Double-valve-group integrated discharge valve

Abstract

The utility model discloses a double-valve-group integrated discharge valve, and relates to the technical field of valves. The valve comprises a valve body, fluid channels which are communicated with each other are arranged in the valve body, the fluid channels comprise an inlet channel located at one end of the valve body, two cut-off channels located in the middle of the valve body, a discharge channel located at the other end of the valve body, and cut-off valve assemblies arranged at the two cut-off channels respectively. Each cut-off valve assembly comprises a cut-off valve rod and a cut-off valve element, and one end of each cut-off valve rod penetrates through the valve body, extends to the outside and is connected with a driving mechanism. The valve body is arranged, the valve body adopts an integrated valve body design, connecting points among components are reduced, the possibility of leakage is reduced fundamentally, meanwhile, the discharge valve seat adopts a special sealing material, and a conical surface matching structure of the discharge valve core and the discharge valve seat is adopted, so that the sealing performance of the valve is further enhanced, fluid leakage is effectively prevented, and the service life of the valve is prolonged. And the safety and the reliability of valve operation are improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field, concretely relates to a double valve group integrated discharge valve. BACKGROUND

[0002] In many industrial fields such as chemical industry, petroleum, water treatment, the discharge operation of fluid medium is very common, at present, the common discharge valve structure on the market is composed of multiple independent valves or multiple pieces.

[0003] The Chinese patent with the publication number CN210830602U discloses a double valve group integrated emergency discharge valve, which comprises a main box body, a left shaft, a right shaft, a partition plate assembly, an upper gas outlet, a lower gas outlet, a left cylinder, a right cylinder, a left cylinder support and a right cylinder support, the partition plate assembly is welded on the main box body, the left cylinder is fixed on the left cylinder support, and the right cylinder is fixed on the right cylinder support, one side of the box body is provided with an air inlet, and the other side is provided with an upper gas outlet and a lower gas outlet, through the unique structure design, the exhaust gas can be rapidly and reliably blocked into RTO in emergency, the ultra-high concentration exhaust gas is directly discharged into the atmosphere, the explosion, furnace body over-temperature damage and other safety accidents caused by the exhaust gas into RTO are effectively avoided, and the safety of the production process is ensured, but the emergency discharge valve is composed of the main box body, multiple partition plates, cylinder supports and other components welded or fixed, there are many connection points, with the increase of the use time and the influence of factors such as fluid pressure and temperature, the leakage risk of the connection points will increase continuously, which threatens the safety of the environment and personnel.

[0004] Therefore, the utility model is provided. UTILITY MODEL CONTENT

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art, and provide a double valve group integrated discharge valve, which solves the problems in the background art.

[0006] To solve the above technical problems, the basic idea of the technical scheme of the utility model is:

[0007] A dual-valve integrated discharge valve includes: a valve body with interconnected fluid channels inside, the fluid channels including an inlet channel at one end of the valve body, two cut-off channels in the middle of the valve body, and a discharge channel at the other end of the valve body; cut-off valve assemblies respectively disposed at the two cut-off channels, each cut-off valve assembly including a cut-off valve stem and a cut-off valve core, one end of the cut-off valve stem penetrating the valve body and extending to the outside, connected to a drive mechanism, and the other end fixedly connected to the valve core; and a discharge valve assembly disposed at the discharge channel, the discharge valve assembly including a discharge valve stem, a discharge valve core, and a discharge valve seat, one end of the discharge valve stem extending out of the valve body and connected to an operating handle, and the other end fixedly connected to the discharge valve core, the discharge valve core cooperating with the discharge valve seat.

[0008] Optionally, the shut-off valve stems of the two shut-off valve assemblies are connected to the same drive motor through a linkage mechanism, and the drive motor can rotate in both directions.

[0009] Optionally, the overall shape of the valve body is "I" shaped.

[0010] Optionally, the mating surfaces of the discharge valve core and the discharge valve seat are conical mating structures.

[0011] Optionally, the discharge channel has a groove above the discharge valve seat mounting location, the groove corresponding to the discharge valve core, and the top of the discharge valve core contacting the inner wall of the groove.

[0012] Optionally, the shut-off valve core is spherical and has a channel in the middle, and the shut-off valve core is rotatably connected to the shut-off channel.

[0013] Optionally, the inner walls of the inlet channel, the cut-off channel, and the discharge channel are all smoothed.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0015] By incorporating a one-piece valve body design, the number of connection points between components is reduced, fundamentally lowering the possibility of leakage. Simultaneously, the use of special sealing materials in the discharge valve seat, along with the conical mating structure between the discharge valve core and the discharge valve seat, further enhances the valve's sealing performance, effectively preventing fluid leakage and improving the safety and reliability of valve operation. Furthermore, the "I"-shaped valve body design makes the valve structure compact, significantly reducing the overall volume compared to traditional multi-component valves, saving installation space, and making it more suitable for installation and use in space-constrained industrial environments.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0017] The drawings in the following description are only some embodiments, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings. In the drawings:

[0018] Figure 1 is a schematic diagram of the overall structure;

[0019] Figure 2 is a schematic diagram of the cross-sectional structure at the cut-off channel;

[0020] Figure 3 is a schematic diagram of the cross-sectional structure at the discharge channel;

[0021] Figure 4 is a schematic diagram of the cross-sectional structure of the discharge valve seat.

[0022] In the drawings, the components represented by each reference numeral are listed as follows:

[0023] 1, valve body; 2, inlet channel; 3, discharge channel; 4, cut-off valve assembly; 5, cut-off valve stem; 6, cut-off valve core; 7, discharge valve seat; 8, cut-off channel; 9, discharge valve core; 10, discharge valve stem; 11, groove.

[0024] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the utility model in any way, but to illustrate the concept of the utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0025] The utility model will be further described in detail in combination with the drawings.

[0026] Please refer to Figures 1-4 shown, in this embodiment, a double valve group integrated discharge valve is provided, which comprises: a valve body 1, the valve body 1 is internally provided with fluid channels communicating with each other, the fluid channels include an inlet channel 2 at one end of the valve body 1, two cut-off channels 8 in the middle of the valve body 1 and a discharge channel 3 at the other end of the valve body 1, cut-off valve assemblies 4 are respectively arranged at the two cut-off channels 8, each cut-off valve assembly 4 comprises a cut-off valve stem 5 and a cut-off valve core 6, one end of the cut-off valve stem 5 penetrates through the valve body 1 and extends to the outside and is connected with a driving mechanism, the other end is fixedly connected with the valve core, a discharge valve assembly is arranged at the discharge channel 3, the discharge valve assembly comprises a discharge valve stem 10, a discharge valve core 9 and a discharge valve seat 7, one end of the discharge valve stem 10 extends out of the valve body 1 and is connected with an operating handle, the other end is fixed with the discharge valve core 9, and the discharge valve core 9 cooperates with the discharge valve seat 7.

[0027] The valve body 1 is internally provided with fluid passages in communication with each other, including an inlet passage 2 for introducing fluid to be discharged, two cutoff passages 8 for cutoff control of the fluid, and a discharge passage 3 for discharging the fluid. Each cutoff passage 8 is equipped with a cutoff valve assembly 4, and the opening or closing of the passage is determined by the operation of the cutoff valve assembly 4, thereby controlling whether the fluid can flow from the inlet passage 2 to the discharge passage 3. The provision of two cutoff passages 8 can provide redundancy protection in some cases, or be used for connecting different systems or performing different stages of cutoff control, thereby enhancing the flexibility and reliability of valve control. When the driving mechanism applies power, the cutoff valve stem 5 rotates, thereby driving the cutoff valve core 6 to act, and the cutoff passage 8 is opened or closed. The operator rotates the discharge valve stem 10 by operating the handle, and the rotation of the discharge valve stem 10 drives the discharge valve core 9 to move in the discharge valve seat 7, thereby controlling the opening of the discharge passage 3, and adjusting the discharge flow of the fluid. The discharge valve core 9 is driven by the discharge valve stem 10 to change the relative position with the discharge valve seat 7, thereby realizing the opening, closing and opening adjustment of the discharge passage 3. The discharge valve core 9 is tightly matched with the discharge valve seat 7 to prevent fluid leakage in the closed state, and in the open state, the fluid is allowed to pass through the discharge passage 3 at a certain flow rate according to the position of the discharge valve core 9.

[0028] In the present embodiment, the cutoff valve stems 5 of the two cutoff valve assemblies 4 are connected to the same driving motor through a linkage mechanism, and the driving motor can be forward or reverse rotated. The two cutoff valve stems 5 are controlled by a single driving motor, avoiding the time difference and inconsistency that may be caused by separate operations, and ensuring that the two cutoff passages 8 can act simultaneously during the opening or closing process, and accurately control the cutoff and conduction of the fluid. The inner walls of the inlet passage, the cutoff passage and the discharge passage are all smoothed. When the fluid flows in the pipeline, the roughness of the inner wall of the pipeline directly affects the friction between the fluid and the wall. A rough inner wall can cause more turbulence and vortex in the fluid during flow, increasing energy loss. Smoothing the inner walls of the inlet passage, the cutoff passage and the discharge passage can significantly reduce such friction.

[0029] The discharge valve seat 7 uses a special sealing material, which is either modified rubber or graphite composite material. Modified rubber typically has good flexibility and elasticity, which can tightly fit the discharge valve core 9, fill any possible tiny gaps, and effectively prevent fluid leakage. At the same time, it can also be specifically modified according to different working environments and fluid characteristics. Graphite has excellent high temperature resistance, wear resistance, and good self-lubricating properties. Graphite composite material combines these advantages of graphite and may also have certain mechanical strength and chemical stability. In high-temperature environments, it will not lose elasticity or age due to excessive temperature like ordinary rubber, and can still maintain good sealing performance. The overall shape of the valve body 1 is "I". This shape makes the internal channel arrangement of the valve body 1 more regular, reducing the resistance and turbulence when the fluid flows in the valve body 1. At the same time, the compact structure also helps to reduce the overall size and weight of the valve, making it easier to install, transport, and maintain.

[0030] The mating surfaces of the discharge valve core 9 and the discharge valve seat 7 are conical. Compared to a planar fit, the conical fit can create a higher sealing pressure with a smaller contact area. When the discharge valve core 9 contacts the discharge valve seat 7, the conical shape makes the contact line between the valve core and the valve seat more concentrated, resulting in a better sealing effect under fluid pressure. Even after prolonged use, and due to wear causing some changes in the mating surfaces, the conical structure can still maintain good sealing performance through its geometric characteristics. In addition, the conical fit allows for smoother valve core movement during opening and closing, which is beneficial for precise control of the discharge flow. The discharge channel 3 is installed on the discharge valve seat 7. A groove 11 is provided above the device, which corresponds to the discharge valve core 9. The top of the discharge valve core 9 contacts the inner wall of the groove 11. The groove 11 provides precise guidance and positioning for the discharge valve core 9. During the process of the discharge valve stem 10 driving the discharge valve core 9 to move up and down, the top of the discharge valve core 9 moves along the inner wall of the groove 11, ensuring that the valve core always stays in the correct position and accurately cooperates with the discharge valve seat 7. This helps to prevent the discharge valve core 9 from shifting or shaking during the movement, further improving the sealing performance and the accuracy of flow control. At the same time, the groove 11 can also limit the range of movement of the discharge valve core 9 to a certain extent, avoiding damage to the components due to excessive opening or closing.

[0031] The truncated valve core 6 is spherical in shape and has a passage in the middle, and the truncated valve core 6 is rotationally connected with the truncated passage 8, the spherical truncated valve core 6 has good rotation flexibility, and can be easily rotated by 360 degrees in the truncated passage 8, the shape makes the contact area between the valve core and the inner wall of the truncated passage 8 relatively small, the friction is small during rotation, the wear degree is reduced, and the service life of the valve core is improved, at the same time, the shape of the ball can keep good symmetry at any angle, which is beneficial to uniformly bear the fluid pressure and ensure the stability of the truncation effect, the passage in the truncated valve core 6 provides a smooth flow path for the fluid when the valve core is in the open state, the design of the passage can be optimized according to the actual flow demand, to ensure that the fluid can pass through while minimizing the pressure loss of the fluid at the valve core.

[0032] Working principle:

[0033] When the fluid needs to be discharged, the drive motor is started, the drive motor drives the truncated valve rods 5 of the two truncated valve assemblies 4 to rotate synchronously through the linkage mechanism, so that the truncated valve core 6 rotates to the open position, at this time, the truncated passage 8 is opened, the fluid flows from the inlet passage 2 and passes through the truncated passage 8; the operator rotates the discharge valve rod 10 through the operation handle, so that the discharge valve core 9 moves away from the discharge valve seat 7, adjusts the discharge flow according to the actual discharge demand, and the fluid is discharged from the discharge passage 3; when the discharge is finished, the drive motor is started in reverse, the truncated valve rod 5 is rotated, the truncated valve core 6 is rotated to the closed position, the truncated passage 8 is closed, and at the same time, the operator closes the discharge valve through the operation handle, and the fluid discharge is stopped.

[0034] The utility model is not limited to the above-mentioned embodiment, any person should know that the structural changes made under the inspiration of the utility model, any technical scheme with the same or similar technical scheme as the utility model falls within the protection scope of the utility model. The utility model does not describe the technology, shape and structure part in detail, which is the known technology.

Claims

1. A dual valve group integrated drain valve, comprising: The valve body (1) is characterized in that a fluid passage is arranged inside the valve body (1) and communicates with each other, the fluid passage comprises an inlet passage (2) at one end of the valve body (1), two cutoff passages (8) in the middle of the valve body (1) and a discharge passage (3) at the other end of the valve body (1); A cutoff valve assembly (4) is arranged at each of the two cutoff passages (8), each of the cutoff valve assemblies (4) comprises a cutoff valve rod (5) and a cutoff valve core (6), one end of the cutoff valve rod (5) penetrates through the valve body (1) and extends to the outside to be connected with a driving motor outside the valve body, and the other end is fixedly connected with the valve core; A discharge valve assembly is arranged at the discharge passage (3), the discharge valve assembly comprises a discharge valve rod (10), a discharge valve core (9) and a discharge valve seat (7), one end of the discharge valve rod (10) extends out of the valve body (1) to be connected with an operating handle, and the other end is fixedly connected with the discharge valve core (9), and the discharge valve core (9) cooperates with the discharge valve seat (7).

2. The integrated dual valve exhaust valve of claim 1, wherein: The cutoff valve rods (5) of the two cutoff valve assemblies (4) are connected with the same driving motor outside the valve body through a linkage mechanism outside the valve body, and the driving motor can be reversely rotated.

3. The integrated dual valve exhaust valve of claim 1, wherein: The inner walls of the inlet passage (2), the cutoff passage (8) and the discharge passage (3) are all smoothly treated.

4. The integrated dual valve exhaust valve of claim 1, wherein: The overall shape of the valve body (1) is "H" shape.

5. The integrated dual valve exhaust valve of claim 1, wherein: The cooperation surface of the discharge valve core (9) and the discharge valve seat (7) is a conical surface cooperation structure.

6. The integrated dual valve exhaust valve of claim 5, wherein: A groove (11) is formed above the discharge valve seat (7) installation position of the discharge passage (3), the groove (11) corresponds to the discharge valve core (9), and the top end of the discharge valve core (9) is in contact with the inner wall of the groove (11).

7. The integrated dual valve exhaust valve of claim 1, wherein: The cutoff valve core (6) is spherical and a passage is formed in the middle of the cutoff valve core (6), and the cutoff valve core (6) is rotationally connected with the cutoff passage (8).

Images