Discharging valve

Abstract

The emptying valve comprises a valve body, a first valve element, a second valve element and a plugging cover, and a feeding port, a discharging port and a sewage draining port which communicate with one another are formed in the valve body; the first valve element is arranged close to the feeding port and used for blocking the feeding port. The second valve element is arranged close to the discharging port and used for blocking the discharging port. The valve body is further communicated with a cleaning pipe section, the cleaning pipe section is used for introducing liquid or gas so as to clean an inner cavity of the valve body, the drain outlet is used for discharging the liquid or the gas, and the blocking cover is used for blocking the drain outlet. According to the technical scheme, the convenience of cleaning of the emptying valve is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of valve bodies, and in particular to a discharge valve. Background Art

[0002] The discharge valve is mainly used for emission control at the bottom of equipment such as containers, reactors or hoppers. Its main function is to control the discharge or emptying of materials inside the equipment. Discharge valves are widely used in chemical, pharmaceutical, food processing and other industries that require precise control of material discharge. Among them, the upward discharge valve, as a common discharge valve structure, has attracted attention for its high control accuracy and high safety. However, the existing discharge valves have the problem of poor convenience in cleaning and maintenance during actual use, which leads to a large workload of cleaning and maintenance during the equipment life cycle, thereby affecting production efficiency and equipment operation stability. Therefore, how to take into account the convenience of cleaning and maintenance in the design of the discharge valve, and effectively reduce the maintenance workload by optimizing the structural design, has become a technical problem that needs to be solved urgently by technical personnel in this field. Summary of the invention

[0003] The object of the present invention is to provide a discharge valve, aiming to improve the convenience of cleaning the discharge valve.

[0004] To achieve this object, the present invention adopts the following technical solutions: A discharge valve comprises a valve body, a first valve core, a second valve core and a blocking cover. The valve body is formed with a feed port, a discharge port and a sewage outlet which are interconnected; the first valve core is arranged near the feed port to block the feed port; the second valve core is arranged near the discharge port to block the discharge port; The valve body is also connected to a cleaning pipe section, which is used to pass liquid or gas to clean the inner cavity of the valve body. The drain port is used to discharge the liquid or gas, and the blocking cover is used to block the drain port.

[0005] In one embodiment, the opening directions of the feed port and the sewage discharge port are opposite, and the sewage discharge port is arranged close to the discharge port.

[0006] In one embodiment, the extension direction of the cleaning pipe section is toward the first valve core.

[0007] In one embodiment, the first valve core is connected to a first valve stem assembly and a first driving member, the first valve stem assembly penetrates the valve body, and the first valve core is located outside the valve body; when the feed port is closed, the first driving member drives the first valve stem assembly to move in a direction away from the feed port, so that the first valve core is separated from the valve body; The second valve core is connected to a second valve stem assembly and a second driving member. The second valve stem assembly passes through the valve body, and the second valve core is located inside the valve body. When the discharge port is closed, the second driving member drives the second valve stem assembly to move away from the discharge port to open the discharge port.

[0008] In one embodiment, the first driving member is a helical gear and the second driving member is an electric actuator, and the electric actuator can drive the helical gear to rotate; The first valve stem assembly includes a first screw rod, a first threaded barrel and a first stopper. The first screw rod is threadably matched with the first threaded barrel, the first screw rod is connected to the first valve core, and the first threaded barrel passes through the valve body and is rotationally matched with the valve body; The first stopper is fixedly connected to the valve body, and a first guide rod is also arranged in parallel with the first screw rod. The first guide rod passes through the first stopper and is slidably matched with the first stopper. When the bevel gear drives the first threaded cylinder to rotate, the first guide rod can move relative to the first limiting member; The second valve stem assembly includes a second screw rod, a second threaded barrel and a second stopper. The second screw rod is threadably matched with the second threaded barrel, the second screw rod is connected to the second valve core, and the second threaded barrel passes through the valve body and is rotationally matched with the valve body; The second stopper is fixedly connected to the valve body, and the second screw rod is also provided with a second guide rod in parallel, and the second guide rod passes through the second stopper and is slidably matched with the second stopper; When the electric actuator drives the second threaded cylinder to rotate, the second guide rod can move relative to the second limiting member.

[0009] In one embodiment, the first threaded barrel passes through the first stopper and rotates with the first stopper; The second threaded barrel passes through the second limiting member and is rotationally matched with the second limiting member.

[0010] In one embodiment, a first electromagnetic clutch is further provided between the bevel gear and the first threaded barrel; A second electromagnetic clutch is also provided between the electric actuator and the second threaded cylinder; When the electric actuator is working, the first electromagnetic clutch can control the first threaded barrel to rotate or stop; the second electromagnetic clutch can control the second threaded barrel to rotate or stop.

[0011] In one embodiment, a carrier plate is further provided inside the sewage outlet close to the valve body, and the carrier plate is rotatably matched with the valve body.

[0012] In one embodiment, the carrier plate has an axis radially arranged along the sewage outlet, a fan-shaped protrusion is arranged at the axial end of the carrier plate, a fan-shaped groove is formed on the outer wall of the valve body, the fan-shaped protrusion is accommodated in the fan-shaped groove and can rotate relative to the fan-shaped groove, so that the carrier plate is limited in the horizontal direction and the vertical direction of the sewage outlet respectively.

[0013] In one embodiment, the shaft of the carrier plate is further sleeved with a positioning member, and when the fan-shaped protrusion is received in the fan-shaped groove, the positioning member can also be received in the remaining space of the fan-shaped groove.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The technical solution of the present invention realizes the convenience of cleaning the discharge valve by providing a first valve core, a second valve core, a blocking cover, a cleaning pipe section, and configuring a drain port on the valve body. Specifically, when the inner cavity of the discharge valve needs to be cleaned and maintained, the first valve core can be used to block the feed port, and the second valve core can be used to block the discharge port to avoid disassembling the discharge valve from each reactor. Furthermore, when both the feed port and the discharge port are blocked, a cleaning liquid or gas is introduced into the cleaning pipe section to flush or purge the inner cavity of the valve body, and the drain port can discharge the cleaned dirt, thereby realizing convenient cleaning of the discharge valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention 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 two embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0016] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0017] Figure 1 It is a structural schematic diagram of an embodiment of a discharge valve of the present invention; Figure 2 It is a structural schematic diagram of an embodiment of a discharge valve structure of the present invention; Figure 3 This is an intended use state of an embodiment of a discharge valve of the present invention; Figure 4 It is a structural schematic diagram of an embodiment of a discharge valve structure of the present invention; Figure 5 It is a structural schematic diagram of an embodiment of a partial structure of a material dispensing valve of the present invention; Illustration: 100, discharge valve; 110, valve body; 110a, feed port; 110b, discharge port; 110c, sewage outlet; 111, cleaning pipe section; 112, fan-shaped groove 120, first valve core; 130, second valve core; 140, blocking cover; 150, first valve stem assembly; 151, first screw rod; 152, first threaded barrel; 153, first stopper; 154, first guide rod; 155, first electromagnetic clutch; 160, first driving member; 170, second valve stem assembly; 171, second screw rod; 172, second threaded barrel; 173, second stopper; 174, second guide rod; 175, first electromagnetic clutch; 180, second driving member; 190. Loading plate; 191. Fan-shaped protrusion; 192. Positioning member. DETAILED DESCRIPTION

[0018] In order to make the technical purpose, features and advantages of the present invention more obvious and easy to understand, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0020] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0021] Embodiment 1: The embodiment of the present invention provides a discharge valve 100 .

[0022] See also Figures 1 to 5 , the discharge valve 100 includes a valve body 110, a first valve core 120 and a second valve core 130; The valve body 110 is formed with a feed port 110a, a discharge port 110b and a sewage outlet 110c which are interconnected; the first valve core 120 is arranged near the feed port 110a to block the feed port 110a; the second valve core 130 is arranged near the discharge port 110b to block the discharge port 110b; The valve body 110 is also connected to a cleaning pipe section 111, and the cleaning pipe section 111 is used to pass liquid or gas to clean the inner cavity of the valve body 110, and the sewage outlet 110c is used to discharge the liquid or gas.

[0023] It can be understood that the technical solution of the present invention realizes the convenience of cleaning the discharge valve 100 by providing the first valve core 120, the second valve core 130, the blocking cover 140, the cleaning pipe section 111, and configuring the sewage outlet 110c on the valve body 110. Specifically, when the inner cavity of the discharge valve 100 needs to be cleaned and maintained, the first valve core 120 can block the feed port 110a, and the second valve core 130 can block the discharge port 110b to avoid disassembling the discharge valve 100 from each reactor. Further, when the feed port 110a and the discharge port 110b are both blocked, a cleaning liquid or gas is introduced into the cleaning pipe section 111 to flush or purge the inner cavity of the valve body 110, and the sewage outlet 110c can discharge the cleaned dirt, thereby realizing the convenient cleaning of the discharge valve 100.

[0024] It should also be noted that the blocking cover 140 is used to block the sewage outlet 110 c to ensure the normal use of the discharge valve 100 .

[0025] In a specific embodiment, Figure 1 As shown, the opening directions of the feed port 110a and the sewage outlet 110c are opposite, and the sewage outlet 110c is arranged close to the discharge port 110b.

[0026] It can be understood that the opening directions of the feed port 110a and the drain port 110c are opposite, which helps to avoid dirt residue or backflow, and the drain port 110c is arranged close to the discharge port 110b to quickly clear the dirt in the valve body 110, thereby improving the cleaning effect of the discharge valve 100 and reducing the complexity of operation.

[0027] Usually, the feed port 110a relies on gravity feeding, so the opening direction of the feed port 110a is upward. When the opening directions of the feed port 110a and the sewage outlet 110c are opposite, the opening direction of the sewage outlet 110c is downward, which is conducive to the discharge of dirt and improves the cleaning efficiency.

[0028] Furthermore, if Figure 1 As shown, the extension direction of the cleaning pipe section 111 is toward the first valve core 120 .

[0029] It is understandable that the first valve core 120 is used to block the feed inlet 110a, so the first valve core 120 is a part that is easily contaminated. Therefore, the arrangement of the cleaning pipe section 111 toward the first valve core 120 can enable the cleaning liquid or gas to first act on key areas where dirt may accumulate, such as the feed inlet 110a and the valve core, thereby improving the cleaning effect.

[0030] See also Figures 1 to 4 In a preferred embodiment of the present invention, the first valve core 120 is connected to a first valve stem assembly 150 and a first driving member 160, the first valve stem assembly 150 penetrates the valve body 110, and the first valve core 120 is located outside the valve body 110; when the feed port 110a is closed, the first driving member 160 drives the first valve stem assembly 150 to move away from the feed port 110a, so that the first valve core 120 is separated from the valve body 110, thereby opening the feed port 110a.

[0031] It is understandable that the first driving member 160 can be a hand wheel, a pneumatic actuator, a hydraulic actuator, an electric actuator, etc. The first valve core 120 is located outside the valve body 110, which is conducive to cleaning and maintenance of the valve core and prolonging the service life of the discharge valve 100.

[0032] The second valve core 130 is connected to a second valve stem assembly 170 and a second driving member 180. The second valve stem assembly 170 passes through the valve body 110, and the second valve core 130 is located inside the valve body 110. When the discharge port 110b is closed, the second driving member 180 drives the second valve stem assembly 170 to move away from the discharge port 110b to open the discharge port 110b.

[0033] It is understandable that the second driving member 180 can be a hand wheel, a pneumatic actuator, a hydraulic actuator, an electric actuator, etc. The second valve core 130 is located inside the valve body 110. When the second valve core 130 closes the discharge port 110b, the second valve core 130 helps to discharge the material in the inner cavity of the valve body 110, thereby avoiding excessive contamination of the valve body 110 and reducing material waste.

[0034] It should also be noted that the first driving member 160 and the second driving member 180 are both fixed relative to the valve body 110 .

[0035] See also Figure 4 In a specific embodiment, the first driving member 160 is a helical gear and the second driving member 180 is an electric actuator, and the electric actuator can drive the helical gear to rotate; The first valve stem assembly 150 includes a first screw rod 151, a first threaded barrel 152 and a first stopper 153. The first screw rod 151 is threadedly matched with the first threaded barrel, the first screw rod 151 is connected to the first valve core 120, and the first threaded barrel 152 passes through the valve body 110 and is rotationally matched with the valve body 110; The first stopper 153 is fixedly connected to the valve body 110. The first screw rod 151 is also provided with a first guide rod 154 in parallel. The first guide rod 154 passes through the first stopper 153 and is slidably matched with the first stopper 153. When the bevel gear drives the first threaded cylinder 152 to rotate, the first guide rod 154 can move relative to the first limiting member 153; The second valve stem assembly 170 includes a second screw rod 171, a second threaded barrel 172 and a second stopper 173. The second screw rod 171 is threadedly matched with the second threaded barrel, the second screw rod 171 is connected to the second valve core 130, and the second threaded barrel 172 passes through the valve body 110 and is rotationally matched with the valve body 110; The second stopper 173 is fixedly connected to the valve body 110 , and a second guide rod 174 is also arranged in parallel with the second screw rod 171 . The second guide rod 174 passes through the second stopper 173 and is slidably matched with the second stopper 173 . When the electric actuator drives the second threaded cylinder 172 to rotate, the second guide rod 174 can move relative to the second limiting member 173 .

[0036] It is understandable that the above design realizes synchronous driving of the first valve core 120 and the second valve core 130 by configuring the electric actuator and the bevel gear, thereby improving the switching efficiency of the discharge valve 100.

[0037] Specifically, the first threaded barrel 152 and the second threaded barrel 172 rotate so that the first screw rod 151 and the second screw rod 171 can be extended and retracted relative to the first threaded barrel 152 or the second threaded barrel 172 under the guidance of the first limit member 153 and the second limit member 173, thereby realizing the simultaneous opening or closing of the feed port 110a and the discharge port 110b.

[0038] Furthermore, the first threaded barrel 152 passes through the first stopper 153 and rotates with the first stopper 153; The second threaded barrel 172 passes through the second limiting member 173 and is rotatably matched with the second limiting member 173 .

[0039] It can be understood that the provision of the first limiting member 153 and the second limiting member 173 achieves further fixation of the first threaded barrel 152 and the second threaded barrel 172 , thereby improving the reliability of the discharge valve 100 .

[0040] Please continue reading Figure 4 In a preferred embodiment, a first electromagnetic clutch 155 is further provided between the bevel gear and the first threaded cylinder 152; A second electromagnetic clutch 175 is also provided between the electric actuator and the second threaded cylinder 172; When the electric actuator is working, the first electromagnetic clutch 155 can control the first threaded barrel 152 to rotate or stop; the second electromagnetic clutch 175 can control the second threaded barrel 172 to rotate or stop.

[0041] In specific control, when the first valve core 120 needs to be operated, the first electromagnetic clutch 155 is controlled to connect to the first threaded barrel 152 , and the power of the electric actuator is transmitted to the first threaded barrel 152 via the bevel gear, pushing the first screw to move, thereby driving the first valve core 120 to move.

[0042] Similarly, when the second valve core 130 needs to be operated, the second electromagnetic clutch 175 is activated to connect it to the second threaded barrel 172, and the power of the electric actuator is transmitted to the second threaded barrel 172 to push the second screw to move, thereby driving the second valve core 130 to move.

[0043] Therefore, the arrangement of the first electromagnetic clutch 155 and the second electromagnetic clutch 175 can realize independent control of the first threaded barrel 152 and the second threaded barrel 172, that is, independent control of the opening and closing of the feed port 110a and the discharge port 110b is realized. And this independent control enables the discharge valve 100 to be applicable to various types of working requirements, thereby improving the applicability of the discharge valve 100.

[0044] On the other hand, this arrangement can also allow the feed port 110a and the discharge port 110b to be used interchangeably or the sewage outlet 110c to be used as the discharge port 110b when necessary, thereby further improving the applicability of the discharge valve 100.

[0045] See also Figure 1 and Figure 5 In another specific embodiment of the present invention, a carrier plate 190 is further provided inside the sewage outlet 110 c close to the valve body 110 , and the carrier plate 190 is rotatably matched with the valve body 110 .

[0046] It is understandable that when the discharge valve 100 is working, the setting of the carrier plate 190 can prevent materials from accumulating and blocking the sewage outlet 110c, and the carrier plate 190 can rotate relative to the valve body 110, so as to achieve the conduction between the sewage outlet 110c and the inner cavity of the valve body 110. In addition, during the cleaning process, the carrier plate 190 can also guide the flow of cleaning liquid or gas, so as to enhance the cleaning effect on the inner wall of the valve body 110 and the vicinity of the discharge port 110b.

[0047] Specifically, please refer to Figure 5 The carrier plate 190 has an axis radially arranged along the sewage outlet 110c, and a fan-shaped protrusion 191 is arranged at the axial end of the carrier plate 190. The outer wall of the valve body 110 is formed with a fan-shaped groove 112. The fan-shaped protrusion 191 is accommodated in the fan-shaped groove 112 and can rotate relative to the fan-shaped groove 112, so that the carrier plate 190 is limited in the horizontal direction and the vertical direction of the sewage outlet 110c respectively.

[0048] It can be understood that the arrangement of the fan-shaped groove 112 and the fan-shaped protrusion 191 realizes the horizontal and vertical positioning of the carrier plate 190 at the sewage outlet 110c. Specifically, the carrier plate 190 is rotated within a range of 90° relative to the valve body 110, and the arrangement of the fan-shaped protrusion 191 facilitates the user to observe the relative position of the carrier plate 190 from the outside, thereby improving the reliability of the setting position of the carrier plate 190.

[0049] It can also be understood that when the carrier plate 190 is horizontally arranged relative to the sewage outlet 110 c , the carrier plate 190 can be fixed relative to the valve body 110 .

[0050] Optionally, the carrier plate 190 and the valve body 110 are locked by a nut.

[0051] In one embodiment, the shaft of the carrier plate 190 is also sleeved with a positioning member 192 , and when the fan-shaped protrusion 191 is manually accommodated in the fan-shaped groove 112 , the positioning member 192 is accommodated in the remaining space of the fan-shaped groove 112 , thereby achieving the fixation of the carrier plate 190 relative to the valve body 110 .

[0052] When the object carrier plate 190 is rotated, the positioning member 192 is manually disengaged from the fan-shaped groove 112 , thereby enabling the fan-shaped protrusion 191 to rotate in the fan-shaped groove 112 .

[0053] It should also be noted that the positioning member 192 can rotate and slide relative to the axis of the carrier plate 190 .

[0054] Embodiment 2: The present invention further provides a working method of the discharge valve 100, which is applied to the discharge valve 100 in the above-mentioned embodiment 1, and specifically includes: The discharge valve 100 is installed at the bottom of the reactor for discharging materials from the reactor; the feed port 110a is connected to another reactor for collecting and secondary processing materials; A first flow sensor is provided at the feed port 110a, and a second flow sensor is provided between the discharge port 110c and the other reactor; respectively setting thresholds of the first flow sensor and the second flow sensor; When the discharge volume of the feed port 110a is normal and the discharge volume of the discharge port 110c is lower than the set threshold, the discharge port 110c is blocked, and the flow sensor sends out an alarm to remind the user to close the feed port 110a and open the sewage discharge port 110c so that the residual material can be discharged from the sewage discharge port 110c; After the residual material in the inner cavity of the valve body is discharged, the second valve core blocks the discharge port 110c; After the sewage outlet 110c is connected to the collector, the feed port 110a is opened to use the sewage outlet 110c as a new sewage outlet 110c. As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some of the technical features therein by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A discharge valve, characterized in that: It includes a valve body, a first valve core, a second valve core and a blocking cover. The valve body is formed with a feed port, a discharge port and a sewage outlet which are interconnected; the first valve core is arranged near the feed port to block the feed port; the second valve core is arranged near the discharge port to block the discharge port; The valve body is also connected to a cleaning pipe section, which is used to pass liquid or gas to clean the inner cavity of the valve body. The drain port is used to discharge the liquid or gas, and the blocking cover is used to block the drain port.

2. The discharge valve according to claim 1, characterized in that: The opening directions of the feed port and the sewage discharge port are opposite, and the sewage discharge port is arranged close to the discharge port.

3. The discharge valve according to claim 2, characterized in that: The extension direction of the cleaning pipe section is toward the first valve core.

4. The discharge valve according to claim 3, characterized in that: The first valve core is connected to a first valve stem assembly and a first driving member, the first valve stem assembly penetrates the valve body, and the first valve core is located outside the valve body; when the feed inlet is closed, the first driving member drives the first valve stem assembly to move in a direction away from the feed inlet, so that the first valve core is separated from the valve body; The second valve core is connected to a second valve stem assembly and a second driving member. The second valve stem assembly passes through the valve body, and the second valve core is located inside the valve body. When the discharge port is closed, the second driving member drives the second valve stem assembly to move away from the discharge port to open the discharge port.

5. The discharge valve according to claim 4, characterized in that: The first driving member is a helical gear and the second driving member is an electric actuator, and the electric actuator can drive the helical gear to rotate; The first valve stem assembly includes a first screw rod, a first threaded barrel and a first stopper. The first screw rod is threadably matched with the first threaded barrel, the first screw rod is connected to the first valve core, and the first threaded barrel passes through the valve body and is rotationally matched with the valve body; The first stopper is fixedly connected to the valve body, and a first guide rod is also arranged in parallel with the first screw rod. The first guide rod passes through the first stopper and is slidably matched with the first stopper. When the bevel gear drives the first threaded cylinder to rotate, the first guide rod can move relative to the first limiting member; The second valve stem assembly includes a second screw rod, a second threaded barrel and a second stopper. The second screw rod is threadably matched with the second threaded barrel, the second screw rod is connected to the second valve core, and the second threaded barrel passes through the valve body and is rotationally matched with the valve body; The second stopper is fixedly connected to the valve body, and the second screw rod is also provided with a second guide rod in parallel, and the second guide rod passes through the second stopper and is slidably matched with the second stopper; When the electric actuator drives the second threaded cylinder to rotate, the second guide rod can move relative to the second limiting member.

6. The discharge valve according to claim 5, characterized in that: The first threaded barrel passes through the first limiting member and is rotatably matched with the first limiting member; The second threaded barrel passes through the second limiting member and is rotationally matched with the second limiting member.

7. The discharge valve according to claim 5, characterized in that: A first electromagnetic clutch is also provided between the helical gear and the first threaded barrel; A second electromagnetic clutch is also provided between the electric actuator and the second threaded cylinder; When the electric actuator is working, the first electromagnetic clutch can control the first threaded barrel to rotate or stop; the second electromagnetic clutch can control the second threaded barrel to rotate or stop.

8. The discharge valve according to claim 7, characterized in that: A loading plate is also arranged inside the sewage outlet close to the valve body, and the loading plate is rotatably matched with the valve body.

9. The discharge valve according to claim 8, characterized in that: The carrier plate has an axis arranged along the radial direction of the sewage outlet, a fan-shaped protrusion is arranged at the axial end of the carrier plate, a fan-shaped groove is formed on the outer wall of the valve body, the fan-shaped protrusion is accommodated in the fan-shaped groove and can rotate relative to the fan-shaped groove, so that the carrier plate is limited in the horizontal direction and the vertical direction of the sewage outlet respectively.

10. The discharge valve according to claim 9, characterized in that: The shaft of the object carrier plate is also sleeved with a positioning piece, and when the fan-shaped protrusion is received in the fan-shaped groove, the positioning piece can also be received in the remaining space of the fan-shaped groove.

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