Metal throttle valve with scale indication

Abstract

The utility model discloses a metal throttle valve with scale indication, which comprises a throttle valve body, a valve needle is assembled in the throttle valve body, the top surface of the throttle valve body is fixedly connected with a locking nut, the locking nut is in threaded connection with the valve needle, the top of the valve needle is fixedly connected with a cover body, and the cover body is in threaded connection with the valve needle. The top surface of the locking nut is provided with number marks in a surrounding mode, and the top surface of the cover body is provided with indicators matched with the number marks. In combination with the structural design of the throttle valve, the digital identifier and the indicator are arranged, and the digital identifier pointed by the indicator is the opening size of the throttle valve in the process that the cover body drives the valve needle and the locking nut to rotate in a matched manner, so that an operator can intuitively see the opening size of the throttle valve in the process of operating the throttle valve, and the safety of the throttle valve is improved. And the flow is more accurate when the throttle valve is used.

Description

Technical Field

[0001] The utility model relates to the technical field of throttle valves, in particular to a metal throttle valve with a scale indication. Background Technique

[0002] A throttle valve is a valve that controls the fluid flow by changing the throttle section or the throttle length. Combining a throttle valve and a check valve in parallel can form a one-way throttle valve.

[0003] Since the existing throttle valves are not provided with indication marks, it is impossible to know the opening size of the throttle valve during the adjustment process, resulting in the phenomenon of over-adjustment or under-adjustment, which affects the normal use of the throttle valve. Summary of the Invention

[0004] The purpose of the utility model is to provide a metal throttle valve with a scale indication to solve the problem mentioned in the above background technique that since the existing throttle valves are not provided with indication marks, it is impossible to know the opening size of the throttle valve during the adjustment process, resulting in the phenomenon of over-adjustment or under-adjustment, which affects the normal use of the throttle valve.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A metal throttle valve with a scale indication, including a throttle valve body, a valve needle is assembled inside the throttle valve body, a locking nut is fixedly connected to the top surface of the throttle valve body, and the locking nut is threadedly connected to the valve needle. A cover body is fixedly connected to the top of the valve needle. Digital marks are evenly arranged around the top surface of the locking nut, and an indicating mark matching the digital marks is arranged on the top surface of the cover body.

[0006] Preferably, a threaded body is assembled at the bottom of the throttle valve body. The inside of the threaded body is communicated with the inside of the throttle valve body. A valve core cooperating with the valve needle is assembled at the connection between the inside of the threaded body and the inside of the throttle valve body.

[0007] Preferably, one end of a V-shaped seal is fixedly connected to the outer wall of the valve core, and the other end of the V-shaped seal is fixedly connected to the inner wall surface of the throttle valve body.

[0008] Preferably, an inlet passage is arranged on one side of the throttle valve body. A first sealing ring is arranged in the inlet passage. A retaining ring for limiting the first sealing ring is fixedly connected to the inner wall of the inlet passage. A cap and a positioning block are arranged on one side of the retaining ring. The cap is movably connected to the surface of the positioning block. A snap ring is fixedly connected to the surface of the positioning block, and the surface of the snap ring abuts against one end face of the cap.

[0009] Preferably, a second sealing ring is arranged at the connection between the throttle valve body and the threaded body.

[0010] Preferably, a groove is provided on the outer wall surface of the valve needle, and a third sealing ring is sleeved in the groove.

[0011] Preferably, a fourth sealing ring for connection is sleeved on the outer wall surface of the threaded body.

[0012] Advantageous Effects

[0013] Compared with the existing technology, the advantageous effects of the present utility model are as follows:

[0014] Combined with the structural design of the present utility model, by setting digital identifiers and indicating marks, during the rotation process of the cover body driving the valve needle to cooperate with the lock nut, the digital identifier pointed to by the indicating mark is the opening size of the throttle valve, which is convenient for the operator to directly see the opening size of the throttle valve during the operation of the throttle valve, making the flow rate of the throttle valve more accurate when in use. Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the internal structure of the present utility model.

[0017] 1. Cap; 2. Positioning block; 3. Circlip; 4. Snap ring; 5. First sealing ring; 6. Cover body; 7. Lock nut; 8. Valve needle; 9. Third sealing ring; 10. Throttle valve body; 11. Valve core; 12. Groove;

[0018] 13. V-shaped seal; 14. Second sealing ring; 15. Threaded body; 16. Fourth sealing ring; 17. Inlet channel;

[0019] 18. Digital identifier; 19. Indicating mark. Specific Embodiments

[0020] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments of the present utility model belong to the scope of protection of the present utility model.

[0021] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "front", "rear", "inner", "outer", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it is not understood as a limitation to the present utility model. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] As Figure 1-2 It is a schematic structural diagram of a metal throttle valve with scale indication in a preferred embodiment of the present utility model. In this embodiment, a metal throttle valve with scale indication includes a throttle valve body 10. A valve needle 8 is assembled inside the throttle valve body 10. A lock nut 7 is fixedly connected to the top surface of the throttle valve body 10, and the lock nut 7 is threadedly connected to the valve needle 8. A cover body 6 is fixedly connected to the top of the valve needle 8. With this structural design, by the operator rotating the cover body 6 to drive the valve needle 8 to rotate, due to the threaded connection between the valve needle 8 and the lock nut 7, the valve needle 8 has the function of moving up and down. Digital markings 18 are evenly arranged around the top surface of the lock nut 7, and an indicating mark 19 that cooperates with the digital markings 18 is provided on the top surface of the cover body 6. The digital marking 18 pointed to by the indicating mark 19 is the opening size of the throttle valve, which is convenient for the operator to directly see the opening size between the valve needle 8 and the valve core 11 of the throttle valve during the operation of the throttle valve, making the flow rate of the throttle valve more accurate when in use.

[0023] In this embodiment, a threaded body 15 is assembled at the bottom of the throttle valve body 10. The inside of the threaded body 15 is communicated with the inside of the throttle valve body 10. A valve core 11 that cooperates with the valve needle 8 is assembled at the connection between the inside of the threaded body 15 and the inside of the throttle valve body 10. The control of the fluid is achieved through the cooperation of the valve core 11 and the valve needle 8.

[0024] In this embodiment, one end of a V-shaped seal 13 is fixedly connected to the outer wall of the valve core 11, and the other end of the V-shaped seal 13 is fixedly connected to the inner wall surface of the throttle valve body 10, thereby increasing the sealing performance between the throttle valve body 10 and the valve core 11.

[0025] In this embodiment, an inlet passage 17 is provided on one side of the throttle valve body 10. A first sealing ring 5 is arranged in the inlet passage 17, and its arrangement increases the sealing performance inside the inlet passage 17. The inner wall of the inlet passage 17 is fixedly connected with a snap ring 4 for limiting the first sealing ring 5. A cap 1 and a positioning block 2 are arranged on one side of the snap ring 4. The cap 1 is movably connected to the surface of the positioning block 2, so that the cap 1 can have the function of telescopic sliding in the inlet passage 17. A circlip 3 is fixedly connected to the surface of the positioning block 2, and the surface of the circlip 3 abuts against one end face of the cap 1. With this structural design, the cap 1 can be reset when sliding in the inlet passage 17.

[0026] In this embodiment, a second sealing ring 14 is arranged at the connection between the throttle valve body 10 and the threaded body 15 to increase the sealing performance at the connection between the throttle valve body 10 and the threaded body 15.

[0027] In this embodiment, a groove 12 is formed on the outer wall surface of the valve needle 8, and a third sealing ring 9 is sleeved in the groove 12. With this structural design, the sealing performance between the valve needle 8 and the inside of the throttle valve body 10 is increased.

[0028] In this embodiment, a fourth sealing ring 16 for connection is sleeved on the outer wall surface of the threaded body 15 to increase the sealing performance when the throttle valve is connected to the connected part.

[0029] The above content further elaborates on the present invention in combination with specific embodiments. It cannot be determined that the specific implementation of the present invention is only limited to these descriptions. For those of ordinary skill in the technical field to which the present invention pertains, without departing from the concept of the present invention, several simple deductions or substitutions can still be made, and all should be regarded as falling within the protection scope determined by the claims submitted for the present invention.

Claims

1. A metal throttle valve with scale indication, comprising a throttle valve body (10), wherein a valve needle (8) is assembled in the throttle valve body (10), and is characterized in that: A locking nut (7) is fixedly connected to the top surface of the throttle valve body (10), and the locking nut (7) is threadedly connected to the valve needle (8). A cover body (6) is fixedly connected to the top of the valve needle (8). Digital identifiers (18) are evenly arranged in a circular pattern on the top surface of the locking nut (7). An indicating mark (19) that cooperates with the digital identifiers (18) is provided on the top surface of the cover body (6).

2. The metal throttle valve with scale indication according to claim 1, wherein: A threaded body (15) is assembled at the bottom of the throttle valve body (10). The interior of the threaded body (15) communicates with the interior of the throttle valve body (10). A valve core (11) that cooperates with the valve needle (8) is assembled at the connection between the interior of the threaded body (15) and the interior of the throttle valve body (10).

3. The metal throttle valve with scale indication according to claim 2, characterized in that: One end of a V-shaped seal (13) is fixedly connected to the outer wall of the valve core (11), and the other end of the V-shaped seal (13) is fixedly connected to the inner wall surface of the throttle valve body (10).

4. The metal throttle valve with scale indication according to claim 2, wherein: An inlet passage (17) is provided on one side of the throttle valve body (10). A first sealing ring (5) is arranged in the inlet passage (17). A retaining ring (4) for limiting the first sealing ring (5) is fixedly connected to the inner wall of the inlet passage (17). A cap (1) and a positioning block (2) are provided on one side of the retaining ring (4). The cap (1) is movably connected to the surface of the positioning block (2). A circlip (3) is fixedly connected to the surface of the positioning block (2), and the surface of the circlip (3) abuts against one end face of the cap (1).

5. The metal throttle valve with scale indication according to claim 2, wherein: A second sealing ring (14) is provided at the connection between the throttle valve body (10) and the threaded body (15).

6. The metal throttle valve with scale indication according to claim 1, characterized in that: A groove (12) is formed on the outer wall surface of the valve needle (8), and a third sealing ring (9) is sleeved in the groove (12).

7. The metal throttle valve with scale indication according to claim 5, characterized in that: A fourth sealing ring (16) for connection is sleeved on the outer wall surface of the threaded body (15).

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