Anti-freezing exhalation and resistance integrated breather valve

Abstract

The utility model relates to the technical field of breather valves, in particular to an anti-freezing breathing and resistance integrated breather valve, which comprises a valve body, a valve cover, a valve core and a flame arrester, the valve cover is mounted at the top of the valve body, a flame arresting tube communicated with the inside and the outside is integrally arranged at the left part of the valve body, the flame arrester is mounted on the outer side of the flame arresting tube, and the valve core is arranged in the valve body and can be integrally taken out. The valve element comprises a valve seat, an upper cover, a negative pressure assembly and a positive pressure assembly, an annular baffle is integrally arranged in the valve body, the left side of the annular baffle is integrally connected with the fire retardant pipe, the outer side of the annular baffle is fixed to the inner side of the valve body through a support, an arc-shaped cavity is formed between the annular baffle and the valve body, and the valve seat is arranged in the annular baffle. The valve element is reasonable and compact in structure and convenient to use, the valve element can be quickly disassembled and assembled into a whole, can be integrally taken out, is convenient to disassemble and assemble integrally, facilitates inspection of the corrosion condition of the valve seat, does not need to be hoisted by heavy equipment, improves the safety coefficient and the overall working efficiency, and reduces the detection cost and the detection time.

Description

Technical Field

[0001] The utility model relates to the technical field of breathing valves and is an antifreeze type breathing valve integrated with breathing resistance. Background Art

[0002] The breathing valve is a safe and energy-saving product that maintains the gas pressure balance of the storage tank and reduces the volatilization of the medium. The breathing valve makes full use of the pressure bearing capacity of the storage tank itself to reduce the discharge of the medium. Its principle is to use the weight of the positive and negative pressure valve disc to control the positive pressure of the exhaust and the negative pressure of the intake of the storage tank; when the internal pressure of the oil tank is too high, the internal mixed oil and gas can be discharged to the outside air through the breathing valve; on the contrary, when the internal pressure of the oil tank is too low, the outside air will enter the oil tank through the breathing valve. The breathing valve adjusts the internal pressure of the oil tank through breathing to protect the safety of the storage tank.

[0003] At present, the frequency of inspection, maintenance and upkeep of oil tank breathing valves is very high, generally once a month, and twice a month in winter, which is one of the key tasks of mechanics. When inspecting the breathing valve currently used, it is necessary to first remove the breathing valve, then move the breathing valve to the designated area for inspection, and then reinstall it after the inspection is correct.

[0004] Therefore, there are several problems in the detection, maintenance and maintenance of large-size breathing valves:

[0005] 1. When testing the breathing valve currently in use, heavy machinery is required to lift the breathing valve from a high altitude to a designated area for testing, which takes a long time, is costly, and inefficient. In addition, there are major safety hazards and a low safety factor during operation.

[0006] 2. The existing large-sized breathing valve cover is complicated and cumbersome when disassembling and assembling the breathing valve. After the inspection is completed, the valve cover needs to be reinstalled on the valve body and the connection holes need to be aligned. The large-sized breathing valve cover is heavy, and the work efficiency and operation safety are low when workers disassemble and assemble the valve cover;

[0007] 3. The existing breathing valve is prone to frost and freezing in winter, which makes the valve stem and other key parts in the valve fail, causing the breathing valve to not work properly;

[0008] 4. The valve disc and diaphragm are easy to wear during operation and have a short service life. Summary of the invention

[0009] The utility model provides an antifreeze type breath-resistance integrated breathing valve, which overcomes the deficiencies of the above-mentioned prior art and can effectively solve the existing problems of being time-consuming and labor-intensive, having low construction efficiency and having potential safety hazards.

[0010] The technical scheme of the utility model is realized through the following measures: an antifreeze type breath-resistance integrated breathing valve, comprising a valve body, a valve cover, a valve core, and a flame arrester. A valve cover is installed on the top of the valve body, a flame arrester is installed on the left side of the valve body and the fire arrester is connected to the inside and outside of the valve body. A valve core is arranged inside the valve body, and the valve core can be taken out as a whole. The valve core comprises a valve seat, an upper cover, a negative pressure component and a positive pressure component. An annular baffle is integrated into the valve body, the left side of the annular baffle is integrally connected with the fire arrester tube, the outer side of the annular baffle is fixed to the inner side of the valve body through a bracket, an arc cavity is formed between the annular baffle and the valve body, a valve seat is seated in the annular baffle, and the valve seat is provided with at least one air outlet that is connected to the inside and outside along the circumference, a positive pressure component is seated on the upper side of the lower end of the valve seat, a negative pressure component is seated on the middle part of the upper side of the valve seat, an upper cover is detachably installed on the upper side of the valve seat, and at least one air inlet that is connected to the inside and outside is provided on the upper part of the upper cover along the circumference, and the air inlet is connected to the arc cavity.

[0011] The following are further optimizations and / or improvements to the above utility model technical solution:

[0012] Preferably, the positive pressure component includes a positive pressure valve stem and a counterweight block, a positive pressure valve disc, a small buffer pad, a small sealing diaphragm, and a small clip arranged in sequence from top to bottom, and the lower end of the positive pressure valve stem passes through the counterweight block, the positive pressure valve disc, the small buffer pad, the small sealing diaphragm, and the small clip in sequence. The negative pressure component includes a negative pressure valve stem and a negative pressure valve disc, a large buffer pad, a large sealing diaphragm, and a large clip arranged in sequence from top to bottom, and the lower end of the negative pressure valve stem passes through the negative pressure valve disc, the large buffer pad, the large sealing diaphragm, and the large clip in sequence, and the lower end of the negative pressure valve stem is sleeved on the outer side of the upper part of the positive pressure valve stem.

[0013] Preferably, a support ring is integrally provided on the inner side of the upper end and the inner side of the lower end of the valve seat, the outer side of the support ring is an inclined surface, an oblique groove is formed between the upper side of the valve seat, the inner side of the lower part of the upper cover and the support ring, and an oblique groove is formed between the inner side of the lower part of the valve seat and the inner side of the support ring.

[0014] Preferably, a sealing ring is provided between the lower side of the upper portion of the valve seat and the upper side of the annular baffle, and a sealing ring is provided between the lower side of the valve seat and the upper side of the lower portion of the annular baffle.

[0015] Preferably, the inner diameter of the inner end of the fire arrester tube is small and the inner diameter of the outer end is large.

[0016] Preferably, it also includes a top screw, which passes through the middle of the valve cover and presses the sealing ring against the upper cover.

[0017] Preferably, it also includes a mist catcher. The mist catcher is provided at the lower end of the valve body. The mist catcher includes an outer shell, a spiral mist catcher, a wire mesh mist catcher, and a long bolt. The spiral mist catcher and the wire mesh mist catcher are alternately provided in the outer shell from top to bottom. The long bolt passes through the outer shell and the middle part of the spiral mist catcher and the wire mesh mist catcher from top to bottom. Nuts are provided at the upper and lower ends of the long bolt.

[0018] Preferably, the valve cover and the valve body are hinged together and mounted together by quick-release bolts.

[0019] Preferably, a handle is installed on the upper side of the upper cover.

[0020] The utility model discloses the structure is reasonable and compact, is easy to use, the valve core is a quick disassembly and assembly integrated type, can be taken out as a whole, is convenient for overall disassembly and assembly, and convenient for checking the rust condition of the valve seat, does not need to carry out heavy equipment lifting operation, improves the safety factor and overall work efficiency, and reduces the detection cost and detection time. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Attached Figure 1 It is a schematic diagram of the front cross-sectional structure of an embodiment of the utility model.

[0022] Attached Figure 2 For attachment Figure 1 An enlarged cross-sectional structural diagram of the valve body is shown in FIG.

[0023] Attached Figure 3 A schematic diagram of the three-dimensional structure of the valve body of the utility model

[0024] The codes in the accompanying drawings are: 1 is the valve body, 2 is the valve cover, 3 is the valve core, 4 is the flame arrester, 5 is the flame arrester tube, 6 is the annular baffle, 7 is the arc cavity, 8 is the air outlet, 9 is the air inlet, 10 is the negative pressure component, 11 is the positive pressure component, 12 is the counterweight, 13 is the positive pressure valve disc, 14 is the small buffer pad, 15 is the small sealing diaphragm, 16 is the small clip, 17 is the positive pressure valve stem, 18 is the negative pressure valve disc, 19 is the large buffer pad, 20 is the large sealing diaphragm, 21 is the large clip, 22 is the negative pressure valve stem, 23 is the support ring, 24 is the oblique groove, 25 is the sealing ring, 26 is the top screw, 27 is the outer shell, 28 is the spiral mist catcher, 29 is the wire mesh mist catcher, 30 is the long bolt, 31 is the quick-release bolt, 32 is the handle, 33 is the upper cover, and 34 is the valve seat. DETAILED DESCRIPTION

[0025] The present invention is not limited by the following embodiments, and specific implementation methods can be determined according to the technical solution of the present invention and actual conditions.

[0026] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached manual. Figure 1 The positional relationships such as front, back, top, bottom, left, and right are described according to the layout directions of the drawings in the specification.

[0027] The present invention is further described below in conjunction with the embodiments and drawings:

[0028] Embodiment 1: As attached Figure 1 , 2As shown in Figure 3, the antifreeze type breathing valve comprises a valve body 1, a valve cover 2, a valve core 3, and a flame arrester 4. The valve cover 2 is installed on the top of the valve body 1, and a flame arrester 4 is installed on the left side of the valve body 1. The flame arrester 4 is installed on the outside of the flame arrester 5. A valve core 3 is arranged inside the valve body 1, and the valve core 3 can be taken out as a whole. The valve core 3 comprises a valve seat 34, an upper cover 33, a negative pressure component 10 and a positive pressure component 11. An annular baffle 6 is arranged inside the valve body 1, and the left side of the annular baffle 6 is connected to the flame arrester 5. The outer side of the plate 6 is fixed to the inner side of the valve body 1 through a bracket, and an arc-shaped cavity 7 is formed between the annular baffle 6 and the valve body 1. A valve seat 34 is seated inside the annular baffle 6. The valve seat 34 is provided with at least one air outlet 8 that passes through inside and outside along the circumference. A positive pressure component 11 is seated on the upper side of the lower end of the valve seat 34, and a negative pressure component 10 is seated on the middle part of the upper side of the valve seat 34. An upper cover 33 is detachably installed on the outer side of the upper side of the valve seat 34. At least one air inlet 9 that passes through inside and outside is provided on the upper part of the upper cover 33 along the circumference, and the air inlet 9 is connected to the arc-shaped cavity 7.

[0029] When in use, the lower part of the valve body 1 is connected to the tank body. When the internal pressure of the tank body is greater than the air pressure, the gas in the tank pushes the positive pressure component 11 upward, so that there is a gap between the positive pressure component 11 and the valve seat 34, and the high-pressure gas is discharged from the gap and the air outlet 8 through the fire-blocking tube 5, thereby releasing the high-pressure gas in the tank; when the pressure in the tank is lower than the external air pressure, the external air pushes the negative pressure component 10 upward from the fire-blocking tube 5 and the air outlet 8, so that there is a gap between the negative pressure component 10 and the valve seat 34, and the external gas enters the tank body through the gap, the air inlet 9, and the arc-shaped cavity 7, thereby ensuring that the pressure in the tank is constant. The valve core 3 of the utility model is an integrally detachable structure. After the valve cover 2 is opened, it can be lifted out as a whole, and the weight is greatly reduced. There is no need for lifting, and the valve seat 34 can also be taken out together for inspection. In the currently used breathing valve, the valve body 1 and the valve seat 34 are integrated, and the valve seat 34 cannot be taken out separately for inspection. The breathing valve needs to be lifted and removed as a whole for inspection. Lifting is not only costly but also has safety hazards. Moreover, the valve seat 34 is located in the valve body 1, which is time-consuming and laborious to inspect. The utility model can lift out the valve core 3 as a whole and then remove the upper cover 33 to inspect the valve seat 34 and other components. The operation is convenient and the inspection efficiency is improved. After the inspection is completed, the valve core 3 is installed in the valve body 1 as a whole. The disassembly and assembly efficiency is high, avoiding the problems of high cost and safety hazards of lifting.

[0030] The above antifreeze type breath-resistance integrated breathing valve can be further optimized and / or improved according to actual needs:

[0031] Embodiment 2: As attached Figure 1 , 2As shown in Figure 3, the positive pressure assembly 11 includes a positive pressure valve stem 17 and a counterweight 12, a positive pressure valve disc 13, a small buffer pad 14, a small sealing diaphragm 15, and a small clip 16 arranged in sequence from top to bottom. The lower end of the positive pressure valve stem 17 passes through the counterweight 12, the positive pressure valve disc 13, the small buffer pad 14, the small sealing diaphragm 15, and the small clip 16 in sequence. The negative pressure assembly 10 includes a negative pressure valve stem 22 and a negative pressure valve disc 18, a large buffer pad 19, a large sealing diaphragm 20, and a large clip 21 arranged in sequence from top to bottom. The lower end of the negative pressure valve stem 22 passes through the negative pressure valve disc 18, the large buffer pad 19, the large sealing diaphragm 20, and the large clip 21 in sequence. The lower end of the negative pressure valve stem 22 is sleeved on the outer side of the upper part of the positive pressure valve stem 17. By arranging a buffer pad between the valve disc and the sealing diaphragm, the impact force caused by the valve disc falling according to its own weight can be buffered, which solves the problem of easy wear of the valve disc and the diaphragm and increases the service life. According to the requirements, the sealing diaphragm is made of all-weather elastic sealing material (such as polytetrafluoroethylene), which has good sealing performance and light weight.

[0032] Embodiment 3: As attached Figure 1 , 2 As shown in Figures 3 and 4, the inner sides of the upper and lower ends of the valve seat 34 are integrally provided with a support ring 23, the outer side of the support ring 23 is an inclined surface, an oblique groove 24 is formed between the upper side of the valve seat 34, the inner side of the lower part of the upper cover 33 and the support ring 23, and an oblique groove 24 is formed between the inner side of the lower part of the valve seat 34 and the inner side of the support ring 23. In winter, the temperature difference between the inside and outside of the valve is large. When the liquid condenses at the valve disc, it will flow into the groove of the valve disc bracket along the oblique mouth to prevent the valve disc from freezing.

[0033] Embodiment 4: As attached Figure 1 , 2 As shown in 3, a sealing ring 25 is provided between the lower side of the upper part of the valve seat 34 and the upper side of the annular baffle 6, and a sealing ring 25 is provided between the lower side of the valve seat 34 and the upper side of the lower part of the annular baffle 6. The sealing ring 25 is provided to increase the sealing performance between the valve seat 34 and the annular baffle 6, so as to prevent the high-pressure gas from being directly connected to the tank without passing through the valve disc.

[0034] Embodiment 5: As attached Figure 1 , 2 As shown in Figure 3, the inner diameter of the inner end of the fire-blocking tube 5 is small and the inner diameter of the outer end is large. By setting the diameter-changing form of the fire-blocking tube 5, the ventilation volume is increased, and the ventilation volume requirement of the breathing valve is guaranteed.

[0035] Embodiment 6: As attached Figure 1 , 2 As shown in 3, it also includes a top screw 26, which passes through the middle of the valve cover 2 and presses the sealing ring 25 with the upper cover 33. The sealing ring 25 is further pressed by setting the top screw 26 to ensure the sealing performance.

[0036] Embodiment 7: As attached Figure 1 , 2As shown in FIG. 3 , the valve body 1 also includes a mist catcher. The mist catcher is provided at the lower end of the valve body 1. The mist catcher includes a housing 27, a spiral mist catcher 28, a wire mesh mist catcher 29, and a long bolt 30. The housing 27 is provided with a spiral mist catcher 28 and a wire mesh mist catcher 29 alternately from top to bottom. The long bolt 30 passes through the housing 27 and the middle of the spiral mist catcher 28 and the wire mesh mist catcher 29 from top to bottom. Nuts are provided at the upper and lower ends of the long bolt 30. The mist catcher absorbs moisture in the storage tank to prevent the valve disc from freezing.

[0037] Embodiment 8: As attached Figure 1 , 2 As shown in Figures 3 and 4, the valve cover 2 is hinged to the valve body 1 and installed together by quick-release bolts 31. The valve cover 2 can be quickly disassembled and opened and closed, and the positioning of the valve cover 2 can be completed by the quick bolts, without the need to repeatedly align the connection holes, thereby improving the work efficiency and safety of workers when disassembling and assembling the valve cover 2.

[0038] Embodiment 9: As attached Figure 1 , 2 As shown in FIG. 3 , a handle 32 is installed on the upper side of the upper cover 33. By providing the handle 32, it is convenient to lift the valve core 3 as a whole, which is convenient for disassembly and assembly.

[0039] The above technical features constitute the embodiments of the present utility model, which have strong adaptability and implementation effect. Non-essential technical features can be added or reduced according to actual needs to meet the requirements of different situations.

Claims

1. An antifreeze type breather valve with integrated breathing resistance, characterized in that The closure of the valve body is provided with a valve cover, and the closure of the valve body is provided with a valve core, and the closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole. The closure of the valve body can be removed as a whole.

2. The antifreeze type breath-resistance integrated breathing valve according to claim 1 is characterized in that The positive pressure component includes a positive pressure valve stem and a counterweight block, a positive pressure valve disc, a small buffer pad, a small sealing diaphragm, and a small clip arranged in sequence from top to bottom, and the lower end of the positive pressure valve stem passes through the counterweight block, the positive pressure valve disc, the small buffer pad, the small sealing diaphragm, and the small clip in sequence. The negative pressure component includes a negative pressure valve stem and a negative pressure valve disc, a large buffer pad, a large sealing diaphragm, and a large clip arranged in sequence from top to bottom, and the lower end of the negative pressure valve stem passes through the negative pressure valve disc, the large buffer pad, the large sealing diaphragm, and the large clip in sequence, and the lower end of the negative pressure valve stem is sleeved on the outer side of the upper part of the positive pressure valve stem.

3. The antifreeze type breath-resistance integrated breathing valve according to claim 2 is characterized in that A support ring is integrally provided on the inner side of the upper end and the lower end of the valve seat. The outer side of the support ring is an inclined surface. An oblique groove is formed between the upper side of the valve seat, the inner side of the lower part of the upper cover and the support ring. An oblique groove is formed between the inner side of the lower part of the valve seat and the inner side of the support ring.

4. The antifreeze type breath-resistance integrated breathing valve according to claim 1, 2 or 3, characterized in that A sealing ring is arranged between the lower side of the upper part of the valve seat and the upper side of the annular baffle, and a sealing ring is arranged between the lower side of the valve seat and the upper side of the lower part of the annular baffle; or / and, the inner diameter of the inner end of the fire arrester tube is small and the inner diameter of the outer end is large.

5. The antifreeze type breath-resistance integrated breathing valve according to claim 4 is characterized in that It also includes a top screw, which passes through the middle of the valve cover and presses the sealing ring against the upper cover.

6. The antifreeze type breath-resistance integrated breathing valve according to claim 1 or 2 or 3 or 5, characterized in that It also includes a mist catcher. The mist catcher is provided at the lower end of the valve body. The mist catcher includes an outer shell, a spiral mist catcher, a wire mesh mist catcher, and a long bolt. The spiral mist catcher and the wire mesh mist catcher are alternately provided in the outer shell from top to bottom. The long bolt passes through the outer shell and the middle parts of the spiral mist catcher and the wire mesh mist catcher from top to bottom. Nuts are provided at the upper and lower ends of the long bolt.

7. The antifreeze type breath-resistance integrated breathing valve according to claim 4 is characterized in that It also includes a mist catcher. The mist catcher is provided at the lower end of the valve body. The mist catcher includes an outer shell, a spiral mist catcher, a wire mesh mist catcher, and a long bolt. The spiral mist catcher and the wire mesh mist catcher are alternately provided in the outer shell from top to bottom. The long bolt passes through the outer shell and the middle parts of the spiral mist catcher and the wire mesh mist catcher from top to bottom. Nuts are provided at the upper and lower ends of the long bolt.

8. The antifreeze type breath-resistance integrated breathing valve according to claim 1 or 2 or 3 or 5 or 7, characterized in that The valve cover is hinged to the valve body and installed together through quick-release bolts; or / and, a handle is installed on the upper side of the upper cover.

9. The antifreeze type breath-resistance integrated breathing valve according to claim 4 is characterized in that The valve cover is hinged to the valve body and installed together through quick-release bolts; or / and, a handle is installed on the upper side of the upper cover.

10. The antifreeze type breathing valve with integrated breathing resistance according to claim 6, characterized in that The valve cover is hinged to the valve body and installed together through quick-release bolts; or / and, a handle is installed on the upper side of the upper cover.

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