CN212203270U

CN212203270U - Axial flow type check valve

Info

Publication number: CN212203270U
Application number: CN202020689093.4U
Authority: CN
Inventors: 李金涛; 吴海
Original assignee: Shanghai Panda Machinery Group Co Ltd
Current assignee: Shanghai Panda Machinery Group Co Ltd
Priority date: 2020-04-29
Filing date: 2020-04-29
Publication date: 2020-12-22
Anticipated expiration: 2030-04-29

Abstract

The utility model relates to an axial-flow check valve, including valve body, guide holder, regulation seat and case, valve body one side is the export, and the opposite side is for entering the mouth and being provided with the disk seat, and valve body export one side internally mounted has the guide holder, and the valve rod is installed through the screw thread in the middle part of the guide holder, and the valve rod is kept away from the one end of valve body export and is installed the regulation seat, adjusts and installs the spring on the seat, installs the case on the spring, and the disk seat is hugged closely to the. The utility model discloses a pretightning force of rotatory valve rod regulating spring to adjust axial flow type check valve's opening pressure, flow capacity, closing time and sealed performance parameter such as specific pressure, satisfy the actual demand of various operating modes.

Description

Axial flow type check valve

Technical Field

The utility model belongs to the technical field of the plumbing, especially, relate to an axial-flow check valve.

Background

The check valve is a valve whose opening and closing part is a circular valve clack and acts by its own weight and medium pressure to block the medium from flowing backwards, and belongs to the automatic valve class, also called check valve, one-way valve, backflow valve or isolating valve. The axial flow type check valve on the market at present has few regulatory function, and performance parameters such as opening pressure, circulation ability, closing time and sealed specific pressure of valve can't adjust, can not satisfy the actual demand of various operating modes. In order to solve the above problems, an axial flow check valve has been devised.

Disclosure of Invention

The utility model aims to solve the technical problem that an axial flow type check valve is provided, performance parameters such as opening pressure, circulation ability, closing time and sealed specific pressure of regulating valve that can be convenient satisfy the actual demand of various operating modes.

The utility model discloses a solve the technical scheme that its technical problem adopted and be: the utility model provides an axial-flow check valve, includes valve body, guide holder, regulation seat and case, and valve body one side is the export, and the opposite side is for entering the mouth and being provided with the disk seat, and valve body export one side internally mounted has the guide holder, and the valve rod is installed through the screw thread in the middle part of the guide holder, and the valve rod is kept away from the one end of valve body export and is installed the regulation seat, adjusts and installs the spring on the seat, installs the case on the spring, and the disk seat is hug. The extending distance of the valve rod relative to the guide seat is adjusted by rotating the valve rod, so that the pretightening force of the spring is adjusted, performance parameters such as the opening pressure, the flow capacity, the closing time and the sealing specific pressure of the axial flow type check valve are adjusted, and the actual requirements of various working conditions are met.

Furthermore, a guide rod is installed on the valve core, one end of the guide rod is fixed on the valve core, the other end of the guide rod penetrates through the adjusting seat and the guide seat, and the relative movement of the adjusting seat and/or the guide seat is free from blocking. The guide rod can make the work of valve more stable.

Furthermore, a limiting nut is arranged on the guide rod and arranged between the guide seat and the adjusting seat. The limiting nut can prevent the spring from being excessively compressed and deformed to influence the pressure adjusting precision.

Further, there are at least three guide rods.

Further, the valve rod is connected with the guide seat through right-handed threads, and the valve rod is connected with the adjusting seat through left-handed threads.

Further, the valve core is coated with a reinforced rubber pad for sealing the valve seat.

Furthermore, a pressure mark is arranged on the valve body, and the numerical value of the pressure mark is set according to the compression amount of the spring. The pressure required by opening the valve can be conveniently and quickly adjusted according to the pressure mark, and the actual requirement can be better met.

Further, the guide seat is installed inside one side of the valve body outlet through threads and is provided with a check ring.

Compared with the prior art, the utility model discloses a pretightning force of rotatory valve rod regulating spring to adjust axial flow type check valve's opening pressure, the circulation ability, performance parameters such as closing time and sealed specific pressure, satisfy the actual demand of various operating modes, for example when requiring the valve to have better leakproofness under low pressure, the rotatory valve rod of accessible increases the decrement of spring, when requiring that valve circulation ability to improve, the rotatory valve rod of accessible reduces the decrement of spring, the valve can be adjusted according to the user's demand, reach better performance, and is extensive in application, economical and practical.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1. a valve body; 11. marking the pressure; 12. a valve seat; 2. a retainer ring; 3. a guide seat; 4. a valve stem; 5. a guide bar; 6. a limit nut; 7. an adjusting seat; 8. a spring; 9. a valve core; 91. and (4) reinforcing the rubber pad.

Detailed Description

The present invention will be further described with reference to the following specific examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.

As shown in fig. 1, the present embodiment includes a valve body 1, a guide seat 3, an adjustment seat 7, and a valve element 9. The valve body 1 one side is the export, and the opposite side is for entering the mouth and install disk seat 12, and guide holder 3 is installed through the screw thread to export one side inside, installs retaining ring 2 on the guide holder 3, and valve rod 4 is installed through the screw thread to center department, and the relative guide holder 3's of rotatory valve rod 4 reach of the adjustable valve rod 4 distance. The adjusting seat 7 is installed on the valve rod 4, the spring 8 is installed on the adjusting seat 7, the valve core 9 is installed on the spring 8, the guide rod 5 is installed on the valve core 9, the guide rod 5 is fixed on the valve core 9 and penetrates through the adjusting seat 7 and the guide seat 3, the relative movement of the adjusting seat 7 and/or the guide seat 3 does not cause blocking, the position of the guide rod 5 between the guide seat 3 and the adjusting seat 7 is provided with the limiting nut 6, and the number of the guide rod 5 is at least three. The valve rod 4 is connected with the guide seat 3 through right-handed threads, and the valve rod 4 is connected with the adjusting seat 7 through left-handed threads. The valve core 9 is coated with a reinforced rubber pad 91, and the reinforced rubber pad 91 can enable the valve core 9 to better seal the valve seat 12. The valve body 1 is provided with a pressure mark 11, the numerical value of the pressure mark 11 is set according to the compression amount of the spring 8, and the numerical value of the pressure mark 11 corresponding to the left end face of the valve rod (4) is the opening pressure of the valve at the moment.

When the valve is used on site, the opening pressure of the valve is selected according to the actual requirement of a user, the valve rod 4 is rotated to align the left end face of the valve rod 4 with the value of the required pressure mark 11, the valve is correctly connected according to the flow direction of an industrial pipeline, and when a medium flows in the positive direction, the valve core 9 is acted by the medium force, and the valve is opened; when the medium in the pipeline flows backwards, the valve core 9 is sealed with the valve seat 12 under the action of the force of the spring 8 and the medium force, and the medium is prevented from passing through.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an axial flow type check valve, includes valve body (1), guide holder (3), adjusts seat (7) and case (9), its characterized in that, valve body (1) one side is the export, and the opposite side is for entering and be provided with disk seat (12), and valve body (1) exports one side internally mounted have guide holder (3), valve rod (4) are installed through the screw thread in guide holder (3) middle part, valve rod (4) are kept away from the one end that valve body (1) exported and are installed adjust seat (7), install spring (8) on adjusting seat (7), install case (9) on spring (8), disk seat (12) are hugged closely under the effect of spring (8) in case (9).

2. The axial flow check valve of claim 1, wherein the valve element (9) is provided with a guide rod (5), one end of the guide rod (5) is fixed on the valve element (9), the other end of the guide rod passes through the adjusting seat (7) and the guide seat (3), and the guide rod moves relative to the adjusting seat (7) and/or the guide seat (3) without blocking.

3. The axial check valve according to claim 2, characterized in that a stop nut (6) is mounted on the guide rod (5), the stop nut (6) being arranged between the guide seat (3) and the adjustment seat (7).

4. The axial check valve according to claim 2, characterized in that the guide rods (5) are at least three.

5. The axial check valve according to claim 1, characterized in that the valve rod (4) and the guide seat (3) are connected by a right-hand thread and the valve rod (4) and the adjustment seat (7) are connected by a left-hand thread.

6. The axial flow check valve of claim 1, characterized in that the valve element (9) is coated with a reinforced rubber gasket (91) for sealing the valve seat (12).

7. The axial check valve according to claim 1, characterized in that the valve body (1) is provided with a pressure mark (11), the value of the pressure mark (11) being set in dependence of the compression of the spring (8).

8. The axial check valve according to claim 1, characterized in that the guide seat (3) is mounted by means of a screw thread inside the side of the outlet of the valve body (1) and is provided with a collar (2).