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CN-224214703-U - Advection sealing valve for chemical production

CN224214703UCN 224214703 UCN224214703 UCN 224214703UCN-224214703-U

Abstract

The utility model relates to a advection sealing valve for chemical production, which comprises a valve body, wherein valve covers are fixedly connected at two axial ends of the valve body, an input port and an output port are arranged on the valve body, a valve seat for dividing an inner cavity of the valve body into two valve chambers is fixedly arranged in the valve body, the valve seat is provided with a valve port, the input port and the output port are respectively communicated with the two valve chambers, the advection sealing valve also comprises a sealing piece positioned in the valve chamber, the sealing piece comprises a valve rod extending along the axial direction and a valve head group in sealing fit with the valve seat, one end of the valve head group facing the valve seat is provided with a first counter bore and a second counter bore in sequence, the aperture of the first counter bore is smaller than the aperture of the second counter bore, the side wall of the valve head group is provided with a flat pressing hole for communicating the second counter bore, a balance valve head in sealing fit with the first counter bore is arranged in the second counter bore, one end of the valve rod is fixedly connected with the balance valve head, and the other end of the valve rod penetrates the valve cover to extend to the outside. The utility model is convenient for replacing the wearing part, and the valve head group can be opened and closed more smoothly and more effort-saving by balancing the internal and external pressure of the valve head group.

Inventors

  • PAN JIAN
  • PAN YUE
  • ZHANG MENG
  • Ning Zizhong

Assignees

  • 山东若水工贸有限责任公司

Dates

Publication Date
20260508
Application Date
20250522

Claims (10)

  1. 1. The utility model provides a advection sealing valve for chemical production, includes valve body (1), is equipped with input port (7) and delivery outlet (8) on the valve body, set firmly in valve body (1) valve seat (3) that separate into two valve boxes (11) with valve body (1) inner chamber, input port (7) and delivery outlet (8) communicate with two valve boxes (11) respectively, be equipped with in valve box (11) with valve seat sealing fit's sealing member, wherein, sealing member includes valve rod (6) and valve head group (4), and first counter bore (44) and second counter bore (45) have been seted up inwards towards one end of valve seat (3) in valve head group (4), set up on valve head group (4) lateral wall flat pressure hole (46) of intercommunication second counter bore (45), be equipped with in second counter bore (45) with first counter bore (44) sealing fit's valve head (5), valve rod (6) one end is connected with valve head (5), and valve rod (6) other end extends to outside.
  2. 2. The advection sealing valve for chemical production according to claim 1, wherein the valve head group (4) comprises a sealing valve head (41), a lining (42), a sealing cover (43) and the balance valve head (5), one end of the sealing valve head (41) is opposite to the valve seat (3), the lining (42) is sleeved at the other end of the sealing valve head (41) and is fixedly connected with the sealing valve head (41) through bolts, the sealing cover (43) is fixedly connected with one end of the lining (42) far away from the sealing valve head (41) through bolts, the inner cavity of the sealing valve head (41) is a first counter bore (44) of the valve head group, and the inner cavity of the lining (42) is a second counter bore (45) of the valve head group.
  3. 3. The advection sealing valve for chemical production according to claim 2, wherein the valve seat (3) is of a circular ring structure, the outer wall of the valve seat (3) is fixedly connected with the inner wall of the valve body (1), one end of the valve body (1) is opened to form the input port (7), the other end of the valve body is closed, one side of the outer wall of the valve body (1) is provided with the output port (8), the valve chamber (11) of one side of the valve seat, which is close to the closed end of the valve body, is internally provided with the sealing element, and the valve rod of the sealing element penetrates through the closed end of the valve body to extend to the outside.
  4. 4. The advection sealing valve for chemical production according to claim 2, wherein one end of the valve body (1) is opened to form the input port (7), the other end of the valve body is closed, two output ports (8) are respectively arranged on two sides of the outer wall of the valve body (1), the sealing element is arranged in a valve chamber (11) on one side of the valve seat, which is far away from the closed end of the valve body, and a valve rod of the sealing element penetrates through the closed end of the valve body to extend to the outside.
  5. 5. The advection sealing valve for chemical production according to claim 2, wherein two ends of the valve body (1) are respectively arranged in a closed mode, an output port (8) and an input port (7) are respectively arranged on two sides of the outer wall of the valve body (1), the output port and the input port are concentrically arranged, the sealing element is arranged in one valve chamber (11), and a valve rod of the sealing element penetrates through one end of the valve body to extend to the outside.
  6. 6. The advection sealing valve for chemical production according to claim 4 or 5, wherein the valve seat (3) comprises an annular first valve core (31 b) and an annular first partition plate (32 b), the outer wall of the first partition plate is fixedly connected with the inner wall of the valve body (1) in a sealing manner, and the outer wall of the first valve core (31 b) is fixedly connected with the inner wall of the first partition plate (32 b) in a sealing manner.
  7. 7. The advection sealing valve for chemical production according to claim 2 is characterized in that two ends of the valve body (1) are respectively arranged in a closed mode, an output port (8) and an input port (7) are respectively arranged on two sides of the outer wall of the valve body (1), the output port and the input port are arranged concentrically, sealing elements are respectively arranged in the two valve chambers (11), and valve rods of the two sealing elements penetrate through the same end of the valve body (1) or penetrate through two ends of the valve body (1) to extend to the outside.
  8. 8. The advection sealing valve for chemical production according to claim 5 or 7, wherein the valve seat (3) comprises an annular second valve core (31 a), an annular second partition plate (32 a) is fixedly sleeved on the outer wall of the second valve core (31 a), the outer diameter of the second partition plate is smaller than the inner diameter of the valve body (1), two vertical partition plates (33 a) extending vertically are symmetrically fixedly connected on the outer wall of the second partition plate (32 a), one side, far away from the second partition plate, of the two vertical partition plates (33 a) is fixedly connected with the inner wall of the valve body (1), the two vertical partition plates (33 a) are positioned between the input port (7) and the output port (8), a semi-annular upper partition plate (34 a) is fixedly connected on one side, close to the output port (8), the outer wall of the upper partition plate is fixedly connected with the inner wall of the valve body (1), a semi-annular first partition plate (36 a) is fixedly connected on the inner wall of the upper partition plate (34 a), the bottoms of the first partition plate (36 a) are fixedly connected with the second partition plate (32 a), two ends of the first partition plate (36 a) and two vertical partition plates (33 a) are fixedly connected with the inner wall of the valve body (1), two semi-annular partition plates (35 a) are fixedly connected on the two sides of the upper partition plates (33 a) close to the upper partition plate (35 a), the upper partition plate (35 a) is fixedly connected on the upper partition plate (35) is fixedly connected with the inner wall (35) at the upper partition plate (37 a) fixedly connected on the upper side, the two ends of the second side partition are fixedly connected with two vertical partition plates (33 a).
  9. 9. The advection sealing valve for chemical production according to claim 8, wherein the second valve core (31 a) is provided with a vent pipe (18) in a penetrating way, one end of the vent pipe is communicated with the inner cavity of the second valve core (31 a), the other end of the vent pipe is communicated with the outside of the valve body (1), and the vent pipe is provided with a switch valve (17).
  10. 10. The advection sealing valve for chemical production according to claim 8, wherein the top of the second valve core (31 a) is provided with an annular ventilation groove (12) downwards, the valve seat (3) is provided with an air inlet hole (13) and an air outlet hole (15) which are communicated with the ventilation groove (12), the air inlet hole and the air outlet hole are both communicated with the outside of the valve body, and one ends of the air inlet hole and the air outlet hole, which are positioned outside the valve body (1), are both provided with a switch valve (17).

Description

Advection sealing valve for chemical production Technical Field The utility model relates to the technical field of stop valves, in particular to a advection sealing valve for chemical production. Background In chemical production, some chemical pipelines can convey toxic and harmful gases, inflammable and explosive gases, and good tightness of valves on the pipelines is required to be ensured. The patent CN105387220A discloses a multi-purpose stop valve with a replaceable sealing valve seat, which comprises a valve shell, a valve core and a valve cover, wherein the valve cover is detachably connected with the valve body, both sides of the valve body are provided with an inlet and an outlet, the valve core comprises a sealing unit, the sealing unit comprises a valve rod and a valve head group which extend into the inner cavity of a hollow valve body from the valve cover, the valve head group is correspondingly provided with a hollow replaceable sealing valve seat, the outer wall of the replaceable sealing valve seat is in sealing fit with the inner wall of the hollow valve body, the end face of the replaceable sealing valve seat is in sealing fit with the end face of the valve head group, the outer wall of the valve body is provided with a detection hole communicated with the inner cavity of the sealing valve seat, and the inner wall of the valve body or the outer wall of the replaceable sealing valve seat is provided with an annular groove communicated with the detection hole. One end of the replaceable sealing valve seat is provided with a retaining ring, and the retaining ring is provided with a positioning pin. Different combinations can be provided according to the needs, such as a stop valve, a regulating valve, an upper check valve, a lower stop valve and the like, and the sealing valve seat has the advantages of being replaceable, low in cost and good in sealing effect. Because this patent has mainly solved the inconvenient defect of changing of valve casing and disk seat, but valve head group and valve rod still are monolithic structure, once wearing and tearing need whole change. When the medium enters the valve body, the pressure of one end of the valve head group close to the valve seat is smaller than the pressure of one end of the valve head group far away from the valve seat, the valve head group forms pressure difference inside and outside, and it is comparatively laborious to open and close, inconvenient valve open and close. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides the advection sealing valve for chemical production, which has higher tightness and is convenient for replacing the abrasion part, fluid advection to an outlet when the valve is opened, through-flow resistance is reduced, kinetic energy loss is reduced, and the opening and closing of the valve head group can be smoother and labor-saving by balancing the internal pressure and the external pressure of the valve head group when the valve head group is used. The utility model is realized through the following technical scheme that the advection sealing valve for chemical production comprises a valve body, wherein an input port and an output port are arranged on the valve body, a valve seat for dividing an inner cavity of the valve body into two valve chambers is fixedly arranged in the valve body, the input port and the output port are respectively communicated with the two valve chambers, a sealing element in sealing fit with the valve seat is arranged in the valve chamber, the sealing element comprises a valve rod and a valve head group, a first counter bore and a second counter bore are sequentially arranged at one end of the valve head group facing the valve seat inwards, a flat pressing hole communicated with the second counter bore is arranged on the side wall of the valve head group, a balance valve head in sealing fit with the first counter bore is arranged in the second counter bore, one end of the valve rod is connected with the balance valve head, and the other end of the valve rod extends to the outside of the valve body. When the valve head is used, the valve head group is internally provided with a first counter bore and a second counter bore which are communicated with the valve port, and the valve rod drives the balance valve head to move, so that the valve head group is driven to move, and the valve port is opened and closed. When the balance valve head opens the first counter bore, high-pressure fluid outside the valve head group enters the first counter bore through the flat pressure hole, so that the pressure at the inner end and the outer end of the valve head group is balanced, the valve head group opens the valve port more smoothly, and the labor is saved. When the balance valve head closes the sealed first counter bore, water inside the valve head group is discharged to the outside of the valve head group through the flat pressing hole, so that the balance