Anti-mixing tank bottom valve

Abstract

The utility model provides an anti-mixing tank bottom valve which comprises a valve body, an upper valve element and a lower valve element, a sealing face is arranged in the valve body, and the upper valve element is installed in the valve body and can do linear motion so as to be matched with the sealing face to seal or open a tank bottom. A movable space is arranged between the upper valve element and the lower valve element, a channel is formed in the lower valve element, and the lower valve element is installed in the valve body and can do linear motion so as to be matched with the sealing face, communicate with the pipeline and the channel or be matched with the upper valve element, isolate the pipeline and the channel and communicate the tank bottom and the pipeline, and the channel is communicated with the movable space. The valve body is provided with a drain outlet, and the channel is communicated with the drain outlet. By means of the design, the functions of opening and closing, leakage detecting, pipeline waste water discharging, tank waste water discharging and the like can be achieved through the tank bottom valve, multiple purposes are achieved through one valve, the pipeline structure can be simpler and more convenient, and overall equipment installation is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of valves, in particular to an anti-mixing tank bottom valve. Background Art

[0002] Tank bottom valves are used in the discharge process of reaction vessels in the pharmaceutical, biological, fine chemical, food and other industries to connect the tank bottom and pipeline of the reaction vessel. Currently, the existing tank bottom valves on the market have a single function and can only achieve simple opening and closing functions. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a mix-proof tank bottom valve, comprising a valve body, an upper valve core and a lower valve core. A sealing surface is arranged in the valve body, the upper valve core is installed in the valve body and is arranged to be able to make linear motion to cooperate with the sealing surface to close or open the tank bottom; an active space is arranged between the upper valve core and the lower valve core, a channel is arranged on the lower valve core, the lower valve core is installed in the valve body and is arranged to be able to make linear motion to cooperate with the sealing surface to connect or cut off the pipeline and the channel, or to cooperate with the upper valve core to cut off the pipeline and the channel and connect the tank bottom and the pipeline, the channel is connected to the active space, a sewage outlet is arranged on the valve body, and the channel is connected to the sewage outlet.

[0004] Preferably, an upper pull rod is connected to the upper valve core, and the upper pull rod extends downward from the valve body from the channel.

[0005] Preferably, the lower valve core is tubular, and comprises a sealing portion and a connecting portion which protrude radially outward, the connecting portion extends downward from the valve body, and the channel runs through the sealing portion and the connecting portion.

[0006] Preferably, the upper pull rod includes a valve interior and a valve exterior, the valve interior is connected to the upper valve core, and the valve exterior is connected to the valve interior.

[0007] Preferably, the bottom of the sealing surface extends radially outward to form a first inclined surface, the top of the sealing portion is provided with a second inclined surface matching the first inclined surface, and an inclined sealing ring is provided on the first inclined surface or the second inclined surface.

[0008] Preferably, the valve body includes a pipeline portion and a bracket, the bottom of the pipeline portion is provided with an installation port for the lower valve core to enter, the bracket is tubular, a first sealing structure is provided between the outer wall of the bracket and the pipeline portion, and a second sealing structure is provided between the inner wall of the bracket and the connecting portion.

[0009] Preferably, the first sealing structure includes a first sealing ring and a clamp, a circular connecting port is provided at the bottom of the pipeline portion, a connecting skirt inclined outward is provided at the bottom of the connecting port, the bracket is tubular, a protrusion cooperating with the connecting skirt is provided on the outer wall of the bracket, the clamp is sleeved on the connecting skirt and the protrusion, a first sealing groove is provided on the upper part of the protrusion, and the first sealing ring is arranged in the first sealing groove.

[0010] Preferably, the second sealing structure includes a second sealing ring, a sliding sleeve and a third sealing ring. An installation groove is provided on the inner wall of the bracket, a sliding groove connected to the installation groove is provided below the installation groove, a clamping groove is provided on the side wall of the installation groove, a clamping block is provided on the second sealing ring, the second sealing ring is installed in the installation groove and the clamping block is clamped in the clamping groove, the sliding sleeve is installed in the sliding groove, a third sealing groove is provided below the sliding groove, and the third sealing ring is installed in the third sealing groove.

[0011] Preferably, a sewage discharge pipe is connected to the sewage discharge port, and the sewage discharge pipe is threadedly connected to the sewage discharge port.

[0012] The beneficial effect of the utility model is that during operation, the upper valve core and the lower valve core are controlled to perform different actions through a controller with multiple strokes or multiple controllers.

[0013] When the lower valve core is pulled alone, the lower valve core opens to connect the pipeline and the channel. At this time, water can be injected into the pipeline to clean the pipeline, and the sewage generated by cleaning is discharged from the sewage outlet.

[0014] When both the upper valve core and the lower valve core are closed, the drain port can be used to observe whether there is leakage at the bottom of the tank.

[0015] After the upper valve core is pushed upward into the tank bottom, the tank bottom is connected with the channel and the sewage outlet, which can be used to discharge the waste water in the tank body.

[0016] After pulling both the upper valve core and the lower valve core downward, the upper valve core and the lower valve core are abutted against each other to seal the channel, thereby realizing the function of opening and closing the tank bottom normally.

[0017] Through the above design, the tank bottom valve can be used to realize functions such as opening and closing, leak detection, discharge of pipeline wastewater, and discharge of wastewater in the tank, so that one valve can be used for multiple purposes, which can make the structure of the pipeline simpler and the overall installation of the equipment more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of the upper valve core and the lower valve core in the closed state;

[0019] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0020] Figure 3 for Figure 1 The enlarged view of point B in the middle;

[0021] Figure 4 This is a schematic diagram of the lower valve core being opened alone;

[0022] Figure 5 This is a structural diagram of the upper valve core and the lower valve core being opened;

[0023] Figure 6 This is a structural diagram of the upper valve core opening upward. DETAILED DESCRIPTION

[0024] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0025] See also Figure 1-Figure 6 The utility model provides a mixing proof tank bottom valve, comprising a valve body 1, an upper valve core 2 and a lower valve core 3. A sealing surface 11 is arranged in the valve body 1. The upper valve core 2 is installed in the valve body 1 and is arranged to be able to move linearly to cooperate with the sealing surface 11 to close or open the tank bottom; an activity space 4 is arranged between the upper valve core 2 and the lower valve core 3, a channel 5 is arranged on the lower valve core 3, the lower valve core 3 is installed in the valve body 1 and is arranged to be able to move linearly to cooperate with the sealing surface 11 to connect or cut off the pipeline and the channel 5, or cooperate with the upper valve core 2 to cut off the pipeline and the channel 5 and connect the tank bottom and the pipeline, the channel 5 is connected with the activity space 4, a sewage outlet is arranged on the valve body 1, and the channel 5 is connected with the sewage outlet.

[0026] During operation, the upper valve core 2 and the lower valve core 3 are controlled to perform different actions through a controller with multiple strokes or multiple controllers.

[0027] Reference Figure 4 When the lower valve core 3 is pulled alone, the lower valve core 3 is opened, connecting the pipeline with the channel 5. At this time, water can be injected into the pipeline to clean the pipeline, and the sewage generated by cleaning is discharged from the sewage outlet.

[0028] Reference Figure 1 When the upper valve core 2 and the lower valve core 3 are both closed, it is possible to observe whether there is leakage at the bottom of the tank through the drain port.

[0029] Reference Figure 6 After the upper valve core 2 is pushed upward into the tank bottom, the tank bottom is connected with the channel 5 and the sewage outlet, which can be used to discharge the waste water in the tank body.

[0030] Reference Figure 5 After the upper valve core 2 and the lower valve core 3 are pulled downward, the upper valve core 2 and the lower valve core 3 are abutted against each other, and the channel 5 can be sealed, thereby realizing the function of opening and closing the tank bottom normally.

[0031] Through the above design, the tank bottom valve can be used to realize functions such as opening and closing, leak detection, discharge of pipeline wastewater, and discharge of wastewater in the tank, so that one valve can be used for multiple purposes, which can make the structure of the pipeline simpler and the overall installation of the equipment more convenient.

[0032] Furthermore, an upper pull rod 13 is connected to the upper valve core 2 , and the upper pull rod 13 extends downward from the valve body 1 from the channel 5 .

[0033] Furthermore, the lower valve core 3 is tubular, and includes a sealing portion 31 and a connecting portion 32 protruding radially outward, the connecting portion 32 extends downward from the valve body 1 , and the channel 5 passes through the sealing portion 31 and the connecting portion 32 .

[0034] The upper valve core 2 is connected to the external actuator through the upper pull rod 13, and the lower valve core 3 is connected to the external actuator through the connecting part 32, so that the upper valve core 2 and the lower valve core 3 can complete the designed action. The lower valve core 3 is designed to be tubular, and the upper pull rod 13 passes through the upper valve core 2, so that the upper valve core 2 and the lower valve core 3 can be driven from the bottom, so that the actuator's force on the upper valve core 2 and the lower valve core 3 is more direct and more efficient.

[0035] Furthermore, the upper pull rod 13 includes a valve inner portion 131 and a valve outer portion 132 , the valve inner portion 131 is connected to the upper valve core 2 , and the valve outer portion 132 is connected to the valve inner portion 131 .

[0036] By dividing the upper pull rod 13 into a valve interior 131 and a valve exterior 132 , different materials can be used to manufacture the valve interior 131 and the valve exterior 132 . The valve interior 131 can be made of materials that meet the working conditions, and the valve exterior 132 can be made of materials with suitable performance, thereby saving costs.

[0037] Furthermore, the bottom of the sealing surface 11 extends radially outward to form a first inclined surface 16 , and the top of the sealing portion 31 is provided with a second inclined surface 17 matching the first inclined surface 16 , and an inclined sealing ring 18 is provided on the first inclined surface 16 or the second inclined surface 17 .

[0038] Through the cooperation of the first inclined surface 16 and the second inclined surface 17, when the lower valve core 3 is in the closed position, it is only necessary to squeeze the inclined sealing ring 18 to meet the sealing conditions. Compared with the traditional shaft hole sealing ring structure, the pressure on the inclined sealing ring 18 is small, and the inclined sealing ring 18 will not be pulled during the opening and closing process, thereby extending the service life of the inclined sealing ring 18 and reducing the maintenance frequency of the valve.

[0039] Furthermore, the valve body 1 includes a pipeline portion 14 and a bracket 15. The bottom of the pipeline portion 14 is provided with an installation port for the lower valve core 3 to enter. The bracket 15 is tubular. A first sealing structure is provided between the outer wall of the bracket 15 and the pipeline portion 14, and a second sealing structure is provided between the inner wall of the bracket 15 and the connecting portion 32.

[0040] Furthermore, the first sealing structure includes a first sealing ring 61 and a clamp 64, a circular connecting port 141 is provided at the bottom of the pipeline portion 14, a connecting skirt 142 inclined outward is provided at the bottom of the connecting port 141, the bracket 15 is tubular, and a protrusion 143 cooperating with the connecting skirt 142 is provided on the outer wall of the bracket 15, the clamp 64 is sleeved on the connecting skirt 142 and the protrusion 143, a first sealing groove is provided on the upper part of the protrusion 143, and the first sealing ring 61 is arranged in the first sealing groove.

[0041] Furthermore, the second sealing structure includes a second sealing ring 62, a sliding sleeve 65 and a third sealing ring 63. A mounting groove is provided on the inner wall of the bracket 15, a sliding groove connected to the mounting groove is provided below the mounting groove, a clamping groove is provided on the side wall of the mounting groove, a clamping block 66 is provided on the second sealing ring 62, the second sealing ring 62 is installed in the mounting groove and the clamping block 66 is clamped in the clamping groove, the sliding sleeve 65 is installed in the sliding groove, a third sealing groove is provided below the sliding groove, and the third sealing ring 63 is installed in the third sealing groove.

[0042] The first sealing structure and the second sealing structure seal the connection part 32, the bracket 15 and the pipeline part 14 to prevent leakage of the medium in the pipeline. The tubular design of the connection port 141 and the bracket 15 allows the lower valve core 3 to be first installed into the pipeline part 14 from the connection port 141 during installation, and then the bracket 15 is installed between the connection port 141 and the connection part 32, thereby facilitating the installation of the lower valve core 3.

[0043] Furthermore, a sewage discharge pipe is connected to the sewage discharge port, and the sewage discharge pipe is threadedly connected to the sewage discharge port. The split design of the sewage discharge pipe makes the structure of the bracket 15 uniform during molding, facilitates molding, and reduces the manufacturing cost of the bracket 15.

[0044] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A mix-proof tank bottom valve, characterized in that: The invention comprises a valve body (1), an upper valve core (2) and a lower valve core (3); the valve body (1) is provided with a sealing surface (11); the upper valve core (2) is mounted in the valve body (1) and is arranged to be capable of linear motion so as to cooperate with the sealing surface (11) to close or open the tank bottom; an activity space (4) is arranged between the upper valve core (2) and the lower valve core (3); a channel (5) is arranged on the lower valve core (3); the lower valve core (3) is mounted in the valve body (1) and is arranged to be capable of linear motion so as to cooperate with the sealing surface (11) to connect or disconnect a pipeline and the channel (5), or to cooperate with the upper valve core (2) to disconnect the pipeline and the channel (5) and connect the tank bottom and the pipeline; the channel (5) is connected to the activity space (4); a sewage outlet (12) is arranged on the valve body (1); the channel (5) is connected to the sewage outlet (12).

2. The anti-mix tank bottom valve according to claim 1, characterized in that: An upper pull rod (13) is connected to the upper valve core (2), and the upper pull rod (13) extends downward from the channel (5) out of the valve body (1).

3. The anti-mix tank bottom valve according to claim 2, characterized in that: The lower valve core (3) is tubular, and comprises a sealing portion (31) and a connecting portion (32) protruding radially outward, the connecting portion (32) extending downward from the valve body (1), and the channel (5) passes through the sealing portion (31) and the connecting portion (32).

4. The anti-mix tank bottom valve according to claim 2, characterized in that: The upper pull rod (13) comprises a valve interior (131) and a valve exterior (132), the valve interior (131) being connected to the upper valve core (2), and the valve exterior (132) being connected to the valve interior (131).

5. The anti-mix tank bottom valve according to claim 3, characterized in that: The bottom of the sealing surface (11) extends radially outward to form a first inclined surface (16), the top of the sealing portion (31) is provided with a second inclined surface (17) matching the first inclined surface (16), and an inclined sealing ring (18) is provided on the first inclined surface (16) or the second inclined surface (17).

6. The anti-mix tank bottom valve according to claim 3, characterized in that: The valve body (1) comprises a pipeline portion (14) and a bracket (15); a mounting opening for the lower valve core (3) to enter is provided at the bottom of the pipeline portion (14); the bracket (15) is tubular; a first sealing structure is provided between the outer wall of the bracket (15) and the pipeline portion (14); and a second sealing structure is provided between the inner wall of the bracket (15) and the connecting portion (32).

7. The anti-mix tank bottom valve according to claim 6, characterized in that: The first sealing structure comprises a first sealing ring (61) and a clamp (64); a circular connecting opening (141) is provided at the bottom of the pipe portion (14); a connecting skirt (142) inclined outward is provided at the bottom of the connecting opening (141); a convex block (143) cooperating with the connecting skirt (142) is provided on the outer wall of the bracket (15); the clamp (64) is sleeved on the connecting skirt (142) and the convex block (143); a first sealing groove is provided on the upper part of the convex block (143); and the first sealing ring (61) is arranged in the first sealing groove.

8. The anti-mix tank bottom valve according to claim 6, characterized in that: The second sealing structure comprises a second sealing ring (62), a sliding sleeve (65) and a third sealing ring (63); a mounting groove is provided on the inner wall of the bracket (15); a sliding groove connected to the mounting groove is provided below the mounting groove; a clamping groove is provided on the side wall of the mounting groove; a clamping block (66) is provided on the second sealing ring (62); the second sealing ring (62) is installed in the mounting groove and the clamping block (66) is clamped in the clamping groove; the sliding sleeve (65) is installed in the sliding groove; a third sealing groove is provided below the sliding groove; and the third sealing ring (63) is installed in the third sealing groove.

9. The anti-mix tank bottom valve according to claim 1, characterized in that: The sewage outlet (12) is connected to a sewage pipe, and the sewage pipe is threadedly connected to the sewage outlet (12).

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