Diaphragm valve, hold-down mechanism and method of use

Abstract

The invention belongs to the technical field of engineering elements, and particularly relates to a valve, in particular to a diaphragm valve, a pressing mechanism and a using method, and the diaphragm valve comprises a valve body, a diaphragm piece and the pressing mechanism; the diaphragm piece is arranged in the valve body, the pressing mechanism is arranged in the valve body, and the pressing mechanism is arranged above the diaphragm piece. The pressing mechanism is suitable for pressing the area between the fixing hole in the diaphragm piece and the pressed position when the diaphragm piece is pressed, so that deformation of the fixing hole used for fixing in the diaphragm piece is avoided, and then deformation of the fixing hole is avoided when the diaphragm piece is pressed. The situation that the diaphragm piece cannot be stably and firmly connected with the valve body after the fixing hole deforms is avoided, and use of the diaphragm pump is prevented from being affected.

Description

Technical Field

[0001] The present invention belongs to the technical field of engineering components, and specifically relates to valves, and in particular to a diaphragm valve, a clamping mechanism and a use method. Background Art

[0002] In the diaphragm valve, the opening and closing of the flow channel is regulated by the deformation degree of the diaphragm. The diaphragm is installed in the valve body through the fixing holes set on it. When regulating the opening and closing of the flow channel, the diaphragm is pressed and deformed, and the fixing holes will be pulled during the deformation process. Long-term use will cause the fixing holes to deform, resulting in the diaphragm being unable to be fixed in the valve body, affecting the use of the diaphragm valve.

[0003] Therefore, in order to avoid the technical problem that the fixing holes on the diaphragm sheet are deformed due to the diaphragm valve pressing on the diaphragm sheet to cause deformation during use, it is necessary to design a new diaphragm valve, a clamping mechanism and a method of use.

[0004] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0005] The embodiments of the present disclosure at least provide a diaphragm valve, a clamping mechanism and a method of use.

[0006] In a first aspect, an embodiment of the present disclosure provides a diaphragm valve, comprising: Valve body, diaphragm and clamping mechanism; The diaphragm is arranged in the valve body, the pressing mechanism is arranged in the valve body, and the pressing mechanism is arranged above the diaphragm; The pressing mechanism is suitable for pressing the area between the fixing hole and the pressed position on the diaphragm when the diaphragm is pressed, so as to avoid deformation of the fixing hole used for fixing on the diaphragm.

[0007] In an optional embodiment, the clamping mechanism includes: a diaphragm pressing block; The diaphragm pressing block is arranged above the diaphragm sheet, and the diaphragm pressing block is arranged in the valve body; A plurality of protrusions are equidistantly arranged on the side wall of the diaphragm pressing block in the circumferential direction; The side wall of the protrusion is vertically provided with a protrusion; The convex block corresponds to the pressing block arranged in the valve body; When the diaphragm pressing block descends, it is suitable for driving the corresponding pressing block to move.

[0008] In an optional embodiment, the valve body includes: a valve seat and a valve seat cover; The valve seat cover is arranged on the top surface of the valve seat, and the diaphragm is arranged between the valve seat and the valve seat cover; The valve seat cover is provided with a through hole; The inner wall of the through hole is provided with a plurality of strip grooves equidistantly arranged in a circumferential direction, and the strip grooves are arranged vertically; A pressing block is arranged in the strip groove, and the pressing block corresponds to the convex block; The pressing block is provided with a slot corresponding to the convex strip; When the diaphragm pressing block descends, the protrusion contacts the pressing block to drive the pressing block to move along the radial direction of the through hole, so that the pressing block is away from the axis of the through hole.

[0009] In an optional embodiment, the valve seat is provided with a liquid inlet and a liquid outlet; A flow channel is provided inside the valve seat, and the flow channel communicates with the liquid inlet and the liquid outlet; A convex portion is provided on the bottom surface of the flow channel, and the convex portion is located below the diaphragm. The diaphragm is pressed down by the diaphragm pressing block. When the diaphragm is pressed down to contact with the convex portion, the flow channel is closed; The pressure-bearing position of the diaphragm is the middle area of ​​the diaphragm.

[0010] In an optional embodiment, a ring body is arranged on the top surface of the diaphragm, and the ring body is arranged around the center of the diaphragm; The fixing hole of the diaphragm is farther away from the center of the diaphragm than the ring body; The bottom surface of the pressing block contacts the ring body.

[0011] In an optional embodiment, a driving mechanism is provided on the valve body; The driving mechanism is connected to the diaphragm pressing block; The driving mechanism is suitable for driving the diaphragm pressing block to rise and fall, so as to control the opening and closing of the flow channel in the valve body.

[0012] In an optional embodiment, the driving mechanism includes: a driving motor; The driving motor is connected to a wire rod; The bottom end of the screw rod is connected to the diaphragm pressing block through a coupling; The driving motor is suitable for lifting and lowering the diaphragm pressing block through a screw rod.

[0013] In an optional embodiment, the driving motor is disposed in a housing, and the housing is connected to the top surface of the valve seat body; The driving motor is also connected to an opening indicator rod, and the driving motor is suitable for driving the opening indicator rod to rotate; The top surface of the shell is provided with a dial, and the opening indicating rod is rotated to correspond to the dial to display the opening at that time.

[0014] In a second aspect, the present disclosure also provides a clamping mechanism for the above-mentioned diaphragm valve, comprising: Diaphragm briquetting; The diaphragm pressing block is arranged above the diaphragm sheet, and the diaphragm pressing block is arranged in the valve body of the diaphragm valve; A plurality of protrusions are equidistantly arranged on the side wall of the diaphragm pressing block in the circumferential direction; The side wall of the protrusion is vertically provided with a protrusion; The convex block corresponds to the pressing block arranged in the valve body; A through hole is provided on the valve seat cover in the valve body; The inner wall of the through hole is provided with a plurality of strip grooves equidistantly arranged in a circumferential direction, and the strip grooves are arranged vertically; A pressing block is arranged in the strip groove, and the pressing block corresponds to the convex block; The pressing block is provided with a slot corresponding to the convex strip; When the diaphragm pressing block descends, the protrusion contacts the pressing block to drive the pressing block to move along the radial direction of the through hole, so that the pressing block is away from the axis of the through hole, and the pressing block contacts the ring body on the diaphragm sheet.

[0015] In a third aspect, the present disclosure also provides a method for using the diaphragm valve, including: When the diaphragm is pressed, the pressing mechanism presses the area between the fixing hole and the pressed position on the diaphragm to prevent the fixing hole on the diaphragm from deforming.

[0016] The beneficial effect of the present invention is that the diaphragm valve comprises: a valve body, a diaphragm and a clamping mechanism; the diaphragm is arranged in the valve body, the clamping mechanism is arranged in the valve body, and the clamping mechanism is arranged above the diaphragm; the clamping mechanism is suitable for compressing the area between the fixing hole and the pressure position on the diaphragm when the diaphragm is pressed, so as to avoid deformation of the fixing hole used for fixing on the diaphragm, thereby achieving the goal of avoiding deformation of the fixing hole when the diaphragm is pressed, avoiding deformation of the fixing hole that causes the diaphragm to be unable to be stably and firmly connected to the valve body, and avoiding the use of the diaphragm pump to be affected.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic structural diagram of a diaphragm valve provided in an embodiment of the present disclosure; Figure 2 A cross-sectional view of a diaphragm valve provided in an embodiment of the present disclosure; Figure 3 A schematic diagram of the structure of a diaphragm pressing block provided in an embodiment of the present disclosure; Figure 4 A schematic diagram of the structure of a valve seat cover provided in an embodiment of the present disclosure; Figure 5 A schematic diagram of the structure of a diaphragm sheet provided in an embodiment of the present disclosure; Figure 6 A schematic diagram of the bottom structure of a diaphragm provided in an embodiment of the present disclosure.

[0021] In the figure: 1 valve body, 11 valve seat, 111 liquid inlet, 112 liquid outlet, 113 flow channel, 114 raised portion, 12 valve seat cover, 121 through hole, 122 strip groove, 123 pressing block, 124 card slot; 2 diaphragm, 21 fixing hole, 22 ring body, 23 protrusion; 3 a clamping mechanism, 31 a diaphragm pressing block, 32 a convex block, 33 a convex strip; 4 driving mechanism, 41 driving motor, 42 screw rod, 43 housing, 44 opening indicator rod, 45 dial. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0023] In this article, when it is mentioned that the first component is located on the second component, this may mean that the first component may be directly formed on the second component, or the third component may be interposed between the first component and the second component. In addition, in the drawings, in order to effectively describe the technical content, the thickness of the components may be exaggerated or reduced.

[0024] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0025] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0026] like Figure 1 As shown, in at least one disclosed embodiment, a diaphragm valve is provided, comprising: a valve body 1, a diaphragm 2 and a clamping mechanism 3; the diaphragm 2 is arranged in the valve body 1, the clamping mechanism 3 is arranged in the valve body 1, and the clamping mechanism 3 is arranged above the diaphragm 2; the clamping mechanism 3 is suitable for clamping the area between the fixing hole 21 and the pressed position on the diaphragm 2 when the diaphragm 2 is pressed, so as to avoid deformation of the fixing hole 21 used for fixing on the diaphragm 2, thereby achieving the goal of avoiding deformation of the fixing hole 21 when the diaphragm 2 is pressed, avoiding deformation of the fixing hole 21, avoiding deformation of the fixing hole 21 that causes the diaphragm 2 to be unable to be stably and firmly connected to the valve body 1, and avoiding the use of the diaphragm pump to be affected.

[0027] like Figure 3 As shown, in an optional embodiment, the clamping mechanism 3 includes: a diaphragm pressing block 31; the diaphragm pressing block 31 is arranged above the diaphragm sheet 2, and the diaphragm pressing block 31 is arranged in the valve body 1; a plurality of protrusions 32 are circumferentially equidistantly arranged on the side wall of the diaphragm pressing block 31; a convex strip 33 is vertically arranged on the side wall of the protrusion 32; the protrusion 32 corresponds to the pressing block 123 arranged in the valve body 1; when the diaphragm pressing block 31 descends, it is suitable for driving the corresponding pressing block 123 to move; the diaphragm pressing block 31 will press the diaphragm sheet 2 to block the flow channel 113 in the valve body 1 by pressing the deformed diaphragm sheet 2, and adjust the opening and closing of the flow channel 113.

[0028] like Figure 4 As shown, in an optional embodiment, the valve body 1 includes: a valve seat 11 and a valve seat cover 12; the valve seat cover 12 is arranged on the top surface of the valve seat 11, and the diaphragm 2 is arranged between the valve seat 11 and the valve seat cover 12; a through hole 121 is opened on the valve seat cover 12; a plurality of strip grooves 122 are opened equidistantly on the inner wall of the through hole 121 in the circumferential direction, and the strip grooves 122 are arranged vertically; a pressing block 123 is arranged in the strip groove 122, and the pressing block 123 corresponds to the protrusion 32; a card groove 124 corresponding to the protrusion 33 is opened on the pressing block 123; when the diaphragm pressing block 31 descends, the protrusion 32 contacts the pressing block 123 to drive the pressing block 123 to move radially along the through hole 121 (the moving direction is shown in FIG. Figure 4 As shown in F in the figure, the pressing block 123 is moved away from the axis of the through hole 121; the pressing block 123 and the strip groove 122 can be connected by a spring and an additional mechanism, so that after the pressing block 123 moves radially along the through hole 121 and contracts into the strip groove 122, it can be reset by the spring and the additional mechanism; in the initial state, the diaphragm 2 is not pressed by the diaphragm pressing block 31, and the flow channel 113 is in a fully open state. The pressing block 123 protrudes from the corresponding strip groove 122 in the radial direction of the through hole 121, and the protrusion 32 is located above the corresponding pressing block 123. At this time, the pressing block 123 contacts the top surface of the diaphragm 2, and the contact position is between the ring body 22 and the center position of the diaphragm 2. At this time, the pressing block 123 will block the diaphragm 2 to prevent the pressure of the water flow in the flow channel 113 from blocking the diaphragm 2 is pushed upward to prevent the diaphragm 2 from being deformed by the pressure of the water flow, ensure that the size of the flow channel 113 remains constant, and ensure that the flow rate is controllable; when the diaphragm pressing block 31 moves downward, the protrusion 32 will move downward with the diaphragm pressing block 31, and the convex strip 33 will enter the corresponding card groove 124. The diaphragm 2 is deformed downward to reduce the width of the flow channel 113. At this time, the water pressure in the flow channel 113 will impact the diaphragm 2. The cooperation between the convex strip 33 and the card groove 124 prevents the diaphragm 2 from being shaken by the impact of the water flow; the diaphragm 2 can be fixed to the top surface of the valve seat 11 by bolts, and the bolts can pass through the fixing holes 21. Since the bolts pass through the fixing holes 21, when the diaphragm 2 is deformed, the pulling of the fixing holes 21 by the deformation and the obstruction of the fixing holes 21 by the bolts will cause the fixing holes 21 to be pulled and deformed.

[0029] In an optional embodiment, the valve seat 11 is provided with a liquid inlet 111 and a liquid outlet 112; a flow channel 113 is provided inside the valve seat 11, and the flow channel 113 connects the liquid inlet 111 and the liquid outlet 112; a protrusion 114 is provided on the bottom surface of the flow channel 113, and the protrusion 114 is located below the diaphragm 2, and the diaphragm 2 is pressed down by the diaphragm pressing block 31. When the diaphragm 2 is pressed down to contact with the protrusion 114, the flow channel 113 is closed; the pressure position of the diaphragm 2 is the middle area of ​​the diaphragm 2; Figure 6 As shown, a protrusion 23 can be provided on the bottom surface of the diaphragm 2. When the diaphragm 2 is pressed downward, the protrusion 23 can contact the protrusion 114 so that the flow channel 113 is closed. The protrusion 114 and the protrusion 23 are both arc-shaped, so that the protrusion 114 and the protrusion 23 are in line contact when they are in contact, so as to ensure that water cannot flow through when the flow channel 113 is closed; the middle area is the center of the diaphragm 2 and the area within a certain range around the center, and the range of the pressure position is smaller than the range between the ring body 22 and the center.

[0030] like Figure 5 As shown, in an optional embodiment, a ring body 22 is provided on the top surface of the diaphragm 2, and the ring body 22 is arranged around the center of the diaphragm 2; the fixing hole 21 of the diaphragm 2 is farther away from the center position of the diaphragm 2 than the ring body 22; the bottom surface of the pressing block 123 contacts the ring body 22; when the diaphragm pressing block 31 is pressed down, the protrusion 32 contacts the pressing block 123, so that the pressing block 123 shrinks into the strip groove 122, and the pressing block 123 contacts the surface of the ring body 22, and the ring body 22 is pressed by the pressing block 123. At this time, the center of the diaphragm 2 and the position around the center are pressed down. Since the ring body 22 is pressed, the deformed area on the diaphragm 2 is the area between the ring body 22 and the center of the diaphragm 2, so that the diaphragm 2 at the fixing hole 21 is prevented from being deformed by the deformation at other positions, and the fixing hole 21 is prevented from being deformed by the deformation of the diaphragm 2.

[0031] In an optional embodiment, a driving mechanism 4 is provided on the valve body 1; the driving mechanism 4 is connected to the diaphragm pressing block 31; the driving mechanism 4 is suitable for driving the diaphragm pressing block 31 to rise and fall, so as to control the opening and closing of the flow channel 113 in the valve body 1.

[0032] In an optional embodiment, the driving mechanism 4 includes: a driving motor 41; the driving motor 41 can be a stepping motor, which is precisely controlled by a control module; the driving motor 41 is connected to a screw rod 42; the bottom end of the screw rod 42 is connected to the diaphragm pressure block 31 through a coupling; the driving motor 41 is suitable for lifting and lowering the diaphragm pressure block 31 through the screw rod 42; the output shaft of the driving motor 41 can be connected to the screw rod 42 through a transmission mechanism, and the diaphragm pressure block 31 is lifted and lowered by driving the screw rod 42, and the diaphragm pressure block 31 will not rotate during the lifting process; a torque sensor can be provided in the driving motor 41, and the torque sensor is electrically connected to the control module to detect the torque of the driving motor 41.

[0033] In an optional embodiment, the drive motor 41 is arranged in a housing 43, and the housing 43 is connected to the top surface of the valve body 1; the drive motor 41 is also connected to an opening indicator rod 44, and the drive motor 41 is suitable for driving the opening indicator rod 44 to rotate; a dial 45 is arranged on the top surface of the housing 43, and the opening indicator rod 44 corresponds to the dial 45 after rotation to display the opening at this time; the drive motor 41 drives the diaphragm pressing block 31 to descend through the screw rod 42, and synchronously drives the opening indicator rod 44 to rotate, and the cooperation between the opening indicator rod 44 and the dial 45 displays the opening of the diaphragm at this time. The opening of the valve, for example, is indicated by the scale on the dial 45 pointed by the opening indicator rod 44, which shows the distance the diaphragm pressing block 31 has descended at this time, that is, the distance the diaphragm sheet 2 has been pressed down. The flow channel 113 is reduced due to the deformation of the diaphragm sheet 2 under pressure, and the opening of the valve can be reflected by the scale; the surface of the shell 43 can be provided with a transparent area, and the dial 45 is arranged around the transparent area. The position to which the opening indicator rod 44 points after rotation can be observed through the transparent area, and then the position of the dial 45 to which the opening indicator rod 44 points after rotation can be determined; the scale on the dial 45 can directly reflect the opening of the flow channel 113.

[0034] like Figure 2As shown, in the initial state, the protrusion 32 on the diaphragm pressing block 31 is not in contact with the corresponding pressing block 123. At this time, the diaphragm pressing block 31 does not apply pressure to the diaphragm sheet 2, and the flow channel 113 is in a fully open state. The pressing block 123 protrudes the strip groove 122 in the radial direction of the through hole 121, and the pressing block 123 contacts the top surface of the diaphragm sheet 2 to prevent the pressure of the water flow in the flow channel 113 from causing the diaphragm sheet 2 to deform upward, and to prevent the deformation from causing the fixing hole 21 to deform. When the opening of the flow channel 113 needs to be adjusted, the driving motor 41 drives the diaphragm pressing block 31 to press down. At this time, the convex strip 33 of the protrusion 32 will enter the corresponding groove 124, and the protrusion 32 will squeeze the pressing block 123 so that the pressing block 123 will shrink into the strip groove 122, and the shrinking pressing block 123 will contact the ring body 22 on the top surface of the diaphragm 2 and press the ring body 22. At this time, the diaphragm pressing block 31 presses the diaphragm 2 downward, and the deformation of the compressed position of the diaphragm 2 is blocked by the ring body 22 through the contact between the pressing block 123 and the ring body 22, thereby avoiding deformation of the fixing hole 21. The cooperation between the convex strip 33 and the groove 124 can avoid the diaphragm 2 from shaking when the water flow impacts the diaphragm 2.

[0035] At least one other disclosed embodiment further provides a clamping mechanism 3 for the above-mentioned diaphragm valve, comprising: a diaphragm pressing block 31; the diaphragm pressing block 31 is arranged above the diaphragm sheet 2, and the diaphragm pressing block 31 is arranged in the valve body 1 of the diaphragm valve; a plurality of protrusions 32 are arranged equidistantly on the side wall of the diaphragm pressing block 31 in the circumferential direction; a protrusion 33 is vertically arranged on the side wall of the protrusion 32; the protrusion 32 corresponds to the pressing block 123 arranged in the valve body 1; a through hole 121 is opened on the valve seat cover 12 in the valve body 1; the A plurality of strip grooves 122 are equidistantly provided on the inner wall of the through hole 121 in the circumferential direction, and the strip grooves 122 are vertically arranged; a pressure block 123 is arranged in the strip groove 122, and the pressure block 123 corresponds to the protrusion 32; a card groove 124 corresponding to the protrusion 33 is provided on the pressure block 123; when the diaphragm pressure block 31 descends, the protrusion 32 contacts the pressure block 123 to drive the pressure block 123 to move radially along the through hole 121, so that the pressure block 123 is away from the axis of the through hole 121, and the pressure block 123 contacts the ring body 22 on the diaphragm sheet 2.

[0036] At least one other disclosed embodiment also provides a method for using the above-mentioned diaphragm valve, including: when the diaphragm 2 is pressed, the clamping mechanism 3 presses the area between the fixing hole 21 on the diaphragm 2 and the pressed position to avoid deformation of the fixing hole 21 on the diaphragm 2 used for fixing.

[0037] To summarize, the diaphragm valve comprises: a valve body 1, a diaphragm 2 and a clamping mechanism 3; the diaphragm 2 is arranged in the valve body 1, the clamping mechanism 3 is arranged in the valve body 1, and the clamping mechanism 3 is arranged above the diaphragm 2; the clamping mechanism 3 is suitable for clamping the area between the fixing hole 21 and the pressed position on the diaphragm 2 when the diaphragm 2 is pressed, so as to avoid deformation of the fixing hole 21 used for fixing on the diaphragm 2, thereby avoiding deformation of the fixing hole 21 when the diaphragm 2 is pressed, avoiding deformation of the fixing hole 21, avoiding deformation of the fixing hole 21 that causes the diaphragm 2 to be unable to be stably and firmly connected to the valve body 1, and avoiding the use of the diaphragm pump to be affected.

[0038] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0040] Spatially relative terms, such as "inside", "outside", "below", "below", "down", "above", "on", etc., may be used herein to facilitate description of the relationship of one element or feature to another element or feature as illustrated in the figure. In addition to the orientation depicted in the figure, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is turned over, the elements described as "below" or "below" other elements or features will be oriented to be "above" other elements or features. Therefore, the example term "below" can cover the orientation above and below. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0041] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A diaphragm valve, characterized in that: include: A valve body (1), a diaphragm (2) and a clamping mechanism (3); The diaphragm (2) is arranged in the valve body (1), the pressing mechanism (3) is arranged in the valve body (1), and the pressing mechanism (3) is arranged above the diaphragm (2); The pressing mechanism (3) is suitable for pressing the area between the fixing hole (21) on the diaphragm (2) and the pressed position when the diaphragm (2) is pressed, so as to avoid deformation of the fixing hole (21) on the diaphragm (2) used for fixing.

2. The diaphragm valve according to claim 1, characterized in that: The pressing mechanism (3) comprises: a diaphragm pressing block (31); The diaphragm pressing block (31) is arranged above the diaphragm sheet (2), and the diaphragm pressing block (31) is arranged inside the valve body (1); A plurality of protrusions (32) are equidistantly arranged on the side wall of the diaphragm pressing block (31); A convex strip (33) is vertically arranged on the side wall of the convex block (32); The protrusion (32) corresponds to a pressure block (123) provided in the valve body (1); When the diaphragm pressing block (31) descends, it is suitable for driving the corresponding pressing block (123) to move.

3. The diaphragm valve according to claim 2, characterized in that: The valve body (1) comprises: a valve seat (11) and a valve seat cover (12); The valve seat cover (12) is arranged on the top surface of the valve seat (11), and the diaphragm (2) is arranged between the valve seat (11) and the valve seat cover (12); The valve seat cover (12) is provided with a through hole (121); A plurality of strip grooves (122) are equidistantly formed on the inner wall of the through hole (121) in the circumferential direction, and the strip grooves (122) are arranged vertically; A pressing block (123) is provided in the strip-shaped groove (122), and the pressing block (123) corresponds to the protrusion (32); The pressing block (123) is provided with a slot (124) corresponding to the convex strip (33); When the diaphragm pressing block (31) descends, the protrusion (32) contacts the pressing block (123) to drive the pressing block (123) to move radially along the through hole (121), so that the pressing block (123) moves away from the axis of the through hole (121).

4. The diaphragm valve according to claim 3, characterized in that: The valve seat (11) is provided with a liquid inlet (111) and a liquid outlet (112); A flow channel (113) is provided inside the valve seat (11), and the flow channel (113) is connected to the liquid inlet (111) and the liquid outlet (112); A protrusion (114) is provided on the bottom surface of the flow channel (113), the protrusion (114) is located below the diaphragm (2), the diaphragm (2) is pressed downward by the diaphragm pressing block (31), and when the diaphragm (2) is pressed downward until it contacts the protrusion (114), the flow channel (113) is closed; The pressure-bearing position of the diaphragm (2) is the middle area of ​​the diaphragm (2).

5. The diaphragm valve according to claim 3, characterized in that: A ring body (22) is arranged on the top surface of the diaphragm (2), and the ring body (22) is arranged around the center of the diaphragm (2); The fixing hole (21) of the diaphragm (2) is located away from the center of the diaphragm (2) compared to the ring body (22); The bottom surface of the pressing block (123) contacts the ring body (22).

6. The diaphragm valve according to claim 3, characterized in that: The valve body (1) is provided with a driving mechanism (4); The driving mechanism (4) is connected to the diaphragm pressing block (31); The driving mechanism (4) is suitable for driving the diaphragm pressing block (31) to rise and fall, so as to control the opening and closing of the flow channel (113) in the valve body (1).

7. The diaphragm valve according to claim 6, characterized in that: The driving mechanism (4) comprises: a driving motor (41); The driving motor (41) is connected to a threaded rod (42); The bottom end of the screw rod (42) is connected to the diaphragm pressing block (31) via a coupling; The driving motor (41) is suitable for raising and lowering the diaphragm pressing block (31) via a screw rod (42).

8. The diaphragm valve according to claim 7, characterized in that: The driving motor (41) is arranged in a housing (43), and the housing (43) is connected to the top surface of the valve body (1); The driving motor (41) is also connected to an opening indicator rod (44), and the driving motor (41) is suitable for driving the opening indicator rod (44) to rotate; A scale plate (45) is provided on the top surface of the housing (43), and the opening indicator rod (44) rotates to correspond to the scale plate (45) to display the opening of the flow channel (113) at that time.

9. A clamping mechanism (3) for a diaphragm valve as claimed in claim 1, characterized in that: include: Diaphragm pressing block (31); The diaphragm pressing block (31) is arranged above the diaphragm sheet (2) of the diaphragm valve, and the diaphragm pressing block (31) is arranged inside the valve body (1) of the diaphragm valve; A plurality of protrusions (32) are equidistantly arranged on the side wall of the diaphragm pressing block (31); A convex strip (33) is vertically arranged on the side wall of the convex block (32); The protrusion (32) corresponds to a pressure block (123) provided in the valve body (1); A through hole (121) is formed on the valve seat cover (12) in the valve body (1); A plurality of strip grooves (122) are equidistantly formed on the inner wall of the through hole (121) in the circumferential direction, and the strip grooves (122) are arranged vertically; A pressing block (123) is provided in the strip-shaped groove (122), and the pressing block (123) corresponds to the protrusion (32); The pressing block (123) is provided with a slot (124) corresponding to the convex strip (33); When the diaphragm pressing block (31) descends, the protrusion (32) contacts the pressing block (123) to drive the pressing block (123) to move radially along the through hole (121), so that the pressing block (123) moves away from the axis of the through hole (121), and the pressing block (123) contacts the ring body (22) on the diaphragm sheet (2).

10. A method for using the diaphragm valve according to claim 1, characterized in that: include: When the diaphragm (2) is pressed, the pressing mechanism (3) presses the area between the fixing hole (21) on the diaphragm (2) and the pressed position, so as to prevent the fixing hole (21) on the diaphragm (2) from deforming.

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