Manual diaphragm valve with locking function

Abstract

The utility model provides a manual diaphragm valve with a locking function, which comprises a diaphragm valve body and a locking mechanism, and the locking mechanism is connected with the diaphragm valve body. The locking mechanism can be switched between an unlocking state and a locking state so that the diaphragm valve body can be unlocked or locked. According to the manual diaphragm valve with the locking function, through cooperation of the diaphragm valve body and the locking mechanism, when the diaphragm valve body is locked, the diaphragm valve body can only be in an opened or closed state so as to meet the current use condition, and when the diaphragm valve body is unlocked, the diaphragm valve body can be freely opened or closed. According to the manual diaphragm valve with the locking function, the safety in the semiconductor production process can be guaranteed, flowing leakage caused by mistaken touch is avoided, it can be guaranteed that flowing and pressure of fluid are strictly controlled, the quality and consistency of produced products are guaranteed, cross contamination between different substances can be avoided, and the purity of the products is guaranteed.

Description

Technical Field

[0001] The present application relates to the technical field of semiconductor production equipment, and particularly to a manual diaphragm valve with a locking function. Background Art

[0002] A manual diaphragm valve is a common fluid control device that adjusts or cuts off fluid flow through manual operation. When the user operates the handle, the handle drives a connecting rod or directly acts on the diaphragm, causing the diaphragm to move up and down. When the diaphragm rises, the fluid can pass through the channel in the valve body; when the diaphragm descends and presses against the valve seat, the fluid flow is blocked. The design of the diaphragm enables it to adapt to various fluid media and maintain good sealing performance. In the semiconductor industry, manual diaphragm valves can be used for process control. The semiconductor manufacturing process has extremely high requirements for the flow control of gases and liquids, and manual diaphragm valves are used to control the flow of chemicals and gases. By opening and closing the valve, process parameters can be adjusted to ensure the stability and consistency of the production process.

[0003] During the semiconductor production process, many harmful chemicals are involved, and accidental opening of the valve may cause harm to the staff. Since the existing manual diaphragm valves do not have a locking mechanism, the handle of the manual diaphragm valve may be opened or closed at the wrong time due to accidental reasons during actual use. For example, when in use, if the manual diaphragm valve is not locked, it may be accidentally opened or closed, resulting in leakage of gas or liquid, posing a safety hazard. In addition, during the production process, the flow and pressure of the fluid need to be strictly controlled, so the opening and closing of the valve need to be strictly restricted to ensure product quality and consistency; when dealing with different chemicals, it is also necessary to ensure that the valve is in a locked state when not needed, which can prevent cross-contamination between different substances and ensure product purity.

[0004] Therefore, it is necessary to design a manual diaphragm valve with a locking function to solve the above problems. Summary of the Utility Model

[0005] In view of this, to overcome the defects of the prior art, the present utility model provides a manual diaphragm valve with a locking function, effectively solving the problems of the existing manual diaphragm valve, such as the lack of a locking mechanism resulting in safety hazards, inability to strictly control fluid flow and pressure, cross-contamination between different substances, and reduced product purity.

[0006] A manual diaphragm valve with a locking function provided by the present utility model, wherein the manual diaphragm valve with a locking function includes a diaphragm valve body and a locking mechanism. The locking mechanism is connected to the diaphragm valve body, and the locking mechanism can switch between an unlocked state and a locked state so that the diaphragm valve body can be unlocked or locked. The locking mechanism includes an elastic locking assembly, a sliding locking member, and an abutting and positioning assembly. The elastic locking assembly and the sliding locking member are arranged on the handle of the diaphragm valve body, and the abutting and positioning assembly is connected to the diaphragm valve body. The elastic locking assembly and the abutting and positioning assembly are arranged facing each other. The sliding locking member includes an unlocking position and a locking position. When the locking mechanism is in the unlocked state, the elastic locking assembly passes through the unlocking position, and the elastic locking assembly and the abutting and positioning assembly are separated. When the locking mechanism is in the locked state, the elastic locking assembly passes through the locking position, and the elastic locking assembly abuts against the abutting and positioning assembly.

[0007] Preferably, the elastic locking assembly includes a fixed rod, a displacement rod, and a spring connecting member. The fixed rod is fixedly arranged on the handle, the displacement rod is connected to the fixed rod through the spring connecting member, a displacement gap is formed between the first end of the displacement rod and the fixed rod, and an abutting steel ball is arranged at the second end of the displacement rod.

[0008] Preferably, the displacement rod is sleeved with a first card and a second card, and the first card, the second card, and the abutting steel ball are arranged from top to bottom in sequence. The first end of the spring connecting member is arranged on the fixed rod, the second end of the spring connecting member is arranged on the first card, the sliding locking member is sleeved on the displacement rod, and the sliding locking member can abut against the first card and the second card.

[0009] Preferably, the elastic locking assembly further includes a limiting block. The limiting block is arranged on the end face of the handle facing the abutting and positioning assembly. The limiting block is provided with a limiting hole, and the abutting steel ball can partially pass through the limiting hole.

[0010] Preferably, the displacement rod is further sleeved with a locking piece. The diameter of the locking piece is larger than the diameter of the displacement rod. The unlocking position and the locking position of the sliding locking member are communicated with each other. The diameter of the unlocking position corresponds to the diameter of the locking piece, and the diameter of the locking position corresponds to the diameter of the displacement rod.

[0011] Preferably, the handle of the diaphragm valve body is provided with a through hole, the sliding locking member is slidably passed through the through hole, and a hanging hole is arranged at the end of the sliding locking member.

[0012] Preferably, the abutting clamping component includes a support rod, and an abutting concave portion is formed at an end of the support rod, and the abutting concave portion corresponds to the abutting steel ball.

[0013] Preferably, the abutting clamping component further includes a connecting plate, one end of the connecting plate is connected to the support rod, and the other end of the connecting plate is connected to the diaphragm valve body.

[0014] Preferably, the abutting clamping component further includes a transmission part, the transmission part is arranged inside the support rod, the transmission part includes a transmission contact rod, a deformation sheet and a transmission sheet, the transmission contact rod is arranged inside the support rod, a first end of the transmission contact rod extends out of the abutting concave portion, a second end of the transmission contact rod abuts against the deformation sheet, the transmission contact rod, the deformation sheet and the transmission sheet are arranged in sequence from top to bottom, and a deformation gap is arranged between the deformation sheet and the transmission sheet; when the locking mechanism is in the locked state, the abutting steel ball abuts against the first end of the transmission contact rod, and the abutting steel ball drives the transmission contact rod to move so that the deformation sheet deforms and abuts against the transmission sheet.

[0015] Preferably, the abutting clamping component further includes a return spring and a transmission cylinder, the return spring sleeves the transmission contact rod, the transmission cylinder abuts against the transmission sheet, and the inside of the transmission cylinder is hollow so that the middle part of the transmission sheet is exposed.

[0016] According to the manual diaphragm valve with a locking function of the present invention, through the cooperation of the diaphragm valve body and the locking mechanism, the locking mechanism can be switched between an unlocked state and a locked state so that the diaphragm valve body can be unlocked or locked. When the diaphragm valve body is locked, it can only be in an open or closed state to meet the current use conditions. When the diaphragm valve body is unlocked, it can be freely opened or closed. The manual diaphragm valve with a locking function can ensure the safety in the semiconductor production process, avoid flow leakage caused by accidental touch, can also ensure that the flow and pressure of the fluid are strictly controlled, ensure the quality and consistency of the produced products, and can also avoid cross-contamination between different substances and ensure the purity of the products.

[0017] In order to make the above objects, features and advantages of the present application more obvious and understandable, the following specifically gives preferred embodiments and cooperates with the attached drawings to make detailed descriptions as follows. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0019] Figure 1 Schematic structural diagram of a manual diaphragm valve with a locking function according to an embodiment of the present invention in an unlocked state;

[0020] Figure 2 Partial cross-sectional view of a manual diaphragm valve with a locking function according to an embodiment of the present invention in an unlocked state;

[0021] Figure 3 Schematic structural diagram of a manual diaphragm valve with a locking function according to an embodiment of the present invention in a locked state;

[0022] Figure 4 Partial cross-sectional view of a manual diaphragm valve with a locking function according to an embodiment of the present invention in a locked state;

[0023] Figure 5 Schematic structural diagram of a sliding locking member according to an embodiment of the present invention;

[0024] Figure 6 Partial structural diagram of a manual diaphragm valve with a locking function according to an embodiment of the present invention;

[0025] Figure 7 Partial structural diagram of a locking mechanism according to an embodiment of the present invention in an unlocked state;

[0026] Figure 8 Partial structural diagram of a locking mechanism according to an embodiment of the present invention in a locked state.

[0027] Reference numerals: 1 - diaphragm valve body; 101 - handle; 2 - locking mechanism; 301 - fixing rod; 302 - displacement rod; 303 - spring connecting piece; 304 - abutting steel ball; 305 - first card; 306 - second card; 307 - limiting block; 308 - limiting hole; 309 - locking piece; 4 - sliding locking member; 401 - unlocking position; 402 - locking position; 403 - hanging hole; 501 - support rod; 502 - abutting concave portion; 503 - connecting plate; 504 - transmission contact rod; 505 - deformation piece; 506 - transmission piece; 507 - return spring; 508 - transmission cylinder. Detailed implementation manners

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part rather than all of the embodiments of this application. Components of the embodiments of this application usually described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative efforts fall within the scope of protection of this application.

[0029] In the description of the embodiments of this application, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of this application are usually placed during use. It is only for the convenience of describing this application 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 to this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be understood as indicating or implying relative importance.

[0030] In addition, terms such as "horizontal" and "vertical" do not mean that the components are required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0031] In the description of the embodiments of this application, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "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 directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

[0032] According to a manual diaphragm valve with a locking function provided by the present utility model, as Figures 1 to 6 shown, this manual diaphragm valve with a locking function is used on the pipeline for semiconductor production and can control the opening and closing of the pipeline. This manual diaphragm valve with a locking function includes a diaphragm valve body 1 and a locking mechanism 2.

[0033] In the following description, reference will be made to Figures 1 to 6Specifically describe the detailed structures of the diaphragm valve body 1 and the locking mechanism 2 of the manual diaphragm valve with a locking function.

[0034] As Figures 1 to 4 shown, in the embodiment, the diaphragm valve body 1 can be, for example, a diaphragm valve commonly used in the prior art, and its structure, connection method, and working principle are all known to those skilled in the art, so they will not be elaborated here. The locking mechanism 2 can lock or unlock the diaphragm valve body 1. When locked, the diaphragm valve body 1 cannot be opened or closed, while when unlocked, the diaphragm valve body 1 can be freely opened or closed. Specifically, the locking mechanism 2 is connected to the diaphragm valve body 1, and the locking mechanism 2 can switch between the unlocked state and the locked state so that the diaphragm valve body 1 can be unlocked or locked.

[0035] The diaphragm valve body 1 can include a handle 101. By rotating the handle 101, the diaphragm valve body 1 can be opened or closed. The locking mechanism 2 is connected to the handle 101 of the diaphragm valve body 1, and the rotation of the handle 101 is restricted to lock or unlock the diaphragm valve body 1. The handle 101 can be a common rotating part. The difference is that: a mounting position for the locking mechanism 2 extends outward from the side of the handle 101.

[0036] The locking mechanism 2 can include an elastic locking assembly, a sliding locking part 4, and an abutting and positioning assembly. The elastic locking assembly and the sliding locking part 4 are arranged on the handle 101 of the diaphragm valve body 1, and the abutting and positioning assembly is connected to the diaphragm valve body 1. The elastic locking assembly and the abutting and positioning assembly are arranged facing each other. The elastic locking assembly can expand and contract under the influence of elastic force and can abut or separate from the abutting and positioning assembly. The sliding locking part 4 includes an unlocking position 401 and a locking position 402. When the locking mechanism 2 is in the unlocked state, the elastic locking assembly passes through the unlocking position 401, and the elastic locking assembly and the abutting and positioning assembly are separated. At this time, the elastic locking assembly can move freely, and the handle 101 can also rotate freely. When the locking mechanism 2 is in the locked state, the elastic locking assembly passes through the locking position 402, the elastic locking assembly abuts against the abutting and positioning assembly, the elastic locking assembly is locked by the sliding locking part 4, the elastic locking assembly is located outside the handle 101 and abuts against the abutting and positioning assembly. At this time, the elastic locking assembly cannot move freely, and the handle 101 is also restricted from moving, thereby locking the diaphragm valve body 1 and making the diaphragm valve body 1 only able to be in the open or closed state and unable to change the state.

[0037] The manual diaphragm valve with a locking function, through the cooperation of the diaphragm valve body 1 and the locking mechanism 2, can switch between the unlocked state and the locked state so that the diaphragm valve body 1 can be unlocked or locked. When the diaphragm valve body 1 is locked, it can only be in the open or closed state to meet the current usage conditions. When the diaphragm valve body 1 is unlocked, it can be freely opened or closed. This manual diaphragm valve with a locking function can ensure the safety during the semiconductor production process, avoid flow leakage caused by accidental touch, and can also ensure that the fluid flow and pressure are strictly controlled, guarantee the quality and consistency of the produced products, and can also avoid cross-contamination between different substances to ensure the purity of the products.

[0038] Preferably, as Figures 1 to 4 and Figure 6 shown, in the embodiment, the elastic locking assembly may include a fixed rod 301, a displacement rod 302 and a spring connecting piece 303. The fixed rod 301 is fixedly arranged on the handle 101. The displacement rod 302 is connected to the fixed rod 301 through the spring connecting piece 303. A displacement gap is formed between the first end of the displacement rod 302 and the fixed rod 301. The displacement rod 302 can move up and down in the vertical direction, and the displacement gap is the movement range of the displacement rod 302. A contact steel ball 304 is arranged at the second end of the displacement rod 302. Driven by the displacement rod 302, the contact steel ball 304 can move up and down (here, up and down refer to up and down as in Figure 2 , Figure 4 and Figure 6 ). When the locking mechanism 2 is in the unlocked state, the contact steel ball 304 moves upward due to external force (such as the rotational force applied by the user), and the contact steel ball 304 is separated from the contact clamping component.

[0039] Preferably, as Figures 1 to 4 and Figures 6 to 8 shown, in the embodiment, the displacement rod 302 is sleeved with a first card 305 and a second card 306. The first card 305, the second card 306 and the contact steel ball 304 are arranged from top to bottom in sequence (here, up and down refer to up and down as in Figure 2 , Figure 4 and Figure 6 ). The first end of the spring connecting piece 303 is arranged on the fixed rod 301, the second end of the spring connecting piece 303 is arranged on the first card 305. The sliding locking part 4 is sleeved on the displacement rod 302, and the sliding locking part 4 can abut against the first card 305 and the second card 306. The first card 305 and the second card 306 are respectively used to fix the spring connecting piece 303 and the contact steel ball 304. As Figure 7As shown, when the locking mechanism 2 is in the unlocked state, the sliding latch 4 can abut against the second card 306; when the locking mechanism 2 is in the locked state, the sliding latch 4 can abut against the first card 305.

[0040] Preferably, as Figure 2 , Figure 4 and Figure 6 shown, in the embodiment, the elastic locking assembly may further include a limiting block 307. The limiting block 307 is arranged on the end face of the handle 101 facing the abutting and positioning assembly. The limiting block 307 can be connected to the handle 101 by a pin or a connecting bolt. The limiting block 307 is provided with a limiting hole 308, and the abutting steel ball 304 can partially pass through the limiting hole 308. The limiting hole 308 can be formed as an approximately frustum-shaped hole, and the size of the frustum-shaped hole is smaller than the diameter of the abutting steel ball 304, so that the abutting steel ball 304 can partially protrude from the limiting block 307 (as Figure 4 shown) to achieve locking.

[0041] Preferably, as Figure 2 , Figure 4 and Figure 6 shown, in the embodiment, a locking piece 309 is further sleeved on the displacement rod 302. The diameter of the locking piece 309 is larger than the diameter of the displacement rod 302, but the diameter of the locking piece 309 is smaller than the diameters of the first card 305 and the second card 306.

[0042] The unlocking position 401 and the locking position 402 of the sliding latch 4 are communicated with each other. The diameter of the unlocking position 401 corresponds to the diameter of the locking position 402, and the diameter of the locking position 402 corresponds to the diameter of the displacement rod 302. When the locking mechanism 2 is in the unlocked state, the displacement rod 302 and the locking piece 309 can pass through the unlocking position 401 of the sliding latch 4, so that the displacement rod 302 can move up and down. When the locking mechanism 2 is in the locked state, the displacement rod 302 can pass through the locking position 402 of the sliding latch 4 to lock the displacement rod 302.

[0043] Preferably, as Figure 1 , Figure 3 and Figure 5 shown, in the embodiment, the handle 101 of the diaphragm valve body 1 is provided with a through hole, and the sliding latch 4 is slidably passed through the through hole. A hanging hole 403 is arranged at the end of the sliding latch 4. When the locking mechanism 2 is in the locked state, the hanging hole 403 of the sliding latch 4 is outside the handle 101, and the user can install an additional locking piece such as a lock head through the hanging hole 403, so that only specific personnel can open the hung lock head, and then unlock the locking mechanism 2.

[0044] Preferably, as Figure 2 andFigure 4 As shown, in the embodiment, the abutting clamping component may include a support rod 501. An abutting recess 502 is formed at the end of the support rod 501, and the abutting recess 502 corresponds to the abutting steel ball 304. The abutting recess 502 can be used to accommodate the abutting steel ball 304 to achieve the locking of the locking mechanism 2. In addition, since the abutting recess 502 is formed as a semi-spherical shape corresponding to the abutting steel ball 304, in the unlocked state, the abutting steel ball 304 can be directly separated from the abutting recess 502 by applying an external force.

[0045] In addition, it should also be noted that Figure 2 To facilitate showing the unlocked state, the abutting steel ball 304 is separated from the abutting recess 502. At this time, the spring connector 303 is in a compressed state. In actual use, due to the influence of gravity, the abutting steel ball 304 is always in the state where Figure 4 as shown, the abutting steel ball 304 abuts against the abutting recess 502, and the spring connector 303 is also in an extended state. Only when an external force is applied, the abutting steel ball 304 and the abutting recess 502 will slide relative to each other and compress the spring connector 303, so that the abutting steel ball 304 is separated from the abutting recess 502.

[0046] Preferably, as Figure 1 , Figure 3 and Figure 6 shown, in the embodiment, the abutting clamping component may further include a connecting plate 503. One end of the connecting plate 503 is connected to the support rod 501, and the other end of the connecting plate 503 is connected to the diaphragm valve body 1. The support rod 501 can be fixedly connected to the connecting plate 503 through a connecting bolt.

[0047] Preferably, as Figures 1 to 6 shown, in the embodiment, the abutting clamping component may further include a transmission part. The transmission part can be connected to the outside and is used to transmit the state of the diaphragm valve body 1 at this time (in the unlocked state or the locked state).

[0048] The transmission part is arranged inside the support rod 501. The transmission part may include a transmission contact rod 504, a deformation piece 505 and a transmission piece 506. The transmission contact rod 504 is arranged inside the support rod 501. The first end of the transmission contact rod 504 extends out of the abutting recess 502, and the second end of the transmission contact rod 504 abuts against the deformation piece 505. The transmission contact rod 504, the deformation piece 505 and the transmission piece 506 are arranged in sequence from top to bottom.

[0049] When the locking mechanism 2 is in the unlocked state, a deformation gap is provided between the deformation piece 505 and the transmission piece 506; when the locking mechanism 2 is in the locked state, the abutting steel ball 304 abuts against the first end of the transmission contact rod 504, and the abutting steel ball 304 drives the transmission contact rod 504 to move so that the deformation piece 505 deforms and abuts against the transmission piece 506.

[0050] Preferably, as Figures 1 to 6 shown, in the embodiment, the abutting clamping component may further include a return spring 507 and a transmission cylinder 508. The return spring 507 is sleeved on the transmission contact rod 504. The transmission cylinder 508 abuts against the transmission piece 506. The inside of the transmission cylinder 508 is hollow so that the middle part of the transmission piece 506 is exposed. The external connecting wire can be connected to the transmission piece 506 through the transmission cylinder 508. When the deformation piece 505 abuts against the transmission piece 506, current can be transmitted at this time. The external receiver can receive the electrical signal, indicating that it is in the locked state at this time. If the external receiver cannot receive the electrical signal, it is in the unlocked state at this time.

[0051] The usage method of the manually operated diaphragm valve with a locking function is as follows: during normal use, the manually operated diaphragm valve with a locking function is in the unlocked state as Figure 1 shown, and the handle 101 can rotate freely so that the diaphragm valve body 1 can be freely opened or closed. When restricted use is required, the manually operated diaphragm valve with a locking function is in the locked state as Figure 3 shown. The hanging hole 403 of the sliding locking part 4 is located outside the handle 101. The abutting steel ball 304 abuts against the abutting concave part 502. The sliding locking part 4 locks the displacement rod 302. The displacement rod 302 cannot move. At this time, the abutting steel ball 304 is clamped in the abutting concave part 502, and the handle 101 cannot rotate. When unlocking is required, push the sliding locking part 4 so that the unlocking position 401 of the sliding locking part 4 penetrates through the displacement rod 302, and then apply an external force to move the handle 101.

[0052] Through the cooperation of the diaphragm valve body and the locking mechanism, the manually operated diaphragm valve with a locking function can switch between the unlocked state and the locked state so that the diaphragm valve body can be unlocked or locked. When the diaphragm valve body is locked, it can only be in the open or closed state to meet the current usage conditions. When the diaphragm valve body is unlocked, it can be freely opened or closed. The manually operated diaphragm valve with a locking function can ensure the safety during the semiconductor production process, avoid flow leakage caused by accidental touch, can also ensure that the fluid flow and pressure are strictly controlled, ensure the quality and consistency of the produced products, and can also avoid cross-contamination between different substances to ensure the purity of the products.

[0053] Finally, it should be noted that the above-described embodiments are only specific implementation manners of the present application, used to illustrate the technical solutions of the present application, rather than limiting it. The protection scope of the present application is not limited thereto. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: Any person skilled in the art within the technical scope disclosed by the present application can still modify the technical solutions recorded in the foregoing embodiments or can easily think of changes, or perform equivalent replacements on some of the technical features; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A manual diaphragm valve with a locking function, characterized in that, The manual diaphragm valve with a locking function includes a diaphragm valve body and a locking mechanism. The locking mechanism is connected to the diaphragm valve body, and the locking mechanism can be switched between an unlocked state and a locked state so that the diaphragm valve body can be unlocked or locked; The locking mechanism includes an elastic locking assembly, a sliding locking part, and an abutting positioning assembly. The elastic locking assembly and the sliding locking part are arranged on the handle of the diaphragm valve body. The abutting positioning assembly is connected to the diaphragm valve body. The elastic locking assembly and the abutting positioning assembly are arranged facing each other. The sliding locking part includes an unlocking position and a locking position. When the locking mechanism is in the unlocked state, the elastic locking assembly passes through the unlocking position, and the elastic locking assembly and the abutting positioning assembly are separated; When the locking mechanism is in the locked state, the elastic locking assembly passes through the locking position, and the elastic locking assembly abuts against the abutting positioning assembly.

2. The manual diaphragm valve with a locking function according to claim 1, characterized in that, The elastic locking assembly includes a fixed rod, a displacement rod, and a spring connecting piece. The fixed rod is fixedly arranged on the handle. The displacement rod is connected to the fixed rod through the spring connecting piece. A displacement gap is formed between the first end of the displacement rod and the fixed rod. Abutting steel balls are arranged at the second end of the displacement rod.

3. The manual diaphragm valve with a locking function according to claim 2, characterized in that, The displacement rod is sleeved with a first card and a second card. The first card, the second card, and the abutting steel balls are arranged in sequence from top to bottom. The first end of the spring connecting piece is arranged on the fixed rod, and the second end of the spring connecting piece is arranged on the first card. The sliding locking part is sleeved on the displacement rod, and the sliding locking part can abut against the first card and the second card.

4. The manually operated diaphragm valve with a locking function according to claim 2, characterized in that, The elastic locking assembly further includes a limiting block. The limiting block is arranged on the end face of the handle facing the abutting positioning assembly. The limiting block is provided with a limiting hole, and the abutting steel ball can partially pass through the limiting hole.

5. The manually operated diaphragm valve with a locking function according to claim 2, characterized in that, The displacement rod is also sleeved with a locking piece. The diameter of the locking piece is larger than the diameter of the displacement rod. The unlocking position and the locking position of the sliding locking part are communicated with each other. The diameter of the unlocking position corresponds to the diameter of the locking piece, and the diameter of the locking position corresponds to the diameter of the displacement rod.

6. The manual diaphragm valve with a locking function according to claim 1, characterized in that, The handle of the diaphragm valve body is provided with a through hole. The sliding locking part is slidably passed through the through hole, and a hanging hole is arranged at the end of the sliding locking part.

7. The manual diaphragm valve with a locking function according to claim 2, characterized in that, The abutting positioning assembly includes a support rod. An abutting concave part is formed at the end of the support rod. The abutting concave part corresponds to the abutting steel ball.

8. The manual diaphragm valve with a locking function according to claim 7, characterized in that, The abutting positioning assembly further includes a connecting plate. One end of the connecting plate is connected to the support rod, and the other end of the connecting plate is connected to the diaphragm valve body.

9. The manual diaphragm valve with a locking function according to claim 7, characterized in that, The abutting clamping component further includes a transmission part, the transmission part is arranged inside the support rod, the transmission part includes a transmission contact rod, a deformation piece and a transmission piece, the transmission contact rod is arranged inside the support rod, the first end of the transmission contact rod extends out of the abutting concave part, the second end of the transmission contact rod abuts against the deformation piece, the transmission contact rod, the deformation piece and the transmission piece are arranged in sequence from top to bottom, and a deformation gap is arranged between the deformation piece and the transmission piece; When the locking mechanism is in the locked state, the abutting steel ball abuts against the first end of the transmission contact rod, and the abutting steel ball drives the transmission contact rod to move so that the deformation piece deforms and abuts against the transmission piece.

10. The manual diaphragm valve with a locking function according to claim 9, characterized in that, The abutting clamping component further includes a return spring and a transmission cylinder, the return spring sleeves the transmission contact rod, the transmission cylinder abuts against the transmission piece, and the inside of the transmission cylinder is hollow so that the middle part of the transmission piece is exposed.

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