Tank bottom diaphragm valve with sterilization function

Abstract

The tank bottom diaphragm valve with the sterilization function comprises a valve body lower body, an inner-layer diaphragm pad, an outer-layer diaphragm pad, a valve clack, a valve rod, a valve body upper body and a valve deck, a fluid channel is formed in the valve body lower body, and the inner-layer diaphragm pad is arranged above the fluid channel. Through cooperative arrangement of the outer-layer diaphragm pad, the storage cavity, the stop block, the release opening, the sealing piece, the shape memory alloy piece and the spring, a fluid can be further sterilized in a chemical sterilization mode, and in a normal state, a chemical sterilizing agent is kept in a sealed state all the time, so that leakage is avoided; the shape memory alloy piece is controlled by an electric signal to deform after being heated to release the spring, and the sealing piece is opened by utilizing thrust, so that a chemical sterilizing agent stored in the storage cavity is diffused into the lower body of the valve body through the release opening, penetrates through the inner-layer diaphragm pad, disinfects the lower surface of the inner-layer diaphragm pad and is fully mixed with fluid; and microorganisms in the fluid are killed.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and mainly relates to a tank bottom diaphragm valve with a sterilization function. Background Art

[0002] In the production process of pharmaceutical, food, bioengineering and other industries, the tank bottom diaphragm valve is a key component used to control the inflow and outflow of materials at the bottom of the tank.

[0003] Traditional tank bottom diaphragm valves mainly realize the opening and closing control function of materials. However, in actual production, due to the special nature of the materials and the strict requirements of the production process, residual materials are likely to remain inside the valve, breeding bacteria. If effective sterilization is not carried out in time, it will have a serious impact on the quality of subsequent products and even cause product failure, resulting in huge economic losses. Currently, some companies use manual disassembly, cleaning, and sterilization to process tank bottom diaphragm valves. However, this method is not only inefficient and increases labor costs, but it can also easily damage the valves during disassembly and installation, affecting the valve's sealing performance and service life. Some companies also use external sterilization equipment to sterilize valves. However, the connection between these external equipment and the valves is complex, resulting in uneven sterilization effects, making it difficult to ensure that every corner of the valve is fully sterilized, and thus failing to meet high standards of production hygiene. Therefore, developing a tank bottom diaphragm valve that can achieve efficient sterilization without affecting the normal use and performance of the valve is of great practical significance. Summary of the Invention

[0004] The present invention provides a tank bottom diaphragm valve with a sterilization function, which is used to solve the technical problems raised in the above background technology.

[0005] In order to achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a tank bottom diaphragm valve with a sterilization function, comprising a valve lower body, an inner diaphragm pad, an outer diaphragm pad, a valve disc, a valve stem, a valve upper body and a valve cover, a fluid channel is provided inside the valve lower body, the inner diaphragm pad is provided above the fluid channel, the outer diaphragm pad is located above the inner diaphragm pad, there is a gap between the outer diaphragm pad and the inner diaphragm pad, a sterilization component is provided inside the outer diaphragm pad, the bottom end of the valve disc is connected to the outer diaphragm pad, the top end of the valve disc is connected to the valve stem, the valve stem vertically passes through the interior of the valve upper body, and the top end of the valve stem is connected to the valve cover.

[0006] Preferably, a fixing plate is provided above the outer diaphragm pad, and the inner diaphragm pad, the outer diaphragm pad and the fixing plate are fixedly connected to the lower body of the valve body by bolts.

[0007] Preferably, a plurality of embedding grooves are provided on the bottom wall of the outer diaphragm pad, and ultraviolet lamp beads are installed inside the embedding grooves.

[0008] Preferably, a plurality of storage cavities are provided on the inner ring side wall of the outer diaphragm pad, a chemical sterilant is provided inside the storage cavity, a block is provided at the storage cavity port, and a plurality of release ports are provided on the inner wall of the block.

[0009] Preferably, a sealing plate is provided on the front side wall of the block, shape memory alloy plates are connected on both sides of the sealing plate, one end of the shape memory alloy plate is fixedly connected to a spring, inner cavity walls are opened on both sides of the inner ring side wall of the outer diaphragm pad close to the storage cavity, one end of the spring is fixedly connected to the inside of the inner cavity wall, and a heating element is provided on the inner side wall of the inner cavity wall.

[0010] Preferably, the outer ring of the inner wall of the sealing plate is provided with a rubber ring, and the inner ring side wall of the outer diaphragm gasket is provided with a rubber groove for the rubber ring to engage on the outer ring of the stopper.

[0011] Preferably, an injection channel is opened inside the outer diaphragm pad at a position corresponding to the storage cavity, an introduction tube is provided inside the injection channel, an end of the introduction tube extends inside the storage cavity, and a sealing plug is inserted into the introduction tube.

[0012] Preferably, the sealing plug is made of soft rubber material, and the outer wall of the sealing plug fits tightly with the inner wall of the introduction tube.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The present invention can further sterilize the fluid by chemical sterilization through the coordinated arrangement of the outer diaphragm pad, storage chamber, block, release port, sealing sheet, shape memory alloy sheet and spring. Under normal conditions, the chemical sterilant is always kept in a sealed state to prevent leakage. The shape memory alloy sheet is controlled by an electrical signal to deform under heat to release the spring, and the sealing sheet is opened by thrust, so that the chemical sterilant stored in the storage chamber diffuses into the interior of the lower body of the valve body through the release port, passes through the inner diaphragm pad, disinfects the lower surface of the inner diaphragm pad, and is fully mixed with the fluid to kill microorganisms in the fluid. The present invention can timely replenish new sterilizing agent through the introduction tube, and realizes the sealing of the introduction tube of the sterilizing agent after replenishment through the rubber stopper to avoid leakage, thereby facilitating timely replenishment of the sterilizing agent.

[0014] The present invention opens an embedded groove on the bottom wall of the outer diaphragm pad and installs ultraviolet lamp beads. When the ultraviolet lamp beads emit ultraviolet rays toward the inner diaphragm pad, the ultraviolet rays can penetrate the inner diaphragm pad and irradiate and sterilize the lower surface of the inner diaphragm pad and the microorganisms in the fluid. At the same time, the ultraviolet rays propagate in the fluid and can also directly act on the microorganisms in the fluid, thereby achieving the purpose of sterilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the explosion structure of the present invention; Figure 3 This is a schematic diagram of the cross-sectional bottom surface structure of the outer diaphragm pad of the present invention; Figure 4 This invention Figure 3 Schematic diagram of the enlarged structure of part A.

[0016] In the figure: 1. Lower valve body; 2. Inner diaphragm pad; 3. Outer diaphragm pad; 300. Storage chamber; 301. Inner chamber wall; 302. Injection channel; 4. Valve disc; 5. Valve stem; 6. Upper valve body; 7. Valve cover; 8. Fixing plate; 9. Bolt; 10. Ultraviolet lamp bead; 11. Stop block; 1100. Release port; 12. Sealing plate; 13. Shape memory alloy sheet; 14. Spring; 15. Inlet tube; 16. Sealing plug. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", "coaxial", "bottom", "one end", "top", "the other end", "one side", "front", "two ends", "both sides" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are 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 operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0020] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," "provided with," and the like should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0021] Reference is now made to the accompanying drawings, wherein the illustrations are intended only to illustrate certain exemplary embodiments and are not intended to limit the present invention. Like reference numerals in the various drawings indicate like or corresponding parts. Dimensions and proportions in the various drawings are for illustrative purposes only and should not be construed as limiting the present invention. These dimensions may be exaggerated relative to actual products. Example

[0022] See also Figure 1-4 , a tank bottom diaphragm valve with a sterilization function in this embodiment includes a valve lower body 1, an inner diaphragm pad 2, an outer diaphragm pad 3, a valve disc 4, a valve stem 5, a valve upper body 6 and a valve cover 7. A fluid channel is provided inside the valve lower body 1, the inner diaphragm pad 2 is provided above the fluid channel, the outer diaphragm pad 3 is located above the inner diaphragm pad 2, and there is a gap between the outer diaphragm pad 3 and the inner diaphragm pad 2. A sterilization component is provided inside the outer diaphragm pad 3, the bottom end of the valve disc 4 is connected to the outer diaphragm pad 3, the top end of the valve disc 4 is connected to the valve stem 5, the valve stem 5 vertically passes through the interior of the valve upper body 6, and the top end of the valve stem 5 is connected to the valve cover 7.

[0023] In the embodiment, a fixing plate 8 is provided above the outer diaphragm pad 3 , and the inner diaphragm pad 2 , the outer diaphragm pad 3 , and the fixing plate 8 are all fixedly connected to the valve lower body 1 by bolts 9 .

[0024] It should be noted that it is easy to disassemble and convenient for maintenance and replacement.

[0025] In the embodiment, a plurality of embedding grooves are provided on the bottom wall of the outer diaphragm pad 3 , and ultraviolet lamp beads 10 are installed inside the embedding grooves.

[0026] It should be noted that the ultraviolet lamp beads 10 are turned on to perform ultraviolet irradiation sterilization on the fluid channel and the surface of the inner diaphragm pad 2 .

[0027] In the embodiment, a plurality of storage cavities 300 are provided on the inner side wall of the outer diaphragm pad 3 , a chemical sterilant is provided inside the storage cavity 300 , a stopper 11 is provided at the end of the storage cavity 300 , and a plurality of release ports 1100 are provided on the inner wall of the stopper 11 .

[0028] It should be noted that the chemical sterilant is hydrogen peroxide. When it is not released, it is kept in a sealed state to avoid leakage. After release, the hydrogen peroxide sterilant is spread through a number of release ports 1100 to achieve the purpose of sterilization.

[0029] In the embodiment, a sealing sheet 12 is provided on the front side wall of the block 11, and shape memory alloy sheets 13 are connected on both sides of the sealing sheet 12. One end of the shape memory alloy sheet 13 is fixedly connected to a spring 14. Inner cavity walls 301 are opened on both sides of the inner ring side wall of the outer diaphragm pad 3 close to the storage cavity 300, one end of the spring 14 is fixedly connected to the inside of the inner cavity wall 301, and a heating element is provided on the inner wall of the inner cavity wall 301.

[0030] It should be noted that the heating of the heating element is controlled by an electrical signal. The electrical signal can control multiple heating elements at a time or individually, thereby achieving the purpose of sterilizing the lower surface of the inner diaphragm pad 2 and the fluid while avoiding excessive waste of the sterilizer.

[0031] In the embodiment, a rubber ring is provided on the outer ring of the inner wall of the sealing piece 12 , and a rubber groove for the rubber ring to engage is provided on the outer ring of the stopper 11 on the inner ring side wall of the outer diaphragm pad 3 .

[0032] It should be noted that the sealing of the interior of the storage cavity 300 can be maintained when the sterilizing agent is not released.

[0033] In the embodiment, an injection channel 302 is opened inside the outer diaphragm pad 3 at a position corresponding to the storage cavity 300 , an introduction tube 15 is provided inside the injection channel 302 , an end of the introduction tube 15 extends inside the storage cavity 300 , and a sealing plug 16 is inserted into the introduction tube 15 .

[0034] It should be noted that when new sterilizing agent needs to be added, the sealing plug 16 is opened and the sterilizing agent is injected into the storage cavity 300 through the introduction tube 15, and then the sealing plug 16 is inserted into the introduction tube 15 to achieve sealing.

[0035] In the embodiment, the sealing plug 16 is made of soft rubber, and the outer wall of the sealing plug 16 is tightly fitted with the inner wall of the introduction tube 15 .

[0036] It should be noted that the soft rubber material can better enable the sealing plug 16 to fit the inner wall of the introduction tube 15 , thereby enhancing the sealing performance inside the introduction tube 15 .

[0037] Working principle: During use, when it is necessary to block the flow of fluid, by rotating the valve cover 7, the valve stem 5 drives the valve disc 4 to move downward, squeezing the outer diaphragm pad 3 to push the inner diaphragm pad 2 downward, so that the inner diaphragm pad 2 fits tightly with the flow channel inside the lower body 1 of the valve body, cutting off the fluid channel, and the valve stem 5 is lifted to make the inner diaphragm pad 2 leave the flow channel inside the lower body 1 of the valve body, so that the fluid can flow, and the sealing and cutting functions of the flow channel are realized through the inner diaphragm pad 2. The ultraviolet lamp beads 10 are turned on to sterilize the fluid channel and the surface of the inner diaphragm pad 2 with ultraviolet radiation. The heating element inside the inner cavity wall 301 can also be controlled by an electrical signal to heat it, so that the shape memory alloy sheet 13 is deformed by heat. The spring 14 therefore recovers its elasticity and drives the sealing sheet 12 to move outward, so that the sealing sheet 12 leaves the outer surface of the block 11, and the chemical sterilizer inside the storage cavity 300 is released from the release port 1100 to diffuse. The chemical sterilizer passes through the inner diaphragm pad 2 and is fully mixed with the fluid, thereby sterilizing the lower surface of the inner diaphragm pad 2 and the microorganisms in the fluid.

[0038] The above-mentioned embodiments only express a certain implementation method of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent of the present invention shall be based on the attached claims.

Claims

1. A tank bottom diaphragm valve with a sterilization function, comprising a valve lower body (1), an inner diaphragm pad (2), an outer diaphragm pad (3), a valve disc (4), a valve stem (5), a valve upper body (6) and a valve cover (7), characterized in that: A fluid channel is provided inside the lower body (1) of the valve body, the inner diaphragm pad (2) is provided above the fluid channel, the outer diaphragm pad (3) is located above the inner diaphragm pad (2), a gap exists between the outer diaphragm pad (3) and the inner diaphragm pad (2), a sterilization component is provided inside the outer diaphragm pad (3), the bottom end of the valve flap (4) is connected to the outer diaphragm pad (3), the top end of the valve flap (4) is connected to the valve stem (5), the valve stem (5) vertically passes through the interior of the upper body (6) of the valve body, and the top end of the valve stem (5) is connected to the valve cover (7).

2. The tank bottom diaphragm valve with sterilization function according to claim 1, characterized in that: A fixing plate (8) is provided above the outer diaphragm pad (3), and the inner diaphragm pad (2), the outer diaphragm pad (3), and the fixing plate (8) are fixedly connected to the valve body lower body (1) via bolts (9).

3. The tank bottom diaphragm valve with sterilization function according to claim 1, characterized in that: A plurality of embedding grooves are provided on the bottom wall of the outer diaphragm pad (3), and ultraviolet lamp beads (10) are installed inside the embedding grooves.

4. The tank bottom diaphragm valve with sterilization function according to claim 1, characterized in that: A plurality of storage cavities (300) are provided on the inner side wall of the outer diaphragm pad (3), a chemical sterilant is provided inside the storage cavity (300), a stopper (11) is provided at the port of the storage cavity (300), and a plurality of release ports (1100) are provided on the inner wall of the stopper (11).

5. The tank bottom diaphragm valve with sterilization function according to claim 4, characterized in that: The front side wall of the stopper (11) is provided with a sealing sheet (12), both sides of the sealing sheet (12) are connected to shape memory alloy sheets (13), one end of the shape memory alloy sheet (13) is fixedly connected to a spring (14), and both sides of the inner ring side wall of the outer diaphragm pad (3) close to the storage cavity (300) are provided with inner cavity walls (301), one end of the spring (14) is fixedly connected to the inside of the inner cavity wall (301), and a heating element is provided on the inner side wall of the inner cavity wall (301).

6. The tank bottom diaphragm valve with sterilization function according to claim 5, characterized in that: The outer ring of the inner wall of the sealing sheet (12) is provided with a rubber ring, and the inner ring side wall of the outer diaphragm pad (3) is provided with a rubber groove for the rubber ring to engage on the outer ring of the stopper (11).

7. The tank bottom diaphragm valve with sterilization function according to claim 3, characterized in that: An injection channel (302) is provided inside the outer diaphragm pad (3) at a position corresponding to the storage cavity (300), an introduction tube (15) is provided inside the injection channel (302), an end portion of the introduction tube (15) extends inside the storage cavity (300), and a sealing plug (16) is inserted into the introduction tube (15).

8. The tank bottom diaphragm valve with sterilization function according to claim 7, characterized in that: The sealing plug (16) is made of soft rubber, and the outer wall of the sealing plug (16) is tightly fitted with the inner wall of the introduction tube (15).

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