Meter front valve with non-return function
By designing a front valve with a check function, and utilizing the check assembly and secondary valve chamber structure, the problems of slow response speed and impurity accumulation in traditional check valves are solved, achieving media backflow prevention and efficient operation, and reducing maintenance costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-03-31
AI Technical Summary
Traditional check valves are not fast enough or reliable enough, lack flexible adjustment functions, and are prone to malfunction due to the accumulation of impurities, increasing maintenance costs.
A front valve with a check function was designed, including a check assembly comprising a sealing disc, a guide rod, and an adjusting nut head. It can automatically or manually adjust the position of the sealing disc under strong convection and weak backflow conditions to prevent media backflow. Solid particles are deposited through the cylindrical chamber at the bottom of the secondary valve chamber, and a drain port is provided for easy cleaning.
It effectively prevents backflow of the medium, reduces wear on the valve caused by solid particles, maintains efficient valve operation, and reduces maintenance costs.
Smart Images
Figure CN224064904U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to check valve technical field, especially, it is related to a table front valve with check function. BACKGROUND
[0002] Check valves are mainly used to prevent fluid from flowing in the opposite direction to protect other equipment in the system from damage. Such valves usually rely on the flow direction of the medium to automatically open or close, for example, by gravity or spring action to open the valve disc when flowing in the positive direction, and close when flowing in the reverse direction. However, in actual application, this mechanism has the following obvious limitations:
[0003] The traditional check valve may not be fast or reliable in response due to factors such as the mass of the valve disc and the force of the spring, and may delay closing, resulting in some medium flowing in the opposite direction, and lacks the function of flexible adjustment, and cannot adjust the closing force or sensitivity according to the actual working conditions. Some complex check valves, although fully functional, are prone to accumulate impurities and solid particles after long-term use, causing the valve to fail to close or open normally, increasing the cost of cleaning and maintenance.
[0004] Therefore, we provide a table front valve with check function to solve the above problems. SUMMARY
[0005] The utility model aims at providing a table front valve with check function, which solves the problem of low practicality of the existing check valve by setting a check assembly to deal with pipe backflow under different conditions.
[0006] To solve the above technical problems, the utility model is implemented by the following technical solutions:
[0007] The utility model is a table front valve with check function, which includes a valve body, the valve body includes a valve seat, an output pipe fixed and penetrating the middle position of the valve seat, a main valve chamber connected with the end of the output pipe away from the valve seat, a vice valve chamber set on the side of the main valve chamber, an input pipe connected with the vice valve chamber, and a drain port set on the lower part of the vice valve chamber, and the drain port is sealed by a bolt.
[0008] The vice valve chamber is internally provided with a check assembly, the check assembly includes an adjusting nut head screw-fitted on one end of the vice valve chamber, a guide rod rotationally set on the inside middle position of the adjusting nut head, a sealing disc plate telescopically matched with the other end of the guide rod, and a shunt leaf fixed on the side surface of the sealing disc plate.
[0009] The utility model is further provided with a valve core seat installed at the opening of the top of the main valve chamber, a valve rod connected by screwing through the middle part of the valve core seat, a disc valve core fixed on the bottom of the valve rod, and the disc valve core is adapted to the upper end opening of the output pipe.
[0010] The utility model further sets up, the disc valve core lower side edge part is equipped with sealing washer, the disc valve core and the interface of output pipe form sealing cooperation through sealing washer.
[0011] The utility model further sets up, the sub valve chamber with main valve chamber inside cavity is linked together, and the lower part of sub valve chamber is cylindrical chamber, the drain is located in the lowest point intermediate position of cylindrical chamber, and the drain is linked together with the cylindrical chamber of sub valve chamber lower part.
[0012] The utility model further sets up, the cylindrical chamber of sub valve chamber lower part is coaxial with guide rod and sealing round plate, sealing round plate and cylindrical chamber inner wall are provided with the gap for liquid medium flow.
[0013] The utility model further sets up, the shunt leaf goes in and out cooperation in input pipe inside, the outer diameter of sealing round plate is greater than the liquid channel inner diameter of input pipe, and the side of sealing round plate is matched with input pipe inner end opening.
[0014] The utility model further sets up, the guide rod circumferential side is along its length direction and is provided with the limit strip, its limit strip is matched with the groove position of sealing round plate and shunt leaf intermediate position, and the middle part of guide rod is fixed with convex structure.
[0015] The utility model has the following beneficial effects:
[0016] 1, the utility model discloses a built-in check assembly in valve body, specifically including sealing round plate, guide rod and adjusting nut head, the above-mentioned component cooperates, effectively prevents the medium backflow, in the strong convection case, sealing round plate can move independently, automatically blocks input pipe connecting place, and in the weak backflow case, can control the position of sealing round plate through manual adjusting nut head, ensures the anti-backflow effect.
[0017] 2, the utility model discloses the cylindrical chamber in the lower part of sub valve chamber is set up, is used for depositing the solid particles in liquid medium, reduces the wear and influence of these particles to the internal structure of valve, in addition, the drain of setting in the lowest point is convenient for cleaning the solid object of accumulation regularly, maintains the efficient operation of valve. BRIEF DESCRIPTION OF DRAWINGS
[0018] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduces.
[0019] Figure 1 It is a kind of valve stem and disc valve core installation schematic diagram of table front valve with check function.
[0020] Figure 2The figure is a schematic diagram of a check assembly of a front valve with check function.
[0021] Figure 3 The figure is a schematic diagram of a valve seat and output pipe position of a front valve with check function.
[0022] Figure 4 The figure is a schematic diagram of a check assembly structure of a front valve with check function.
[0023] Figure 5 The figure is a schematic diagram of a front valve with check function.
[0024] In the drawings, the components represented by the respective reference numerals are listed as follows:
[0025] 100, valve body; 101, valve seat; 102, output pipe; 103, main valve chamber; 104, valve core seat; 105, disc valve core; 106, valve rod; 107, auxiliary valve chamber; 108, input pipe; 109, drain; 200, check assembly; 201, adjusting nut head; 202, guide rod; 203, sealing disc; 204, shunt leaf. DETAILED DESCRIPTION
[0026] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model.
[0027] EMBODIMENT
[0028] Please refer to Figures 1-5 The utility model discloses a front valve with check function, which comprises a valve body 100, the valve body 100 comprises a valve seat 101, an output pipe 102 fixedly arranged in the middle position of the valve seat 101, a main valve chamber 103 communicated with the end of the output pipe 102 away from the valve seat 101, an auxiliary valve chamber 107 arranged on the side of the main valve chamber 103, an input pipe 108 communicated with the auxiliary valve chamber 107, and a drain 109 arranged at the lower part of the auxiliary valve chamber 107, wherein the drain 109 is sealed by a bolt, the main valve chamber 103 and the auxiliary valve chamber 107 form the main structure of the valve body 100, liquid medium flows into the auxiliary valve chamber 107 through the input pipe 108, then enters the main valve chamber 103, and finally is discharged through the output pipe 102, and the solid matters accumulated in the process are cleaned periodically through the drain 109.
[0029] The auxiliary valve chamber 107 is internally provided with a check assembly 200, which includes a adjusting nut head 201 threadedly fitted to one end of the auxiliary valve chamber 107, a guide rod 202 rotatably arranged at the middle position of the inside of the adjusting nut head 201, a sealing circular plate 203 telescopically matched with the other end of the guide rod 202, and a shunt blade 204 fixed to the side surface of the sealing circular plate 203. In the case of strong convection, the sealing circular plate 203 is subjected to a relatively large reverse force, and moves along the guide rod 202 and blocks the connection of the input pipe 108. In the case of weak backflow, the guide rod 202 can be controlled by the adjusting nut head 201 to act on the sealing circular plate 203, so as to achieve the above-mentioned effect.
[0030] Specifically, the shunt blade 204 is in and out matched in the inside of the input pipe 108. The medium flowing into the input pipe 108 is dispersed and slowed down by the shunt blade 204, so as to reduce the impact on the sealing circular plate 203, and at the same time, the flow rate of the liquid medium tends to be stable. The shunt blade 204 moves synchronously with the sealing circular plate 203, so that with the change of the position of the sealing circular plate 203, the shunt blade 204 also enters and exits the input pipe 108. The outer diameter of the sealing circular plate 203 is greater than the inner diameter of the liquid passage of the input pipe 108, and the side surface of the sealing circular plate 203 is matched with the opening of the inner end of the input pipe 108, so that when the sealing circular plate 203 is in contact with the inner end of the input pipe 108 under the natural action of backflow or the active adjustment of the adjusting nut head 201, the liquid can be blocked from flowing back along the input pipe 108. The guide rod 202 is symmetrically provided with a limiting strip along the length direction of the circumference thereof. The limiting strip is matched with the groove position of the middle position of the sealing circular plate 203 and the shunt blade 204, and the middle part of the guide rod 202 is symmetrically fixed with a protruding structure. The guide rod 202 provides a moving path for the whole formed by the sealing circular plate 203 and the shunt blade 204, and through the cooperation of the limiting strip and the groove position, the stable movement of the above-mentioned structure is ensured. When the adjusting nut head 201 is rotated, the protruding structure on the circumference of the guide rod 202 gradually approaches the side surface of the sealing circular plate 203 when the guide rod 202 gradually extends into the inside of the sealing circular plate 203, until it is tightly contacted. At this time, the adjusting nut head 201 is continuously rotated, so as to actively drive the sealing circular plate 203, and actively block the input pipe 108.
[0031] Further, the valve core seat 104 is installed at the top opening of the main valve chamber 103, the valve rod 106 is connected in the middle of the valve core seat 104 by screwing, the disc valve core 105 is fixed at the bottom of the valve rod 106, the disc valve core 105 is matched with the upper end opening of the output pipe 102, the sealing washer is sleeved at the lower side of the disc valve core 105, the interface between the disc valve core 105 and the output pipe 102 is sealed by the sealing washer, the valve core seat 104 is used for the integral installation of the valve rod 106 and the disc valve core 105, when the valve rod 106 is rotated by the external tool, the position of the disc valve core 105 at the bottom end of the valve rod 106 relative to the opening end of the output pipe 102 is changed, thereby the flow regulation or on-off control of the valve body 100 is realized.
[0032] The auxiliary valve chamber 107 is communicated with the internal cavity of the main valve chamber 103, and the two constitute the complete cavity of the valve body 100, the lower part of the auxiliary valve chamber 107 is a cylindrical cavity, which is used for depositing solid particles in the liquid medium, the drain port 109 is located at the lowest intermediate position of the cylindrical cavity, the drain port 109 is communicated with the cylindrical cavity at the lower part of the auxiliary valve chamber 107, which facilitates the discharge of the accumulated substances in the auxiliary valve chamber 107, the cylindrical cavity at the lower part of the auxiliary valve chamber 107 is coaxially arranged with the guide rod 202 and the sealing disc 203, which ensures that the sealing disc 203 can correctly act on the interface between the cylindrical cavity and the input pipe 108, the sealing disc 203 and the inner wall of the cylindrical cavity are provided with a gap for the flow of the liquid medium, which is used for the normal flow of the liquid medium when the liquid medium is input.
[0033] The operation process of the embodiment is as follows: when the valve needs to be opened for medium transmission, the valve rod 106 is rotated by the external tool, the disc valve core 105 is moved, the channel of the output pipe 102 is opened, the liquid medium flows into the auxiliary valve chamber 107 from the input pipe 108, the medium entering the auxiliary valve chamber 107 first meets the shunt leaf 204, the shunt leaf 204 effectively disperses the fluid and slows down the speed, thereby reducing the impact on the sealing disc 203 and maintaining the stability of the medium flow, the solid particles in the medium are deposited at the bottom of the cylindrical cavity under the action of gravity, in order to maintain the normal work of the valve body 100, the accumulated solid substances need to be cleaned regularly through the drain port 109, and then the medium continues to flow to the main valve chamber 103 and flows out through the output pipe 102. In this process, if backflow occurs, the sealing disc 203 will move along the guide rod 202 under the action of the reverse fluid, until the side edge of the sealing disc 203 is in close contact with the inner end opening of the input pipe 108, thereby preventing the medium from flowing backward; for the weak backflow, the position of the sealing disc 203 can be accurately controlled by adjusting the nut head 201, thereby enhancing the effect of preventing backflow.
[0034] In the description of the present specification, the description of the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.
Claims
1. A front-of-meter valve with non-return function comprising a valve body (100); characterized in that: The valve body (100) comprises a valve seat (101), an output pipe (102) fixed and penetrating the middle position of the valve seat (101), a main valve chamber (103) communicated with the end of the output pipe (102) away from the valve seat (101), a sub valve chamber (107) arranged on the side of the main valve chamber (103), an input pipe (108) communicated with the sub valve chamber (107), and a drain port (109) arranged at the lower part of the sub valve chamber (107), wherein the drain port (109) is sealed by bolts. The sub valve chamber (107) is internally provided with a check assembly (200), wherein the check assembly (200) comprises an adjusting nut head (201) screw-fitted on one end of the sub valve chamber (107), a guide rod (202) rotationally arranged at the middle position of the inner side of the adjusting nut head (201), a sealing disc (203) in telescopic cooperation with the other end of the guide rod (202), and a shunt blade (204) fixed on the side surface of the sealing disc (203).
2. A face valve with non-return function according to claim 1, characterized in that The main valve chamber (103) is provided with a valve core seat (104) at the top opening, the middle part of the valve core seat (104) is screw-penetrated to be connected with a valve rod (106), the bottom of the valve rod (106) is fixed with a disc valve core (105), and the disc valve core (105) is adapted to the upper end opening of the output pipe (102).
3. A face valve with non-return function according to claim 2, characterized in that The lower side edge of the disc valve core (105) is sleeved with a sealing washer, and the interface between the disc valve core (105) and the output pipe (102) is sealingly matched through the sealing washer.
4. A face valve with non-return function according to claim 1, characterized in that The sub valve chamber (107) is communicated with the internal cavity of the main valve chamber (103), and the lower part of the sub valve chamber (107) is a cylindrical chamber, the drain port (109) is located at the middle position of the lowest part of the cylindrical chamber, and the drain port (109) is communicated with the cylindrical chamber at the lower part of the sub valve chamber (107).
5. A face valve with non-return function according to claim 4, characterized in that The cylindrical chamber at the lower part of the sub valve chamber (107) is coaxially arranged with the guide rod (202) and the sealing disc (203), and the sealing disc (203) and the inner wall of the cylindrical chamber are provided with a gap for the flow of liquid medium.
6. A face valve with non-return function according to claim 1, characterized in that The shunt blade (204) is in cooperation with the inside of the input pipe (108), the outer diameter of the sealing disc (203) is greater than the inner diameter of the liquid passage of the input pipe (108), and the side surface of the sealing disc (203) is matched with the inner end opening of the input pipe (108).
7. A face valve with non-return function according to claim 1, characterized in that The guide rod (202) is symmetrically provided with a limiting strip along the length direction of the guide rod (202), the limiting strip is matched with the groove position of the middle position of the sealing disc (203) and the shunt blade (204), and the middle part of the guide rod (202) is symmetrically fixed with a protruding structure.