiting slide plate (43) and the limiting groove.

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