Manual and automatic integrated drainer with visual window

Abstract

The manual-automatic integrated drainer comprises a shell, a cavity is formed in the shell, a floating ball valve assembly is arranged in the cavity, the manual-automatic integrated drainer further comprises a manual drainage valve matched with the floating ball valve assembly, the manual drainage valve comprises an installation base, an abutting portion, a pressing rod and a reset spring, the installation base is connected with the shell in a close-fitting mode, and the pressing rod is connected with the installation base in a close-fitting mode. The pressing rod is movably connected with the mounting seat, the reset spring is arranged between the pressing rod and the mounting seat in an abutting mode, the reset spring enables the pressing rod to have the trend of moving in the direction away from the mounting seat all the time, and when the pressing rod is pressed, the pressing rod acts on the floating ball valve assembly through the abutting portion, so that the exhaust hole is opened. By pressing the pressing rod, the abutting part presses the hand valve linkage arm to move towards the lower left side, the working plate is driven to rotate around the rotating shaft together, the working plate rotates to pull the sealing plug to move rightwards, so that the sealing plug and the valve nozzle are separated from sealing fit, and then the drainage hole is opened for manual drainage operation. It is ensured that manual drainage can be conducted when automatic drainage cannot be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of drainage devices, in particular to a manual and automatic integrated drainer with a visual window. Background Art

[0002] A compressed air storage tank is a pressure vessel specially used to store compressed air. Generally, a drainer is installed at the bottom of the compressed air storage tank to discharge the accumulated water inside the tank. If the accumulated water in the compressed air storage tank is not discharged in time, the pneumatic components will be damaged, affecting the working efficiency and the service life of the pneumatic components. In serious cases, mechanical equipment accidents will occur. Therefore, the drainer is particularly important for the use of compressed air storage tanks.

[0003] Commonly used drainers include a housing and a float valve assembly, and the automatic drainage of the drainer is achieved through the float valve assembly. For example, a float type automatic drainer disclosed in the Chinese utility model patent (publication number: CN214248472U) includes a housing, a filter screen and a float valve assembly; the upper end of the side wall of the housing is provided with an air inlet; the housing is provided with a flow space for water vapor flow; the filter screen is arranged in the flow space, and the flow space is divided into a first water vapor chamber and a second water vapor chamber; the air inlet is connected to the first water vapor chamber; an impurity groove is arranged at the bottom of the first water vapor chamber, and a drainage hole and a water storage tank are arranged in the second water vapor chamber; the drainage hole is located in the water storage tank, and the float valve assembly is installed at the drainage hole. Its drainage switch is controlled by the float valve assembly, and the drainage performance is stable. When the water volume reaches the float valve assembly, the float valve assembly slowly opens the drainage hole to discharge the water in the second water vapor chamber. It only drains water when there is water, and does not drain water when there is no water, and only drains water without exhausting air.

[0004] However, the float type automatic drainer disclosed in the above-mentioned prior art cannot drain water manually in time when the float valve assembly fails and cannot drain water automatically. Failure to drain water in time will cause water accumulation in the compressed air storage tank, causing damage to pneumatic components, affecting work efficiency and the service life of pneumatic components, and even causing serious mechanical equipment accidents.

[0005] Therefore, it is necessary to improve the existing technology. Utility Model Content

[0006] The utility model aims to provide a manual-automatic drainer with a visual window in view of the defects and shortcomings of the prior art. The manual drainer is provided with a manual drain valve. When a float valve assembly fails, the accumulated water can be discharged in time through the manual drain valve.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A manual and automatic drainer with a visual window comprises a shell, a chamber is formed in the shell, a float valve assembly is arranged in the chamber, the shell is provided with an air inlet and a drain hole connected to the chamber, the float valve assembly is arranged at the drain hole, the float valve assembly can control the drain hole to open or close, and also comprises a manual drain valve matched with the float valve assembly, the manual drain valve comprises a mounting seat, an abutment, a pressing rod and a reset spring, the mounting seat is tightly connected with the shell, the pressing rod is movably connected with the mounting seat, and the pressing rod is tightly connected with the abutment after passing through the mounting seat, the reset spring is arranged between the pressing rod and the mounting seat, the reset spring makes the pressing rod always have a tendency to move in a direction away from the mounting seat, when the pressing rod is pressed, the pressing rod acts on the float valve assembly through the abutment, so as to open the exhaust hole. Further, a first sealing ring is arranged between the mounting seat and the pressing rod; a second sealing ring is arranged between the mounting seat and the shell.

[0009] Furthermore, a pressing cap is provided at the upper end of the pressing rod, and a first annular groove is provided at the lower end surface of the pressing cap for fitting with the upper end of the return spring; a second annular groove is provided at the upper end surface of the mounting seat for fitting with the lower end of the return spring.

[0010] Furthermore, a avoidance hole for the pressing rod to pass through is provided at the center of the mounting seat, and the avoidance hole cooperates with a stopper of the abutting portion.

[0011] Furthermore, a mounting groove is provided at the upper end of the abutting portion, and an embedded column is provided at the lower end of the pressing rod and is fastened to the mounting groove.

[0012] Furthermore, the float valve assembly includes a float, a linkage plate, a rotating shaft, a valve mouth and a sealing plug. The valve mouth is embedded in the drain hole. The linkage plate is rotatably arranged in the chamber through the rotating shaft. The linkage plate includes a hand valve linkage arm, a float linkage arm and a working plate. The hand valve linkage arm and the float linkage arm are both arranged on the upper part of the working plate. The free end of the hand valve linkage arm extends to the bottom of the abutment part. The free end of the float linkage arm is connected to the float. The sealing plug is arranged at the lower part of the working plate and seals with the valve mouth.

[0013] Furthermore, a third sealing ring is provided between the valve mouth and the drain hole.

[0014] Furthermore, the sealing plug is made of hydrogenated nitrile butadiene rubber material.

[0015] Furthermore, the shell is provided with an observation window for observing the water level in the chamber, and the observation window is extended along the height direction of the shell.

[0016] Furthermore, an exhaust hole is provided above the shell, and a normally closed valve core is provided at the exhaust hole.

[0017] After adopting the above structure, the utility model has the following beneficial effects:

[0018] (1) The utility model discloses a manual-automatic drainer with a visual window, comprising a shell, a chamber formed in the shell, a float valve assembly arranged in the chamber, and a manual drain valve cooperating with the float valve assembly, wherein the manual drain valve comprises a mounting seat, an abutment portion, a pressing rod and a return spring, wherein the mounting seat is tightly connected to the shell, the pressing rod is movably connected to the mounting seat, and the pressing rod is tightly connected to the abutment portion after passing through the mounting seat, and the return spring is abutted between the pressing rod and the mounting seat, and the return spring makes the pressing rod always have a tendency to move in a direction away from the mounting seat, and when the pressing rod is pressed, the pressing rod acts on the float valve assembly through the abutment portion, thereby opening the exhaust hole. The utility model presses the pressing rod so that the abutting part moves downward to press the hand valve linkage arm, so that the hand valve linkage arm moves to the lower left side, thereby driving the working plate to rotate around the rotating shaft. The rotation of the working plate will pull the sealing plug to move right, so that the sealing plug and the valve mouth are disengaged from the sealing cooperation, and then the drainage hole is opened for manual drainage operation, thus ensuring that the drainage operation can be carried out manually when automatic drainage cannot be achieved, avoiding water accumulation in the compressed air storage tank due to untimely drainage of the drainer, which will damage the pneumatic components and affect the working efficiency and the service life of the pneumatic components.

[0019] (2) The utility model discloses a manual-automatic drainer with a visual window, comprising a shell, a chamber formed in the shell, a float valve assembly arranged in the chamber, the float valve assembly comprising a float, a linkage plate, a rotating shaft, a valve nozzle and a sealing plug, the valve nozzle is embedded in the drainage hole, the linkage plate is rotatably arranged in the chamber through the rotating shaft, the linkage plate comprises a hand valve linkage arm, a float linkage arm and a working plate, the hand valve linkage arm and the float linkage arm are both arranged on the upper part of the working plate, the free end of the hand valve linkage arm extends to the bottom of the abutment part, the free end of the float linkage arm is connected to the float, the sealing plug is arranged at the lower part of the working plate and is sealed with the valve nozzle. The utility model controls the automatic opening or closing of the drain hole through a float valve assembly, which can effectively improve the drainage performance. The float valve assembly is arranged in the chamber of the drain device. When the water level in the chamber is higher than the lower end surface of the float ball, the float ball floats up under the action of buoyancy, and the float ball drives the float ball linkage arm connected to the float ball to move upward, thereby driving the working plate to rotate around the rotating shaft together, and the rotation of the working plate will pull the sealing plug to move right, so that the sealing plug and the valve mouth are disengaged from the sealing cooperation, and then the drain hole is opened for automatic drainage operation; when the water level in the chamber is lower than the lower end surface of the float ball, the float ball moves downward under the action of its own gravity, and the float ball drives the float ball linkage arm connected to the float ball to move downward, thereby driving the working plate to rotate around the rotating shaft together, and the rotation of the working plate will pull the sealing plug to move left, so that the sealing plug and the valve mouth are sealed and cooperated, and then the drain hole is closed, and the automatic drainage operation is stopped. This structural design ensures that the drain device will not discharge air during the drainage process, and the design of the float valve assembly can accurately open and close the drain hole of the drain device.

[0020] (3) The utility model discloses a manual and automatic drainer with a visual window, wherein the float valve assembly includes a float, a linkage plate, a rotating shaft, a valve nozzle and a sealing plug, and the valve nozzle is embedded in the drain hole. The valve nozzle and the drain hole are designed as a split structure, which has the following advantages: ① It is convenient to improve the processing accuracy of the valve nozzle and improve the air tightness of the valve nozzle; ② The valve nozzle can be installed after the shell is processed to avoid the shell from being damaged by collision during the processing; ③ When the valve nozzle is damaged, only the valve nozzle needs to be replaced without scrapping the entire shell, which saves costs; ④ The drainage volume can be adjusted by replacing the valve nozzle. Specifically, the drainage volume can be adjusted by replacing valve nozzles with different apertures. The valve nozzle with a larger central aperture will have a larger drainage volume, and the valve nozzle with a smaller central aperture will have a smaller drainage volume, which makes the drainer more applicable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific implementation methods of the present utility model, the drawings required for use in the description of the specific implementation methods will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is an exploded view of the overall structure of the utility model;

[0024] Figure 3 It is a cross-sectional view of the overall structure of the utility model (the drainage hole is in a closed state);

[0025] Figure 4 The utility model Figure 3 A schematic diagram of the structure at A;

[0026] Figure 5 It is a cross-sectional view of the overall structure of the utility model (the drainage hole is in an open state);

[0027] Figure 6 It is an exploded view of the manual drain valve of the utility model.

[0028] Figures 1 to 6 The bid number is:

[0029] 1. Shell; 11. Chamber; 12. Air inlet; 13. Drain hole; 14. Exhaust hole; 2. Float valve assembly; 21. Float; 22. Linkage plate; 221. Hand valve linkage arm; 222. Float linkage arm; 223. Working plate; 23. Rotating shaft; 24. Valve nozzle; 25. Sealing plug; 26. Third sealing ring; 3. Manual drain valve; 31. Mounting seat; 311. Second annular groove; 312. Avoidance hole; 32. Abutment portion; 321. Mounting groove; 33. Pressing rod; 331. Pressing cap; 3311. First annular groove; 332. Embedded column; 34. Reset spring; 35. First sealing ring; 36. Second sealing ring; 4. Observation window. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0031] In the description of the present invention, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply 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 on the present invention.

[0032] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly defined and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0034] In the present utility model, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0035] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this utility model are only for illustrative purposes and do not represent the only implementation method.

[0036] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0037] like Figures 1 to 6 As shown, the manual and automatic drainer with a visual window includes a shell 1, a chamber 11 is formed in the shell 1, a float valve assembly 2 is arranged in the chamber 11, the shell 1 is provided with an air inlet 12 and a drain hole 13 connected to the chamber 11, the float valve assembly 2 is arranged at the drain hole 13, the float valve assembly 2 can control the drain hole 13 to be opened or closed, and also includes a manual drain valve 3 matched with the float valve assembly 2, the manual drain valve 3 includes a mounting seat 31, an abutment portion 32, a pressing rod 33 and a reset Spring 34, the mounting seat 31 is tightly connected to the shell body 1, the pressing rod 33 is movably connected to the mounting seat 31, and the pressing rod 33 is tightly connected to the abutment portion 32 after passing through the mounting seat 31, and the return spring 34 is abutted between the pressing rod 33 and the mounting seat 31. The return spring 34 makes the pressing rod 33 always have a tendency to move in the direction away from the mounting seat 31. When the pressing rod 33 is pressed, the pressing rod 33 acts on the float valve assembly 2 through the abutment portion 32, thereby opening the exhaust hole 14.

[0038] Based on the above embodiments, the utility model aims to solve the problem of providing a manual-automatic drainer with a visual window, comprising a shell 1, a chamber 11 being formed in the shell 1, a float valve assembly 2 being arranged in the chamber 11, and a manual drain valve 3 cooperating with the float valve assembly 2, the manual drain valve 3 comprising a mounting seat 31, an abutment portion 32, a pressing rod 33 and a reset spring 34, the mounting seat 31 being tightly connected to the shell 1, the pressing rod 33 being movably connected to the mounting seat 31, and the pressing rod 33 being tightly connected to the abutment portion 32 after passing through the mounting seat 31, the reset spring 34 being abutted between the pressing rod 33 and the mounting seat 31, the reset spring 34 making the pressing rod 33 always have a tendency to move in a direction away from the mounting seat 31, and when the pressing rod 33 is pressed, the pressing rod 33 acts on the float valve assembly 2 through the abutment portion 32, thereby opening the exhaust hole 14. The utility model presses the pressing rod 33 so that the abutting portion 32 moves downward to press the hand valve linkage arm 221, so that the hand valve linkage arm 221 moves to the lower left side, thereby driving the working plate 223 to rotate around the rotating shaft 23, and the rotation of the working plate 223 will pull the sealing plug 25 to move right, so that the sealing plug 25 and the valve mouth 24 are disengaged from the sealing cooperation, and then the drainage hole 13 is opened for manual drainage operation, which ensures that the drainage operation can be performed manually when automatic drainage cannot be achieved, and avoids water accumulation in the compressed air storage tank due to untimely drainage of the drainer, which damages the pneumatic components and affects the working efficiency and the service life of the pneumatic components. After completing manual drainage, release the pressure on the pressing rod 33, and the pressing rod 33 moves upward under the elastic force of the return spring 34, so that the abutment portion 32 is disengaged from the pressure of the hand valve linkage arm 221. At this time, the float 21 moves downward under the action of its own gravity, and drives the float linkage arm 222 and the working plate 223 to rotate around the rotating shaft 23. The rotation of the working plate 223 will pull the sealing plug 25 to move left, so that the sealing plug 25 and the valve mouth 24 are sealed, thereby closing the drainage hole 13 and stopping the manual drainage operation.

[0039] As another preferred solution of the present invention, a first sealing ring 35 is provided between the mounting seat 31 and the pressing rod 33; and a second sealing ring 36 is provided between the mounting seat 31 and the housing 1. Figure 4 As shown, the first sealing ring 35 and the second sealing ring 36 are both made of flexible rubber material. The flexible rubber material enables the first sealing ring 35 to fit better with the mounting seat 31 and the pressing rod 33, thereby effectively playing a sealing role; the flexible rubber material enables the second sealing ring 36 to fit better with the mounting seat 31 and the housing 1, thereby effectively playing a sealing role.

[0040] As another preferred embodiment of the present invention, the upper end of the pressing rod 33 is provided with a pressing cap 331, and the lower end surface of the pressing cap 331 is provided with a first annular groove 3311 for fitting with the upper end of the return spring 34; the upper end surface of the mounting seat 31 is provided with a second annular groove 311 for fitting with the lower end of the return spring 34. Figure 4 As shown, the first annular groove 3311 and the second annular groove 311 both play a guiding role for the reset spring 34. During installation, the upper end of the reset spring 34 is accommodated in the first annular groove 3311, and the lower end of the reset spring 34 is accommodated in the second annular groove 311. This structural design prevents the reset spring 34 from being skewed during the movement of the pressing rod 33.

[0041] As another preferred embodiment of the present invention, the center of the mounting seat 31 is provided with an escape hole 312 for the pressing rod 33 to pass through, and the escape hole 312 is matched with the abutment portion 32 stopper. The upper end of the abutment portion 32 is provided with a mounting groove 321, and the lower end of the pressing rod 33 is provided with an embedded column 332 that is fastened to the mounting groove 321. Figure 4 As shown, the embedded column 332 is fastened to the mounting groove 321 after passing through the avoidance hole 312, and the inner diameter of the avoidance hole 312 is smaller than the outer diameter of the abutment portion 32, so that the avoidance hole 312 cooperates with the abutment portion 32 stopper to prevent the pressing rod 33 and the abutment portion 32 from falling out of the mounting seat 31 under the elastic force of the reset spring 34 after being fastened.

[0042] As another preferred embodiment of the present invention, the float valve assembly 2 includes a float 21, a linkage plate 22, a rotating shaft 23, a valve nozzle 24 and a sealing plug 25. The valve nozzle 24 is embedded in the drain hole 13. The linkage plate 22 is rotatably disposed in the chamber 11 through the rotating shaft 23. The linkage plate 22 includes a hand valve linkage arm 221, a float linkage arm 222 and a working plate 223. The hand valve linkage arm 221 and the float linkage arm 222 are both disposed on the upper part of the working plate 223. The free end of the hand valve linkage arm 221 extends to the bottom of the abutment portion 32. The free end of the float linkage arm 222 is connected to the float 21. The sealing plug 25 is disposed on the lower part of the working plate 223 and is sealed with the valve nozzle 24. A third sealing ring 26 is disposed between the valve nozzle 24 and the drain hole 13. In this embodiment, Figure 2 , Figure 3 and Figure 4As shown, the drainer is provided with a float valve assembly 2 in the chamber 11. When the water level in the chamber 11 is higher than the lower end surface of the float 21, the float 21 floats up under the action of buoyancy, and the float 21 drives the float linkage arm 222 connected to the float 21 to move upward, so that the working plate 223 can rotate around the rotating shaft 23 together, and the rotation of the working plate 223 will pull the sealing plug 25 to move right, so that the sealing plug 25 and the valve mouth 24 are disengaged from the sealing cooperation, and then the drain hole 13 is opened for automatic drainage. This structural design makes the drainer not discharge air during the drainage process, and can achieve automatic drainage. And drainage is only carried out when the water volume in the chamber 11 reaches a certain water level, reducing the idling of the drain valve. When the water level in the chamber 11 is lower than the lower end surface of the float 21, the float 21 moves downward under the action of its own gravity, and the float 21 drives the float linkage arm 222 connected to the float 21 to move downward, so that the working plate 223 can rotate around the rotating shaft 23 together, and the rotation of the working plate 223 will pull the sealing plug 25 to move left, so that the sealing plug 25 and the valve mouth 24 are sealed and matched, thereby closing the drain hole 13 and stopping the drainage operation. The design of the float valve assembly 2 can accurately open and close the drain. In this embodiment, if Figure 2 As shown, the rotating shaft 23 is disposed on the floating ball linkage arm 222. In this embodiment, as shown in FIG. Figure 2 As shown, the valve mouth 24 and the drain hole 13 are designed as a split structure, which has the following advantages: ① It is easy to improve the processing accuracy of the valve mouth 24 and improve the air tightness at the valve mouth 24; ② The valve mouth 24 can be installed after the shell 1 is processed to avoid the shell 1 from being damaged by the valve mouth 24 during the processing; ③ When the valve mouth 24 is damaged, it is only necessary to replace the valve mouth 24 without scrapping the entire shell 1, saving costs; ④ The drainage volume can be adjusted by replacing the valve mouth 24. Specifically, the drainage volume can be adjusted by replacing the valve mouth 24 with different apertures. The valve mouth 24 with a larger central aperture will have a larger drainage volume, and the valve mouth 24 with a smaller central aperture will have a smaller drainage volume, making the drainer more applicable. In this embodiment, Figure 5 As shown, a third sealing ring 26 is provided between the valve mouth 24 and the drain hole 13. The third sealing ring 26 is made of a flexible rubber material, and the flexible rubber material enables the third sealing ring 26 to better fit the valve mouth 24 and the drain hole 13, thereby effectively playing a sealing role.

[0043] As another preferred embodiment of the present invention, the sealing plug 25 is made of hydrogenated nitrile butadiene rubber. In this embodiment, the hydrogenated nitrile butadiene rubber has the advantages of good oil resistance, heat resistance, compression permanent deformation resistance, high strength, high tearing performance, etc., and is used as the material for making the sealing plug 25, which can effectively improve the excellent properties of the sealing plug 25. The hydrogenated nitrile butadiene rubber material has a high temperature resistance of 130 to 180°C and a cold resistance of -55 to -38°C, and can adapt to the sealing between components in a variety of environments and occasions.

[0044] As another preferred embodiment of the present invention, the housing 1 is provided with an observation window 4 for observing the water level in the chamber 11, and the observation window 4 is extended along the height direction of the housing 1. Figure 1 As shown, the setting of the observation window 4 facilitates the observation of the water level changes in the chamber 11 and helps to promptly detect abnormal automatic drainage of the float valve assembly 2. When abnormal automatic drainage of the float valve assembly 2 is found, timely drainage can be achieved through the manual drain valve 3.

[0045] As another preferred embodiment of the present invention, an exhaust hole 14 is provided above the housing 1, and a normally closed valve core (not shown in the figure) is provided at the exhaust hole 14. Figure 1 As shown, the setting of the exhaust hole 14 can realize the manual exhaust function. Specifically, when the pressure of the drainer is too high due to an unexpected situation and the front air source has been cut off, the manual drain valve 3 may not be able to press the pressing rod 33 due to the excessive pressure in the chamber 11. At this time, manual exhaust and pressure reduction can be achieved through the normally closed valve core set in the exhaust hole 14, and the pressure in the chamber 11 can be reduced before the manual drain valve 3 is used to drain the water.

[0046] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the present utility model.

Claims

1. A manual and automatic drainer with a visual window, comprising a housing (1), wherein a chamber (11) is formed in the housing (1), wherein a float valve assembly (2) is arranged in the chamber (11), wherein the housing (1) is provided with an air inlet (12) and a drain hole (13) which are in communication with the chamber (11), wherein the float valve assembly (2) is arranged at the drain hole (13), and wherein the float valve assembly (2) can control the drain hole (13) to be opened or closed, and wherein: The invention also comprises a manual drain valve (3) matched with the float valve assembly (2), the manual drain valve (3) comprising a mounting seat (31), an abutment portion (32), a pressing rod (33) and a return spring (34), the mounting seat (31) being tightly connected to the housing (1), the pressing rod (33) being movably connected to the mounting seat (31), and the pressing rod (33) being tightly connected to the abutment portion (32) after passing through the mounting seat (31), the return spring (34) being abutted between the pressing rod (33) and the mounting seat (31), the return spring (34) making the pressing rod (33) always have a tendency to move in a direction away from the mounting seat (31), and when the pressing rod (33) is pressed, the pressing rod (33) acts on the float valve assembly (2) through the abutment portion (32), thereby opening the exhaust hole (14).

2. The manual and automatic integrated drainer with a visual window according to claim 1, characterized in that: A first sealing ring (35) is provided between the mounting seat (31) and the pressing rod (33); and a second sealing ring (36) is provided between the mounting seat (31) and the housing (1).

3. The manual and automatic drainer with a visual window according to claim 1, characterized in that: The upper end of the pressing rod (33) is provided with a pressing cap (331), and the lower end surface of the pressing cap (331) is provided with a first annular groove (3311) for fitting with the upper end of the return spring (34); the upper end surface of the mounting seat (31) is provided with a second annular groove (311) for fitting with the lower end of the return spring (34).

4. The manual and automatic integrated drainer with a visual window according to claim 1, characterized in that: The center of the mounting seat (31) is provided with an avoidance hole (312) for the pressing rod (33) to pass through, and the avoidance hole (312) is matched with the abutment portion (32) for stopping.

5. The manual and automatic integrated drainer with a visual window according to claim 1, characterized in that: The upper end of the abutment portion (32) is provided with a mounting groove (321), and the lower end of the pressing rod (33) is provided with an embedded column (332) which is fastened to the mounting groove (321).

6. The manual and automatic integrated drainer with a visual window according to claim 1, characterized in that: The float valve assembly (2) comprises a float (21), a linkage plate (22), a rotating shaft (23), a valve nozzle (24) and a sealing plug (25); the valve nozzle (24) is embedded in the drainage hole (13); the linkage plate (22) is rotatably arranged in the chamber (11) via the rotating shaft (23); the linkage plate (22) comprises a hand valve linkage arm (221), a float linkage arm (222) and a working plate (223); the hand valve linkage arm (221) and the float linkage arm (222) are both arranged at the upper part of the working plate (223); the free end of the hand valve linkage arm (221) extends to the lower part of the abutting portion (32); the free end of the float linkage arm (222) is connected to the float (21); and the sealing plug (25) is arranged at the lower part of the working plate (223) and is sealed with the valve nozzle (24).

7. The manual and automatic drainer with a visual window according to claim 6, characterized in that: A third sealing ring (26) is provided between the valve mouth (24) and the drainage hole (13).

8. The manual and automatic integrated drainer with a visual window according to claim 6, characterized in that: The sealing plug (25) is made of hydrogenated nitrile butadiene rubber material.

9. The manual and automatic integrated drainer with a visual window according to claim 1, characterized in that: The shell (1) is provided with an observation window (4) for observing the water level in the chamber (11); the observation window (4) is extended along the height direction of the shell (1).

10. The manual and automatic integrated drainer with a visual window according to claim 1, characterized in that: An exhaust hole (14) is provided above the housing (1), and a normally closed valve core is provided at the exhaust hole (14).

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