Pneumatic quick discharge valve

Abstract

The utility model relates to a pneumatic quick discharge valve. Comprising a shell, a bottom shell, a guide rod, a spring, a sealing ring, a valve cover and a mounting flange, the shell is in threaded connection with the bottom shell, the spring is fixed on a spring fixing column of the bottom shell and is buckled with the guide rod, the valve cover is mounted at the top end of the guide rod through threads, and the mounting flange is welded at the bottom of the cleaning tank and is in threaded connection with the shell; the sealing ring is embedded into the sealing grooves of the shell and the bottom shell to form a double-layer sealing structure; the shell is provided with a gas connector, and the guide rod is driven by switching the gas input direction to drive the valve deck to open or close the drainage channel. The technical problems that in an existing technical scheme, operation of a manual valve is time-consuming, response of an electric valve is delayed, waste liquid is retained, stains are prone to being deposited at the bottom of a tank, the follow-up cleaning quality is affected, meanwhile, an existing valve body is mostly designed in an integrated mode, overall disassembly is needed during maintenance, and easily-damaged parts such as a sealing piece or a spring are difficult to replace are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of quick drain valve especially relates to a pneumatic quick drain valve. BACKGROUND

[0002] In the field of industrial cleaning, the waste liquid discharge efficiency of the cleaning tank directly affects the cleaning effect and production efficiency. The traditional drain valve adopts manual or electric drive mode, but the manual valve operation is time-consuming, and the electric valve response is delayed, which causes the waste liquid to be retained, the stains to be easily deposited on the tank bottom, and the subsequent cleaning quality to be affected. At the same time, the existing valve body adopts an integrated design, and the entire valve body needs to be disassembled during maintenance, which makes it difficult to replace the sealing element or the spring and other vulnerable parts, increases the downtime, and the size of the drain port is fixed, so the number or layout of the valve cannot be flexibly adjusted according to the volume of the tank, which limits the process optimization space. SUMMARY

[0003] The embodiment of the present application provides a pneumatic quick drain valve, which solves the technical problems of time-consuming manual valve operation, delayed electric valve response, retained waste liquid, easily deposited stains on the tank bottom, affected subsequent cleaning quality, and difficult to replace the sealing element or the spring and other vulnerable parts during maintenance due to the integrated design of the existing valve body.

[0004] The technical scheme adopted by the embodiment of the present application is as follows:

[0005] A pneumatic quick drain valve, comprising a shell, a bottom shell, a guide rod, a spring, a sealing ring, a valve cover and a mounting flange; the shell is connected with the bottom shell through threads, the spring is fixed on the spring fixing column of the bottom shell and buckled with the guide rod, the valve cover is installed on the top end of the guide rod through threads, and the mounting flange is welded on the bottom of the cleaning tank and connected with the shell through threads; the sealing ring is embedded in the sealing groove of the shell and the bottom shell to form a double-layer sealing structure; the shell is provided with a gas interface, and the guide rod drives the valve cover to open or close the drain passage by switching the input direction of the gas.

[0006] Further technical solutions are as follows: the size of the shell and the bottom shell is adapted and adjusted according to the capacity of the cleaning tank and the drain requirement.

[0007] Further technical solutions are as follows: the contact surface of the guide rod and the valve cover is a conical sealing surface, which tightly fits with the valve seat of the bottom shell when closed.

[0008] Further technical solutions are as follows: the shell, the bottom shell and the guide rod are all made of acid and alkali resistant engineering materials.

[0009] One or more technical solutions provided in the embodiment of the present application have at least the following technical effects or advantages:

[0010] 1、Due to the adoption of the shell, bottom shell, guide rod, spring, sealing ring, valve cover and mounting flange, the valve is opened and closed in seconds through pneumatic driving, the liquid discharge speed is significantly improved compared with traditional manual valves, and stain deposition caused by residual waste liquid is avoided. The assembly is precisely machined, the size can be flexibly adjusted, different capacity cleaning tanks can be matched, and the customization cost is reduced. By adopting the double sealing ring combined with the conical sealing surface design, there is no risk of leakage. The valve body and the flange can be quickly disassembled, and the sealing ring or spring can be replaced without disassembling the tank body, thereby greatly reducing the maintenance time. Compared with the traditional manual valve, the pneumatic control does not require manual intervention, and the size of the liquid discharge port can be adjusted, solving the problem of deposition and blockage; compared with the self-cleaning valve, the structure does not need to be additionally provided with a filter device, so that the cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is an overall structure explosion diagram of the pneumatic quick discharge valve in the embodiment of the utility model.

[0012] Figure 2 It is an overall structure cross-sectional view of the pneumatic quick discharge valve in the embodiment of the utility model.

[0013] In the figure: 1, shell; 2, bottom shell; 3, guide rod; 4, spring; 5, sealing ring; 6, valve cover; 7, mounting flange. DETAILED DESCRIPTION

[0014] The embodiment of the application provides a kind of pneumatic quick discharge valve, solve the technical problem in prior art scheme that manual valve operation time-consuming, electric valve response delay, resulting in waste liquid retention, stain is easily deposited in tank bottom, affect subsequent cleaning quality, while existing valve body is mostly designed in integral, when maintaining, it is difficult to replace sealing element or spring and other vulnerable components when being disassembled as a whole.

[0015] The technical scheme in the embodiment of the application is to solve the above problems, and the general idea is as follows:

[0016] In order to better understand the above technical scheme, the above technical scheme will be described in detail in combination with the drawings of the specification and the specific embodiments.

[0017] A kind of pneumatic quick discharge valve, as shown in Figure 1 And Figure 2 It includes shell 1, bottom shell 2, guide rod 3, spring 4, sealing ring 5, valve cover 6 and mounting flange 7. Shell 1 is connected with bottom shell 2 by thread, spring 4 is fixed on spring fixed column of bottom shell 2, and is buckled with guide rod 3, valve cover 6 is installed at the top of guide rod 3 by thread, and mounting flange 7 is welded on the bottom of cleaning tank and is connected with shell 1 by thread. Sealing ring 5 is embedded in the sealing groove of shell 1 and bottom shell 2, forming a double sealing structure. Shell 1 is provided with gas interface, which drives guide rod 3 to drive valve cover 6 to open or close liquid discharge channel by switching gas input direction.

[0018] The size of the shell 1 and the bottom shell 2 is adjusted according to the capacity of the cleaning tank and the drainage requirement.

[0019] The contact surface of the guide rod 3 and the valve cover 6 is a conical sealing surface, which is tightly combined with the valve seat of the bottom shell 2 when closed.

[0020] The shell 1, the bottom shell 2 and the guide rod 3 are made of acid and alkali resistant engineering materials.

[0021] The shell 1 and the bottom shell 2 are connected by threads, and are internally provided with a gas chamber and a drainage channel. The bottom of the guide rod 3 is buckled with the spring 4, and the top is connected with the valve cover 6 by threads. The sealing rings 5 are respectively embedded in the sealing grooves of the shell 1 and the bottom shell 2 to form double leakage prevention. The mounting flange 7 is welded to the bottom of the cleaning tank, and the shell 1 is fixed with the flange 7 by external threads.

[0022] The installation steps are as follows: the sealing rings 5 are installed into the sealing grooves of the shell 1 and the bottom shell 2. The spring 4 is sleeved on the fixed column of the bottom shell 2, the guide rod 3 is buckled with the spring 4, and then the shell 1 and the bottom shell 2 are tightened. The valve cover 6 is screwed into the top end threads of the guide rod 3. The mounting flange 7 is welded to the bottom of the cleaning tank, and the shell 1 is connected with the flange 7 by threads.

[0023] The working process is as follows: in the open state, compressed air enters the chamber of the shell 1 through the gas interface, pushes the guide rod 3 to move downward, the valve cover 6 is separated from the valve seat, and the waste liquid is quickly discharged from the drainage port; in the closed state, the gas direction is switched, the guide rod 3 rises under the resetting force of the spring 4, and the valve cover 6 is tightly combined with the valve seat.

[0024] Due to the adoption of the shell 1, the bottom shell 2, the guide rod 3, the spring 4, the sealing ring 5, the valve cover 6 and the mounting flange 7, the valve is opened and closed in seconds through pneumatic driving, the drainage speed is significantly improved compared with the traditional manual valve, and the stain deposition caused by waste liquid residue is avoided. The components are precisely machined, the size can be flexibly adjusted, and the cleaning tank of different capacity can be adapted, thereby reducing the customization cost. Through the adoption of the double-layer sealing ring 5 combined with the conical sealing surface design, there is no risk of leakage. The valve body and the flange 7 can be quickly disassembled, and the sealing ring 5 or the spring 4 can be replaced without disassembling the tank body, thereby greatly reducing the maintenance time. Compared with the traditional manual valve, the pneumatic control does not require manual intervention, and the size of the drainage port can be adjusted, thereby solving the deposition and blockage problem; compared with the self-cleaning valve, the structure does not need to be additionally provided with a filter device, thereby reducing the cost.

[0025] Although the preferred embodiments of the present application have been described, those skilled in the art who obtain the basic creative concept can make further changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications falling within the scope of the present application.

[0026] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.

Claims

1. A pneumatic quick exhaust valve characterized by, Including shell (1), bottom shell (2), guide rod (3), spring (4), sealing ring (5), valve cover (6) and mounting flange (7);The shell (1) is connected with the bottom shell (2) by screw thread, the spring (4) is fixed on the spring fixed column of the bottom shell (2), and is buckled with the guide rod (3), the valve cover (6) is installed on the top end of the guide rod (3) by screw thread, the mounting flange (7) is welded on the bottom of the cleaning tank and is connected with the shell (1) by screw thread;The sealing ring (5) is embedded in the sealing groove of the shell (1) and the bottom shell (2), forming a double-layer sealing structure;The shell (1) is provided with a gas interface, which drives the guide rod (3) to drive the valve cover (6) to open or close the liquid discharge channel by switching the gas input direction.

2. A pneumatic quick exhaust valve as claimed in claim 1, characterized in that The size of the shell (1) and the bottom shell (2) is adjusted according to the capacity of the cleaning tank and the liquid discharge demand.

3. A pneumatic quick exhaust valve as defined in claim 1, wherein The contact surface of the guide rod (3) and the valve cover (6) is a conical sealing surface, which is tightly combined with the valve seat of the bottom shell (2) when closed.

4. A pneumatic quick exhaust valve as defined in claim 1, wherein The shell (1), the bottom shell (2) and the guide rod (3) are all made of acid and alkali resistant engineering materials.

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