CN220816727U - Exhaust valve with filtering capability - Google Patents

Abstract

The utility model provides an exhaust valve with a filtering function, comprising a valve body and a valve cover that are detachably and sealedly connected, the lower end of the valve body being provided with a communicating hole, the inner wall of the valve cover being provided with a filter cartridge, the outer wall being provided with a corresponding mounting portion, the side wall of the filter cartridge being provided with a plurality of first filter holes, the mounting portion being inserted with a valve core extending into the filter cartridge, the valve core being provided with an exhaust passage, the end of the valve cover corresponding to the valve core being provided with a rotating seal assembly, the rotating seal assembly comprising a plug, a rotating member, a connecting member, and a primary spring, one end of the rotating member being rotatably connected to the connecting member, the other end extending into the filter cartridge and being detachably and fixedly connected to the plug, one end of the primary spring being fixedly connected to the inner wall of the valve cover, the other end being fixedly connected to the connecting member and simultaneously driving the plug to abut against the end face of the valve core, a float being provided in the valve body that can rise or fall with the liquid level and the upper end of which is rotatably connected to the rotating member; the utility model has a reasonable structural design, good sealing performance, and is easy to disassemble as a whole.

Description

An exhaust valve with filtering function

Technical Field

The utility model relates to an exhaust valve with a filtering function.

Background technique

At present, the common exhaust structure in the exhaust valve usually uses the gravity of the float to pull one end of the lever downward. At this time, the lever is in an inclined state, and a gap appears at the contact part between the lever and the exhaust hole. The gas is discharged from the exhaust hole through this gap. As the air is discharged, the liquid level rises, and the float floats upward under the buoyancy of the liquid. The sealing end face on the lever gradually presses on the exhaust hole until the entire exhaust hole is completely blocked. At this time, the sealing end face of the lever is supported by a spring, but the spring is constantly bent and stretched accordingly with the movement of the lever, which will have a certain impact on the service life of the spring, and in severe cases, it will affect the sealing of the exhaust valve; and when the existing exhaust valve is used in a pipeline where steam is generated, the steam in the pipeline is often discharged from the exhaust channel together with the gas, which will have certain limitations when used in occasions with high cleanliness requirements; therefore, the existing technology still needs to be improved and developed.

Summary of the invention

In view of the deficiencies existing in the above problems, the utility model provides an exhaust valve with a filtering function.

To achieve the above-mentioned purpose, the utility model provides an exhaust valve with a filtering function, comprising a valve body and a valve cover that are detachably and sealedly connected, the lower end of the valve body being provided with a communicating hole, the inner wall of the valve cover being provided with a filter cartridge, the outer wall being provided with a mounting portion correspondingly, the side wall of the filter cartridge being provided with a plurality of first filter holes, the mounting portion being inserted with a valve core extending into the filter cartridge, the valve core being provided with an exhaust passage, and the end of the valve core in the valve cover being provided with a rotating seal assembly, the rotating seal assembly comprising a plug, a rotating member, a connecting member, and a primary spring, the rotating member having one end rotatably connected to the connecting member, the other end extending into the filter cartridge and being detachably and fixedly connected to the plug, the primary spring having one end fixedly connected to the inner wall of the valve cover, the other end fixedly connected to the connecting member and simultaneously driving the plug to abut against the end face of the valve core, the valve body being provided with a float that can rise or fall with the liquid level and the upper end of which is rotatably connected to the rotating member, the plug can be driven to rotate by the vertical movement of the float, and the valve core can be simultaneously controlled to switch between exhaust and sealing states.

Furthermore, a filter element is provided in the mounting portion, and a plurality of second filter holes inclined downward are provided in parallel on the end face of the filter element close to the valve core. A joint for pressing the filter element is screwed on the outer wall of the mounting portion, and a first sealing ring is provided between the two. An air outlet channel is provided in the joint.

Furthermore, the lowest point of the air outlet channel is higher than any position of the second filter hole arranged at the lowest point.

Furthermore, a gear member is sleeved on the rotating member corresponding to the central axis of the float, a connecting portion is provided on the upper end of the float, a plurality of racks for cooperating with the gear member are provided on one side of the connecting portion, sliders are symmetrically provided on the outer wall of the float, and a slide rail is correspondingly provided on the inner wall of the valve body.

Furthermore, the contact ends of the rotating member and the connecting member are respectively provided with matching annular protrusions and annular grooves.

Furthermore, the valve core is provided with a shielding portion at one end close to the plug, and an exhaust port is opened below the shielding portion, and the diameter of the exhaust port is smaller than the inner radius of the valve core; the rotation axis of the plug and the central axis of the valve core are in the same straight line, and the diameter of the contact surface with the shielding portion is between the diameter of the exhaust port and the outer radius of the end of the valve core close to the plug.

Furthermore, a partition valve body is threadedly connected to the lower end of the valve body, and a second sealing ring is provided between the two. A partition valve core is movably connected to the partition valve body, and a plurality of liquid inlets are evenly provided on the side wall of the partition valve core.

Furthermore, a secondary spring is provided between the isolating valve body and the isolating valve core.

Furthermore, a filter screen is provided in the valve core of the isolation valve.

Furthermore, a conical sealing gasket is provided between the valve body and the valve cover, and a third sealing ring is provided between the valve cover and the valve core.

The beneficial effects of the utility model compared with the prior art are as follows: the utility model utilizes the vertical movement of the float to drive the plug to rotate, and simultaneously controls the valve core to switch between the exhaust state and the sealing state, and has a reasonable structural design, good sealing performance, and is easy to disassemble as a whole; at the same time, the filter cartridge sleeved on the outer side of the valve core and the filter element arranged in the mounting portion can separate the steam from the water vapor, which can prevent the liquid in the pipeline from being discharged to the external environment, thereby ensuring the high cleanliness requirements of the external environment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a cross-sectional view of an exhaust valve with filtering function according to the present invention;

FIG2 is an enlarged view of point A in FIG1 ;

FIG3 is an enlarged view of point B in FIG1 ;

FIG. 4 is a plan view of the float involved in this solution.

Detailed ways

As shown in Figure 1, an exhaust valve with a filtering function according to an embodiment of the utility model includes a valve body 3 and a valve cover 4 that are detachably sealed and connected. Preferably, the valve cover 4 is screwed on the valve body 3, and a conical sealing gasket 22 is provided between the valve body 3 and the valve cover 4. The conical sealing gasket 22 is used to improve the sealing performance when the valve body 3 and the valve cover 4 are connected.

Further, as shown in Figure 1, a connecting hole 31 is provided at the lower end of the valve body 3 in this embodiment, and a partition valve body 17 is also screwed to the outer wall surface of the lower end of the valve body 3, and a second sealing ring 18 is provided between the two, and a partition valve core 19 is movably connected inside the partition valve body 17. Specifically, a secondary spring 20 is provided between the partition valve body 17 and the partition valve core 19; at the same time, a plurality of liquid inlets 191 are evenly provided on the side wall of the partition valve core 19, and a filter screen 21 is provided inside. The partition valve core 19 cooperates with the secondary spring 20 to control the opening size of the liquid inlet 191, and the filter screen 21 can filter the liquid flowing in from the liquid inlet 191, so as to prevent impurities from entering the valve body 3 and affecting the exhaust and sealing of the exhaust valve.

Further, as shown in Figures 1 and 2, the inner wall of the valve cover 4 in this embodiment is provided with a filter cartridge 5, and a corresponding mounting portion 41 is provided on the outer wall. A plurality of first filter holes 51 are provided on the side wall of the filter cartridge 5. The filter cartridge 5 can be made of stainless steel and is mainly used for preliminary water vapor separation of steam. A valve core 6 extending into the filter cartridge 5 is inserted in the mounting portion 41, and a third sealing ring 23 is provided between the valve cover 4 and the valve core 6, and an exhaust channel 61 is provided in the valve core 6. At the same time, a filter element 13 is also provided in the mounting portion 41, and a plurality of filter holes 51 are provided in parallel on the end surface of the filter element 13 close to the valve core 6. The second filter hole 131 is inclined downward, and the filter element 13 can be made of stainless steel. It is mainly used to separate the steam from water vapor for the second time. The outer wall of the mounting portion 41 is screwed with a joint 14 for pressing the filter element 13, and a first sealing ring 15 is provided between the two. An air outlet channel 141 is provided in the joint 14. The lowest point of the air outlet channel 141 is higher than any position of the second filter hole 131 set at the lowest point. The liquid after water vapor separation can flow to the exhaust channel 61 through the second filter hole 131 inclined downward and then flow back into the valve body 3, which can prevent the liquid from seeping out from the end of the joint 14.

Further, as shown in Figures 1 to 3, a rotary seal assembly 7 is provided at the end of the valve core 6 in the valve cover 4 in this embodiment, and the rotary seal assembly 7 includes a plug 8, a rotating member 9, a connecting member 10, and a primary spring 11, and the valve core 6 is provided with a shielding portion 62 at one end close to the plug 8, and an exhaust port 621 is provided below the shielding portion 62, and the diameter of the exhaust port 621 is smaller than the inner radius of the valve core 6; the rotating axis of the plug 8 and the central axis of the valve core 6 are in the same straight line, and the diameter of the contact surface with the shielding portion 62 is between the diameter of the exhaust port 621 and the outer radius of the end of the valve core 6 close to the plug 8; at the same time, one end of the rotating member 9 is connected to the connecting member 10, and the rotating axis of the plug 8 is connected to the connecting member 11. The rotating member 9 and the connecting member 10 are rotatably connected, that is, the contact ends of the rotating member 9 and the connecting member 10 are respectively provided with matching annular protrusions 91 and annular grooves 101, the other end of the rotating member 9 extends into the filter cartridge 5 and is detachably fixedly connected to the plug 8, and the outer wall surface of the rotating member 9 fits the inner wall surface of the filter cartridge 5, which can prevent steam from entering between the outer wall surface of the rotating member 9 and the inner wall surface of the filter cartridge 5 to a certain extent; at the same time, one end of the primary spring 11 is fixedly connected to the inner wall of the valve cover 4, and the other end is fixedly connected to the connecting member 10 and simultaneously drives the plug 8 to press against the end face of the valve core 6, that is, the primary spring 11 is used to press the plug 8 against the end face of the shielding portion 62, thereby improving the sealing performance of the exhaust valve.

Further, as shown in Figures 1 and 4, the valve body 3 in this embodiment is provided with a float 12 which can rise or fall with the liquid level and whose upper end is rotatably connected to the rotating member 9. Specifically, the rotating member 9 is provided with a gear member 16 at the central axis of the float 12 corresponding to the central axis of the float 12, and a connecting portion 121 is provided at the upper end of the float 12. The corresponding connecting portion 121 has a semicircular upper end that fits the outer diameter of the gear member 16. At the same time, a plurality of racks 1211 used to cooperate with the gear member 16 are provided on one side of the connecting portion 121, and sliders 1 are symmetrically provided on the outer wall of the float 12, and a slide rail 2 is correspondingly provided on the inner wall of the valve body 3. The slider 1 and the slide rail 2 cooperate to ensure the stability of the vertical movement of the float 12. At the same time, there is a gap between the float 12 and the valve body 3 in other directions for the circulation of steam and liquid. In the initial state, due to the action of its own gravity and the cooperation of the connecting portion 121 and the gear member 16, the float 12 is located at the lowest point in height and the valve The exhaust channel 61 of the core 6 is at the maximum opening. When liquid flows in from the liquid inlet 191, the liquid level in the valve body 3 gradually rises, and the contact area between the float 12 and the liquid gradually increases, so that the buoyancy of the float 12 is greater than its own gravity. The float 12 moves vertically upward and drives the rotating member 9 and the plug 8 to rotate. When the connecting portion 121 reaches the inner wall of the valve cover 4, the plug 8 just blocks the exhaust port 621, and the exhaust valve is in a sealed state. When steam accumulates in the exhaust valve, the liquid level in the valve body 3 drops, the float 12 moves vertically downward, and the plug 8 rotates a certain angle, so that there is a certain gap between the float 12 and the exhaust port 621. The gas in the valve body 3 is discharged from the gap, and the liquid level returns to its original state. The plug 8 rotates back to the state of just blocking the exhaust port 621. The plug 8 can be driven to rotate by the vertical movement of the float 12, and the valve core 6 can be controlled to switch between the exhaust and sealing states at the same time.

The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims (10)

1. An exhaust valve with filtering capability, its characterized in that: including valve body (3) and valve gap (4) that can dismantle sealing connection, valve body (3) lower extreme is equipped with intercommunicating pore (31), be equipped with on the inner wall of valve gap (4) and strain a section of thick bamboo (5), correspond on the outer wall and be equipped with installation department (41), be equipped with a plurality of first filtration pore (51) on the lateral wall of straining a section of thick bamboo (5), install one in installation department (41) and stretch to case (5) in case (6), be equipped with exhaust passage (61) in case (6), the tip that corresponds case (6) in valve gap (4) is equipped with rotary seal subassembly (7), rotary seal subassembly (7) include end cap (8), rotating member (9), connecting piece (10), one end spring (11), rotating member (9) one end and connecting piece (10) rotate to be connected, the other end stretch to straining a section of thick bamboo (5) in and with end cap (8) can dismantle fixed connection, one end spring (11) one end and inner wall rigid coupling, the other end and connecting piece (10) rigid coupling and drive end cap (8) to liquid level (6) terminal surface simultaneously, be equipped with in valve cap (3) corresponding case (6) end and can drive the end cap (12) through the vertical direction of rotation that can be moved up and down with float (12) in the end that can be equipped with in the rotating member (12) through the end that can be moved up-down with float (12) And simultaneously controls the valve core (6) to switch between an exhaust state and a sealing state.

2. An exhaust valve with filtering function according to claim 1, characterized in that: the filter is characterized in that a filter element (13) is arranged in the mounting part (41), a plurality of second filter holes (131) which are inclined downwards are formed in the end face, close to one side of the valve core (6), of the filter element (13) in parallel, a connector (14) for compressing the filter element (13) is screwed on the outer wall surface of the mounting part (41), a first sealing ring (15) is arranged between the connector and the connector, and an air outlet channel (141) is formed in the connector (14).

3. An exhaust valve with filtering function according to claim 2, characterized in that: the lowest point of the air outlet channel (141) is higher than any position of the second filter holes (131) arranged at the lowest point.

4. An exhaust valve with filtering function according to claim 1, characterized in that: the rotary part (9) is sleeved with a gear part (16) corresponding to the central axis of the floater (12), the upper end of the floater (12) is provided with a connecting part (121), one side of the connecting part (121) is provided with a plurality of racks (1211) matched with the gear part (16), the outer wall of the floater (12) is symmetrically provided with a sliding block (1), and the inner wall of the valve body (3) is correspondingly provided with a sliding rail (2).

5. An exhaust valve with filtering function according to claim 1 or 4, characterized in that: the contact ends of the rotating piece (9) and the connecting piece (10) are respectively provided with an annular bulge (91) and an annular groove (101) which are matched with each other.

6. An exhaust valve with filtering function according to claim 1, characterized in that: a shielding part (62) is arranged at one end, close to the plug (8), of the valve core (6), an exhaust port (621) is arranged below the shielding part (62), and the diameter of the exhaust port (621) is smaller than the inner radius of the valve core (6); the rotating shaft of the plug (8) and the central axis of the valve core (6) are in the same straight line, and the diameter of the contact surface with the shielding part (62) is between the diameter of the exhaust port (621) and the outer radius of one end, close to the plug (8), of the valve core (6).

7. An exhaust valve with filtering function according to claim 1, characterized in that: the valve is characterized in that the lower end of the valve body (3) is in threaded connection with a block valve body (17), a second sealing ring (18) is arranged between the block valve body and the valve body, a block valve core (19) is movably connected in the block valve body (17), and a plurality of liquid inlets (191) are uniformly formed in the side wall of the block valve core (19).

8. An exhaust valve with filtering function according to claim 7, characterized in that: a secondary spring (20) is arranged between the isolating valve body (17) and the isolating valve core (19).

9. An exhaust valve with filtering function according to claim 7 or 8, characterized in that: a filter screen (21) is further arranged in the isolating valve core (19).

10. An exhaust valve with filtering function according to claim 1, characterized in that: a conical sealing gasket (22) is arranged between the valve body (3) and the valve cover (4), and a third sealing ring (23) is arranged between the valve cover (4) and the valve core (6).