Blow-down valve for acid metering box

Abstract

The invention discloses a blow-down valve for an acid metering box, and relates to the technical field of valves. Comprising a valve body unit, a shell, a cavity, a water inlet cavity and a water inlet. The plugging unit comprises a plugging assembly, an ejector rod and a closing assembly. The plugging unit has the beneficial effects that the plugging unit is provided with the plugging assembly, the ejector rod, the closing assembly and other structures, and the sealing function and the pollution discharge function of the valve body unit are controlled. When pollution discharge is needed, the tank body is rotated to drive the opening and closing assembly and the closing assembly to rotate, so that the ejector rod rotates and drives the barrel cone to move upwards to block the water inlet cavity, and sealing of the valve body unit and the tank body is achieved. And the opening and closing assembly also facilitates the discharge of the acid mud in the tank body. The design can effectively solve the problem that the valve body is easy to block after being used for a long time in an acid liquid environment, the fluid control efficiency and safety of a system are improved, and a powerful guarantee is provided for efficient operation of a water treatment system.

Description

Technical Field

[0001] The present invention relates to the technical field of valves, and in particular to a blowdown valve for an acid metering tank. Background Art

[0002] The acid metering tank is mainly used for storing and metering the acid solution for regeneration in the ion exchange water treatment system. In the industrial environment, the acid metering tank is an indispensable equipment in the regeneration process of the cation bed. By accurately metering the dosage of the acid solution, the acid metering tank ensures the effective regeneration of the ion exchange resin, thus maintaining the efficient operation of the water treatment system.

[0003] As a key component in the fluid control system, the valve has a profound technical background and wide applications. Since the Industrial Revolution, the design and manufacturing technology of valves have been continuously evolving to meet the complex requirements of various industrial fields. From the initial simple globe valves and check valves to the current high-performance control valves and safety valves, the types and functions of valves have become increasingly diverse. They are widely used in many industries such as petroleum, chemical industry, electric power, and water treatment for precisely regulating, cutting off, or guiding the flow of fluids.

[0004] Although significant progress has been made in valve technology, when the valve body is used in the water treatment system and connected to the acid metering tank, the interior of the valve body is in an environment where acidic liquid flows for a long time. Over time, precipitates are likely to appear in the pipeline, and these precipitates gradually accumulate to form acid sludge, which further blocks the flow channel of the valve. This not only seriously affects the normal opening and closing functions of the valve, reduces the fluid control efficiency of the system, but also may cause more potential safety hazards. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that when the valve is used in an acidic liquid environment for a long time, it will cause the blockage of precipitates in the pipeline, thus affecting the normal opening and closing of the valve and reducing the fluid control efficiency.

[0006] The above technical problem is solved by the following technical solutions: The present invention provides a blowdown valve for an acid metering tank, which includes a valve body unit, comprising a housing, a chamber opened inside the housing, a water inlet chamber provided at the top of the chamber, an inner pipe provided below the water inlet chamber, and a water inlet provided above the chamber;

[0007] A plugging unit, comprising a plugging assembly provided below the inner pipe, a top rod provided inside the plugging assembly, and a closing assembly provided at the bottom of the top rod;

[0008] The plugging assembly includes a cylinder cone provided between the water inlet chamber and the top rod, a round hole opened at the axis of the cylinder cone, a spring provided in the round hole, a convex block embedded in the cylinder cone, and a sealing groove provided on the cylinder cone;

[0009] The sewage discharge unit includes a tank body arranged below the shell, a support rod arranged in the inner cavity of the tank body, an opening and closing assembly arranged on the top of the support rod, and a connecting block arranged on the outer wall of the tank body.

[0010] In a preferred embodiment of the sewage valve for the acid metering tank of the present invention: the shell includes a tooth groove arranged at the bottom of the shell, a water outlet arranged on the outer wall of the shell, a debris removal pipe arranged at the bottom of the shell, an L-shaped fixing block arranged below the shell, and a valve cap arranged above the shell.

[0011] In a preferred embodiment of the drain valve for an acid metering tank of the present invention, the chamber is specifically tapered, and is wide at the top and narrow at the bottom;

[0012] The water inlet is tangent to the wide end of the chamber.

[0013] In a preferred embodiment of the drain valve for the acid metering tank of the present invention: an annular groove is provided on the outer wall of the push rod;

[0014] The protrusion is matched with the annular groove.

[0015] In a preferred embodiment of the drain valve for the acid metering tank described in the present invention: the closing assembly includes a first fixing member arranged at the bottom of the top rod, a first rotating member arranged below the first fixing member, a second fixing member arranged below the first rotating member, a toggle rod arranged on the outer wall of the second fixing member, and an elastic member arranged on the inner side of the toggle rod.

[0016] In a preferred embodiment of the drain valve for the acid metering tank of the present invention: the elastic member cooperates with the tooth groove;

[0017] A circular groove is formed in the center of each of the first fixing member and the second fixing member;

[0018] A polygonal groove is formed at the center of the first rotating member.

[0019] In a preferred embodiment of the drain valve for the acid metering tank of the present invention: the opening and closing assembly includes a third fixing member arranged at the top of the tank body, a second rotating member arranged above the third fixing member, and a fourth fixing member arranged above the second rotating member.

[0020] In a preferred embodiment of the drain valve for the acid metering tank of the present invention: the second fixing member and the fourth fixing member are both provided with an arc groove and a circular groove;

[0021] The first rotating member and the second rotating member are both provided with a cylinder;

[0022] The arc-shaped grooves are respectively matched with the cylinders.

[0023] In a preferred embodiment of the sewage discharge valve for the acid metering tank according to the present invention: The metering unit includes a metering tank and a pipeline disposed below the metering tank.

[0024] The beneficial effects of the present invention are as follows: The blocking unit realizes the sealing of the valve body unit and the control of the sewage discharge function by setting structures such as a blocking component, a push rod, and a closing component. When sewage discharge is required, the rotating tank drives the opening and closing component and the closing component to rotate, so that the push rod rotates to drive the cylinder cone to move upward to block the water inlet cavity, realizing the sealing of the valve body unit and the tank. The opening and closing component also facilitates the discharge of acid sludge in the tank. It can effectively solve the problem that the valve body is prone to blockage during long-term use in an acidic liquid environment, improve the fluid control efficiency and safety of the system, and provide a strong guarantee for the efficient operation of the water treatment system. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention and do not limit the present invention.

[0026] Figure 1 Shows a sectional perspective view of the valve body;

[0027] Figure 2 Shows an enlarged perspective view of A;

[0028] Figure 3 Shows a partial exploded view of the blocking component;

[0029] Figure 4 Shows an exploded view of the closing component and the opening and closing component;

[0030] Figure 5 Shows a perspective view of the metering unit and the valve body unit.

[0031] In the figure: 1. Valve body unit; 11. Housing; 12. Chamber; 13. Water inlet chamber; 14. Inner pipe; 15. Water inlet; 111. Tooth groove; 112. Water outlet; 113. Impurity removal pipe; 114. L-shaped fixing block; 115. Valve cap; 2. Sealing unit; 21. Sealing component; 22. Thumb rod; 23. Closing component; 211. Barrel cone; 212. Round hole; 213. Spring; 214. Protrusion; 215. Sealing groove; 221. Annular groove; 231. First fixing piece; 232. First rotating piece; 233. Second fixing piece; 234. Poking rod; 235. Elastic piece; 3. Sewage disposal unit; 31. Tank body; 32. Support rod; 33. Opening and closing component; 34. Connecting block; 331. Third fixing piece; 332. Second rotating piece; 333. Fourth fixing piece; 4. Metering unit; 41. Metering tank; 42. Pipeline; 51. Polygonal groove; 52. Circular groove; 53. Arc groove; 54. Round groove; 55. Cylinder. Detailed implementation mode

[0032] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation mode of the present invention with reference to the attached drawings of the specification.

[0033] In the following description, many specific details are set forth to fully understand the present invention. However, the present invention can also be implemented in other ways different from the description herein. Those skilled in the art can make similar extensions without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0034] Secondly, the so-called "one embodiment" or "embodiment" herein refers to a specific feature, structure or characteristic that can be included in at least one implementation mode of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is separate or selectively exclusive of other embodiments.

[0035] Embodiment 1

[0036] Referring to Figure 1 , this embodiment provides a sewage valve for an acid metering tank, including a valve body unit 1, which includes a housing 11, a chamber 12 opened inside the housing 11, a water inlet chamber 13 provided at the top of the chamber 12, an inner pipe 14 provided below the water inlet chamber 13, and a water inlet 15 provided above the chamber 12;

[0037] A sealing unit 2, which includes a sealing component 21 provided below the inner pipe 14, a thumb rod 22 provided inside the sealing component 21, and a closing component 23 provided at the bottom of the thumb rod 22;

[0038] The plugging assembly 21 includes a barrel cone 211 disposed between the water inlet cavity 13 and the ejector rod 22. A round hole 212 is formed axially in the barrel cone 211. A spring 213 is provided in the round hole 212. A convex block 214 is embedded in the barrel cone 211, and a sealing groove 215 is provided on the barrel cone 211.

[0039] The sewage discharge unit 3 includes a tank body 31 disposed below the housing 11, a support rod 32 disposed in the inner cavity of the tank body 31, an opening and closing assembly 33 disposed at the top of the support rod 32, and a connecting block 34 disposed on the outer wall of the tank body 31.

[0040] In this embodiment, a cavity 12 is formed inside the housing 11. A cylindrical water inlet cavity 13 is provided at the top end of the cavity 12. The water inlet 15 is cylindrical. The cavity 12 is tangent to one end of the water inlet 15. The cavity 12 is specifically wider at the top and narrower at the bottom and is in the shape of a tapered hole. When the acidic liquid enters the cavity 12 from the water inlet 15, it can rotate through the special internal structure of the cavity 12, thereby generating a centrifugal force to separate the solid from the acidic liquid. An inner tube 14 is provided at the top end of the cavity 12, and the inner tube 14 communicates with the water inlet cavity 13. A section of impurity removal tube 113 extends from the bottom of the cavity 12 and communicates with the sewage discharge unit 3, facilitating the separated solids to fall into the sewage discharge unit 3 for centralized treatment. The separated liquid enters the water inlet cavity 13 from the inner tube 14.

[0041] The plugging unit 2 is disposed below the water inlet cavity 13. The ejector rod 22 is generally cylindrical, and one end of it is disposed inside the plugging assembly 21. The other end of the ejector rod 22 cooperates with the closing assembly 23. The closing assembly 23 is a circle formed by stacking a plurality of annular discs. When the closing assembly 23 closes, it drives the ejector rod 22 to rotate, causing the plugging assembly 21 to move upward, cooperate with the water inlet cavity 13 to block one end of the water inlet cavity 13, and achieve the airtight effect inside the valve body.

[0042] The plugging assembly 21 is located between the water inlet cavity 13 and the ejector rod 22. Among them, the barrel cone 211 is located in the central area of this position, and its two ends are respectively connected to the water inlet cavity 13 and the ejector rod 22. A round hole 212 is formed in the inner cavity of the barrel cone 211, and the round hole 212 extends along the central axis direction of the barrel cone 211. Inside the round hole 212, a spring 213 is installed. One end of the spring 213 contacts the bottom of the round hole 212, and the other end abuts against the ejector rod 22. On the inner wall of the round hole 212, a convex block 214 is provided, which cooperates with the annular groove 221 on the circumferential side of the ejector rod 22. The sealing groove 215 is provided on the barrel cone 211, generally located at the end position of the barrel cone 211 close to the water inlet cavity 13.

[0043] The sewage discharge unit 3 is arranged below the housing 11 and is matched with the lower cylindrical hole of the chamber 12. The connecting block 34 is fixedly connected to both sides of the top of the tank body 31. Through the cooperation of the closing assembly 23 and the opening and closing assembly 33, the opening and closing of the tank body 31 and the chamber 12 are realized. One end of the support rod 32 is fixedly connected to the inside of the tank body 31, and the other end is connected to the center of the opening and closing assembly 33 to provide a supporting force for the opening and closing assembly 33.

[0044] During use, the acidic liquid enters the chamber 12 of the valve body unit 1 through the water inlet 15. Due to the structure of the chamber 12 that is wider at the top and narrower at the bottom, the liquid rotates when it enters, and the centrifugal force generated promotes the separation of solids and liquids. The separated liquid continues to flow to the bottom of the chamber 12, and the solids or flocs will remain at the bottom of the chamber and enter the tank body 31 for deposition, and the liquid flows out through the water inlet chamber 13.

[0045] When sewage discharge is required, by rotating the tank body 31, the opening and closing assembly 33 at its top is driven to rotate, and at the same time, the closing assembly 23 is driven to rotate, so that the opening and closing assembly 33 drives the ejector rod 22 to rotate. Since the ejector rod 22 exerts an upward force, the plugging assembly 21 is displaced upward to block the water inlet chamber 13, realizing the sealing of the valve body unit 1 and the tank body 31. Rotate the opening and closing assembly 33 to open the tank body 31, so as to facilitate pouring out the acid sludge in the tank body 31.

[0046] During installation, only need to place the tank body 31 at the bottom of the housing 11, and the closing assembly 23 and the opening and closing assembly 33 cooperate and rotate to realize the fixation of the tank body 31, and at the same time realize the communication between the tank body 31 and the chamber 12, and can also realize that the ejector rod 22 is far away from the inner pipe 14. At this time, the water inlet 15, the chamber 12, the inner pipe 14 and the water inlet chamber 13 form a complete passage.

[0047] In summary, first, through the chamber 12 which is wider at the top and narrower at the bottom, the natural rotation of the acidic liquid when it enters is realized. The centrifugal force generated by this rotation promotes the effective separation of solids and liquids, flocs and liquids in the acidic liquid, improving the sewage discharge efficiency and effect. By rotating the opening and closing assembly 33 at the top of the tank body 31, the closing assembly 23 and the ejector rod 22 can be driven to rotate at the same time, realizing the displacement and sealing of the plugging assembly 21, as well as the opening and closing of the tank body 31. This not only simplifies the operation process but also improves the work efficiency.

[0048] Reference Figures 2 to 4 In an embodiment provided by the present application, the housing 11 includes a tooth groove 111 provided at the bottom of the housing 11, a water outlet 112 provided on the outer wall of the housing 11, a debris removal pipe 113 provided at the bottom of the housing 11, an L-shaped fixing block 114 provided below the housing 11, and a valve cap 115 provided above the housing 11.

[0049] As an optional embodiment, the chamber 12 is specifically in the shape of a cone hole, and is wide at the top and narrow at the bottom;

[0050] The water inlet 15 is tangent to the wide end of the chamber 12 .

[0051] In this embodiment, the acidic liquid enters the chamber 12 from the water inlet 15. Because the water inlet 15 is tangent to the wide body of the chamber 12, the acidic liquid enters along the inner wall of the chamber 12 and is affected by its own gravity. It rotates along the inner wall of the chamber 12, and the impurities in the acidic liquid are separated from the liquid by centrifugal force. The impurities fall into the tank body 31 through the impurity removal pipe 113 and accumulate to form acid sludge. The liquid enters the inner tube 14 to the water inlet chamber 13 and flows out from the water outlet 112.

[0052] As an optional embodiment, an annular groove 221 is formed on the outer wall of the top rod 22;

[0053] The protrusion 214 matches with the annular groove 221 .

[0054] In this embodiment, the tooth groove 111 is opened on the peripheral side of the bottom of the shell 11. By adjusting the position of a part of the closing component 23 in the tooth groove 111, the distance between the barrel cone 211 in the sealing component 21 and the inner tube 14 can be controlled to adjust the pressure of the outflowing liquid. The water outlet 112 is arranged at the top of the shell 11 and communicates with the water inlet chamber 13. The valve cap 115 is fixedly connected to the top of the shell 11. The chamber 12 is specifically a tapered hole with a wide upper and narrow lower shape. The water inlet 15 is tangent to the upper part of the chamber 12. The debris removal pipe 113 is connected to the lower narrow part of the bottom of the chamber 12. The L-shaped fixing block 114 is fixedly connected to the peripheral side of the bottom of the shell 11; the upper end of the barrel cone 211 is a frustum and a sealing groove 215 is opened on its lower part, and a circular hole 212 is opened inside the cylinder. There is a spring 213 inside the circular hole 212 and a cylindrical protrusion 214 on the inner wall. An annular groove 221 is opened on the outer wall of the push rod 22, and the protrusion 214 moves according to the annular groove 221.

[0055] As an optional embodiment, the closing assembly 23 includes a first fixing member 231 arranged at the bottom of the top rod 22, a first rotating member 232 arranged below the first fixing member 231, a second fixing member 233 arranged below the first rotating member 232, a toggle rod 234 arranged on the outer wall of the second fixing member 233, and an elastic member 235 arranged on the inner side of the toggle rod 234.

[0056] As an optional embodiment, the elastic member 235 cooperates with the tooth groove 111;

[0057] A circular groove 51 is formed in the center of the first fixing member 231 and the second fixing member 233;

[0058] A polygonal groove 52 is defined at the center of the first rotating member 232 .

[0059] As an optional embodiment, the opening and closing assembly 33 includes a third fixing member 331 arranged at the top of the tank body 31 , a second rotating member 332 arranged above the third fixing member 331 , and a fourth fixing member 333 arranged above the second rotating member 332 .

[0060] As an optional embodiment, the second fixing member 233 and the fourth fixing member 333 are both provided with an arc groove 53 and a circular groove 54;

[0061] A cylinder 55 is provided on each of the first rotating member 232 and the second rotating member 332;

[0062] The arcuate grooves 53 are matched with the cylinders 55 respectively.

[0063] In this embodiment, the basic structure consists of a first fixed member 231 and a second fixed member 233 arranged vertically and coaxially, with a rotatable first rotating member 232 disposed between them to form a transmission hub. Inside the housing 11, the top rod 22, through a polygonal rectangular structure, engages with the polygonal groove 51 of the first rotating member 232 to ensure the transmission of rotational motion.

[0064] It should be noted that when the acidic liquid enters the chamber 12 from the water inlet 15, its special structure of being wide at the top and narrow at the bottom guides the liquid to generate a rotating centrifugal force to achieve liquid-solid separation. By rotating the tank body 31, the connecting block 34 is driven to disengage from the L-shaped fixed block 114. The second rotating member 332 is rotated and positioned with the help of the cylinder 55 and the circular groove 54 of the fourth fixed member 333, and the opening and closing assembly 33 is synchronously driven to close to form a sealed environment. At the same time, the rotation of the fourth fixed member 333 cooperates with the cylinder 55 of the first rotating member 232 through the circular groove 54, driving the closing assembly 23 to close, and linking the top rod 22 to move the cone 211 upward to block the inner tube 14. The first end of the inner tube 14 is inserted into the sealing groove 215, forming a completely enclosed valve body unit 1 and tank body 31.

[0065] Preferably, the arc-shaped groove 53 and the circular groove 54 on the second fixing member 233 and the fourth fixing member 333 cooperate with the cylinder 55 on each rotating member to realize the control of the rotation trajectory. The specially configured toggle lever 234 has a built-in elastic member 235 that forms a positioning function with the housing tooth groove 111. By changing the engagement position of the elastic member 235, the size of the opening between the first rotating member 232 and the fixing member can be adjusted. This adjustment function is converted into an axial displacement of the cone 211 through the cooperation of the annular groove 221 of the top rod 22 and the protrusion 214 of the cone 211, thereby changing the flow cross-sectional area of the inner tube 14. When the cone 211 moves downward away from the inner tube 14, the liquid discharge in the chamber 12 slows down the flow rate; when it moves upward, the pressure increases, forming a unique flow dynamic control mechanism.

[0066] During installation, the cylinder 55 cooperates with the slots in the various fixings to achieve synchronized linkage of multiple components: As the tank 31 rotates to engage the connecting block 34 with the L-shaped fixing block 114, the first and second rotating members rotate along the arcuate slot 53 to open and close the closing assembly 23 and the opening and closing assembly 33. At this point, the spring 213 is compressed, storing elastic potential energy and providing a power reserve for subsequent sealing operations. This integrated design unifies the functions of separation, drainage, and flow regulation, while mechanical interlocking ensures reliability and ease of operation in all operating modes.

[0067] During use, acidic liquid enters chamber 12 through water inlet 15. Its wide-at-top, narrow-at-bottom shape causes the liquid to rotate, generating centrifugal force that separates the liquid from impurities. Impurities settle at the bottom of tank body 31, forming acid sludge. Liquid then flows from inner tube 14 through water inlet chamber 13 and out of water outlet 112.

[0068] During separation, the tank body 31 is rotated to separate the connecting block 34 from the L-shaped fixing block 114. Simultaneously, the second rotating member 332, through the cylinder 55 and the circular groove 54, drives the opening and closing assembly 33 to close, creating a sealed environment. The rotation of the tank body 31 also drives the first rotating member 232 to rotate, closing the closing assembly 23 and driving the push rod 22 to rotate. The cone 211 blocks the inner tube 14, forming a sealed space between the water inlet chamber 13 and the valve body, facilitating the removal of acid sludge from the tank body 31.

[0069] During installation, the tank body 31 is rotated to engage the connecting block 34 with the L-shaped fixing block 114. Simultaneously, the first and second rotating members rotate through the arcuate slot 53, causing the opening and closing assembly 33 and the closing assembly 23 to open simultaneously. The rotation of the top rod 22 causes the cone 211 to move downward, forming a passage. By adjusting the position of the elastic member within the tooth slot 111 using the toggle lever 234, the position of the cone 211 can be controlled, thereby adjusting the liquid flow rate. The farther the cone 211 is from the water inlet chamber, the slower the flow rate, and vice versa.

[0070] In summary, the chamber 12 is in the shape of a cone that is wide at the top and narrow at the bottom, and the water inlet 15 is tangent to the wide part of the chamber 12. This allows the liquid to rotate when entering the chamber 12, thereby achieving the effect of solid-liquid separation. The sealing component 21 is able to block or open the inner tube 14 through the cooperation of the circular hole 212 in the inner cavity of the cone 211, the spring 213, the protrusion 214, the annular groove 221 on the side of the push rod 22, and the sealing groove 215. This not only improves the sealing performance of the drain valve, but also makes it easier to operate. The closing component 23 and the opening and closing component 33 realize the flexible opening and closing of the tank body 31 and the chamber 12 through a series of fixed parts, rotating parts, arc grooves 53, circular grooves 54 and other structures. The cooperation of the elastic part 235 with the tooth groove 111 and the cylinder 55 on the rotating part with the arc groove 53 enables the drain valve to adjust the position of the cone 211 according to actual needs, thereby achieving control of the liquid flow rate. This adjustment function further enhances the practicality and flexibility of the sewage valve.

[0071] Reference Figure 5 , in an embodiment provided by the present application, the metering unit 4 includes a metering tank 41 and a pipeline 42 disposed below the metering tank 41.

[0072] In this embodiment, the metering tank 41 and the pipeline 42 are fixedly connected by flange threads, and the other end of the pipeline 42 is connected to the water inlet 15 by threads.

[0073] During use, pour the acidic liquid into the metering tank 41. When it is needed, the acidic liquid flows from the metering tank 41 through the pipeline 42 into the water inlet 15 of the valve body. The acidic liquid enters the chamber 12 through the water inlet 15 and spins due to the shape of being wider at the top and narrower at the bottom, separating the impurities in the acidic liquid from the liquid by the action of centrifugal force. The impurities accumulate to form acid sludge when falling from the valve body into the tank body 31, and the liquid enters the water inlet chamber 13 from the inner pipe 14 and flows out from the water outlet 112.

[0074] In summary, the plugging unit 2 realizes the control of the sealing and sewage discharge functions of the valve body unit 1 by setting structures such as the plugging assembly 21, the ejector rod 22, and the closing assembly 23. When sewage discharge is required, rotate the tank body 31 to drive the opening and closing assembly 33 and the closing assembly 23 to rotate, so that the ejector rod 22 rotates to drive the cylinder cone 211 to move upward to block the inner pipe 14 and cooperate with the sealing groove 215 to realize the sealing of the valve body unit 1 and the tank body 31. The opening and closing assembly 33 also facilitates the discharge of acid sludge in the tank body 31. It can effectively solve the problem that the valve body is prone to blockage during long-term use in an acidic liquid environment, improve the fluid control efficiency and safety of the system, and provide a strong guarantee for the efficient operation of the water treatment system.

[0075] Importantly, the above embodiments are only used to illustrate the technical solutions of the present invention and are not restrictive. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A blowdown valve for an acid metering tank, characterized in that: include A valve body unit (1) comprises a shell (11), a chamber (12) opened inside the shell (11), a water inlet chamber (13) arranged at the top of the chamber (12), an inner tube (14) arranged below the water inlet chamber (13), and a water inlet (15) arranged above the chamber (12); A blocking unit (2) comprises a blocking assembly (21) disposed below the inner inlet pipe (14), a push rod (22) disposed within the blocking assembly (21), and a closing assembly (23) disposed at the bottom of the push rod (22); The blocking assembly (21) comprises a cone (211) disposed between the water inlet cavity (13) and the push rod (22), a circular hole (212) formed at the axis of the cone (211), a spring (213) disposed in the circular hole (212), a convex block (214) embedded in the cone (211), and a sealing groove (215) disposed on the cone (211); The sewage discharge unit (3) comprises a tank body (31) arranged below the shell (11), a support rod (32) arranged in the inner cavity of the tank body (31), an opening and closing assembly (33) arranged on the top of the support rod (32), and a connecting block (34) arranged on the outer wall of the tank body (31).

2. The drain valve of the acid metering tank according to claim 1, characterized in that: The shell (11) comprises a tooth groove (111) arranged at the bottom of the shell (11), a water outlet (112) arranged on the outer wall of the shell (11), a debris removal pipe (113) arranged at the bottom of the shell (11), an L-shaped fixing block (114) arranged below the shell (11), and a valve cap (115) arranged above the shell (11).

3. The drain valve of the acid metering tank according to claim 1 or 2, characterized in that: The chamber (12) is specifically in the shape of a cone hole, and is wide at the top and narrow at the bottom; The water inlet (15) is tangent to the wide end of the chamber (12).

4. The drain valve of the acid metering tank according to claim 1 or 2, characterized in that: An annular groove (221) is provided on the outer wall of the push rod (22); The protrusion (214) cooperates with the annular groove (221).

5. The drain valve of the acid metering tank according to claim 2, characterized in that: The closing assembly (23) comprises a first fixing member (231) arranged at the bottom of the top rod (22), a first rotating member (232) arranged below the first fixing member (231), a second fixing member (233) arranged below the first rotating member (232), a toggle rod (234) arranged on the outer wall of the second fixing member (233), and an elastic member (235) arranged on the inner side of the toggle rod (234).

6. The drain valve of the acid metering tank according to claim 5, characterized in that: The elastic member (235) cooperates with the tooth groove (111); A circular groove (51) is formed at the center of each of the first fixing member (231) and the second fixing member (233); A polygon groove (52) is formed in the center of the first rotating member (232).

7. The blow-off valve of the acid metering tank according to claim 6, characterized in that: The opening and closing assembly (33) includes a third fixing member (331) arranged at the top of the tank body (31), a second rotating member (332) arranged above the third fixing member (331), and a fourth fixing member (333) arranged above the second rotating member (332).

8. The blow-off valve of the acid metering tank according to claim 7, characterized in that: Arc-shaped grooves (53) and circular grooves (54) are formed in both the second fixing member (233) and the fourth fixing member (333); Cylinders (55) are arranged on both the first rotating member (232) and the second rotating member (332); The arc-shaped grooves (53) are respectively matched with the cylinders (55).

9. The blowdown valve of the acid metering tank according to claim 8, characterized in that; Further included is a metering unit (4), which includes a metering tank (41) and a pipeline (42) arranged below the metering tank (41).

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