Pressure relief safety valve with pressure discharge mechanism

Abstract

The invention discloses a pressure relief safety valve with a pressure discharge mechanism, and relates to the technical field of valve bodies. The two pressure discharging heads are symmetrically embedded in the left side and the right side of the valve body and fixed to the upper side of the valve body. The supporting frames are of an inverted-L-shaped structure, the number of the supporting frames is two, the supporting frames are symmetrically and fixedly arranged in the upper end of the valve body, and the horizontal ends of the supporting frames are arranged on the upper side of the pressure discharging head. The fixed table is fixedly arranged in the upper end of the valve body, and the fixed table is arranged on the upper side of the supporting frame; the two movable balls are movably inserted into the corresponding pressure discharging heads respectively; the driving assembly is arranged between the left supporting frame and the right supporting frame. The movable plug which is highly elastic is arranged in the valve body, the plug is stressed to block the pressure discharge port, and when the plug is separated from the pressure discharge port due to elastic factors, the pressure discharge port is in a circulating state, so that the purpose of discharging pressure of a medium is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of valve bodies, and in particular to a pressure relief safety valve with a pressure relief mechanism. Background Art

[0002] The pressure relief safety valve is an important safety accessory installed on boilers, pressure vessels and other pressurized equipment. It is mainly used to automatically open and release pressure when the system pressure exceeds the set value to protect the safety of equipment and pipelines. When the safety valve completes the pressure relief action, at the moment the valve closes, a certain amount of high-pressure medium may still remain inside the valve, affecting the use effect of the valve body. Summary of the Invention

[0003] The purpose of the present invention is to address the defects and shortcomings of the existing technology and provide a pressure relief safety valve with a pressure relief mechanism that is simple in structure, reasonably designed, and easy to use. A movable plug with extreme elasticity is arranged inside the valve body, and the pressure relief port is blocked when the plug is subjected to force. When the plug is separated from the pressure relief port due to elastic factors, the pressure relief port is in a flow state, thereby achieving the purpose of discharging the medium pressure.

[0004] To achieve the above object, the present invention adopts the following technical solution: it comprises a valve body, the lower side of the valve body is an inlet, and the right side of the valve body is an outlet;

[0005] Also includes:

[0006] There are two pressure relief heads, which are symmetrically embedded on the left and right sides and fixed on the upper side of the valve body;

[0007] The support frame is an inverted "L" shaped structure, and there are two support frames, which are symmetrically fixed inside the upper end of the valve body, and the horizontal end of the support frame is set on the upper side of the pressure discharge head;

[0008] A fixing platform, wherein the fixing platform is fixedly arranged inside the upper end of the valve body, and the fixing platform is arranged on the upper side of the support frame;

[0009] There are two movable balls, each of which is movably inserted into the corresponding pressure discharge head;

[0010] A drive assembly is provided between the left and right support frames;

[0011] Through the above technical solution design, the driving component drives the movable balls on the left and right sides simultaneously to achieve the purpose of the movable balls entering the pressure discharge head to form a seal, or the movable balls detach from the pressure discharge head to achieve the purpose of making the pressure discharge head hollow and discharging the medium from the pressure discharge head.

[0012] As a further improvement of the present invention, the driving assembly comprises:

[0013] A driving block is disposed between the left and right support frames, and the left and right side walls of the driving block are both inclined from outside to inside and from top to bottom;

[0014] Extrusion blocks, there are two extrusion blocks, which are respectively arranged on the left and right sides of the driving block, and the inner walls of the extrusion blocks are arranged to be inclined from the outside to the inside and from the top to the bottom;

[0015] Connecting rods, there are two connecting rods, which are fixedly arranged on the outside of the extrusion block, and the connecting rods are passed through the vertical ends of the support frame, and the inner ends of the connecting rods are connected to the movable balls;

[0016] No. 1 return spring, there are two No. 1 return springs, each of which is movably sleeved on the corresponding connecting rod, and the No. 1 return spring is arranged between the vertical end of the support frame and the extrusion block, and the left and right ends of the No. 1 return spring are respectively connected to the corresponding vertical end of the support frame and the extrusion block;

[0017] With the above technical solution, when the driving block is driven, the extrusion block is driven by the inclined edges on both sides thereof. At this time, the No. 1 return spring is compressed, and the connecting rod drives the movable ball to be squeezed into the pressure discharge head, and the interior of the pressure discharge head is in a closed state; on the contrary, the driving block moves upward away from the extrusion block, and the No. 1 return spring rebounds, pulling the movable ball out of the pressure discharge head, and the interior of the pressure discharge head is in a flow state.

[0018] As a further improvement of the present invention, a pressing assembly is provided on the upper side of the driving block, and the pressing assembly comprises:

[0019] A moving block, wherein the moving block is fixedly arranged on the upper side of the driving block, and the upper side of the moving block is arranged on the upper side of the fixed platform after moving through the fixed platform;

[0020] A limiting plate, the limiting plate being fixedly arranged on the upper side of the moving block;

[0021] No. 2 return spring, there are two No. 2 return springs, which are respectively arranged on the left and right sides of the moving block, and the upper and lower ends of the No. 2 return springs are respectively connected to the limit plate and the fixed platform;

[0022] A motor bracket, wherein the motor bracket is fixedly arranged on the fixed platform and is arranged on the front side of the moving block, and a rotating motor is arranged on the motor bracket;

[0023] An eccentric wheel is sleeved and fixed on the output end of the rotating motor, and the eccentric wheel is contacted with the upper side of the limit plate;

[0024] Through the above technical solution design, the rotating motor is started to rotate the eccentric wheel. When the eccentric wheel squeezes the limit plate, the No. 2 return spring is compressed, and the moving block drives the driving block to move downward; conversely, when the eccentric wheel rotates away from the limit plate, the No. 2 return spring is reset, and the moving block pulls the driving block to move upward.

[0025] As a further improvement of the present invention, a limiting shell is provided on one side of the movable ball, and the outer ring wall of the limiting shell is connected to the outer end of the connecting rod;

[0026] Through the above technical solution design, the movement of the movable ball is limited to prevent the movable ball from completely entering the pressure discharge head.

[0027] As a further improvement of the present invention, limit rods are provided on both the upper and lower sides of the limit housing, and the limit rods are provided in contact with the inner wall of the valve body;

[0028] By means of the above technical solution, the limiting function of the limiting shell is strengthened.

[0029] As a further improvement of the present invention, the front and rear sides of the driving block are both provided with connecting blocks, and the left and right sides of the connecting blocks are respectively connected to the vertical ends of the support frame; the connecting blocks are symmetrically provided with movable grooves, and the front and rear sides of the extrusion block are both provided with movable platforms, which are respectively slidably arranged in the corresponding movable grooves;

[0030] Through the above technical solution design, the movement of the extrusion block is guided.

[0031] As a further improvement of the present invention, a movable groove is provided inside the movable block, a guide block is movably provided in the movable groove, and the guide block is provided on the lower side of the fixed platform, and the front and rear sides of the guide block are respectively connected to the inner ring wall of the valve body;

[0032] Through the above technical solution design, the movement of the moving block is guided.

[0033] As a further improvement of the present invention, the diameter of the movable ball is greater than or equal to the inner diameter of the pressure discharge head.

[0034] The working principle of the present invention is as follows: start the rotating motor to rotate the eccentric wheel. When the eccentric wheel squeezes the limit plate, the No. 2 spring is compressed, and the movable block drives the driving block to move downward. When the driving block is driven downward, the extrusion block is driven by the inclined edges on both sides. At this time, the No. 1 return spring is compressed, and the connecting rod drives the movable ball to be squeezed and inserted into the pressure discharge head, and the interior of the pressure discharge head is in a closed state; conversely, when the eccentric wheel rotates away from the limit plate, the No. 2 return spring is reset, and the movable block pulls the driving block to move upward. The driving block moves upward away from the extrusion block, and the No. 1 return spring rebounds, pulling the movable ball out of the pressure discharge head. At this time, the interior of the pressure discharge head is in a flow state, and the medium can be discharged to the outside through the pressure discharge head.

[0035] Compared with the prior art, the present invention has the following beneficial effects:

[0036] 1. The left and right side walls of the driving block are inclined to match the side walls of the extrusion block, which facilitates the downward movement of the driving block to squeeze the extrusion block. When the driving block applies force to the extrusion block, the extrusion block can only move outward to squeeze the No. 1 return spring. When the No. 1 return spring is stressed, the connecting rod drives the movable ball to block the pressure head, and the pressure head is in a closed state.

[0037] 2. Only when the driving block moves upward, the force applied to the extrusion block disappears, and the No. 1 reset spring rebounds, pulling the connecting rod to move the rod, so that the movable ball is separated from the pressure discharge head. At this time, the pressure discharge head is in communication with the outside, allowing the medium to be discharged;

[0038] 3. The setting of the limit shell and limit rod on one side of the movable ball is to prevent the movable ball from entering the pressure discharge head completely and causing it to be stuck with the pressure discharge head, so that the movable ball can be rebounded by the No. 1 return spring to separate from the pressure discharge head;

[0039] 4. The movement of the drive block is controlled by the cooperation of the eccentric wheel and the No. 2 return spring. When the eccentric wheel is pressed against the limit plate, the drive block can only move downward to apply force to the extrusion block. When the eccentric wheel is away from the limit plate, the No. 2 return spring rebounds, pulling the drive block upward, causing the extrusion block to rebound, thereby driving the movable ball to separate from the pressure discharge head. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a structural schematic diagram of the present invention.

[0041] Figure 2 It is a schematic diagram of the internal structure of the valve body in the present invention.

[0042] Figure 3 It is a schematic diagram of the connection structure of the press-action component in the present invention.

[0043] Figure 4 It is a schematic diagram of the connection structure of the drive assembly in the present invention.

[0044] Figure 5 It is a schematic diagram of the connection structure between the driving block, the extrusion block and the No. 1 return spring in the present invention.

[0045] Figure 6 It is a schematic diagram of the connection structure between the movable ball, the support frame and the extrusion block in the present invention.

[0046] Description of reference numerals:

[0047] Valve body 1, pressure discharge head 2, support frame 3, fixed platform 4, movable ball 5, drive assembly 6, drive block 6-1, extrusion block 6-2, connecting rod 6-3, No. 1 return spring 6-4, pressing assembly 7, moving block 7-1, limit plate 7-2, No. 2 return spring 7-3, motor bracket 7-4, rotating motor 7-5, eccentric wheel 7-6, limit shell 8, limit rod 9, connecting block 10, moving groove 11, moving platform 12, movable groove 13, guide block 14. DETAILED DESCRIPTION

[0048] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. The preferred embodiments described are only used as examples. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

[0049] Example 1:

[0050] See also Figures 1-6 In this embodiment, it comprises a valve body 1, the lower side of the valve body 1 is an inlet, and the right side of the valve body is an outlet; it also comprises:

[0051] There are two pressure relief heads 2, which are symmetrically embedded and fixed on the upper side of the valve body 1;

[0052] The support frame 3 is an inverted "L"-shaped structure, and there are two support frames 3, which are symmetrically fixed inside the upper end of the valve body 1, and the horizontal end of the support frame 3 is arranged on the upper side of the pressure discharge head 2;

[0053] The fixing platform 4 is fixedly arranged inside the upper end of the valve body 1, and the fixing platform 4 is arranged on the upper side of the support frame 3;

[0054] There are two movable balls 5, each of which is movably inserted into the corresponding pressure relief head 2; the diameter of the movable ball 5 is greater than or equal to the inner diameter of the pressure relief head 2;

[0055] A drive assembly 6, wherein the drive assembly 6 is disposed between the left and right support frames 3;

[0056] Through the above technical solution design, the driving component 6 drives the movable balls 5 on the left and right sides simultaneously to achieve the purpose of the movable balls 5 entering the pressure discharge head 2 to form a seal, or the movable balls 5 detach from the pressure discharge head 2 to achieve the purpose of making the pressure discharge head 2 hollow and discharging the medium from the pressure discharge head 2.

[0057] Example 2:

[0058] See also Figures 1-6 , further improved on the basis of Example 1, the driving component 6 includes:

[0059] The driving block 6-1 is arranged between the left and right support frames 3, and the left and right side walls of the driving block 6-1 are inclined from outside to inside and from top to bottom;

[0060] Extrusion blocks 6-2, there are two extrusion blocks 6-2, which are respectively arranged on the left and right sides of the driving block 6-1, and the inner walls of the extrusion blocks 6-2 are inclined from the outside to the inside and from the top to the bottom; the front and rear sides of the driving block 6-1 are both provided with connecting blocks 10, and the left and right sides of the connecting blocks 10 are respectively connected to the vertical ends of the support frame 3; the connecting blocks 10 are symmetrically provided with movable grooves 11, and the front and rear sides of the extrusion blocks 6-2 are both provided with movable platforms 12, which are respectively slidably inserted into the corresponding movable grooves 11;

[0061] Connecting rods 6-3, there are two connecting rods 6-3, which are fixedly arranged on the outside of the extrusion block 6-2, and the connecting rods 6-3 are passed through the vertical end of the support frame 3. A limit shell 8 is provided on one side of the movable ball 5, and the outer ring wall of the limit shell 8 is connected to the outer end of the connecting rod 6-3; limit rods 9 are provided on the upper and lower sides of the limit shell 8, and the limit rods 9 are in contact with the inner wall of the valve body 1;

[0062] No. 1 return spring 6-4, there are two No. 1 return springs 6-4, which are movably sleeved on the corresponding connecting rods 6-3, and the No. 1 return spring 6-4 is set between the vertical end of the support frame 3 and the extrusion block 6-2, and the left and right ends of the No. 1 return spring 6-4 are respectively connected to the corresponding vertical end of the support frame 3 and the extrusion block 6-2;

[0063] Through the above-mentioned technical solution design, when the driving block 6-1 is driven, the extrusion block 6-2 is driven by the inclined edges on both sides thereof. At this time, the No. 1 return spring 6-4 is compressed, and the connecting rod 6-3 drives the movable ball 5 to be squeezed and inserted into the pressure discharge head 2, and the interior of the pressure discharge head 2 is in a closed state; on the contrary, the driving block 6-1 moves upward away from the extrusion block 6-2, and the No. 1 return spring 6-4 rebounds, pulling the movable ball 5 away from the pressure discharge head 2, and the interior of the pressure discharge head 2 is in a flow state.

[0064] Example 3:

[0065] See also Figures 1-6 , further improved on the basis of Example 1, a pressing component 7 is provided on the upper side of the driving block 6-1, and the pressing component 7 includes:

[0066] The movable block 7-1 is fixedly arranged on the upper side of the driving block 6-1, and the upper side of the movable block 7-1 is arranged on the upper side of the fixed platform 4 after moving through the fixed platform 4; a movable groove 13 is opened inside the movable block 7-1, and a guide block 14 is movably passed through the movable groove 13, and the guide block 14 is arranged on the lower side of the fixed platform 4, and the front and rear sides of the guide block 14 are respectively connected to the inner ring wall of the valve body 1;

[0067] A limit plate 7-2, the limit plate 7-2 is fixedly arranged on the upper side of the moving block 7-1;

[0068] No. 2 return spring 7-3, there are two No. 2 return springs 7-3, which are respectively arranged on the left and right sides of the moving block 7-1, and the upper and lower ends of the No. 2 return spring 7-3 are respectively connected to the limit plate 7-2 and the fixed platform 4;

[0069] The motor bracket 7-4 is fixedly mounted on the fixed platform 4 and is disposed on the front side of the moving block 7-1. The motor bracket 7-4 is provided with a rotating motor 7-5. The specific model of the rotating motor 7-5 is purchased and installed directly from the market according to actual use requirements.

[0070] The eccentric wheel 7-6 is sleeved and fixed on the output end of the rotating motor 7-5, and the eccentric wheel 7-6 is contacted with the upper side of the limit plate 7-2;

[0071] Through the above technical solution design, the rotating motor 7-5 is started to rotate the eccentric wheel 7-6. When the eccentric wheel 7-6 squeezes the limit plate 7-2, the No. 2 return spring 7-3 is compressed, and the moving block 7-1 drives the driving block 6-1 to move downward; conversely, when the eccentric wheel 7-6 rotates away from the limit plate 7-2, the No. 2 return spring 7-3 is reset, and the moving block 7-1 pulls the driving block 6-1 to move upward.

[0072] When the present invention is used, the rotating motor 7-5 is started to rotate the eccentric wheel 7-6. When the eccentric wheel 7-6 squeezes the limit plate 7-2, the No. 2 spring is compressed, and the moving block 7-1 drives the driving block 6-1 to move downward. The driving block 6-1 is driven downward, and the squeezing block 6-2 is driven by the inclined edges on both sides. At this time, the No. 1 return spring 6-4 is compressed, and the connecting rod 6-3 drives the movable ball 5 to be squeezed and inserted into the pressure discharge head 2, and the interior of the pressure discharge head 2 is in a closed state; on the contrary, when the eccentric wheel 7-6 rotates away from the limit plate 7-2, the No. 2 return spring 7-3 is reset, and the moving block 7-1 pulls the driving block 6-1 to move upward, and the driving block 6-1 moves upward away from the squeezing block 6-2. The No. 1 return spring 6-4 rebounds, and the movable ball 5 is pulled away from the pressure discharge head 2. At this time, the interior of the pressure discharge head 2 is in a circulation state, and the medium can be discharged to the outside through the pressure discharge head 2.

[0073] Compared with the prior art, the present invention has the following beneficial effects:

[0074] 1. The left and right side walls of the driving block 6-1 are inclined to match the side walls of the extrusion block 6-2, so that the driving block 6-1 can move downward to squeeze the extrusion block 6-2. When the driving block 6-1 applies force to the extrusion block 6-2, the extrusion block 6-2 can only move outward to squeeze the No. 1 return spring 6-4. When the No. 1 return spring 6-4 is stressed, the connecting rod 6-3 drives the movable ball 5 to block the pressure discharge head 2, which is now in a closed state.

[0075] 2. When the driving block 6-1 moves upward, the force exerted on the extrusion block 6-2 disappears, and the No. 1 return spring 6-4 rebounds, pulling the connecting rod 6-3 to move the rod, so that the movable ball 5 is separated from the pressure discharge head 2. At this time, the pressure discharge head 2 is in communication with the outside, allowing the medium to be discharged;

[0076] 3. The setting of the limiting shell 8 and the limiting rod 9 on one side of the movable ball 5 is to prevent the movable ball 5 from completely entering the pressure discharge head 2 and causing it to be stuck with the pressure discharge head 2, so that the movable ball 5 can be easily released from the pressure discharge head 2 by the rebound of the No. 1 return spring 6-4.

[0077] 4. The movement of the drive block 6-1 is controlled by the cooperation of the eccentric wheel 7-6 and the No. 2 return spring 7-3. When the eccentric wheel 7-6 is pressed against the limit plate 7-2, the drive block 6-1 can only move downward to apply force to the extrusion block 6-2. When the eccentric wheel 7-6 is away from the limit plate 7-2, the No. 2 return spring 7-3 rebounds, pulling the drive block 6-1 upward, causing the extrusion block 6-2 to rebound, thereby driving the movable ball 5 to separate from the pressure discharge head 2.

[0078] For those skilled in the art, they can modify the technical solutions described in the aforementioned embodiments and make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pressure relief safety valve with a pressure relief mechanism, comprising a valve body (1), the lower side of the valve body (1) being an inlet, and the right side of the valve body being an outlet; It is characterized in that Also includes: Pressure discharge heads (2), there are two pressure discharge heads (2), which are respectively symmetrically embedded on the left and right sides and fixed on the upper side of the valve body (1); The support frame (3) is an inverted "L"-shaped structure, and there are two support frames (3), which are symmetrically fixedly arranged inside the upper end of the valve body (1), and the horizontal end of the support frame (3) is arranged on the upper side of the pressure discharge head (2); A fixed platform (4), wherein the fixed platform (4) is fixedly arranged inside the upper end of the valve body (1), and the fixed platform (4) is arranged on the upper side of the support frame (3); There are two movable balls (5), each of which is movably inserted into the interior of the corresponding pressure discharge head (2); A driving assembly (6), wherein the driving assembly (6) is arranged between the left and right support frames (3).

2. A pressure relief safety valve with a pressure relief mechanism according to claim 1, characterized in that: The driving assembly (6) comprises: A driving block (6-1), wherein the driving block (6-1) is arranged between the left and right support frames (3), and the left and right side walls of the driving block (6-1) are arranged to be inclined from outside to inside and from top to bottom; Extrusion blocks (6-2), there are two extrusion blocks (6-2), which are respectively arranged on the left and right sides of the driving block (6-1), and the inner walls of the extrusion blocks (6-2) are arranged to be inclined from the outside to the inside and from the top to the bottom; Connecting rods (6-3), there are two connecting rods (6-3), which are respectively fixed on the outside of the extrusion block (6-2), and the connecting rods (6-3) are inserted into the vertical end of the support frame (3), and the inner ends of the connecting rods (6-3) are connected to the movable ball (5); The No. 1 return spring (6-4) is provided in two pieces, each of which is movably sleeved on a corresponding connecting rod (6-3). The No. 1 return spring (6-4) is provided between the vertical end of the support frame (3) and the extrusion block (6-2). The left and right ends of the No. 1 return spring (6-4) are respectively connected to the vertical end of the corresponding support frame (3) and the extrusion block (6-2).

3. A pressure relief safety valve with a pressure relief mechanism according to claim 2, characterized in that: A pressing assembly (7) is provided on the upper side of the driving block (6-1), and the pressing assembly (7) comprises: A moving block (7-1), wherein the moving block (7-1) is fixedly arranged on the upper side of the driving block (6-1), and the upper side of the moving block (7-1) moves through the fixed platform (4) and is then arranged on the upper side of the fixed platform (4); A limiting plate (7-2), wherein the limiting plate (7-2) is fixedly arranged on the upper side of the moving block (7-1); No. 2 return spring (7-3), there are two No. 2 return springs (7-3), which are respectively arranged on the left and right sides of the moving block (7-1), and the upper and lower ends of the No. 2 return spring (7-3) are respectively connected to the limit plate (7-2) and the fixed platform (4); A motor bracket (7-4), wherein the motor bracket (7-4) is fixedly mounted on the fixed platform (4), and the motor bracket (7-4) is arranged on the front side of the moving block (7-1), and a rotating motor (7-5) is arranged on the motor bracket (7-4); The eccentric wheel (7-6) is sleeved and fixed on the output end of the rotating motor (7-5), and the eccentric wheel (7-6) is contacted with the upper side of the limiting plate (7-2).

4. A pressure relief safety valve with a pressure relief mechanism according to claim 2, characterized in that: A limiting shell (8) is provided on one side of the movable ball (5), and the outer ring wall of the limiting shell (8) is connected to the outer end of the connecting rod (6-3).

5. A pressure relief safety valve with a pressure relief mechanism according to claim 4, characterized in that: Limiting rods (9) are provided on both the upper and lower sides of the limiting shell (8), and the limiting rods (9) are provided in contact with the inner wall of the valve body (1).

6. A pressure relief safety valve with a pressure relief mechanism according to claim 2, characterized in that: The driving block (6-1) is provided with a connecting block (10) on both the front and rear sides, and the left and right sides of the connecting block (10) are respectively connected to the vertical ends of the support frame (3); the connecting block (10) is provided with a movable groove (11) symmetrically on the left and right sides, and the extrusion block (6-2) is provided with a movable platform (12) on both the front and rear sides, and the movable platform (12) is respectively slidably inserted into the corresponding movable groove (11).

7. The pressure relief safety valve with a pressure relief mechanism according to claim 3, characterized in that: A movable groove (13) is provided inside the movable block (7-1), and a guide block (14) is movably provided in the movable groove (13). The guide block (14) is arranged on the lower side of the fixed platform (4), and the front and rear sides of the guide block (14) are respectively connected to the inner ring wall of the valve body (1).

8. The pressure relief safety valve with a pressure relief mechanism according to claim 1, characterized in that: The diameter of the movable ball (5) is set to be greater than or equal to the inner diameter of the pressure discharge head (2).

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