阅读说明：本技术 一种气密性好的隔膜阀 (Diaphragm valve with good air tightness ) 是由 赵凯 于 2020-05-08 设计创作，主要内容包括：本发明公开了一种气密性好的隔膜阀,包括上隔膜阀主体、下隔膜阀主体和隔膜,所述下隔膜阀主体前后贯通,所述隔膜的中部设置有运动装置,所述运动装置的下部设置有阀芯,所述运动装置的上部设置有控制装置,所述控制装置的上部设置有旋转丝杆,所述运动装置的上部设置有第一磁铁,所述运动装置的下部设置有第二磁铁,所述控制装置包括滑动装置,所述上隔膜阀主体的内部设置有滑道,所述滑动装置的内部设置有转动装置,所述转动装置的两端设置有所述第二磁铁,所述转动装置上设置有控制杆。本发明工作效率高,气密性好,具有多种方式完成工作,减压强,具有更高的应用前景。(The invention discloses a diaphragm valve with good air tightness, which comprises an upper diaphragm valve main body, a lower diaphragm valve main body and a diaphragm, wherein the lower diaphragm valve main body is communicated from front to back, a movement device is arranged in the middle of the diaphragm, a valve core is arranged at the lower part of the movement device, a control device is arranged at the upper part of the movement device, a rotary screw rod is arranged at the upper part of the control device, a first magnet is arranged at the upper part of the movement device, a second magnet is arranged at the lower part of the movement device, the control device comprises a sliding device, a slide way is arranged in the upper diaphragm valve main body, a rotating device is arranged in the sliding device, the second magnet is arranged at two ends of the rotating device, and a control rod is arranged on the. The invention has high working efficiency, good air tightness, strong decompression and higher application prospect, and can complete the work in various modes.)

1. The diaphragm valve with good air tightness comprises an upper diaphragm valve main body (1), a lower diaphragm valve main body (2) and a diaphragm (3), and is characterized in that the lower diaphragm valve main body (2) is communicated from front to back, the diaphragm (3) is arranged between the upper diaphragm valve main body (1) and the lower diaphragm valve main body (2), a moving device (31) is arranged in the middle of the diaphragm (3), a valve core (32) is arranged at the lower part of the moving device (31), the valve core (32) is connected with the moving device (31), the valve core (32) can seal a front channel and a back channel of the lower diaphragm valve main body (2) through up-and-down movement, a control device (4) is arranged at the upper part of the moving device (31), the control device (4) is arranged inside the upper diaphragm valve main body (1), and a rotary screw rod (41) is arranged at the upper part of, rotatory lead screw (41) are connected with last diaphragm valve main part (1) through the bolt, the upper portion of telecontrol equipment (31) is provided with first magnet (33), the lower part of telecontrol equipment (31) is provided with second magnet (42), controlling means (4) include slider (43), the inside of going up diaphragm valve main part (1) is provided with slide (11), the both ends of slider (43) set up the inside at slide (11), the inside of slider (43) is provided with rotating device (44), the both ends of rotating device (44) are provided with second magnet (42), be provided with control lever (45) on rotating device (44).

2. A diaphragm valve with good airtightness according to claim 1, wherein the slide block (43) has a semicircular shape.

3. A diaphragm valve with good airtightness according to claim 1, wherein a plurality of second magnets (42) are provided on the control device (4) and a plurality of first magnets (33) are provided on the moving device (31), the second magnets (42) are provided on both upper and lower ends of the rotating device (44), and the first magnets (33) are provided on the upper end of the moving device (31).

4. A diaphragm valve with good gas tightness according to claim 1, characterized in that the moving means (31) and the diaphragm (3) are made of rubber material, and the valve core (32) is made of metal material.

5. The diaphragm valve with good air tightness according to claim 1, wherein a sliding cavity (21) is arranged in the middle of the lower diaphragm valve body (2), the valve core (32) slides in the sliding cavity (21), a through hole (34) corresponding to the sliding cavity (21) is arranged on the sliding device (43), a pressure chamber (22) is arranged at the lower part of the sliding cavity (21), and the pressure chamber (22) is communicated with the lower diaphragm valve body (2).

6. A diaphragm valve with good gas tightness according to claim 1, wherein a rotating rod (46) is arranged on the control rod (45).

7. A diaphragm valve with good air tightness according to claim 1, wherein the upper part of the upper diaphragm valve body (1) is provided with a closing device (12), and the rotary screw rod (41) is connected with the closing device (12) through a bolt.

8. A diaphragm valve with good gas tightness according to claim 1, characterized in that the valve core (32) and the sliding means (43) are made of copper.

Technical Field

The invention relates to the technical field of diaphragm valves, in particular to a diaphragm valve with good air tightness.

Background

The diaphragm valve is a stop valve which uses a diaphragm as an opening and closing piece to close a flow passage, cut off fluid and separate an inner cavity of a valve body from an inner cavity of a valve cover. The diaphragm is made of elastic, corrosion-resistant and impermeable materials such as rubber and plastics. The valve body is made of multipurpose plastic, glass fiber reinforced plastic, ceramic or metal lining rubber material. Simple structure, better sealing and corrosion resistance and small fluid resistance. Diaphragm valves used for fluid control have a gas flow or a liquid flow through the diaphragm valve. Where three or more passageways open into the valve chamber, each passageway is separated from the remaining passageways to achieve, for example, an 3/2-way valve. Valve seats in the form of a net, in particular a linear net, are formed between directly adjacent passage openings. Diaphragm valves used for fluid control have a gas flow or a liquid flow through the diaphragm valve. In the case where three or more passages open into the valve chamber, each passage is separated from the remaining passages to, for example, realize a passage valve. Usually, valve seats in the form of a net, in particular a linear net, are formed between directly adjacent passage openings. The valves can be used for controlling the on-off of flowing liquid, and can be divided into a plurality of types according to different control structures and control purposes, wherein the structural form of a diaphragm valve is quite different from that of a common valve, and the diaphragm valve controls the movement of fluid by means of a soft rubber film or a plastic film. The diaphragm valve can be completely separated from the liquid flowing in the valve using a control structure of the valve. However, when the diaphragm valve is used specifically, when the diaphragm valve blocks flowing liquid in the valve body, the diaphragm valve is completed by rigidly pressing the rubber membrane, so that although the flow passage of the liquid can be completely blocked, once the liquid pressure is too high, the rubber membrane is easily broken, so that the diaphragm valve is damaged, and in addition, in order to facilitate the pressing and pressing of the membrane during use of the diaphragm valve, the distance between the membrane and the closed end of the valve is usually small, so that the water flow passage is small, and pressure drop can be caused when the diaphragm valve is opened. In view of the related technical problems, no effective solution has been proposed at present.

Disclosure of Invention

Aiming at the problems in the related art, the invention provides a diaphragm valve with good air tightness, so as to overcome the technical problems in the prior related art.

The technical scheme of the invention is realized as follows:

a diaphragm valve with good air tightness comprises an upper diaphragm valve main body 1, a lower diaphragm valve main body 2 and a diaphragm 3, wherein the lower diaphragm valve main body 2 is communicated in the front and back direction, the diaphragm 3 is arranged between the upper diaphragm valve main body 1 and the lower diaphragm valve main body 2, a moving device 31 is arranged in the middle of the diaphragm 3, a valve core 32 is arranged at the lower part of the moving device 31, the valve core 32 is connected with the moving device 31, the valve core 32 can seal a front channel and a back channel of the lower diaphragm valve main body 2 through up-and-down movement, a control device 4 is arranged at the upper part of the moving device 31, the control device 4 is arranged in the upper diaphragm valve main body 1, a rotating lead screw 41 is arranged at the upper part of the control device 4, the rotating lead screw 41 is connected with the upper diaphragm valve main body 1 through a bolt, a first magnet 33 is arranged at the, the control device 4 comprises a sliding device 43, the inside of the upper diaphragm valve main body 1 is provided with a slideway 11, two ends of the sliding device 43 are arranged inside the slideway 11, the inside of the sliding device 43 is provided with a rotating device 44, two ends of the rotating device 44 are provided with the second magnet 42, and the rotating device 44 is provided with a control rod 45.

Further, the sliding device 43 has a semicircular shape.

Furthermore, a plurality of second magnets 42 are arranged on the control device 4 and the plurality of first magnets 33 are arranged on the moving device 31, the second magnets 42 are arranged at the upper end and the lower end of the rotating device 44, and the first magnets 33 are arranged at the upper end of the moving device 31.

Further, the moving device 31 and the diaphragm 3 are made of rubber materials, and the valve core 32 is made of metal materials.

Further, a sliding cavity 21 is arranged in the middle of the lower diaphragm valve body 2, the valve element 32 slides in the sliding cavity 21, a through hole 34 corresponding to the sliding cavity 21 is arranged on the sliding device 43, a pressure chamber 22 is arranged at the lower part of the sliding cavity 21, and the pressure chamber 22 is communicated with the lower diaphragm valve body 2.

Further, a rotating rod 46 is disposed on the control rod 45.

Further, a closing device 12 is arranged at the upper part of the upper diaphragm valve body 1, and the rotating screw rod 41 is connected with the closing device 12 through a bolt.

Further, the valve core 32 and the sliding device 43 are made of copper.

The invention has the beneficial effects that: when the diaphragm valve works, the diaphragm can completely isolate the upper diaphragm valve main body from the lower diaphragm valve main body, and when the diaphragm valve is used, the diaphragm can be driven by the control device to press the diaphragm downwards like a common valve through the rotary screw rod in the upper diaphragm valve main body; meanwhile, as the control device in the upper diaphragm valve body and the moving device on the diaphragm are respectively provided with the first magnet and the first magnet, when the second magnets on the control device and the control device are opposite to the same magnetic pole of the first magnet on the moving device, the control device and the moving device repel each other due to the action of magnetic force, so that the valve core is elastically pressed, the valve is opened, and when the valve core moves up and down, the diaphragm and the control device can be completely out of contact, the service life of the valve is longer, and when the lower diaphragm valve body is subjected to higher water pressure, the valve core can be upwards elastically jacked up, the valve is opened, the pressure is relieved, and the valve has the function of a pressure relief valve. And the rotating device in the control device can rotate in the sliding device, so that the second magnet on the upper part in the rotating device rotates to the lower part, the opposite magnetic poles of the second magnet in the control device and the first magnet in the moving device are opposite, the control device and the moving device are attracted together by magnetic force, the moving device and the valve core are conveniently lifted upwards to a greater extent, the valve core has a greater moving amount in the lower diaphragm valve main body, the valve can have a larger-area connecting port in the design process, and the pressure difference of the water inlet and the water outlet of the valve is smaller.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a diaphragm valve with good air tightness according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a diaphragm valve with good air tightness according to an embodiment of the present invention.

In the figure:

1. an upper diaphragm valve body; 11. a slideway; 12. a closure device; 2. a lower diaphragm valve body; 21. a sliding cavity; 22. a pressure chamber; 3. a diaphragm; 31. a motion device; 32. a valve core; 33. a first magnet; 34. a through hole; 4. a control device; 41. rotating the screw rod; 42. a second magnet; 43. a sliding device; 44. a rotating device; 45. a control lever; 46. the rod is rotated.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.

According to an embodiment of the present invention, a diaphragm valve having good airtightness is provided.

As shown in fig. 1-2, a diaphragm valve with good air tightness according to an embodiment of the present invention includes an upper diaphragm valve body 1, a lower diaphragm valve body 2, and a diaphragm 3, wherein the lower diaphragm valve body 2 is penetrated in front and back, the diaphragm 3 is disposed between the upper diaphragm valve body 1 and the lower diaphragm valve body 2, a movement device 31 is disposed in the middle of the diaphragm 3, a valve core 32 is disposed in the lower portion of the movement device 31, the valve core 32 is connected to the movement device 31, the valve core 32 can close a front and back channel of the lower diaphragm valve body 2 by moving up and down, a control device 4 is disposed in the upper portion of the movement device 31, the control device 4 is disposed in the upper diaphragm valve body 1, a rotary screw rod 41 is disposed in the upper portion of the control device 4, the rotary screw rod 41 is connected to the upper diaphragm valve body 1 by a bolt, a first magnet 33 is, the lower part of the moving device 31 is provided with a second magnet 42, the control device 4 comprises a sliding device 43, the inside of the upper diaphragm valve body 1 is provided with a slide rail 11, two ends of the sliding device 43 are arranged inside the slide rail 11, the inside of the sliding device 43 is provided with a rotating device 44, two ends of the rotating device 44 are provided with the second magnet 42, the rotating device 44 is provided with a control rod 45, the sliding device 43 is in a semicircular shape, the second magnets 42 on the control device 4 and the first magnets 33 on the moving device 31 are provided with a plurality of magnets, the second magnets 42 are arranged at the upper end and the lower end of the rotating device 44, the first magnets 33 are arranged at the upper end of the moving device 31, the moving device 31 and the diaphragm 3 are made of rubber materials, the valve core 32 is made of metal materials, and the middle part of the lower diaphragm valve body 2 is provided with a sliding cavity 21, the valve core 32 slides in the sliding cavity 21, the sliding device 43 is provided with a through hole 34 corresponding to the sliding cavity 21, the lower part of the sliding cavity 21 is provided with a pressure cavity 22, the pressure cavity 22 is communicated with the lower diaphragm valve main body 2, the control rod 45 is provided with a rotating rod 46, the upper part of the upper diaphragm valve main body 1 is provided with a sealing device 12, the rotating screw rod 41 is connected with the sealing device 12 through a bolt, and the valve core 32 and the sliding device 43 are made of copper materials.

In this embodiment, the diaphragm valve with good air tightness includes an upper diaphragm valve body 1, a lower diaphragm valve body 2, and a diaphragm 3, the lower diaphragm valve body 2 is through from front to back, and the diaphragm 3 is disposed between the upper diaphragm valve body 1 and the lower diaphragm valve body 2 and can move up and down in a deforming manner.

When the diaphragm valve is used, the diaphragm 3 can completely isolate the upper diaphragm valve main body 1 from the lower diaphragm valve main body 2, and when the valve is used, the control device 4 is driven by the rotating screw rod 41 in the upper diaphragm valve main body 1 to press the diaphragm 3 downwards like a common valve; meanwhile, as the second magnet 42 and the first magnet 33 are arranged on the control device 4 in the upper diaphragm valve body 1 and the moving device 31 on the diaphragm 3, when the second magnet 42 on the control device 4 and the moving device 31 are opposite to the same magnetic pole of the first magnet 33 on the moving device 31, the control device 4 and the moving device 31 are repelled by the magnetic force, as shown in fig. 1, and the valve core 32 is elastically pressed, so that the valve is opened. Since the magnetic force does not need to contact each other, the diaphragm 3 and the control device 4 can be completely out of contact when the valve core 32 moves up, so that the service life of the valve is longer.

In this embodiment, the sliding device 44 in the control device 4 can rotate in the sliding device 43, so as to rotate the second magnet 42 at the upper part in the sliding device 44 to the lower part, as shown in fig. 2, so that the second magnet 42 in the control block is opposite to the first magnet 33 in the moving device 31, and the control device 4 and the moving device 31 are attracted together by magnetic force, so as to facilitate lifting up the moving device 31 and the valve core 32 to a greater extent, so that the valve core 32 has a greater moving amount in the lower diaphragm valve body 2, so that the valve can have a larger area of connection port during design, and the pressure difference between the valve inlet and the valve outlet is smaller. Therefore, the valve can complete the on-off of liquid by rotating the rotary screw rod 41 and the control rod 45, so that the valve can be opened and closed even if a light-on mode fails, and the safe use of the valve is realized.

In this embodiment, a plurality of second magnets 42 are disposed on the control device 4 and the plurality of first magnets 33 are disposed on the moving device 31, the second magnets 42 are uniformly distributed on the upper and lower planes of the rotating device 44, and the first magnets 33 are uniformly distributed on the upper plane of the moving device 31. The plurality of second magnets 42 and the first magnets 33 are designed to enable the stress of the control device 4 and the stress of the moving device 31 to be more balanced, and the overall opening and closing effect of the valve is better.

In this embodiment, the movement device 31 and the diaphragm 3 are integrally made of a rubber material, and the valve element 32 and the sliding device 43 are both made of a copper material. The movement device 31 is made integrally with the diaphragm 3, so that the number of parts is reduced, the valve is easier to assemble, the valve core 32 and the sliding device 43 are frequently rubbed during use, the two elements are made of copper materials, the wear resistance is better, and the service life of the valve is longer.

In this embodiment, in the assembly design of the lower diaphragm valve body 2 and the valve core 32, as shown in fig. 1 and 2, a cut-off structure is arranged in the middle of the lower diaphragm valve body 2 to separate the front and rear passages of the lower valve body, a vertical sliding cavity 21 is processed on a partition block in the middle of the lower diaphragm valve body 2, the valve core 32 is slidably assembled in the sliding cavity 21, the middle position of the sliding cavity 21 is communicated with the front and rear ends of the lower diaphragm valve body 2, and a through hole 34 corresponding to the middle through position of the sliding cavity 21 is processed on the sliding device 43; when the valve core 32 is pushed downwards, as shown in fig. 1, the through hole 34 is at a position right above the through hole of the sliding cavity 21, and the front and rear channels of the lower diaphragm valve body are communicated, so that the valve is opened. The lower part of the sliding cavity 21 is provided with a pressure cavity 22, and the pressure cavity 22 is communicated with a water delivery channel of the lower diaphragm valve main body 2. Therefore, the pressure in the pressure chamber 22 is the same as the pressure in the water inlet channel of the lower diaphragm valve main body 2, so that when the lower diaphragm valve main body 2 is subjected to a large water pressure, the valve core 32 can be elastically jacked upwards, the valve is opened, pressure relief is performed, and the valve has the function of a pressure relief valve. The valve is safer to use.

In this embodiment, a rotating rod 46 perpendicular to the control rod 45 is mounted on the control rod 45. So that the control rod 45 is conveniently axially rotated. The upper part of the upper diaphragm valve body 1 is provided with a detachable closing device 12, and the rotary screw rod 41 is in threaded connection with the closing device 12. Each part of the valve is easier to process and more convenient to assemble.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.