Parallel integrated pressure release valve

Abstract

The utility model discloses a parallel integrated pressure release valve, which relates to the technical field of pressure release valves, and comprises a valve body, a water delivery channel is arranged in the valve body, and a drainage channel is arranged at the water inlet end of the water delivery channel; the first valve element assembly is used for controlling on-off of the water conveying channel; the first assembly cavity is formed in the valve body; the second valve element assembly comprises a valve element, a through hole is formed in the axis position of the valve element, and the through hole communicates with the first assembly cavity and the drainage channel; the second valve rod is connected with the valve body through a pressure sensing spring and connected with a sealing gasket. According to the parallel integrated pressure release valve, the technical problem that a pre-filter is prone to explosion and bottle explosion risks under the extreme conditions of freezing, water hammer, large pressure and the like due to the fact that a switch valve can only play a role in preventing media from entering and exiting is solved; and water is drained to the drainage channel through the second valve element assembly, so that the phenomenon that the bottle is exploded due to overlarge internal pressure of the pre-filter is prevented.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure relief valve technical field, especially in parallel integrated pressure relief valve. BACKGROUND

[0002] With the continuous improvement of living standards, people's demand for water quality is higher and higher, by installing pre-filter in water well or kitchen and other household pipelines to ensure the intelligent water use equipment and water purification demand. Among them, the on-off valve and pressure relief valve are indispensable in the pre-filter, when using the pre-filter, the water flow needs to be controlled through the on-off valve, the efficiency of water treatment is improved, and the normal operation of the pre-filter is ensured.

[0003] However, the on-off valve used in water treatment in the prior art can only prevent the medium from entering and exiting, which leads to the risk of burst and explosion of the pre-filter under extreme conditions such as freezing, water hammer and high pressure, thereby affecting the service life of the pre-filter. On the other hand, the existing pressure relief valve is large in size and complex in structure, and is difficult to be combined with the household pre-filter. Therefore, a parallel integrated pressure relief valve is proposed to solve the above problems. SUMMARY

[0004] The utility model aims at providing a kind of parallel integrated pressure relief valve, solve the technical problem that the on-off valve used in water treatment in prior art can only prevent the medium from entering and exiting, which leads to the risk of burst and explosion of the pre-filter under extreme conditions such as freezing, water hammer and high pressure.

[0005] To achieve the above purpose, the utility model provides a kind of parallel integrated pressure relief valve, comprising: valve body, the inside of the valve body is equipped with water delivery channel for passing through medium, the water inlet end of the water delivery channel is provided with flow channel;

[0006] First valve core assembly, be equipped in the water delivery channel, for controlling the on-off of the water delivery channel;

[0007] First assembly cavity, be equipped in the inside of the valve body;

[0008] Second valve core assembly, comprising: valve core, be equipped in the inside of the first assembly cavity, the axis position of the valve core is provided with through-hole, the through-hole is connected with the first assembly cavity and the flow channel;

[0009] Second valve rod, be equipped in the inside of the first assembly cavity, through pressure spring connection the valve body, the second valve rod connects sealing gasket, the sealing gasket is used to block the flow channel.

[0010] Preferably, a pressure regulating nut is threadedly connected in the first assembly cavity, and an annular groove is arranged on an end face of an end of the pressure regulating nut close to the water delivery passage, the annular groove being snap-connected to a first end of the pressure sensitive spring, and a second end of the pressure sensitive spring being connected to the second valve rod.

[0011] Preferably, an annular boss is integrally arranged on an end of the second valve rod close to the sealing gasket, and a side face of the annular boss is connected to the second end of the pressure sensitive spring.

[0012] Preferably, a first assembly snap groove is arranged on a peripheral side face of an end of the pressure regulating nut away from the water delivery passage, and a first sealing ring is sleeved and arranged in the first assembly snap groove, the first sealing ring being used to seal a gap between the pressure regulating nut and an inner side wall of the first assembly cavity.

[0013] Preferably, a boss face is arranged on an end face of an end of the drainage passage close to the sealing gasket, and the boss face is attached to the sealing gasket.

[0014] Preferably, the first valve core assembly comprises a second assembly cavity arranged in the water delivery passage, and a ball valve is arranged in the second assembly cavity, a side face of the ball valve being connected to a first valve rod, the first valve rod being used to drive the ball valve to rotate around an axis of the first valve rod to control opening and closing of the water delivery passage.

[0015] Preferably, two limiting sealing rings are arranged in the second assembly cavity, the two limiting sealing rings being arranged at an upper portion of the ball valve and a lower portion of the ball valve respectively.

[0016] Preferably, an assembly port is arranged on a lower end portion of the valve body, and a plugging head is threadedly connected to the assembly port, an upper end portion of the plugging head abutting against the limiting sealing ring at the lower portion of the ball valve.

[0017] Preferably, a drainage passage is arranged on the lower portion of the valve body, and the drainage passage is communicated with a water outlet end of the water delivery passage and an inside of the valve core.

[0018] Preferably, a first water outlet and a second water outlet are arranged on a lower portion of the drainage passage, a first sealing plug is threadedly connected to the first water outlet, and a drainage quick connector is threadedly connected to the second water outlet, the drainage quick connector being used to drain wastewater received by the drainage passage.

[0019] With reference to the above background art, the parallel integrated pressure relief valve has the following beneficial effects: the first valve core assembly and the second valve core assembly are connected in parallel in the valve body, and the two work independently, the first valve core assembly controls the opening and closing of the water delivery channel, prevents the medium from entering and leaving, and ensures that the impurities in the pre-filter can be discharged in time, the second valve core assembly accurately senses the pressure received by the pre-filter, when the pressure inside the pre-filter is higher than the set pressure, that is, the pressure of the water inlet end of the water delivery channel is higher than the set pressure, the water flow pushes the sealing gasket away from the left end face of the through hole, and the water flow is discharged after entering the valve core, thereby preventing the pre-filter from exploding under extreme conditions such as freezing, water hammer and high pressure, and prolonging the service life of the pre-filter. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0021] Figure 1 The cross-sectional view of the pressure relief valve provided by the embodiments of the present application is shown in the figure.

[0022] Figure 2 The cross-sectional view of the pressure relief valve provided by the embodiments of the present application is shown in the figure.

[0023] Figure 3 The cross-sectional view of the pressure relief valve provided by the embodiments of the present application is shown in the figure.

[0024] Figure 4 The cross-sectional view of the valve body provided by the embodiments of the present application is shown in the figure.

[0025] Figure 5 The cross-sectional view of the pressure relief valve provided by the embodiments of the present application is shown in the figure.

[0026] Figure 6 The cross-sectional view of the valve core provided by the embodiments of the present application is shown in the figure.

[0027] Figure 7 The cross-sectional view of the second valve rod provided by the embodiments of the present application is shown in the figure.

[0028] Figure 8 The cross-sectional view of the plugging head provided by the embodiments of the present application is shown in the figure.

[0029] Figure 9The cross section schematic view of the first valve rod is provided in the embodiments of the present utility model.

[0030] Figure 10 The three-dimensional structure view of the ball valve is provided in the embodiments of the present utility model.

[0031] Specifically, 1-valve body; 2-water delivery channel; 3-drainage channel; 4-first assembly cavity; 401-second drainage hole; 5-valve core; 501-through hole; 502-tub face; 503-first drainage hole; 6-pressure regulating nut; 601-annular groove; 602-first assembly clamping groove; 603-first sealing ring; 604-guide hole; 7-first sealing plug; 8-assembly hole; 9-second valve rod; 901-annular boss; 902-second assembly clamping groove; 903-second sealing ring; 904-connection clamping groove; 10-pressure sensing spring; 11-sealing gasket; 12-second assembly cavity; 13-ball valve; 1301-ball valve groove; 1302-first water passage hole; 14-first valve rod; 1401-third assembly clamping groove; 1402-third sealing ring; 1403-strip-shaped protruding rib; 15-limiting sealing ring; 16-assembly opening; 17-plugging head; 1701-fourth assembly clamping groove; 1702-fourth sealing ring; 1703-groove; 1704-second water passage hole; 18-drainage channel; 1801-first water outlet; 1802-second water outlet. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of the present utility model.

[0033] In order for those skilled in the art to better understand the present utility model solutions, the present utility model will be further described in detail below with reference to the drawings and specific embodiments.

[0034] As Figure 1 and Figure 4 shown, in order to achieve the above-mentioned purpose, the present utility model provides a parallel integrated pressure relief valve, comprising: a valve body 1 and a water delivery channel 2 arranged inside the valve body 1, the water delivery channel 2 is arranged at the right end of the valve body 1 and arranged inside the valve body 1 in a vertical direction, the water delivery channel 2 is used for passing through the medium, and the medium includes wastewater and impurities such as silt residues filtered out by a pre-filter.

[0035] The first valve core assembly is arranged in the water delivery channel 2 and is used to control the opening and closing of the water delivery channel 2. When the first valve core assembly is closed, the medium is prevented from entering or exiting. When the first valve core assembly is opened, the impurities in the pre-filter can be discharged through the water delivery channel 2, so that the use of the pre-filter is not affected by too many impurities in the pre-filter, and the pre-filter is prevented from being damaged due to excessive internal pressure.

[0036] It should be noted that the water inlet end of the water delivery channel 2 is provided with a discharge channel 3, and the inside of the valve body 1 is provided with a first assembly cavity 4. The first assembly cavity 4 is arranged at the left end of the valve body 1. The right end of the first assembly cavity 4 is connected to the water inlet end of the water delivery channel 2 through the discharge channel 3. Further, a second valve core assembly is arranged in the first assembly cavity 4. The second valve core assembly includes a valve core 5 arranged in the first assembly cavity 4. Specifically, the valve core 5 is threadedly connected to the right end of the first assembly cavity 4. A through hole 501 is arranged at the axis position of the valve core 5. The through hole 501 connects the first assembly cavity 4 and the discharge channel 3. Further, a second valve rod 9 is arranged in the first assembly cavity 4. The second valve rod 9 is connected to the valve body 1 through a pressure-sensitive spring 10. The right end of the second valve rod 9 is connected to a sealing gasket 11. Specifically, a connecting clamping groove 904 is arranged on the right end surface of the second valve rod 9. The right end of the sealing gasket 11 is embedded in the connecting clamping groove 904. The right end surface of the sealing gasket 11 abuts against the left end surface of the through hole 501. Under the holding action of the pressure-sensitive spring 10, the sealing gasket 11 abuts against the left end surface of the through hole 501 to block the through hole 501. In addition, since the elastic coefficient of the pressure-sensitive spring 10 is a fixed value, when the pressure at the water inlet end of the water delivery channel 2 increases to a certain value, the water in the water delivery channel 2 enters the through hole 501 and holds the sealing gasket 11. The sealing gasket 11 overcomes the holding force of the pressure-sensitive spring 10 and moves away from the left end surface of the through hole 501. At this time, the discharge channel 3 is connected to the first assembly cavity 4 through the through hole 501. The water in the water delivery channel 2 enters the inside of the valve core 5 through the discharge channel 3 and the through hole 501 in sequence and is then discharged, so that the pressure is released.

[0037] As Figure 2 and Figure 3As shown, when the pre-filter needs to be cleaned, the first valve core assembly is opened, and the wastewater and impurities are discharged through the water delivery channel 2. When the pre-filter is in an extreme condition of internal pressure being too large due to freezing, water hammer, and large pressure, the pressure at the water inlet end of the water delivery channel 2 increases, and the water in the water delivery channel 2 enters the through hole 501 and holds the sealing gasket 11, until the sealing gasket 11 overcomes the holding force of the pressure-sensitive spring 10 and leaves the left end surface of the through hole 501. At this time, the water in the water delivery channel 2 enters the valve core 5 through the drainage channel 3 and the through hole 501 and is then discharged, and the internal pressure of the pre-filter is reduced, thereby preventing the pre-filter from exploding due to the internal pressure being too large, and achieving the purpose of protecting the pre-filter.

[0038] In one embodiment of the present application, the left end of the first assembly cavity 4 is designed as an opening, and the left end of the first assembly cavity 4 is threadedly connected to the pressure regulating nut 6. The right end surface of the pressure regulating nut 6 is provided with an annular groove 601, the left end of the pressure-sensitive spring 10 is clamped and connected to the annular groove 601, the right end of the pressure-sensitive spring 10 is connected to the second valve rod 9, and by screwing the pressure regulating nut 6 in the forward direction, the pressure regulating nut 6 moves a certain distance to the right end to further hold the pressure-sensitive spring 10, thereby increasing the holding force of the pressure-sensitive spring 10 on the second valve rod 9, and then by screwing the pressure regulating nut 6 in the reverse direction, the pressure regulating nut 6 moves a certain distance to the left end, thereby reducing the holding force of the pressure-sensitive spring 10 on the second valve rod 9, and further adjusting the size of the set pressure when the pre-filter needs to be relieved, thereby ensuring the optimal use of the pre-filter while ensuring that the internal pressure of the pre-filter can be relieved in time.

[0039] Preferably, an annular boss 901 is arranged at the right end of the second valve rod 9, the left side surface of the annular boss 901 is connected to the right end of the pressure-sensitive spring 10, and the annular boss 901 cooperates with the pressure-sensitive spring 10 to ensure that the pressure-sensitive spring 10 stably holds the second valve rod 9. Moreover, by arranging the annular boss 901 at the right end of the second valve rod 9, the second valve rod 9 can limit the pressure-sensitive spring 10, making the pressure-sensitive spring 10 more stable when it acts.

[0040] As shown in the drawings, Figure 5 The outer peripheral surface of the left end of the pressure regulating nut 6 is provided with a first assembly clamping groove 602, and the first assembly clamping groove 602 is sleeved with a first sealing ring 603. The outer diameter of the first sealing ring 603 is larger than the outer diameter of the pressure regulating nut 6. When the pressure regulating nut 6 is threadedly connected to the first assembly cavity 4, the first sealing ring 603 can tightly adhere to the inner side wall of the first assembly cavity 4, thereby enhancing the sealing strength between the pressure regulating nut 6 and the inner side wall of the first assembly cavity 4, and effectively preventing water from leaking from the first assembly cavity 4.

[0041] As Figure 7 shown, it should be noted that the guide hole 604 is arranged at the axial position of the pressure regulating nut 6, the guide hole 604 is connected with the left end of the second valve rod 9 in a sliding mode, for limiting the movement path of the second valve rod 9, so as to ensure that the second valve rod 9 can stably do piston activity under the action of the water flow and the force of the pressure sensitive spring 10. Meanwhile, the second assembly clamping groove 902 is arranged at the outer peripheral side of the left end of the second valve rod 9, the second sealing ring 903 is arranged in the second assembly clamping groove 902 in a sleeving mode, and the second sealing ring 903 is tightly attached to the inner side wall of the guide hole 604, so as to enhance the sealing strength between the second valve rod 9 and the guide hole 604, and further avoid water leakage from the first assembly cavity 4.

[0042] On the other hand, the boss surface 502 is arranged at the left end surface of the through hole 501, the boss surface 502 can enhance the sealing strength of the sealing gasket 11 and the left end surface of the through hole 501, and when the prefilter does not need to be pressure released, the sealing gasket 11 can achieve the best plugging effect on the through hole 501 under the top-holding action of the second valve rod 9.

[0043] As Figure 9 and Figure 10 shown, in one embodiment of the utility model, the first valve core assembly comprises: the second assembly cavity 12 arranged in the water delivery channel 2, the ball valve 13 arranged in the second assembly cavity 12, the side surface of the ball valve 13 is connected with the first valve rod 14, the right end of the valve body 1 is provided with the assembly hole 8, the assembly hole 8 is coaxially arranged with the first valve rod 14, and the first valve rod 14 is rotationally connected with the assembly hole 8, specifically, the right side surface of the ball valve 13 is provided with the ball valve groove 1301, the ball valve groove 1301 is in strip shape, the left end of the first valve rod 14 is integrally provided with the strip-shaped convex rib 1403, the ball valve groove 1301 can be connected with the strip-shaped convex rib 1403 in a clamping mode, and the first water passing hole 1302 is arranged in the direction perpendicular to the axis of the first valve rod 14, the axis of the first water passing hole 1302 coincides with the ball center of the ball valve, when the first valve rod 14 is screwed to rotate, the ball valve 13 can be driven to rotate around the axis of the first valve rod 14, so as to control the on-off of the water delivery channel 2.

[0044] Further, a plurality of third assembly clamping grooves 1401 are arranged at the outer peripheral side of the first valve rod 14, specifically, the third assembly clamping grooves 1401 are arranged at the outer peripheral side of the first valve rod 14, the third sealing ring 1402 is arranged in the third assembly clamping groove 1401 in a sleeving mode, and the third sealing ring 1402 is tightly attached to the inner side wall of the assembly hole 8, so as to enhance the sealing strength between the first valve rod 14 and the assembly hole 8, and further avoid water leakage from the second assembly cavity 12.

[0045] Preferably, two limiting sealing rings 15 are arranged in the second assembly cavity 12, and the limiting sealing rings 15 are made of elastic material, preferably rubber material. The two limiting sealing rings 15 are arranged at the upper part of the ball valve 13 and the lower part of the ball valve 13 respectively, and the gaps between the ball valve 13 and the second assembly cavity 12 are filled by the limiting sealing rings 15, so as to ensure that the ball valve 13 can completely block the water conveying channel 2.

[0046] As shown in Figure 2 and Figure 8 , the assembly port 16 is arranged at the lower end of the valve body 1, and the assembly port 16 is threadedly connected with the blocking head 17. The upper end of the blocking head 17 abuts against the limiting sealing ring 15 arranged at the lower part of the ball valve 13, so that the two limiting sealing rings 15 can press the ball valve 13, and the blocking effect of the ball valve 13 on the water conveying channel 2 is further improved. Specifically, the recess 1703 is arranged on the upper end surface of the blocking head 17, and the limiting sealing ring 15 can be embedded in the recess 1703. When the blocking head 17 upwardly supports the limiting sealing ring 15, the limiting sealing ring 15 can maintain the overall shape, so that the limiting sealing ring 15 can stably adhere to the surface of the ball valve 13, and the limiting sealing ring 15 can be prevented from moving relative to the surface of the ball valve 13, thereby affecting the blocking effect of the ball valve 13 on the second assembly cavity 12.

[0047] Meanwhile, the fourth assembly clamping groove 1701 is arranged on the outer circumferential surface of the upper end of the blocking head 17 and the outer circumferential surface of the lower end of the blocking head 17, and the fourth sealing ring 1702 is arranged in the fourth assembly clamping groove 1701. The third sealing ring 1402 tightly abuts against the inner side wall of the assembly port 16, so as to enhance the sealing strength between the blocking head 17 and the assembly port 16, and avoid water leakage from the second assembly cavity 12.

[0048] As shown in Figure 4 and Figure 6As shown, in an embodiment of the utility model, the lower part of valve body 1 is equipped with drainage channel 18, drainage channel 18 is connected with the water outlet end of water delivery channel 2 and the inside of valve core 5, it needs to be explained that the axis position of plugging head 17 is hollow structure, and the middle part of plugging head 17 is equipped with second water passing hole 1704, second water passing hole 1704 is connected with drainage channel 18, when the first valve core assembly opens, the waste water and impurities flowing out in water delivery channel 2 enter drainage channel 18 through second water passing hole 1704. The circumferential outside of valve core 5 is arrayed with several first drainage holes 503, the lower part of first assembly cavity 4 is equipped with second drainage hole 401, first drainage hole 503 and second drainage hole 401 are always in the on state, then drainage channel 18 is connected with the inside of valve core 5 through first drainage hole 503 and second drainage hole 401, and the water flowing out from the inside of valve core 5 when the pre-filter pressure relief is received through drainage channel 18. In addition, first water outlet 1801 and second water outlet 1802 are arranged in the lower part of drainage channel 18, first water outlet 1801 and second water outlet 1802 can be used for the discharge of waste water and impurities, generally, first water outlet 1801 is screwed with first sealing plug 7, and second water outlet 1802 is screwed with drainage quick connector (not shown in the figure), and the waste water and impurities received by drainage channel 18 can be discharged to the specified position through the drainage quick connector.

[0049] It needs to be explained that first assembly cavity 4 and second assembly cavity 12 can be designed as horizontal or vertical according to the demand, and the first valve core assembly and the second valve core assembly are adjusted according to the shape and position of first assembly cavity 4 and second assembly cavity 12, so that they can be applied to multiple scenes, can prevent the medium from entering and exiting, and can achieve the purpose of pressure relief. Moreover, the overall pressure relief valve is small in size and simple in structure, can be combined with the household pre-filter for use, and is better in practicality.

[0050] When the utility model is used, the first valve core assembly is opened, the waste water and impurities are discharged to drainage channel 18 through water delivery channel 2, the cleaning of the pre-filter is completed, then the first valve core assembly is closed, the pressure relief valve normally works, when the internal pressure of the pre-filter is too large under the extreme conditions such as freezing, water hammer and large pressure, the pressure of the water inlet end of water delivery channel 2 increases, the water in water delivery channel 2 enters through flow channel 3 into through hole 501, the water pressure in through hole 501 increases to hold sealing gasket 11, until sealing gasket 11 overcomes the holding force of pressure sensitive spring 10 to leave the left end surface of through hole 501, the water in water delivery channel 2 enters into the inside of valve core 5 through flow channel 3 and through hole 501 in turn, and then is discharged from the inside of valve core 5 to drainage channel 18 through first drainage hole 503 and second drainage hole 401, the pressure in the inside of the pre-filter decreases, and the purpose of pressure relief is achieved.

[0051] In summary, by accurately sensing the pressure received by the pre-filter through the second valve core assembly, when the pressure inside the pre-filter is higher than the set pressure, the water flow enters the inside of the valve core 5 and is discharged to the drain channel 18, effectively preventing the pre-filter from bursting under extreme conditions such as freezing, water hammer, and high pressure, thereby prolonging the service life of the pre-filter.

[0052] It should be noted that the relational terms herein, such as first and second, are used solely to distinguish one entity from another without necessarily requiring or implying any actual relationship or order between or among the entities.

[0053] The principles and implementation modes of the present application are described herein by applying specific examples, and the above example descriptions are only used to help understand the method and core idea of the present application. It should be pointed out that for ordinary skilled persons in the art, without departing from the principles of the present application, the present application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A parallel integrated pressure relief valve, characterized by, The utility model relates to a valve body (1), the inside of valve body (1) is equipped with the water delivery channel (2) for passing through medium, the water inlet end of water delivery channel (2) sets up the drain channel (3); First valve core subassembly is equipped in water delivery channel (2), is used for controlling the on-off of water delivery channel (2); First assembly cavity (4) is equipped in the inside of valve body (1); Second valve core subassembly includes: valve core (5) is equipped in the inside of first assembly cavity (4), the axis position of valve core (5) is provided with through -hole (501), through -hole (501) links together first assembly cavity (4) with drain channel (3); Second valve rod (9) is equipped in the inside of first assembly cavity (4), is connected valve body (1) through pressure sensitive spring (10), second valve rod (9) is connected sealing gasket (11), and sealing gasket (11) is used for plugging drain channel (3). The first assembly cavity (4) is screwed with pressure regulating nut (6), the end face of one end of pressure regulating nut (6) near water delivery channel (2) is equipped with annular groove (601), and the first end of pressure sensitive spring (10) is connected in annular groove (601), and the second end of pressure sensitive spring (10) is connected with second valve rod (9).

2. The parallel integrated pressure relief valve according to claim 1, wherein The second valve rod (9) is integrally provided with annular boss (901) on one end near the sealing gasket (11), and the side surface of the annular boss (901) is connected with the second end of the pressure sensitive spring (10).

3. The parallel integrated pressure relief valve of claim 2, wherein The outer circumferential side surface of one end of the pressure regulating nut (6) away from the water delivery channel (2) is provided with a first assembly clamping groove (602), and a first sealing ring (603) is sleeved and arranged in the first assembly clamping groove (602). The first sealing ring (603) is used to seal the gap between the pressure regulating nut (6) and the inner side wall of the first assembly cavity (4).

4. The parallel integrated pressure relief valve according to claim 3, wherein The end face of one end of the drain channel (3) near the sealing gasket (11) is provided with a boss face (502), and the boss face (502) is attached to the sealing gasket (11).

5. A parallel integrated pressure relief valve according to any one of claims 1-4, characterized in that The first valve core subassembly includes: second assembly cavity (12) is equipped in water delivery channel (2), ball valve (13) is arranged in second assembly cavity (12), the side surface of ball valve (13) is connected with first valve rod (14), and first valve rod (14) is used to drive ball valve (13) to rotate around the axis of first valve rod (14) to control the on-off of water delivery channel (2).

6. A parallel integrated pressure relief valve according to any one of claims 1-4, characterized in that Two limit sealing rings (15) are arranged in the second assembly cavity (12), and the two limit sealing rings (15) are arranged at the upper part of the ball valve (13) and the lower part of the ball valve (13) respectively.

7. A parallel integrated pressure relief valve according to claim 6, wherein The lower end of the valve body (1) is provided with an assembly port (16), and the assembly port (16) is screwed with a plugging head (17). The upper end of the plugging head (17) abuts against the limit sealing ring (15) located at the lower part of the ball valve (13).

8. The parallel integrated pressure relief valve of claim 7, wherein, The lower part of the valve body (1) is provided with a drain channel (18), and the drain channel (18) is connected with the water outlet end of the water delivery channel (2) and the inside of the valve core (5).

9. A parallel integrated pressure relief valve according to any one of claims 1-4, wherein ​ 10. The parallel integrated pressure relief valve of claim 9, wherein The lower part of the drain channel (18) is provided with a first water outlet (1801) and a second water outlet (1802), the first water outlet (1801) is threadedly connected with a first sealing plug (7), and the second water outlet (1802) is threadedly connected with a drain quick connector, which is used for draining wastewater received by the drain channel (18).

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