Fluoroplastic full-lining diaphragm valve

Abstract

The utility model relates to the technical field of valves, in particular to a fluoroplastic full-lining diaphragm valve which comprises a main body component, the main body component comprises a valve body, the valve body is horizontally arranged, a control component is vertically arranged on the outer wall of the valve body, the control component comprises a valve cover, the valve cover is vertically arranged on the upper surface of the valve body, and the interior of the valve cover is communicated with the interior of the valve body. A diaphragm is horizontally arranged in the valve cover, sliding grooves are vertically formed in the left side wall and the right side wall in the valve cover, sliding rods are horizontally installed in the two sliding grooves, a movable plate is vertically and fixedly connected between the two sliding rods, a supporting pressing plate is horizontally arranged on the side wall of the movable plate, and a protruding plate is horizontally and fixedly connected to the bottom of the movable plate. And the back part of the diaphragm can be supported, so that the diaphragm is prevented from being damaged when the pressure in the pipeline is too high, the sealing and stopping effect is enhanced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a fluoroplastic fully lined diaphragm valve. Background Art

[0002] Diaphragm valve is a stop valve that uses diaphragm as opening and closing parts to close the flow channel, cut off the fluid, and separate the inner cavity of the valve body from the inner cavity of the valve cover. The diaphragm is usually made of elastic, corrosion-resistant, and non-permeable materials such as rubber and plastic. The valve body is mostly made of plastic, fiberglass, ceramic or metal-lined rubber materials.

[0003] In the existing diaphragm valve, the valve stem is usually driven up and down by the rotation of the hand wheel, and the valve stem drives the valve disc connected at the bottom to rise and fall. The bottom of the valve disc is connected to a diaphragm. The rotation of the hand wheel drives the valve stem, valve disc, and diaphragm to move up and down to achieve the sealing and opening of the diaphragm and the valve body. However, the existing diaphragm valve has the following shortcomings: after the valve disc is lowered, it is directly pressed on the diaphragm, and there is a large gap between the area around the valve disc and the diaphragm, resulting in the back of the diaphragm being unsupported. When the pressure in the pipeline is too high, it is easy to cause the diaphragm to be damaged. Therefore, we propose a fluoroplastic fully lined diaphragm valve to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and provides a fluoroplastic fully lined diaphragm valve.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fluoroplastic fully lined diaphragm valve, comprising a main body component, the main body component comprising a valve body, the valve body is horizontally arranged, the outer wall of the valve body is vertically provided with a control component, the control component comprises a valve cover, the valve cover is vertically arranged on the upper surface of the valve body, the interior of the valve cover is communicated with the interior of the valve body, a diaphragm is horizontally arranged inside the valve cover, the left and right side walls inside the valve cover are vertically provided with slide grooves, the interiors of the two slide grooves are horizontally installed with slide bars, a movable plate is vertically fixedly connected between the two slide bars, a supporting pressure plate is horizontally arranged on the side wall of the movable plate, a convex plate is horizontally fixedly connected to the bottom of the movable plate, a cross bar is horizontally arranged on the inner wall of the valve cover, the cross bar is located above the slide groove, a cylinder seat is vertically fixedly connected to the interior of the cross bar, a valve stem is vertically movably connected to the interior of the cylinder seat, the bottom of the valve stem is movably connected to the top of the movable plate, the top of the valve stem vertically penetrates the top of the valve cover upward, and a hand wheel is fixedly connected to the top of the valve stem.

[0006] further:

[0007] Flanges are installed at both left and right ends of the valve body, a baffle is vertically arranged inside the valve body, and a groove is arranged on the top of the baffle.

[0008] further:

[0009] The top of the baffle is located inside the valve cover, the convex plate is located directly above the groove, the diaphragm is located between the convex plate and the groove, and the groove and the convex plate can be engaged with each other.

[0010] further:

[0011] The slide groove is located above the diaphragm, and the support pressure plate is located below the slide rod.

[0012] further:

[0013] A rubber pad is arranged on the surface of the convex plate.

[0014] further:

[0015] The outer wall of the valve stem and the interior of the cylinder seat are respectively provided with threads that engage with each other.

[0016] The utility model has the following beneficial effects:

[0017] Compared with the prior art, this fluoroplastic fully lined diaphragm valve, through the main body component and control component, by turning the hand wheel, the hand wheel drives the valve stem to rotate, the valve stem will move vertically downward under the action of the cylinder seat, the valve stem will drive the movable plate to move vertically downward, the movable plate will drive the convex plate to push the middle part of the diaphragm into the interior of the groove, complete the sealing cutoff, and the supporting pressure plate will support the back part of the diaphragm, at the same time, the movable plate will make the two slide bars slide vertically downward in the two slide grooves respectively, compared with the existing device, the valve disc is directly pressed on the diaphragm after it descends, and there is a large gap between the area around the valve disc and the diaphragm, resulting in the back part of the diaphragm being unsupported. When the pressure in the pipeline is too high, the diaphragm is easily damaged. The device can support the back part of the diaphragm to avoid damage to the diaphragm when the pressure in the pipeline is too high, thereby enhancing the sealing cutoff effect and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model from a first perspective;

[0019] Figure 2 It is a schematic diagram of the overall structure of the utility model from a second viewing angle;

[0020] Figure 3 It is a front cross-sectional view of the overall structure of the utility model;

[0021] Figure 4 It is a side sectional view of the overall structure of the utility model.

[0022] Legend:

[0023] 100, main body; 110, valve body; 120, flange; 130, baffle; 140, groove; 200, control component; 210, valve cover; 220, diaphragm; 230, slide groove; 240, slide rod; 250, moving plate; 260, supporting pressure plate; 270, convex plate; 281, cross bar; 282, cylinder seat; 291, valve stem; 292, hand wheel. DETAILED DESCRIPTION

[0024] Reference Figure 1-4 The utility model provides a fluoroplastic fully lined diaphragm valve, which includes a main body component 100 and a control component 200.

[0025] The main body component 100 is used to be connected to the pipeline and cooperate with the control component 200 to control the opening and closing of the pipeline. Specifically, the main body component 100 includes a valve body 110, which is horizontally arranged. Flanges 120 are installed on the left and right ends of the valve body 110. A baffle 130 is vertically arranged inside the valve body 110. A groove 140 is arranged on the top of the baffle 130. The diameter of the lower part of the baffle 130 is the same as the diameter inside the valve body 110, and the diameter of the upper part of the baffle 130 is the same as the diameter inside the valve cover 210. When used specifically, the valve body 110 is connected to the pipeline through the flange 120, and the groove 140 arranged on the upper end of the baffle 130 is used to cooperate with the convex plate 270 to engage the diaphragm 220 to complete the sealing cutoff.

[0026] The control component 200 can support the back part of the diaphragm 220 to prevent the diaphragm 220 from being damaged when the pressure in the pipeline is too high, thereby enhancing the sealing and cutting-off effect and extending the service life. Specifically, the control component 200 includes a valve cover 210, which is vertically arranged on the upper surface of the valve body 110, and the interior of the valve cover 210 is connected to the interior of the valve body 110. The diaphragm 220 is horizontally arranged inside the valve cover 210, and the left and right side walls inside the valve cover 210 are vertically arranged with slide grooves 230, and the interiors of the two slide grooves 230 are horizontally installed with slide rods 2 40, a movable plate 250 is vertically fixedly connected between the two slide bars 240, a support plate 260 is horizontally arranged on the side wall of the movable plate 250, a convex plate 270 is horizontally fixedly connected to the bottom of the movable plate 250, a cross bar 281 is horizontally arranged on the inner wall of the valve cover 210, the cross bar 281 is located above the slide groove 230, a cylinder seat 282 is vertically fixedly connected inside the cross bar 281, a valve stem 291 is vertically movably connected inside the cylinder seat 282, the bottom of the valve stem 291 is movably connected to the top of the movable plate 250, and the top of the valve stem 291 vertically penetrates the valve cover 210 upwards The top of the valve stem 291 is fixedly connected with a hand wheel 292, the top of the baffle 130 is located inside the valve cover 210, the convex plate 270 is located directly above the groove 140, the diaphragm 220 is located between the convex plate 270 and the groove 140, the groove 140 and the convex plate 270 can be engaged with each other, the slide groove 230 is located above the diaphragm 220, the support plate 260 is located below the slide rod 240, the surface of the convex plate 270 is provided with a rubber pad, the rubber pad can reduce the wear of the convex plate 270 on the diaphragm 220, the outer wall of the valve stem 291 and the inside of the cylinder seat 282 are respectively provided with corresponding The interlocking threads, when in use, are rotated by the hand wheel 292 to drive the valve stem 291 to rotate, and the valve stem 291 will move vertically downward under the action of the cylinder seat 282, and the valve stem 291 will drive the movable plate 250 to move vertically downward, and the movable plate 250 will drive the convex plate 270 to push the middle part of the diaphragm 220 into the interior of the groove 140 to complete the sealing cutoff, and the support pressure plate 260 will support the back part of the diaphragm 220, and at the same time, the movable plate 250 will make the two slide rods 240 slide vertically downward in the two slide grooves 230 respectively.

[0027] Working principle: During specific use, the valve body 110 is connected to the pipeline through the flange 120, and the hand wheel 292 is turned to drive the valve stem 291 to rotate. The valve stem 291 will move vertically downward under the action of the cylinder seat 282, and the valve stem 291 will drive the movable plate 250 to move vertically downward. The movable plate 250 will drive the convex plate 270 to push the middle part of the diaphragm 220 into the interior of the groove 140 to complete the sealing cutoff, and the support pressure plate 260 will support the back part of the diaphragm 220. At the same time, the movable plate 250 will cause the two slide bars 240 to slide vertically downward in the two slide grooves 230 respectively.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fluoroplastic fully lined diaphragm valve, comprising a main body component (100), characterized in that: The main body component (100) comprises a valve body (110), the valve body (110) is arranged horizontally, a control component (200) is vertically arranged on the outer wall of the valve body (110), the control component (200) comprises a valve cover (210), the valve cover (210) is vertically arranged on the upper surface of the valve body (110), the interior of the valve cover (210) is communicated with the interior of the valve body (110), a diaphragm (220) is horizontally arranged inside the valve cover (210), and sliding grooves (230) are vertically arranged on the left and right side walls inside the valve cover (210), sliding rods (240) are horizontally installed inside the two sliding grooves (230), and a movable plate (250) is vertically fixedly connected between the two sliding rods (240). 0), a supporting plate (260) is horizontally arranged on the side wall of the movable plate (250), a convex plate (270) is horizontally fixedly connected to the bottom of the movable plate (250), a cross bar (281) is horizontally arranged on the inner wall of the valve cover (210), the cross bar (281) is located above the slide groove (230), a cylinder seat (282) is vertically fixedly connected inside the cross bar (281), a valve stem (291) is vertically movably connected inside the cylinder seat (282), the bottom of the valve stem (291) is movably connected to the top of the movable plate (250), the top of the valve stem (291) vertically upwards penetrates the top of the valve cover (210), and the top of the valve stem (291) is fixedly connected to a hand wheel (292).

2. A fluoroplastic fully lined diaphragm valve according to claim 1, characterized in that: Flanges (120) are installed at both left and right ends of the valve body (110), a baffle (130) is vertically arranged inside the valve body (110), and a groove (140) is arranged at the top of the baffle (130).

3. A fluoroplastic fully lined diaphragm valve according to claim 2, characterized in that: The top of the baffle (130) is located inside the valve cover (210), the convex plate (270) is located directly above the groove (140), the diaphragm (220) is located between the convex plate (270) and the groove (140), and the groove (140) and the convex plate (270) can be engaged with each other.

4. A fluoroplastic fully lined diaphragm valve according to claim 1, characterized in that: The slide groove (230) is located above the diaphragm (220), and the support pressure plate (260) is located below the slide rod (240).

5. A fluoroplastic fully lined diaphragm valve according to claim 1, characterized in that: A rubber pad is provided on the surface of the convex plate (270).

6. A fluoroplastic fully lined diaphragm valve according to claim 1, characterized in that: The outer wall of the valve stem (291) and the interior of the cartridge seat (282) are respectively provided with threads that engage with each other.

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