Sterile half-ball valve

Abstract

The utility model relates to a sterile hemisphere valve which comprises a valve body, an eccentric hemisphere is arranged in the valve body, the left side of the eccentric hemisphere is connected with a valve rod, the valve rod is connected to the valve body in a rotating mode, a valve seat assembly used for forming sealing with the upper side of the eccentric hemisphere is arranged in the valve body, and the right side of the eccentric hemisphere is connected with a positioning shaft in a rotating mode. The positioning shaft is fixedly connected to the valve body, the positioning shaft is in threaded connection with an emptying pipe penetrating out of the valve body, the positioning shaft is provided with an L-shaped flow channel communicated with the emptying pipe, an emptying notch is formed in the upper side of the eccentric hemisphere, an inclined flow channel communicated with the L-shaped flow channel is formed in the position, on the lower side of the emptying notch, of the eccentric hemisphere, and the inclined flow channel is communicated with the L-shaped flow channel. The eccentric hemisphere is provided with a filter screen on the emptying notch, the upper side of the valve body is provided with an air blowing mechanism facing the upper side of the eccentric hemisphere, the liquid accumulated at the bottom of the tank body can be emptied, and solid materials remained at the bottom of the tank body can be blown and dried.

Description

Technical Field

[0001] The utility model relates to the technical field of valve bodies, in particular to an aseptic hemispherical valve. Background Art

[0002] In the pharmaceutical, food processing, and other industries requiring aseptic conditions, a single cone or tank in a sterile environment is often fitted with a valve at the bottom of the tank to facilitate discharging. An aseptic hemispherical valve is an example of a valve installed at the bottom of the tank for discharging.

[0003] In some tanks that contain both liquid and solid materials, if one wants to drain only the liquid without any residual liquid, and also be able to blow and dry the solid materials remaining in the tank to meet the process requirements, most of the existing aseptic hemispherical valves are difficult to achieve. In response to the above technical problems, the present application improves the aseptic hemispherical valve so that it can drain the liquid accumulated at the bottom of the tank, and also be able to blow and dry the solid materials remaining at the bottom of the tank. Utility Model Content

[0004] The utility model provides a sterile hemispherical valve which can drain the liquid accumulated at the bottom of the tank and can also purge and dry the solid materials retained at the bottom of the tank, thus solving the above problems existing in the use process of the prior art.

[0005] The technical solution of the utility model is achieved as follows: an aseptic hemispheric valve comprises a valve body, an eccentric hemisphere is provided in the valve body, a valve stem is connected to the left side of the eccentric hemisphere, the valve stem is rotatably connected to the valve body, a valve seat assembly is provided in the valve body for forming a seal with the upper position of the eccentric hemisphere, a positioning shaft is rotatably connected to the right side of the eccentric hemisphere, the positioning shaft is fixedly connected to the valve body, a drain pipe that penetrates the valve body is threadedly connected on the positioning shaft, an L-shaped flow channel communicating with the drain pipe is provided on the positioning shaft, an emptying notch is provided on the upper side of the eccentric hemisphere, an inclined flow channel for communicating with the L-shaped flow channel is provided on the lower side of the emptying notch on the eccentric hemisphere, a filter is provided on the emptying notch, and a blowing mechanism for blowing toward the upper side of the eccentric hemisphere is provided on the upper side of the valve body.

[0006] Preferably, the blowing mechanism includes an air receiving seat, which is fixedly connected to the upper side of the valve body, and an annular groove is provided on the upper side of the air receiving seat. A blowing pipe is threadedly connected to the outer side of the air receiving seat, and an air channel is provided on the air receiving seat to connect to the blowing pipe and penetrate into the annular groove. The air receiving seat is provided with a blowing port that penetrates into the air receiving seat in the annular groove.

[0007] Preferably, a plurality of the blowing ports are circumferentially provided on the air receiving seat, and the blowing ports are inclined toward the eccentric hemisphere.

[0008] Preferably, an actuator is fixedly connected to the valve body, and the actuator is connected to the valve stem to drive the valve stem to rotate.

[0009] Preferably, an annular pressure cover is provided on the upper side of the filter screen, and the annular pressure cover presses the edge of the filter screen onto the eccentric hemisphere, and the annular pressure cover and the eccentric hemisphere are fixedly connected by a screw.

[0010] Preferably, the valve seat assembly is located between the valve body and the air receiving seat, and the valve seat assembly includes a fixed ventilation ring and an inflatable expansion sealing valve seat, the inflatable expansion sealing valve seat faces the eccentric hemisphere, the valve body is connected to an inflation tube, the valve body is provided with a first air inlet passage connected to the inflation tube, the air receiving seat is provided with a second air inlet passage connected to the first air inlet passage, and the fixed ventilation ring is provided with an inflation passage leading to the space between the fixed ventilation ring and the inflatable expansion sealing valve seat.

[0011] Preferably, a slot is provided in the inflation sealing valve seat, the fixed ventilation ring is loosely fitted in the slot, and the inflation passage leads into the slot.

[0012] In summary, the beneficial effects of the present invention are:

[0013] 1. The utility model drains the accumulated liquid at the bottom of the tank body by arranging an emptying notch, an oblique flow channel, an L-shaped flow channel and an emptying pipe, and the arrangement of the filter can prevent the solid materials in the tank body from being discharged and prevent the solid materials in the tank body from blocking the oblique flow channel, the L-shaped flow channel or the emptying pipe, thereby facilitating the emptying of the accumulated liquid at the bottom of the tank body. After the accumulated liquid is emptied, air can be blown toward the upper side of the eccentric hemisphere through the blowing mechanism. Specifically, clean gas is connected to the blowing pipe, so that the gas passes through the blowing pipe, the air channel and the annular groove, and finally blows the solid materials remaining on the upper side of the eccentric hemisphere through the blowing port, thereby achieving the purpose of blowing and drying the undried solid materials at the bottom of the tank body.

[0014] 2. The setting of the inflatable sealing valve seat can be inflated when the eccentric hemisphere needs to be sealed, thereby forming a tight seal with the eccentric hemisphere. When the eccentric hemisphere needs to be rotated, the inflatable sealing valve seat can be deflated in advance, thereby effectively reducing the wear of the sealing valve seat and reducing the risk of contamination. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 for Figure 1 Schematic diagram of the structure when observed from another angle;

[0018] Figure 3 It is a top view of the utility model;

[0019] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure along the AA direction;

[0020] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure along the BB direction.

[0021] In the figure: 10, valve body; 11, first air inlet; 20, eccentric hemisphere; 21, emptying notch; 22, oblique flow channel; 31, valve stem; 32, actuator; 40, positioning shaft; 41, L-shaped flow channel; 50, emptying pipe; 61, filter screen; 62, annular gland; 71, air receiving seat; 711, second air inlet; 712, annular groove; 713, air channel; 714, air port; 72, air pipe; 81, fixed ventilation ring; 811, inflation channel; 82, inflation sealing valve seat; 821, slot; 83, inflation pipe. DETAILED DESCRIPTION

[0022] The following is a combination of the appended examples of the present invention Figure 1-5 , clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0023] Example:

[0024] like Figures 1 to 5As shown, the utility model discloses an aseptic hemispherical valve, including a valve body 10, an eccentric hemisphere 20 is provided in the valve body 10, a valve stem 31 is connected to the left side of the eccentric hemisphere 20, the valve stem 31 is rotatably connected to the valve body 10, an actuator 32 is fixedly connected to the valve body 10, the actuator 32 is connected to the valve stem 31 for driving the valve stem 31 to rotate, the actuator 32 is a prior art, and will not be described in detail here. In the valve body 10 of the utility model, a valve seat assembly for forming a seal with the upper side of the eccentric hemisphere 20 is provided, and in addition, a valve seat assembly for forming a seal with the upper side of the eccentric hemisphere 20 is rotatably connected to the right side of the eccentric hemisphere 20. There is a positioning shaft 40, which is fixedly connected to the valve body 10, wherein an emptying pipe 50 that penetrates the valve body 10 is threadedly connected to the positioning shaft 40, and an L-shaped flow channel 41 that communicates with the emptying pipe 50 is provided on the positioning shaft 40, and an emptying slot 21 is provided on the upper side of the eccentric hemisphere 20, and an inclined flow channel 22 for communicating with the L-shaped flow channel 41 is provided on the lower side of the emptying slot 21 on the eccentric hemisphere 20, and a filter screen 61 is provided on the emptying slot 21 of the eccentric hemisphere 20. In addition, in the utility model, a blowing mechanism toward the upper side of the eccentric hemisphere 20 is provided on the upper side of the valve body 10.

[0025] During use, the end of the drain pipe 50 located outside the valve body 10 can be connected to a faucet, a plug, a solenoid valve, etc., and is only opened when emptying is needed. When emptying, the accumulated liquid at the bottom of the tank body can be discharged through the drain slot 21, the inclined flow channel 22, the L-shaped flow channel 41 and the drain pipe 50, thereby realizing the emptying of the accumulated liquid at the bottom of the tank body, and the solid material in the tank body will be intercepted by the filter screen 61. The drain slot 21 cooperates with the setting of the filter screen 61 to prevent the solid material from clogging and accumulating above the inclined flow channel 22 and blocking it.

[0026] In the present utility model, the blowing mechanism specifically includes an air receiving seat 71, which is fixedly connected to the upper side of the valve body 10, and an annular groove 712 is provided on the upper side of the air receiving seat 71, and an air pipe 72 is threadedly connected to the outer side of the air receiving seat 71, and an air channel 713 is provided on the air receiving seat 71 to connect the air blowing pipe 72 and penetrate into the annular groove 712, and the air receiving seat 71 is provided with a blowing port 714 that penetrates into the air receiving seat 71 in the annular groove 712. Furthermore, six blowing ports 714 are circumferentially provided on the air receiving seat 71, and the blowing ports 714 are inclined toward the eccentric hemisphere 20.

[0027] The air blowing pipe 72 is used to connect with the solenoid valve and the air pump. After the accumulated liquid at the bottom of the tank is drained, the solenoid valve is opened and the air pump blows clean gas into the air blowing pipe 72. The clean gas passes through the air blowing pipe 72, the air channel 713 and the annular groove 712, and finally blows on the solid material remaining on the upper side of the eccentric hemisphere 20 through the air blowing port 714, thereby achieving the purpose of blowing and drying the undried solid material at the bottom of the tank.

[0028] The specific structure of the filter screen 61 installed on the emptying slot 21 is as follows: an annular pressure cover 62 is provided on the upper side of the filter screen 61, and the annular pressure cover 62 presses the edge of the filter screen 61 onto the eccentric hemisphere 20. The annular pressure cover 62 and the eccentric hemisphere 20 are fixedly connected by a screw. This structure is conducive to the disassembly of the filter screen 61, thereby facilitating maintenance and cleaning.

[0029] In the present invention, the valve seat assembly is located between the valve body 10 and the air receiving seat 71. The valve seat assembly specifically includes a fixed ventilation ring 81 and an inflatable sealing valve seat 82. The inflatable sealing valve seat 82 faces the eccentric hemisphere 20. Figure 5 As shown, an inflation pipe 83 is connected to the valve body 10, and a first air inlet 11 connected to the inflation pipe 83 is provided on the valve body 10, and a second air inlet 711 connected to the first air inlet 11 is provided on the air receiving seat 71, and an inflation passage 811 leading to the fixed air ring 81 and the inflation sealing valve seat 82 is provided on the fixed air ring 81. When in use, the inflation pipe 83 can be connected to the air pump and the solenoid valve. When the eccentric hemisphere needs to be sealed, the solenoid valve is opened, and the air pump inputs gas into the inflation pipe 83. The gas passes through the inflation pipe 83, the first air inlet 11, and the second air inlet 71. 1 and the inflation channel 811 reach between the fixed ventilation ring 81 and the inflation expansion sealing valve seat 82, the gas acts on the inflation expansion sealing valve seat 82, causing it to expand and form a tight seal with the eccentric hemisphere, at this time the solenoid valve is closed, so that the inflation expansion sealing valve seat 82 remains in this state, and when the eccentric hemisphere 20 needs to be rotated, the solenoid valve is opened to deflate the inflation expansion sealing valve seat 82 in advance, and then the eccentric hemisphere 20 is rotated, thereby effectively reducing the wear of the sealing valve seat and reducing the risk of contamination. It should be noted that the inflation tube 83 can also be manually inflated, and the inflation tube 83 can be sealed after inflating.

[0030] The specific matching structure of the fixed ventilation ring 81 and the inflation expansion sealing valve seat 82 is: a groove 821 is opened in the inflation expansion sealing valve seat 82, and the fixed ventilation ring 81 is loosely fitted in the groove 821, and the inflation channel 811 passes into the groove 821. This structure enables the inflation expansion sealing valve seat 82 to be reliably matched and set on the fixed ventilation ring 81, and can effectively prevent gas leakage between the fixed ventilation ring 81 and the inflation expansion sealing valve seat 82.

[0031] It should also be pointed out that the terms indicated in the present invention, such as: "front", "rear", "vertical", "horizontal", etc., indicating the orientation or position relationship are 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 do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention.

[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An aseptic hemispherical valve, comprising a valve body, an eccentric hemispherical body disposed therein, a valve stem connected to the left side of the eccentric hemispherical body, the valve stem being rotatably connected to the valve body, and a valve seat assembly disposed within the valve body for forming a seal with the upper side of the eccentric hemispherical body, characterized in that: The right side of the eccentric hemisphere is rotatably connected to a positioning shaft, which is fixedly connected to the valve body. A drain pipe that penetrates the valve body is threadedly connected to the positioning shaft. An L-shaped flow channel communicating with the drain pipe is provided on the positioning shaft. An emptying slot is provided on the upper side of the eccentric hemisphere. An inclined flow channel for communicating with the L-shaped flow channel is provided on the lower side of the emptying slot on the eccentric hemisphere. A filter is provided on the emptying slot of the eccentric hemisphere, and a blowing mechanism toward the upper side of the eccentric hemisphere is provided on the upper side of the valve body.

2. The aseptic hemispherical valve according to claim 1, characterized in that: The blowing mechanism includes an air receiving seat, which is fixedly connected to the upper side of the valve body. An annular groove is provided on the upper side of the air receiving seat. An air blowing pipe is threadedly connected to the outer side of the air receiving seat. An air channel is provided on the air receiving seat to connect to the air blowing pipe and penetrate into the annular groove. The air receiving seat is provided with an air blowing port that penetrates into the air receiving seat in the annular groove.

3. The aseptic hemispherical valve according to claim 2, characterized in that: A plurality of air blowing ports are circumferentially provided on the air receiving seat, and the air blowing ports are inclined toward the eccentric hemisphere.

4. The aseptic hemispherical valve according to claim 1, characterized in that: An actuator is fixedly connected to the valve body, and the actuator is connected to the valve stem for driving the valve stem to rotate.

5. The aseptic hemispherical valve according to claim 1, characterized in that: An annular pressure cover is provided on the upper side of the filter screen, and the annular pressure cover presses the edge of the filter screen onto the eccentric hemisphere. The annular pressure cover and the eccentric hemisphere are fixedly connected by a screw.

6. The aseptic hemispherical valve according to claim 2, characterized in that: The valve seat assembly is located between the valve body and the air receiving seat, and the valve seat assembly includes a fixed ventilation ring and an inflatable expansion sealing valve seat. The inflatable expansion sealing valve seat faces the eccentric hemisphere. The valve body is connected to an inflation pipe. The valve body is provided with a first air inlet passage connected to the inflation pipe. The air receiving seat is provided with a second air inlet passage connected to the first air inlet passage. The fixed ventilation ring is provided with an inflation passage leading to the fixed ventilation ring and the inflatable expansion sealing valve seat.

7. The aseptic hemispherical valve according to claim 6, characterized in that: A clamping groove is provided in the inflation sealing valve seat, the fixed ventilation ring is loosely fitted in the clamping groove, and the inflation passage leads into the clamping groove.

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