High-strength anti-erosion valve forge piece

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a high-strength anti-erosion valve forge piece which comprises a valve body, a valve rod and a valve cover, the valve cover is connected with the valve body in a fastening mode through a bolt, the valve rod is connected with the valve cover in a threaded mode, a through hole is formed in the center of the valve cover in a penetrating mode, the valve rod can penetrate through the through hole, and padding is installed in the through hole. A thread groove is formed in the surface of the valve rod in a tapping mode, and a sealing assembly is installed on the valve rod. When the filler is abraded and leaks, the gas sensor can receive a pressure signal of leaked gas, the pressure signal is transmitted to the controller, the controller controls the driver to rotate, and the valve rod is controlled to rotate through transmission matching of the first gear and the second gear so as to close the exhaust port, so that gas inflow is cut off, and continuous overflow of the gas is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a high-strength erosion-resistant valve forging. Background Art

[0002] A valve is a pipeline accessory used to open and close pipelines, control flow direction, and adjust and control the parameters of the transported medium. It is a part of the medium (such as gas) transport system and has functions such as cutoff, regulation, diversion, and diversion.

[0003] It is found in actual use that since the valve stem of the straight-stroke regulating valve moves up and down during the opening process, the wear of the packing will cause leakage at the packing. The flammable, explosive or colorless and odorless highly toxic gas medium will cause harm to the on-site environment and people and pose a hidden danger to life safety.

[0004] The existing Chinese patent with announcement number CN220540439U discloses a leak-proof self-locking valve forging, including a valve body, a valve stem and a valve cover, and the center of the valve cover is penetrated by a through hole for the valve stem to pass through. The device installs a detachable self-locking component on the valve cover above the packing. When the packing is worn and leaks, the air pressure sensor will receive the pressure signal of the leaked gas, and then the air pressure sensor will transmit the signal to the PLC end, and the micro air pump will be controlled by the PLC end. At this time, the micro air pump works to pump air into the locking air cushion. At this time, the locking air cushion is gradually expanded by the gas and is close to the surface of the valve stem, so that a leak-proof sealing operation can be achieved, which can ensure the safety of the overall use; at the same time, the traditional O-ring is replaced by a Gley sealing ring, and the anti-wear part of the Gley sealing ring plays an anti-wear role, which is not easy to wear during use, ensuring the overall sealing stability of the structure and effectively extending the service life of the structure as a whole.

[0005] In view of the above-mentioned and existing related technologies, the inventors believe that the following defects often exist: the device achieves leak-proof sealing operation by means of a locking air cushion that is inflated by gas, and when the pressure of the gas transported inside the valve body is too high, the pressure will push the locking air cushion to deform, which will relatively affect its sealing effect and needs to be improved; therefore, a high-strength, erosion-resistant valve forging is proposed to address the above-mentioned problems. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve the above-mentioned technical problems, the utility model proposes a high-strength erosion-resistant valve forging.

[0007] The technical solution adopted by the utility model to solve its technical problems is: a high-strength erosion-resistant valve forging described in the utility model comprises a valve body, a valve stem and a valve cover, the valve cover is fastened and connected with the valve body by bolts, the valve stem is threadedly connected with the valve cover, a through hole is penetrated through the center of the valve cover to meet the passage of the valve stem, a packing is installed inside the through hole, a thread groove is tapped on the surface of the valve stem, a sealing assembly is installed on the valve stem, the sealing assembly comprises an annular gear 1, a gear 2 and a driver, the side wall of the gear 1 is rotatably connected with the valve cover, and the inner hole of the gear 1 is threadedly connected with the valve stem, the gear 1 is meshedly connected with the gear 2, the driver is fixedly installed on the outer wall of the valve cover, and the driving end of the driver is fixedly connected with the gear 2, when the packing is worn and leaks, the gas sensor will receive the pressure signal of the leaked gas, the pressure signal is transmitted to the controller, the controller controls the driver to rotate, and through the transmission cooperation of the gear 1 and the gear 2, the valve stem is controlled to rotate to close the discharge port, thereby cutting off the gas inflow to avoid continuous gas overflow, and the controller controls the alarm to generate an alarm to remind the staff that the valve needs maintenance operation.

[0008] Preferably, a discharge inlet is provided on the left side of the valve body, a discharge outlet is provided on the lower side of the valve body, a medium flow channel is connected between the discharge inlet and the discharge outlet, and connecting flanges are provided on the discharge inlet and the discharge outlet.

[0009] Preferably, the bottom end of the valve stem is fixedly connected to a valve core, and the valve body is located on a contact surface of the valve core and is concavely provided with an annular groove, in which an annular sealing gasket is placed, and the valve stem rotates to move the valve core to the annular groove, thereby blocking the medium flow channel and closing the valve body.

[0010] Preferably, a detection port is provided on the surface of the valve cover, and the detection port is communicated with the through hole, a gas sensor is fixedly connected to the inside of the detection port, and the gas sensor is electrically connected to the driver.

[0011] Preferably, an anti-seepage component is installed inside the through hole, and the anti-seepage component includes a limit ring, which is fixedly mounted on the inner wall of the through hole, and the valve stem passes through the limit ring. In order to prevent the gas from flowing back from the exhaust port to the inside of the valve body and overflowing from the wear of the packing, when the driver controls the valve body to close, the valve stem drives the seal to be inserted into the inside of the sealing groove, so that the through hole is synchronously sealed through the cooperation of the limit ring and the seal, effectively preventing gas from overflowing, thereby realizing a leak-proof sealing operation. Compared with the prior art, it is not affected by the gas pressure and the sealing effect is more stable.

[0012] Preferably, a sealing groove is provided on the surface of the limiting ring.

[0013] Preferably, a sealing ring is fixedly connected to the interior of the sealing groove, and the sealing member is pressed against the sealing ring to improve the sealing effect.

[0014] Preferably, the anti-seepage component further comprises a sealing member, which is fixedly mounted on the surface of the valve stem, and a cross-section of the sealing member is set to be U-shaped.

[0015] Preferably, the valve body includes a base layer, a reinforcement layer and an anti-corrosion layer, a reinforcement layer is arranged on the base layer, and the anti-corrosion layer is coated on the reinforcement layer. The material of the base layer is alloy steel, the material of the reinforcement layer is zirconia ceramic, and the material of the anti-corrosion layer is fluorosilicone resin. By providing the reinforcement layer and the material of the reinforcement layer is zirconia ceramic, the strength of the valve body can be made higher, and by providing the anti-corrosion layer and the material of the anti-corrosion layer is fluorosilicone resin, the anti-corrosion effect of the outside of the valve body can be increased, so that the valve body is not easily oxidized, rusted and decayed by the humid air in the external environment.

[0016] The utility model is beneficial in that:

[0017] 1. In the utility model, when the packing is worn and leaks, the gas sensor will receive the pressure signal of the leaked gas, and the pressure signal is transmitted to the controller. The controller controls the driver to rotate, and through the transmission cooperation of gear 1 and gear 2, the valve stem is controlled to rotate to close the discharge port, thereby cutting off the gas inflow to prevent continuous gas overflow.

[0018] 2. The utility model drives the seal to be inserted into the interior of the sealing groove through the valve stem, so that the through hole is synchronously sealed through the cooperation of the limit ring and the seal, effectively preventing gas overflow, thereby achieving a leak-proof sealing operation. Compared with the existing technology, it is not affected by the gas pressure and the sealing effect is more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 This is a cross-sectional view of the valve body and valve cover of the utility model;

[0022] Figure 3 This is a schematic diagram of the sealing component structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the connection between the valve stem and the sealing assembly of the utility model;

[0024] Figure 5This is a cross-sectional view of the limit ring and the sealing member of the utility model.

[0025] In the figure: 1. valve body; 2. valve stem; 3. valve cover; 4. packing; 5. valve core; 6. through hole; 7. sealing assembly; 71. gear one; 72. gear two; 73. driver; 9. gas sensor; 10. anti-seepage assembly; 101. limit ring; 102. sealing groove; 103. sealing ring; 104. sealing part. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Embodiment 1

[0028] See also Figure 1-4 As shown, a high-strength erosion-resistant valve forging comprises a valve body 1, a valve stem 2 and a valve cover 3. The valve cover 3 is fastened to the valve body 1 by bolts, the valve stem 2 is threadedly connected to the valve cover 3, a through hole 6 is formed in the center of the valve cover 3 to allow the valve stem 2 to pass through, a packing 4 is installed inside the through hole 6, a thread groove is formed by tapping on the surface of the valve stem 2, a sealing assembly 7 is installed on the valve stem 2, the sealing assembly 7 comprises an annular gear 1 71, a gear 2 72 and a driver 73, the side wall of the gear 1 71 is rotatably connected to the valve cover 3, and the inner hole of the gear 1 71 is threadedly connected to the valve stem 2, the gear 1 72 is threadedly connected to the valve cover 3, and the gear 1 72 is threadedly connected to the valve stem 2. 1 is meshed and connected with gear 2 72, and driver 73 is fixedly installed on the outer wall of valve cover 3, and the driving end of driver 73 is fixedly connected with gear 2 72. When packing 4 is worn and leaks, gas sensor 9 will receive the pressure signal of leaked gas, and the pressure signal is transmitted to controller. Controller controls driver 73 to rotate, and through the transmission cooperation of gear 1 71 and gear 2 72, controls valve stem 2 to rotate and close the discharge port, thereby cutting off the gas inflow to avoid continuous gas overflow, and controller controls alarm to generate alarm to remind staff that valve needs maintenance operation.

[0029] A discharge inlet is provided on the left side of the valve body 1, and a discharge outlet is provided on the lower side of the valve body 1. A medium flow channel is connected between the discharge inlet and the discharge outlet, and connecting flanges are provided on the discharge inlet and the discharge outlet.

[0030] The bottom end of the valve stem 2 is fixedly connected to a valve core 5, and the valve body 1 is located on the contact surface of the valve core 5 and is concavely provided with an annular groove, in which an annular sealing gasket is placed. The valve stem 2 rotates to move the valve core 5 to the annular groove, thereby blocking the medium flow channel and closing the valve body 1.

[0031] A detection port is provided on the surface of the valve cover 3 , and the detection port is communicated with the through hole 6 . A gas sensor 9 is fixedly connected to the inside of the detection port, and the gas sensor 9 is electrically connected to the driver 73 .

[0032] Embodiment 2

[0033] For comparison with Example 1, please refer to Figure 5 As shown, the utility model provides another embodiment, an anti-seepage component 10 is installed inside the through hole 6, and the anti-seepage component 10 includes a limit ring 101, the limit ring 101 is fixedly installed on the inner wall of the through hole 6, and the valve stem 2 passes through the limit ring 101. In order to prevent the gas from flowing back from the exhaust port to the inside of the valve body 1 and overflowing from the wear of the packing 4, when the driver 73 controls the valve body 1 to close, the valve stem 2 drives the seal 104 to be inserted into the inside of the sealing groove 102, so that the through hole 6 is synchronously sealed by the cooperation of the limit ring 101 and the seal 104, effectively preventing the gas from overflowing, thereby realizing a leak-proof sealing operation. Compared with the prior art, it is not affected by the gas pressure and the sealing effect is more stable.

[0034] A sealing groove 102 is formed on the surface of the limiting ring 101 .

[0035] A sealing ring 103 is fixedly connected to the inside of the sealing groove 102, and a sealing member 104 is pressed against the sealing ring 103 to improve the sealing effect.

[0036] The anti-seepage component 10 further includes a sealing member 104 , which is fixedly mounted on the surface of the valve stem 2 , and a cross section of the sealing member 104 is set to be U-shaped.

[0037] The valve body 1 includes a base layer, a reinforcement layer and an anti-corrosion layer. The reinforcement layer is arranged on the base layer, and the anti-corrosion layer is coated on the reinforcement layer. The material of the base layer is alloy steel, the material of the reinforcement layer is zirconia ceramic, and the material of the anti-corrosion layer is fluorosilicone resin. By arranging the reinforcement layer, the material of the reinforcement layer is zirconia ceramic, the strength of the valve body 1 can be made higher, and by arranging the anti-corrosion layer, the material of the anti-corrosion layer is fluorosilicone resin, the anti-corrosion effect of the outer side of the valve body 1 can be increased, so that the valve body 1 is not easily oxidized, rusted and decayed by the humid air in the external environment.

[0038] Through the personnel in this field, all the electrical components in this case are connected to their corresponding power supplies through wires, and according to the actual situation, appropriate controllers should be selected to electrically connect with the driver 73, the gas sensor 9 and the alarm to meet the control requirements. The specific connection and control sequence should refer to the following working principle, and the electrical connection between the electrical components is completed in the working order. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and does not explain the electrical control.

[0039] Working principle: when the packing 4 is worn and leaks, the gas sensor 9 will receive the pressure signal of the leaked gas, and the pressure signal is transmitted to the controller. The controller controls the driver 73 to rotate, and through the transmission cooperation of gear 1 71 and gear 2 72, the valve stem 2 is controlled to rotate to close the discharge port, thereby cutting off the gas inflow to avoid continuous gas overflow, and the controller controls the alarm to generate an alarm to remind the staff that the valve needs maintenance operation.

[0040] When the driver 73 controls the valve body 1 to close, the valve stem 2 drives the seal 104 to be inserted into the interior of the sealing groove 102, so that the through hole 6 is synchronously sealed through the cooperation of the limit ring 101 and the seal 104, effectively preventing gas overflow, thereby achieving a leak-proof sealing operation. Compared with the prior art, it is not affected by the gas pressure and the sealing effect is more stable.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A high-strength erosion-resistant valve forging, comprising a valve body (1), a valve stem (2) and a valve cover (3), characterized in that: The center of the valve cover (3) is penetrated by a through hole (6) for the valve stem (2) to pass through, a packing (4) is installed inside the through hole (6), a thread groove is tapped on the surface of the valve stem (2), a sealing assembly (7) is installed on the valve stem (2), the sealing assembly (7) comprises an annular gear 1 (71), a gear 2 (72) and a driver (73), the side wall of the gear 1 (71) is rotatably connected to the valve cover (3), and the inner hole of the gear 1 (71) is threadedly connected to the valve stem (2), the gear 1 (71) is meshedly connected to the gear 2 (72), the driver (73) is fixedly installed on the outer wall of the valve cover (3), and the driving end of the driver (73) is fixedly connected to the gear 2 (72).

2. The high-strength erosion-resistant valve forging according to claim 1, characterized in that: The left side of the valve body (1) is provided with a discharge inlet, the lower side of the valve body (1) is provided with a discharge outlet, a medium flow channel is connected between the discharge inlet and the discharge outlet, and the discharge inlet and the discharge outlet are both provided with connecting flanges.

3. The high-strength erosion-resistant valve forging according to claim 1, characterized in that: The bottom end of the valve stem (2) is fixedly connected to a valve core (5); the valve body (1) is located on a contact surface of the valve core (5) and is provided with an annular groove, in which an annular sealing gasket is placed.

4. The high-strength erosion-resistant valve forging according to claim 1, characterized in that: A detection port is provided on the surface of the valve cover (3), and the detection port is connected to the through hole (6). A gas sensor (9) is fixedly connected to the inside of the detection port, and the gas sensor (9) is electrically connected to the driver (73).

5. The high-strength erosion-resistant valve forging according to claim 1, characterized in that: An anti-seepage component (10) is installed inside the through hole (6), and the anti-seepage component (10) comprises a limiting ring (101). The limiting ring (101) is fixedly installed on the inner wall of the through hole (6), and the valve stem (2) passes through the limiting ring (101).

6. The high-strength erosion-resistant valve forging according to claim 5, characterized in that: A sealing groove (102) is provided on the surface of the limiting ring (101).

7. The high-strength erosion-resistant valve forging according to claim 6, characterized in that: A sealing ring (103) is fixedly connected inside the sealing groove (102).

8. The high-strength erosion-resistant valve forging according to claim 5, characterized in that: The anti-seepage component (10) further comprises a sealing member (104), wherein the sealing member (104) is fixedly mounted on the surface of the valve stem (2), and the cross section of the sealing member (104) is set to be U-shaped.

9. The high-strength erosion-resistant valve forging according to claim 1, characterized in that: The valve body (1) comprises a base layer, a reinforcement layer and an anti-corrosion layer, wherein the reinforcement layer is arranged on the base layer, and the anti-corrosion layer is coated on the reinforcement layer. The base layer is made of alloy steel, the reinforcement layer is made of zirconia ceramics, and the anti-corrosion layer is made of fluorosilicone resin.

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