Continuous blowdown device

Abstract

The continuous blowdown device comprises a main valve body, a first valve seat, a second valve seat and a valve plate, and a fluid channel and a valve seat containing cavity communicating with the fluid channel are formed in the main valve body; the first valve seat comprises a first plate and a first fixing part arranged on the side portion of the first plate, the second valve seat comprises a second plate and a second fixing part arranged on the side portion of the second plate, the first fixing part and the second fixing part are both arranged in the fluid channel and located on the two sides of the valve seat containing cavity, and the first plate and the second plate are arranged in the valve seat containing cavity. A first through hole is formed in the first fixing part, and a second through hole is formed in the second fixing part; the valve plate is arranged between the first plate and the second plate in a sliding mode, the two side faces of the valve plate are attached to the first plate and the second plate respectively, and a third through hole is formed in the valve plate. Impurities in sewage can be prevented from flowing into the main valve body.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage discharge control, and in particular relates to a continuous sewage discharge device. Background Art

[0002] The horizontal continuous sewage controller is a device for discharging sewage under high-pressure discharge conditions for gases and liquids. Since sewage contains a large amount of impurities such as sand, soil, and iron filings, when using a horizontal continuous sewage controller to discharge sewage, when the ordinary sewage controller moves up and down on the valve plate to open and close, or when the valve plate is in a half-open state, the impurities in the sewage will enter the main valve body, causing the impurities to accumulate in the main valve body. Long-term use of the accumulated impurities will cause the valve plate to be unable to be effectively closed, making the sewage controller unusable. Therefore, there is an urgent need for a sewage controller that can ensure that impurities in sewage are prevented from entering the main valve body. Summary of the invention

[0003] The purpose of the present invention is to provide a continuous sewage discharge device to solve the problem that impurities in sewage can easily enter the main valve body during the use of the existing sewage discharge controller.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a continuous sewage discharge device, including a main valve body, a first valve seat, a second valve seat and a valve plate, the main valve body is provided with a fluid channel and a valve seat accommodating chamber connected to the fluid channel; the first valve seat includes a first plate and a first fixing portion arranged on the side of the first plate, the second valve seat includes a second plate and a second fixing portion arranged on the side of the second plate, the first fixing portion and the second fixing portion are both arranged in the fluid channel and located on both sides of the valve seat accommodating chamber, the first plate and the second plate are arranged in the valve seat accommodating chamber, the first fixing portion is provided with a first through hole, and the second fixing portion is provided with a second through hole; the valve plate is slidably arranged between the first plate and the second plate, and the two side surfaces of the valve plate are respectively in contact with the first plate and the second plate, and a third through hole is provided on the valve plate.

[0005] As a preferred technical solution of the present invention, the outer ring connecting the first fixed part and the main valve body is provided with a first sealing ring, and the outer ring connecting the second fixed part and the main valve body is provided with a second sealing ring, and the first sealing ring and the second sealing ring abut against the inner wall of the fluid channel.

[0006] As a preferred technical solution of the present invention, a fourth through hole is provided on the valve plate, and the fourth through hole is communicated with the third through hole.

[0007] As a preferred technical solution of the present invention, it also includes an electric actuator, a valve stem and a valve stem seal; the valve stem seal is assembled between the main valve body and the electric actuator, the valve stem is slidably arranged in the valve stem seal, and one end of the valve stem is connected to the electric actuator, and the other end is fixedly connected to the valve plate; the valve stem seal includes a valve cover, a guide sleeve, a shaft sleeve and a nut, the valve cover is fixedly arranged on the main valve body, the seal and the shaft sleeve are placed in the valve cover, the nut is fixed to the end of the valve cover away from the main valve body, and the valve stem is slidably connected to the sealing ring and the shaft sleeve.

[0008] As a preferred technical solution of the present invention, a flushing sleeve is provided on the inner wall of the fluid channel near the outlet end.

[0009] As a preferred technical solution of the present invention, a pressure ring is also provided in the fluid channel, which is fixed at the outlet end. The flushing sleeve is provided on the inner wall of the main valve body, one end of which abuts against the second valve seat and the other end abuts against the pressure ring.

[0010] As a preferred technical solution of the present invention, it also includes an elastic member, and an installation groove is provided at one end of the first fixing portion away from the valve plate. The elastic member is arranged in the installation groove and abuts against the main valve body.

[0011] As a preferred technical solution of the present invention, it also includes a base, which is fixedly arranged at the bottom end of the valve seat accommodating cavity. When the valve plate moves downward, the valve plate abuts against the base.

[0012] As a preferred technical solution of the present invention, a plugging piece is also included, and a sewage outlet is also arranged on the main valve body, and the plugging piece can plug the sewage outlet.

[0013] As a preferred technical solution of the present invention, a pressure relief hole is also provided on the main valve body.

[0014] The beneficial effects of the present invention are as follows: the present invention proposes a continuous sewage discharge device, wherein when the valve plate is moved upward and is located in an open position, the first through hole, the second through hole and the third through hole are connected, and the fluid medium can be discharged through the main valve body; since the valve plate is always in contact with the first plate and the second plate when opened or closed, the fluid medium can only flow out to the outlet end through the third through hole, effectively preventing impurities in the fluid medium from flowing into the valve seat accommodating cavity and causing the impurities to precipitate in the main valve body; the valve plate of the continuous sewage discharge device is in a contact state with the first valve seat and the second valve seat throughout the entire stroke, which can effectively prevent impurities in the fluid medium from entering the main valve body, thereby increasing the service life of the discharge controller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a continuous sewage discharge device of the present invention;

[0016] Figure 2It is a structural schematic diagram of a first valve seat, a valve plate and a second valve seat in a continuous sewage discharge device of the present invention.

[0017] In the figure: 1. main valve body; 11. pressure relief hole; 2. first valve seat; 21. first fixing part; 211. first through hole; 212. mounting groove; 213. first sealing ring; 22. first plate; 3. second valve seat; 31. second fixing part; 311. second through hole; 312. second sealing ring; 32. second plate; 4. valve plate; 41. third through hole; 42. fourth through hole; 5. flushing sleeve; 6. pressure ring; 7. elastic member; 8. base; 9. blocking member; 91. third sealing ring; 10. electric actuator; 20. valve stem; 30. valve stem sealing member; 301. valve cover; 302. guide sleeve; 303. shaft sleeve; 304. nut. DETAILED DESCRIPTION

[0018] The present invention is further described in detail below in conjunction with the accompanying drawings, tables and specific embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0019] The present invention is further described below by way of examples, but is not limited to the following embodiments.

[0020] Example 1

[0021] like Figure 1 and Figure 2As shown, a continuous sewage discharge device of the present invention comprises a main valve body 1, a first valve seat 2, a second valve seat 3 and a valve plate 4. A fluid channel is provided in the main valve body 1, and a fluid medium (i.e. sewage) can flow out from the inlet end to the outlet end of the fluid channel, and a valve seat accommodating chamber connected to the fluid channel is also provided in the main valve body 1; the first valve seat 2 comprises a first fixing portion 21 and a first plate 22, and the second valve seat 3 comprises a second fixing portion 31 and a second plate 32, the first fixing portion 21 and the second fixing portion 31 are both provided in the fluid channel and are located on both sides of the valve seat accommodating chamber, the first plate 22 and the second plate 32 are located in the valve seat accommodating chamber, and the first fixing portion 21 is provided with a first through hole 211, and the second fixing portion 31 is provided with a second through hole 311; The valve plate 4 is slidably disposed between the first plate 22 and the second plate 32, and the two side surfaces of the valve plate 4 are respectively fitted with the first plate 22 and the second plate 32. The valve plate 4 is provided with a third through hole 41, so that when the valve plate 4 is moved upward to the open position, the first through hole 211, the second through hole 311 and the third through hole 41 are connected, and the fluid medium can be discharged through the main valve body 1. Since the valve plate 4 is always fitted with the first plate 22 and the second plate 32 when it is opened or closed, the sewage can only flow out to the outlet end through the third through hole 41, effectively preventing impurities in the sewage from flowing into the valve seat accommodating cavity and causing the impurities to be deposited in the main valve body 1. When the valve plate 4 is moved downward to the closed position, the third through hole 41 is not connected with the first through hole 211 and the second through hole 311, and the sewage stops being discharged.

[0022] The valve plate 4 of the continuous sewage discharge device is in a fitted state with the first valve seat 2 and the second valve seat 3 throughout the entire stroke, which can effectively prevent impurities in sewage from entering the main valve body 1 and increase the service life of the continuous sewage discharge device.

[0023] Example 2

[0024] Different from Example 1, in order to prevent sewage from leaking into the main valve body 1 through the outer rings of the first fixing part 21 and the second fixing part 31, the outer ring connecting the first fixing part 21 and the main valve body 1 is provided with a first sealing ring 213, and the outer ring connecting the second fixing part 31 and the main valve body 1 is provided with a second sealing ring 312. The first sealing ring 213 and the second sealing ring 312 can abut against the inner wall of the fluid channel to effectively prevent sewage leakage.

[0025] The continuous sewage discharge device of the present invention can control the on-off by moving the valve plate 4 upward or downward, and adjust the flow rate of sewage by adjusting the moving distance of the valve plate 4 (i.e., adjusting the overlap degree of the second through hole 311 and the third through hole 41). When the continuous sewage discharge device controls the valve plate 4 to move upward or downward, in order to make the valve plate 4 move more smoothly, the valve plate 4 is also provided with a fourth through hole 42, which is connected to the third through hole 41, so that when the valve plate 4 moves between the first valve seat 2 and the second valve seat 3, after the first plate 22 and the second plate 32 completely close the third through hole 41, the third through hole 41 can be connected to the outside through the fourth through hole 42.

[0026] Example 3

[0027] Different from the first embodiment, in order to facilitate the adjustment of the moving distance of the valve plate 4, the continuous sewage discharge device further includes an electric actuator 10, which can control the upward or downward movement of the valve plate 4 to open or close the flow channel.

[0028] The continuous sewage discharge device also includes a valve stem 20 and a valve stem seal 30. The valve stem seal 30 is connected between the main valve body 1 and the electric actuator 10. The valve stem 20 is slidably arranged in the valve stem seal 30. One end of the valve stem 20 is connected to the electric actuator 10, and the other end is fixedly connected to the valve plate 4. The electric actuator 10 drives the valve plate 4 to move up and down by controlling the valve stem 20. In this embodiment, the valve stem seal 30 includes a valve cover 301, a guide sleeve 302, a shaft sleeve 303 and a nut 304. The valve cover 301 is fixedly arranged on the main valve body 1, the seal and the shaft sleeve 303 are placed in the valve cover 301, the nut 304 is fixed to the end of the valve cover 301 away from the main valve body 1, and the valve stem 20 is slidably connected to the seal ring and the shaft sleeve 303.

[0029] Example 4

[0030] Different from the first embodiment, in order to adjust the flow more accurately, the second through hole 311 and the third through hole 41 are both configured as long strip holes, and the extension direction of the long axis of the long strip hole is the same as the movement direction of the valve plate 4, so that the flow can be adjusted more accurately when the valve plate 4 moves. In this embodiment, the long strip hole is an elliptical hole, and the elliptical hole is easy to manufacture.

[0031] Example 5

[0032] What is different from Example 1 is that a flushing sleeve 5 is provided on the inner wall of the fluid channel near the outlet end. When sewage flows in from the inlet end, passes through the valve and flows out from the outlet end, the sewage cannot directly flush the main valve body 1, but flows out through the flushing sleeve 5. The flushing sleeve 5 effectively solves the problem of sewage directly flushing the main valve body 1 and improves its service life.

[0033] The flushing sleeve 5 is made of ceramic, which has the advantages of high hardness, high wear resistance and oxidation resistance. Moreover, the first valve seat 2, the second valve seat 3 and the valve plate 4 are all made of ceramic material, which effectively improves the service life of the continuous sewage discharge device.

[0034] Example 6

[0035] Different from Example 1, a pressure ring 6 is also provided in the fluid channel, and the pressure ring 6 is fixedly arranged at the outlet end. The flushing sleeve 5 is arranged on the inner wall of the main valve body 1, one end of which abuts against the second valve seat 3, and the other end abuts against the pressure ring 6. The pressure ring 6 can fix the flushing sleeve 5 in the main valve body 1 without falling out.

[0036] Example 7

[0037] Different from Example 1, the continuous sewage discharge device of the present invention also includes an elastic member 7. An installation groove 212 is provided at the end of the first fixed portion 21 facing away from the valve plate 4. The elastic member 7 is arranged in the installation groove 212 and abuts against the main valve body 1. The action force of the elastic member 7 can make the first valve seat 2 always be squeezed toward the valve plate 4, so that the first valve seat 2 and the second valve seat 3 fit more closely with the two side surfaces of the valve plate 4 to improve the sealing effect.

[0038] In this embodiment, the elastic member 7 is a circular wave coil, which can effectively save axial installation space and can output a larger spring stiffness. Therefore, the circular wave coil can provide a higher elastic force within a very small stroke range, and the overall structure is more compact.

[0039] Example 8

[0040] Different from Example 1, the continuous sewage discharge device of the present invention also includes a base 8, which is fixedly arranged at the bottom end of the valve seat accommodating cavity. When the valve plate 4 moves downward, the valve plate 4 abuts against the base 8 to prevent the valve plate 4 from directly hitting the main valve body 1.

[0041] Example 9

[0042] Different from Example 1, the continuous sewage discharge device of the present invention further includes a plugging member 9, and a sewage outlet is also provided on the main valve body 1, and the plugging member 9 can block the sewage outlet. When the sewage discharge controller is in use, the silt and other impurities in the sewage enter the valve seat accommodating chamber in the main valve body 1 through the third through hole 41 and then the fourth through hole 42. At this time, the plugging member 9 can be opened to connect the valve seat accommodating chamber with the outside through the sewage outlet, and the silt and other impurities in the sewage can be discharged through the sewage outlet. In order to make the plugging member 9 and the sewage outlet seal more tightly and prevent leakage, a third sealing ring 91 is provided on the side where the plugging member 9 is connected to the sewage outlet, and the third sealing ring 91 abuts against the inner wall of the sewage outlet to effectively prevent sewage leakage.

[0043] In this embodiment, the blocking member 9 is preferably a screw.

[0044] Example 10

[0045] Different from the first embodiment, since the continuous sewage discharge device is used in a high-pressure environment, a certain pressure will be generated in the valve seat accommodating chamber. In order to prevent the plugging member 9 from being ejected by high pressure at the moment of disengagement from the main valve body 1, a pressure relief hole 11 is also provided on the main valve body 1. When the plugging member 9 is removed, the plugging member 9 is rotated to slowly withdraw the plugging member 9. After the plugging member 9 withdraws a certain distance, the pressure relief hole 11 is connected with the sewage outlet, so that the pressure in the valve seat accommodating chamber is discharged from the pressure relief hole 11, effectively preventing the high pressure from ejecting the plugging member 9 and thus avoiding injury. After the impurities are removed, the plugging member 9 is screwed in, and the plugging member 9 can block the pressure relief hole 11 to prevent sewage from leaking from the pressure relief hole 11.

Claims

1. A continuous sewage discharge device, characterized in that: It includes a main valve body, a first valve seat, a second valve seat and a valve plate, wherein a fluid channel and a valve seat accommodating chamber connected to the fluid channel are arranged in the main valve body; the first valve seat includes a first plate and a first fixing portion arranged on the side of the first plate, the second valve seat includes a second plate and a second fixing portion arranged on the side of the second plate, the first fixing portion and the second fixing portion are both arranged in the fluid channel and located on both sides of the valve seat accommodating chamber, the first plate and the second plate are arranged in the valve seat accommodating chamber, a first through hole is arranged on the first fixing portion, and a second through hole is arranged on the second fixing portion; the valve plate is slidably arranged between the first plate and the second plate, and the two side surfaces of the valve plate are respectively fitted with the first plate and the second plate, and a third through hole is arranged on the valve plate.

2. The continuous sewage discharge device according to claim 1, characterized in that: The outer ring of the first fixing part connected to the main valve body is provided with a first sealing ring, and the outer ring of the second fixing part connected to the main valve body is provided with a second sealing ring. The first sealing ring and the second sealing ring abut against the inner wall of the fluid channel.

3. The continuous sewage discharge device according to claim 2, characterized in that: A fourth through hole is arranged on the valve plate, and the fourth through hole is communicated with the third through hole.

4. The continuous sewage discharge device according to claim 3, characterized in that: It also includes an electric actuator, a valve stem and a valve stem seal; the valve stem seal is assembled between the main valve body and the electric actuator, the valve stem is slidably arranged in the valve stem seal, and one end of the valve stem is connected to the electric actuator, and the other end is fixedly connected to the valve plate; the valve stem seal includes a valve cover, a guide sleeve, a shaft sleeve and a nut, the valve cover is fixedly arranged on the main valve body, the seal and the shaft sleeve are placed in the valve cover, the nut is fixed to the end of the valve cover away from the main valve body, and the valve stem is slidably connected to the sealing ring and the shaft sleeve.

5. The continuous sewage discharge device according to claim 4, characterized in that: A flushing sleeve is arranged on the inner wall of the fluid channel near the outlet end.

6. The continuous sewage discharge device according to claim 5, characterized in that: A pressure ring is also provided in the fluid channel and is fixedly arranged at the outlet end. The flushing sleeve is arranged on the inner wall of the main valve body and abuts against the second valve seat at one end and the pressure ring at the other end.

7. The continuous sewage discharge device according to claim 6, characterized in that: It also includes an elastic member. An end of the first fixing portion facing away from the valve plate is provided with a mounting groove. The elastic member is arranged in the mounting groove and abuts against the main valve body.

8. The continuous sewage discharge device according to claim 7, characterized in that: It also includes a base, which is fixedly arranged at the bottom end of the valve seat accommodating cavity. When the valve plate moves downward, the valve plate abuts against the base.

9. The continuous sewage discharge device according to claim 8, characterized in that: It also includes a plugging piece, and a sewage outlet is also arranged on the main valve body, and the plugging piece can plug the sewage outlet.

10. The continuous sewage discharge device according to claim 9, characterized in that: A pressure relief hole is also provided on the main valve body.

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