Quick discharge valve integrated with safety valve and valve device

Abstract

The utility model relates to a quick discharge valve, in particular to a quick discharge valve integrated with a safety valve and a valve device, and aims to solve the technical problems that in the prior art, on the premise that quick discharge and overpressure prevention are guaranteed, the quick discharge valve and the safety valve are relatively independently installed on a shell, the occupied installation space is large, and the installation process is tedious. The quick-release valve comprises a quick-release valve shell, a quick-release valve core, a quick-release valve body and a safety valve assembly, the quick discharge valve body is installed in the quick discharge valve shell, a first cavity is formed between the inner end of the quick discharge valve body and the quick discharge valve shell, and the quick discharge valve element is arranged in the first cavity. A safety valve inlet, a safety valve mounting cavity and a safety valve outlet which are sequentially communicated are formed in the quick discharge valve body, and the safety valve inlet is communicated with the first cavity; the safety valve assembly is mounted in the safety valve mounting cavity; the opening preset pressure value of the safety valve assembly is equal to the preset safety pressure value of the first cavity; and an outlet of the safety valve is communicated with a quick discharge channel on the quick discharge valve body.

Description

TECHNICAL FIELD

[0001] The utility model relates to a quick exhaust valve, concretely relates to a quick exhaust valve integrated with a safety valve and a valve device. BACKGROUND

[0002] The quick exhaust valve is an important pneumatic component, which can realize quick exhaust, and the safety valve is a kind of special valve, which can realize overpressure prevention. Currently, the common valve body structure is designed to be independently installed on the shell of the main valve (such as a proportional valve) for the quick exhaust valve and the safety valve, but this design has the problems of large volume, large occupied installation space and complicated installation process.

[0003] The utility model discloses a quick exhaust quick plug type connector, which includes a valve body, a valve cavity is arranged in the valve body, an air inlet, an air outlet and an exhaust port are arranged on the valve body and communicated with the valve cavity, a valve seat is arranged between the air outlet and the exhaust port, the valve seat is provided with a shaft through hole, a valve core is arranged between the valve seat and the air inlet, the air inlet is fixedly provided with an air inlet connector, the air outlet is fixedly provided with an air outlet connector, a rear cover is further arranged on the valve body, an adjusting screw is arranged on the rear cover, the front end of the adjusting screw penetrates through the rear cover and extends into the shaft through hole, the front end of the adjusting screw is provided with a tapered surface matched with the shaft through hole, a sound-absorbing filter element corresponding to the exhaust port is arranged between the valve seat and the rear cover, and the sound-absorbing filter element is arranged outside the adjusting screw.

[0004] The utility model discloses a low pressure gas quick exhaust valve, which includes a valve body, a valve core and an end connector, a gas cavity is arranged in the valve body for the reciprocating sliding of the valve core, a gas inlet is arranged at one end of the valve body for the system gas pressure to enter the gas cavity, the gas inlet is communicated with the gas cavity, the other end of the valve body is provided with the end connector, the end connector is provided with a gas discharge port, a gas outlet is arranged at the radial position of the valve body for the system gas pressure to enter the SDV executor, the gas outlet is communicated with the gas cavity, the valve core is provided with a lip-shaped valve seat, the lip-shaped valve seat is tightly attached to the inner wall of the valve body, the end connector is a hollow structure and forms a discharge channel for discharging low pressure gas, and the end connector is inserted into the valve body and fixed in the gas cavity at one end.

[0005] However, the above two utility models do not solve the problems of the relatively independent installation of the quick exhaust valve and the safety valve on the shell of the main valve (such as a proportional valve), the large volume, the large occupied installation space and the complicated installation process. UTILITY MODEL CONTENTS

[0006] The utility model discloses a quick exhaust valve integrated with a safety valve and a valve device.

[0007] To achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0008] A quick exhaust valve integrated with a safety valve, comprising a quick exhaust valve shell, a quick exhaust valve spool and a quick exhaust valve body, wherein the quick exhaust valve shell is provided with a cavity, the quick exhaust valve body is installed in the cavity of the quick exhaust valve shell, a first cavity is formed between the inner end of the quick exhaust valve body and the quick exhaust valve shell, the quick exhaust valve spool is arranged in the first cavity, and the quick exhaust valve shell is provided with a communication port communicating with the first cavity.

[0009] The utility model has the advantages of the following:

[0010] Further comprising a safety valve assembly;

[0011] The quick exhaust valve body is provided with a safety valve inlet, a safety valve mounting cavity and a safety valve outlet which are sequentially communicated, and the safety valve inlet communicates with the first cavity.

[0012] The safety valve assembly is installed in the safety valve mounting cavity.

[0013] The opening preset pressure value of the safety valve assembly is equal to the preset safety pressure value of the first cavity.

[0014] The safety valve outlet communicates with the quick exhaust passage on the quick exhaust valve body, or the quick exhaust valve body is provided with a safety valve exhaust passage, and the safety valve outlet communicates with the safety valve exhaust passage.

[0015] Further, the safety valve assembly comprises a safety valve spool, an elastic component and a safety valve seat.

[0016] The safety valve spool is located in the safety valve mounting cavity, and the tail end thereof is movably installed on the safety valve seat; the safety valve inlet communicates with one end of the safety valve mounting cavity and corresponds to the front end portion of the safety valve spool.

[0017] The safety valve seat is installed at the other end of the safety valve mounting cavity and is fixedly connected with the quick exhaust valve body.

[0018] The elastic component is arranged between the safety valve spool and the safety valve seat and is used for providing the opening preset pressure value of the safety valve assembly.

[0019] Further, the safety valve assembly further comprises a sealing member made of rubber, which is installed on the front end portion of the safety valve spool close to one side of the safety valve inlet.

[0020] Further, the safety valve seat is fixedly connected with the quick exhaust valve body by screwing.

[0021] Further, the tail end of the safety valve spool is a rod part.

[0022] The rod part is in sliding fit with a guide hole on the safety valve seat, and a third sealing ring is arranged between the outer periphery of the rod part and the inner periphery of the guide hole; and an air vent hole in communication with the outside is arranged at the outer end of the guide hole.

[0023] The elastic part is sleeved on the rod part, and one end of the elastic part abuts against a boss arranged at the front end of the safety valve spool, and the other end of the elastic part abuts against the safety valve seat.

[0024] Further, the quick exhaust passage comprises a first passage section and a second passage section.

[0025] The first passage section extends along the axial direction of the quick exhaust valve body, and one end of the first passage section is in communication with the first cavity, and the other end is in communication with one end of the second passage section.

[0026] The second passage section extends along the radial direction of the quick exhaust valve body, and the other end of the second passage section penetrates through the outer periphery of the quick exhaust valve body and is in communication with the outer vent hole arranged on the quick exhaust valve shell.

[0027] The safety valve outlet is in communication with the second passage section.

[0028] Further, the safety valve outlet is coaxial with the second passage section.

[0029] Further, a first sealing ring and a second sealing ring are arranged between the outer periphery of the quick exhaust valve body and the inner periphery of the quick exhaust valve shell; and the outer vent hole is located between the first sealing ring and the second sealing ring.

[0030] Further, the quick exhaust valve spool is made of rubber.

[0031] Meanwhile, the utility model also provides a valve device, including main valve, its special place lies in: still include above-mentioned integrated safety valve's quick exhaust valve;The shell of quick exhaust valve and the shell of main valve are integral structure;The first cavity and the second cavity arranged on main valve are communicated, and the quick exhaust valve spool is used for controlling the on-off of the second cavity and the communication port of main valve and the on-off of the communication port and quick exhaust passage.

[0032] The utility model has the beneficial effects that compared with prior art:

[0033] 1、The integrated safety valve's quick exhaust valve of the utility model integrates the safety valve assembly on the quick exhaust valve body, realizes module integration, is small in size and convenient to install under the premise of ensuring the functions of quick exhaust and anti-overpressure.

[0034] 2, the valve device of the utility model, set up the shell of quick exhaust valve and the shell of main valve are integrated structure, and integrate safety valve assembly on quick exhaust valve valve body, realize module integration under the premise of ensuring quick exhaust, anti overpressure function, small size, convenient to install. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is structural schematic view of main valve of the utility model one kind valve device embodiment when carrying out exhaust operation;

[0036] Figure 2 It is structural schematic view of main valve of the utility model one kind valve device embodiment when carrying out intake operation;

[0037] Figure 3 It is structural schematic view of safety valve assembly of the utility model one kind valve device embodiment when closing;

[0038] Figure 4 It is structural schematic view of safety valve assembly of the utility model one kind valve device embodiment when opening.

[0039] The following is explained:

[0040] 1-quick exhaust valve shell, 11-outer leak hole, 2-quick exhaust valve spool, 3-quick exhaust valve valve body, 31-quick exhaust passage, 311-first passage section, 312-second passage section, 32-safety valve inlet, 33-safety valve mounting cavity, 34-safety valve outlet, 4-safety valve assembly, 41-safety valve spool, 42-elastic component, 43-safety valve seat, 44-sealing element, 5-first cavity, 6-second cavity, 7-communication port, 8-first sealing ring, 9-second sealing ring, 10-main valve, 101-shell. DETAILED DESCRIPTION

[0041] In order to make the purpose, advantages and characteristics of the utility model more clear, the following will be further described in detail the integrated safety valve quick exhaust valve and valve device of the utility model combining with the drawings and specific embodiments.

[0042] In the description of the utility model, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected;It can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0043] In the description of the utility model, it should be pointed out that, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0044] Reference Figures 1 to 4 The utility model discloses a valve device includes main valve 10 and integrated safety valve's quick -release valve, and main valve 10 is proportional valve, and integrated safety valve's quick -release valve includes quick -release valve casing 1, quick -release valve spool 2 and quick -release valve valve body 3, and quick -release valve casing 1 with the casing 101 of proportional valve is integral structure.

[0045] As Figure 1 Shown, the cavity is provided in quick -release valve casing 1, and quick -release valve valve body 3 is installed in the cavity of quick -release valve casing 1, and the outer periphery between quick -release valve valve body 3 and the inner periphery of quick -release valve casing 1 is provided with first sealing ring 8 and second sealing ring 9, and first sealing ring 8 and second sealing ring 9 are O -ring, and the inner end between quick -release valve valve body 3 and quick -release valve casing 1 constitutes first cavity 5, and first cavity 5 is communicated with the second cavity 6 set up on main valve 10, and the communication port 7 in communication with first cavity 5 is set up on quick -release valve casing 1. Figure 3 And 4 Shown, quick -release passage 31 is set up on quick -release valve valve body 3, and quick -release passage 31 includes first channel section 311 and second channel section 312, and first channel section 311 extends along the axial direction of quick -release valve valve body 3, and one end outside of first channel section 311 is communicated with first cavity 5, and the other end of first channel section 311 is communicated with one end of second channel section 312, and second channel section 312 extends along the radial direction of quick -release valve valve body 3, and the other end of second channel section 312 penetrates to the outer peripheral surface of quick -release valve valve body 3 and is communicated with the outer leak hole 11 set up on quick -release valve casing 1, and the outer leak hole 11 is located between first sealing ring 8 and second sealing ring 9. Quick -release valve spool 2 is of rubber material, and quick -release valve spool 2 is set up in first cavity 5, and the quick -release valve spool 2 of rubber material forms the one-way sealing structure due to its shape structure, as Figure 2 Shown, when gas flows from left to right, quick -release valve spool 2 edge is inwards forced to contract, and gas flows through, as Figure 1 Shown, when gas flows from right to left, quick -release valve spool 2 edge is outwards forced to stretch, and is extruded with quick -release valve casing 1 to form sealing, and gas cannot pass through.

[0046] As Figure 1 And Figure 2 Shown, when main valve 10 carries out admission operation, gas enters second cavity 6, and quick -release valve spool 2 is pushed right, and quick -release valve spool 2 moves to as Figure 2When the fast discharge valve is in the position shown in the figure, the fast discharge valve spool 2 is sealed with the left end face of the fast discharge valve body 3, so that the gas cannot enter the second passage section 312 through the first passage section 311, and the edge of the fast discharge valve spool 2 is deformed under the action of the gas pressure, so that the gas enters the communication port 7 through the first cavity 5; when the main valve 10 is operated to discharge, the gas pressure in the second cavity 6 decreases, and when the gas pressure in the second cavity 6 is lower than the gas pressure in the first cavity 5, the fast discharge valve spool 2 moves to the left under the action of the gas pressure, and the edge of the fast discharge valve spool 2 is sealed with the fast discharge valve housing 1 (as shown in Figure 1 the figure), so that the gas cannot enter the second cavity 6 from the first cavity 5, and at the same time, the seal between the fast discharge valve spool 2 and the left end face of the fast discharge valve body 3 is removed, so that the first cavity 5 is communicated with the first passage section 311 of the fast discharge passage 31, and the gas enters the second passage section 312 from the communication port 7 through the first cavity 5 and the first passage section 311. The above structure realizes the functions of separating the intake and discharge and fast discharging through the fast discharge valve spool 2.

[0047] In order to avoid damage to the valve body structure caused by excessive intake pressure, Figure 3 and Figure 4 As shown in the figures, the fast discharge valve integrated with the safety valve further comprises a safety valve assembly 4, the fast discharge valve body 3 is provided with a safety valve inlet 32, a safety valve mounting cavity 33 and a safety valve outlet 34 which are sequentially communicated, the safety valve inlet 32 is communicated with the first cavity 5, the safety valve outlet 34 is communicated with the second passage section 312 of the fast discharge passage 31, and the safety valve outlet 34 is coaxially arranged with the second passage section 312, the safety valve assembly 4 is installed in the safety valve mounting cavity 33, and the opening preset pressure value of the safety valve assembly 4 is equal to the preset safety pressure value of the first cavity 5.

[0048] The safety valve assembly 4 comprises a safety valve spool 41, an elastic component 42, a safety valve valve seat 43 and a sealing member 44, the safety valve spool 41 is located in the safety valve mounting cavity 33, the safety valve inlet 32 is communicated with one end of the safety valve mounting cavity 33 and corresponds to the front end of the safety valve spool 41, the sealing member 44 made of rubber is installed on the side of the front end of the safety valve spool 41 close to the safety valve inlet 32, the safety valve valve seat 43 is installed at the other end of the safety valve mounting cavity 33, and the safety valve valve seat 43 is fixedly connected with the fast discharge valve body 3 by screw connection, the tail end of the safety valve spool 41 is a rod portion, the rod portion is slidingly matched with a guide hole on the safety valve valve seat 43, and a third sealing ring is arranged between the outer periphery of the rod portion and the inner periphery of the guide hole, an air hole communicated with the outside is arranged at the outer end of the guide hole, the elastic component 42 is used to provide the opening preset pressure value of the safety valve assembly 4, the elastic component 42 is a spring, the spring is sleeved outside the rod portion, one end of the spring abuts against the boss arranged on the front end of the safety valve spool 41, and the other end of the spring abuts against the safety valve valve seat 43.

[0049] The opening preset pressure value of the safety valve assembly 4 is equal to the preset safety pressure value of the first cavity 5, so that when the pressure in the first cavity 5 does not exceed the opening preset pressure value of the safety valve assembly 4, as shown in Figure 3 The sealing member 44 blocks the safety valve inlet 32 and blocks the communication between the safety valve inlet 32 and the safety valve outlet 34 under the elastic force of the spring; and when the pressure in the first cavity 5 exceeds the opening preset pressure value of the safety valve assembly 4, as shown in Figure 4 The sealing member 44 is moved away from the position of blocking the safety valve inlet 32 under the pushing of the gas to overcome the elastic force of the spring, so that the safety valve inlet 32 is communicated with the safety valve outlet 34, and then the gas in the first cavity 5 can be directly discharged into the atmosphere through the safety valve inlet 32, the safety valve mounting cavity 33, the safety valve outlet 34, the second channel section 312 and the vent hole 11, so that the pressure in the first cavity 5 is reduced.

[0050] The valve device of the utility model, set up the shell 1 of quick discharge valve and the shell 101 of main valve 10 are integral structure, and safety valve assembly 4 is integrated on quick discharge valve valve body 3, under the premise of guaranteeing quick discharge, anti-overpressure function, realized module integration, small size, easy to install.

[0051] In other embodiments, the main valve 10 can also be a switch valve, etc.; the quick discharge valve valve body 3 is provided with a safety valve exhaust passage, and the safety valve outlet 34 is communicated with the safety valve exhaust passage.

[0052] Finally, it should be noted that: the above examples are only used to illustrate the technical scheme of the utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the specific technical scheme recorded in the foregoing examples, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical scheme deviate from the scope of the technical scheme of the utility model.

Claims

1. An integrated safety valve quick release valve, comprising a quick release valve housing (1), a quick release valve spool (2) and a quick release valve body (3); the quick release valve housing (1) is provided with a cavity, the quick release valve body (3) is installed in the cavity of the quick release valve housing (1), the inner end of the quick release valve body (3) and the quick release valve housing (1) form a first cavity (5), the quick release valve spool (2) is arranged in the first cavity (5), and the quick release valve housing (1) is provided with a communication port (7) in communication with the first cavity (5); Characterized in that: It further comprises a safety valve assembly (4); The quick release valve body (3) is provided with a safety valve inlet (32), a safety valve mounting cavity (33) and a safety valve outlet (34) which are sequentially communicated, and the safety valve inlet (32) is in communication with the first cavity (5); The safety valve assembly (4) is installed in the safety valve mounting cavity (33); The opening preset pressure value of the safety valve assembly (4) is equal to the preset safety pressure value of the first cavity (5); The safety valve outlet (34) is in communication with the quick release passage (31) on the quick release valve body (3); or the quick release valve body (3) is provided with a safety valve exhaust passage, and the safety valve outlet (34) is in communication with the safety valve exhaust passage.

2. The integrated safety valve quick release valve according to claim 1, characterized in that: The safety valve assembly (4) comprises a safety valve spool (41), an elastic component (42) and a safety valve seat (43); The safety valve spool (41) is located in the safety valve mounting cavity (33), and the tail end thereof is movably installed on the safety valve seat (43); the safety valve inlet (32) is in communication with one end of the safety valve mounting cavity (33) and corresponds to the front end of the safety valve spool (41); The safety valve seat (43) is installed at the other end of the safety valve mounting cavity (33) and is fixedly connected with the quick release valve body (3); The elastic component (42) is arranged between the safety valve spool (41) and the safety valve seat (43) and is used for providing the opening preset pressure value of the safety valve assembly (4).

3. The integrated safety valve quick release valve according to claim 2, characterized in that: The safety valve assembly (4) further comprises a sealing member (44) made of rubber, which is installed on the front end of the safety valve spool (41) and close to the safety valve inlet (32).

4. The integrated safety valve quick release valve according to claim 2, characterized in that: The safety valve seat (43) is fixedly connected with the quick release valve body (3) in a threaded connection manner.

5. The integrated safety valve quick release valve according to claim 2, characterized in that: The tail end of the safety valve spool (41) is a rod portion; The rod portion is in sliding fit with a guide hole on the safety valve seat (43), and a third sealing ring is arranged between the outer periphery of the rod portion and the inner periphery of the guide hole; and an air vent hole in communication with the outside is arranged at the outer end of the guide hole. The elastic component (42) is sleeved outside the rod portion, and one end of the elastic component (42) abuts against a boss arranged at the front end portion of the safety valve spool (41), and the other end abuts against the safety valve seat (43).

6. The integrated safety valve quick release valve according to any one of claims 1-5, characterized in that: The quick release passage (31) comprises a first passage section (311) and a second passage section (312); The first passage section (311) extends along the axial direction of the quick release valve valve body (3), and one end of the first passage section (311) is in communication with the first cavity (5) outside, and the other end is in communication with one end of the second passage section (312); The second passage section (312) extends along the radial direction of the quick release valve valve body (3), and the other end penetrates to the outer peripheral surface of the quick release valve valve body (3) and is in communication with the outer leakage hole (11) arranged on the quick release valve housing (1); The safety valve outlet (34) is in communication with the second passage section (312).

7. The integrated safety valve quick release valve according to claim 6, characterized in that: The safety valve outlet (34) is arranged coaxially with the second passage section (312).

8. The integrated safety valve quick release valve according to claim 6, characterized in that: The outer periphery of the quick release valve valve body (3) and the inner periphery of the quick release valve housing (1) are provided with a first sealing ring (8) and a second sealing ring (9); The outer leakage hole (11) is located between the first sealing ring (8) and the second sealing ring (9).

9. The integrated safety valve quick release valve according to claim 1, characterized in that: The quick release valve spool (2) is made of rubber material.

10. A valve device comprising a main valve (10), characterized in that: Further comprising the integrated safety valve quick release valve according to any one of claims 1-9; The quick release valve housing (1) and the housing (101) of the main valve (10) are integrated structures; The first cavity (5) is in communication with the second cavity (6) arranged on the main valve (10), the quick release valve spool (2) is used to control the opening and closing of the second cavity (6) of the main valve (10) and the communication port (7), and the opening and closing of the communication port (7) and the quick release passage (31).

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