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CN-224229319-U - Circulation diaphragm valve

CN224229319UCN 224229319 UCN224229319 UCN 224229319UCN-224229319-U

Abstract

The utility model discloses a circulation diaphragm valve, which comprises a main body, a first channel, a second channel, a valve port, a diaphragm and an opening and closing driving mechanism, wherein the first channel, the second channel, the valve port, the diaphragm and the opening and closing driving mechanism are arranged on the main body, the first channel and the second channel are communicated through the valve port, a containing cavity is arranged on the position of the main body opposite to the valve port, the diaphragm comprises a core part and a deformation part, the opening and closing driving mechanism is connected with the core part and is used for driving the core part to move along the axial direction of the containing cavity so as to open and close a valve port, the deformation part is connected with the side wall of the containing cavity, the deformation part comprises a first deformation section and a second deformation section which are alternately arched into the containing cavity when the core part opens and closes the valve port, and an annular gradual change surface is formed between the core part and the opening and closing driving mechanism. The circular flow diaphragm valve has the advantages of reducing the weight, the volume, the occupied space and the like of an opening and closing driving mechanism.

Inventors

  • XIAO LIFENG
  • CHEN HONGWEI

Assignees

  • 楚天源创生物技术(长沙)有限公司

Dates

Publication Date
20260512
Application Date
20250519

Claims (10)

  1. 1. The circulation diaphragm valve comprises a main body (1), a first channel (2), a second channel (3), a valve port (4), a diaphragm (5) and an opening and closing driving mechanism (6) which are arranged on the main body (1), wherein the first channel (2) and the second channel (3) are communicated through the valve port (4), the circulation diaphragm valve is characterized in that a containing cavity (7) is arranged at the position of the main body (1) opposite to the valve port (4), the diaphragm (5) comprises a core part (51) and a deformation part (52), the opening and closing driving mechanism (6) is connected with the core part (51) and is used for driving the core part (51) to move along the axial direction of the containing cavity (7) to open and close a valve port (4), the deformation part (52) is connected with the side wall of the containing cavity (7), the deformation part (52) comprises a first deformation section (521) and a second deformation section (522) which alternately arch towards the inside of the containing cavity (7) when the core part (51) is opened and closed, and an annular gradual change surface (8) is formed between the core part (51) and the opening and the closing driving mechanism (6).
  2. 2. The circulating diaphragm valve according to claim 1, characterized in that the annular tapering surface (8) is formed at the outer periphery of the core (51) and is arranged axially in correspondence with the deformation portion (52) in the receiving chamber (7), a deformation chamber (9) communicating with the second channel (3) being formed between the annular tapering surface (8) and the deformation portion (52).
  3. 3. The circulation diaphragm valve according to claim 1, characterized in that the annular tapered surface (8) is a conical surface with a smaller top and a larger bottom.
  4. 4. The circulating diaphragm valve according to claim 2, characterized in that the core (51) is smaller than the accommodation chamber (7).
  5. 5. The circulating diaphragm valve according to claim 1, characterized in that the core (51), the receiving chamber (7) and the valve port (4) are coaxial, and the inner side surface of the receiving chamber (7) is cylindrical.
  6. 6. The circulating diaphragm valve according to claim 1, characterized in that the outer periphery of the deformation portion (52) is provided with a peripheral edge portion (53), and the peripheral edge portion (53) is bonded to an outer end surface (71) of the accommodation chamber (7).
  7. 7. The circulating diaphragm valve according to claim 6, characterized in that the core (51), the deformation portion (52) and the peripheral portion (53) are integrally formed.
  8. 8. The circulation diaphragm valve according to any one of claims 1 to 7, characterized in that the opening and closing driving mechanism (6) comprises a push-pull rod (61) and an opening and closing driving assembly (62) arranged on the main body (1), one end of the push-pull rod (61) is connected with the core (51) through a connector (63), and the other end is connected with the opening and closing driving assembly (62).
  9. 9. The circulation diaphragm valve according to claim 8, characterized in that the connection head (63) is coaxially connected with the core (51) and the connection head (63) has a smaller outer diameter than the core (51).
  10. 10. The circulating diaphragm valve according to claim 8, characterized in that the push-pull rod (61) is slidingly arranged on the body (1) and coaxial with the containing chamber (7).

Description

Circulation diaphragm valve Technical Field The utility model relates to the technical field of food and medicine packaging mechanical equipment, in particular to a circulating diaphragm valve. Background The Chinese patent document with the prior application number of CN202323409170.9 discloses a diaphragm valve device, and specifically discloses a diaphragm valve device which comprises a main body, a first channel, a second channel and a valve port, wherein the first channel, the second channel and the valve port are arranged on the main body, the first channel and the second channel are communicated through the valve port, a diaphragm for opening and closing a valve opening and a switching driving mechanism for driving the diaphragm to perform switching movement are arranged on the main body at the valve port, the switching driving mechanism comprises a push-pull rod, a lever and a switching driving assembly arranged on the main body, one end of the lever is connected with the main body in a swinging way, the other end of the lever is connected with a driving end of the switching driving assembly in a swinging way, and the middle part of the lever is connected with the diaphragm through the push-pull rod. When the valve is closed, the opening and closing driving assembly drives the lever to swing positively to drive the push-pull rod to move towards the direction close to the valve port, so that the diaphragm is attached to the outer end face of the valve port, and the first channel and the second channel are mutually blocked to realize the closing. When the valve is opened, the opening and closing driving assembly drives the lever to swing reversely and drives the push-pull rod to move away from the valve port, so that the diaphragm is separated from the outer end face of the valve port, and the first channel and the second channel are mutually communicated to realize opening. The diaphragm valve device has the following defects that most of the diaphragm is still in a suspended state positioned in the second channel when the valve port is closed, and the diaphragm is subjected to larger reverse thrust by the second channel in the pressing process of the driving mechanism, so that the driving mechanism with larger downward thrust needs to be selected, and correspondingly, the weight and the volume of the driving mechanism also need to be made larger, namely the occupied space is large and the weight is heavy. Disclosure of utility model The utility model aims to solve the technical problem of overcoming the defects of the prior art and providing a circulating diaphragm valve capable of reducing the weight, the volume and the occupied space of an opening and closing driving mechanism. In order to solve the technical problems, the utility model adopts the following technical scheme: The utility model provides a circulation diaphragm valve, includes the main part and locates first passageway, second passageway, valve port, diaphragm and the switching actuating mechanism in the main part, first passageway and second passageway pass through the valve port intercommunication, be equipped with on the position of the relative valve port of main part and hold the chamber, the diaphragm includes core and deformation portion, the switching actuating mechanism is connected with the core for the axial motion that the drive core was held the chamber is in order to open and close the valve mouth, the deformation portion connects the core with the lateral wall that holds the chamber, deformation portion includes first deformation section and the second deformation section that arch in holding the intracavity in turn when the valve port is opened and closed to the core, form cyclic annular gradual change face between core and the switching actuating mechanism. As a further improvement of the above technical scheme: The annular gradual change surface is formed on the periphery of the core part and is axially arranged corresponding to the deformation part in the accommodating cavity, and a deformation cavity communicated with the second channel is formed between the annular gradual change surface and the deformation part. The annular gradual change surface is a conical surface with a small upper part and a large lower part. The core is smaller than the receiving cavity. The core, the accommodating cavity and the valve port are coaxial, and the inner side surface of the accommodating cavity is a cylindrical surface. The outer periphery of the deformation part is provided with a peripheral edge part, and the peripheral edge part is in fit connection with the outer end surface of the accommodating cavity. The core, the deformation portion and the peripheral portion are integrally formed. The opening and closing driving mechanism comprises a push-pull rod and an opening and closing driving assembly arranged on the main body, wherein one end of the push-pull rod is connected with the core through a connector, and the other end