Stop valve with exhaust function

Abstract

The utility model belongs to the technical field of structural improvement of stop valves, and particularly relates to a stop valve with an exhaust function, which comprises a valve body, a medium inlet is arranged on the valve body, an exhaust port is arranged on the side wall of the medium inlet, a pressing sleeve is connected to a port of the exhaust port, and sealing clamping seats are mounted on ports on one sides, opposite to the exhaust port, of the pressing sleeve. A spherical core body is connected between the two sealing clamping seats, a through hole communicated with the pressing sleeve and the exhaust port penetrates through the spherical core body, a mounting port is formed in the side wall of the exhaust port, an exhaust rod is rotationally connected into the mounting port, the mounting port is in sealing connection with the exhaust rod, the exhaust rod can drive the spherical core body to rotate, and an exhaust handle is fixedly connected to the upper end of the exhaust rod. According to the self-priming pump, the exhaust operation can be carried out when the self-priming pump needs water diversion and exhaust, on one hand, an exhaust pipe does not need to be additionally installed on a medium conveying pipeline, pipeline redundancy is prevented, and on the other hand, timeliness of operation is guaranteed.

Description

Technical Field

[0001] The utility model relates to a stop valve with an exhaust function, belonging to the technical field of stop valve structure improvement. Background Art

[0002] In the pharmaceutical industry, self-priming pumps are widely used in the delivery process of liquid medicines because of their good self-priming performance, strong adaptability, and simple operation. The working principle of the self-priming pump is that the pump casing is filled with water before the pump is started. After starting, the impeller rotates at high speed, causing the water in the impeller groove to flow to the volute. At this time, a vacuum is formed at the inlet, causing the water inlet check valve to open, and the air in the suction pipe enters the pump and reaches the outer edge through the impeller groove. Through repeated cycles, the air in the suction pipe is gradually exhausted, allowing water to enter the pump, completing the self-priming process.

[0003] In the application of self-priming pumps, it is usually necessary to use a stop valve on the infusion pipeline. Since the stop valve currently used does not have an exhaust function, the prior art usually installs an additional exhaust pipe on the infusion pipeline and installs an exhaust valve on the exhaust pipe. When the self-priming pump needs to be vented, the exhaust valve can be opened to achieve exhaust. This method not only causes pipeline redundancy, but also is not conducive to the timely closure of the exhaust valve. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a stop valve with an exhaust function.

[0005] The stop valve with exhaust function described in the utility model comprises a valve body, a medium inlet is provided on the valve body, an exhaust port is provided on the side wall of the medium inlet, a compression sleeve is connected to the port of the exhaust port, sealing seats are installed on the ports on the opposite side of the compression sleeve and the exhaust port, a spherical core is connected between the two sealing seats, a through hole connecting the compression sleeve and the exhaust port is penetrated on the spherical core, a mounting port is provided on the side wall of the exhaust port, an exhaust rod is rotatably connected in the mounting port, the mounting port and the exhaust rod are sealed, the exhaust rod can drive the spherical core to rotate, and an exhaust handle is fixedly connected to the upper end of the exhaust rod.

[0006] Furthermore, a clamping head with a polygonal cross section is provided at the lower end of the exhaust rod, and a clamping groove matching the clamping head is provided on the spherical core.

[0007] Furthermore, a clamping platform with a polygonal cross section is provided at the upper end of the exhaust rod, a clamping socket matching the clamping platform is penetrated through the exhaust handle, and a clamping nut is threadedly connected to the upper end of the exhaust rod.

[0008] Furthermore, a step is provided on the exhaust rod, a sealing ring is sleeved on the exhaust rod, a gland is connected to the end of the mounting port, and the sealing ring is located in a gap formed by the gland, the mounting port and the step.

[0009] Furthermore, the gland is threadedly connected to the mounting opening.

[0010] Furthermore, the compression sleeve and the exhaust port are threadedly connected.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] The stop valve with exhaust function described in the utility model is installed on the medium conveying pipeline when in use. When the self-priming pump needs to divert water and exhaust, the operation can be directly performed on the stop valve. The operation is very convenient. On the one hand, there is no need to additionally install an exhaust pipe on the medium conveying pipeline, thereby preventing pipeline redundancy. On the other hand, the timeliness of the operation is also guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of the utility model;

[0014] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0015] Figure 3 It is a front view of the exhaust rod of the utility model.

[0016] In the figure: 1. valve body; 2. medium inlet; 3. exhaust port; 4. pressing sleeve; 5. sealing seat; 6. through hole; 7. spherical core; 8. slot; 9. clamping head; 10. sealing ring; 11. installation port; 12. pressure cover; 13. step; 14. exhaust handle; 15. exhaust rod; 16. clamping platform; 17. pressing nut. DETAILED DESCRIPTION

[0017] The following is a further description of the embodiments of the present invention in conjunction with the accompanying drawings:

[0018] Embodiment 1:

[0019] like Figure 1 , Figure 2 As shown, the stop valve with exhaust function described in the utility model comprises a valve body 1, a medium inlet 2 is provided on the valve body 1, an exhaust port 3 is provided on the side wall of the medium inlet 2, a pressing sleeve 4 is connected to the port of the exhaust port 3, and sealing seats 5 are installed on the ports on the opposite side of the pressing sleeve 4 and the exhaust port 3, a spherical core 7 is connected between the two sealing seats 5, a through hole 6 connecting the pressing sleeve 4 and the exhaust port 3 is penetrated on the spherical core 7, a mounting port 11 is provided on the side wall of the exhaust port 3, an exhaust rod 15 is rotatably connected in the mounting port 11, the mounting port 11 and the exhaust rod 15 are sealed, the exhaust rod 15 can drive the spherical core 7 to rotate, and an exhaust handle 14 is fixedly connected to the upper end of the exhaust rod 15.

[0020] During use, when the self-priming pump needs to vent water, the exhaust handle 14 is rotated to drive the exhaust rod 15 to rotate, thereby driving the spherical core 7 to rotate, so that the through hole 6 on the spherical core 7 is connected with the pressing sleeve 4 and the exhaust port 3, and the medium discharged by the self-priming pump can enter the exhaust port 3 through the medium inlet 2, and then be discharged through the through hole 6 and the pressing sleeve 4, thereby realizing online exhaust; after the exhaust is completed, the exhaust handle 14 is rotated again to drive the spherical core 7 to rotate, and the side of the spherical core 7 without the through hole 6 blocks the exhaust port 3, so that the self-priming pump can operate normally.

[0021] The stop valve with exhaust function described in the utility model is installed on the medium conveying pipeline when in use. When the self-priming pump needs to divert water and exhaust, the operation can be directly performed on the stop valve. The operation is very convenient. On the one hand, there is no need to additionally install an exhaust pipe on the medium conveying pipeline, thereby preventing pipeline redundancy. On the other hand, the timeliness of the operation is also guaranteed.

[0022] Embodiment 2:

[0023] like Figures 1 to 3 As shown, based on Example 1,

[0024] Furthermore, the lower end of the exhaust rod 15 is provided with a clamping head 9 with a polygonal cross section, and the spherical core 7 is provided with a clamping groove 8 matching the clamping head 9. Both the clamping head 9 and the clamping groove 8 can be regular hexagonal. The clamping head 9 is inserted into the clamping groove 8. The rotation of the clamping head 9 can drive the spherical core 7 to rotate. At the same time, the clamping head 9 can also be separated from the spherical core 7, which is convenient for assembly and disassembly maintenance between the two.

[0025] Furthermore, a clamping platform 16 with a polygonal cross section is provided at the upper end of the exhaust rod 15, a clamping socket matching the clamping platform 16 is penetrated through the exhaust handle 14, and a clamping nut 17 is threadedly connected to the upper end of the exhaust rod 15, and the clamping nut 17 is used to fasten the exhaust handle 14 to the exhaust rod 15, so as to facilitate the assembly and maintenance of the exhaust handle 14;

[0026] Furthermore, the exhaust rod 15 is provided with a step 13, the exhaust rod 15 is sleeved with a sealing ring 10, the end of the mounting port 11 is connected with a gland 12, and the sealing ring 10 is located in the gap formed by the gland 12, the mounting port 11 and the step 13, which has a simple structure and a good sealing effect;

[0027] Furthermore, the gland 12 and the mounting opening 11 are threadedly connected to facilitate the disassembly of the gland 12, thereby facilitating the disassembly and maintenance of the sealing ring 10 and the exhaust rod 15;

[0028] Furthermore, the pressing sleeve 4 and the exhaust port 3 are connected by threads, which facilitates the disassembly of the pressing sleeve 4 and the disassembly and maintenance of the spherical core 7.

[0029] It is particularly noted that in the description of the present invention, the terms "upper" and "lower" etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

Claims

1. A stop valve with exhaust function, comprising a valve body (1), the valve body (1) being provided with a medium inlet (2), characterized in that: An exhaust port (3) is provided on the side wall of the medium inlet (2), a compression sleeve (4) is connected to the end of the exhaust port (3), a sealing seat (5) is installed on the ports on the opposite side of the compression sleeve (4) and the exhaust port (3), a spherical core (7) is connected between the two sealing seats (5), a through hole (6) connecting the compression sleeve (4) and the exhaust port (3) is penetrated through the spherical core (7), a mounting port (11) is provided on the side wall of the exhaust port (3), an exhaust rod (15) is rotatably connected in the mounting port (11), the mounting port (11) and the exhaust rod (15) are sealed, the exhaust rod (15) can drive the spherical core (7) to rotate, and an exhaust handle (14) is fixedly connected to the upper end of the exhaust rod (15).

2. The stop valve with exhaust function according to claim 1, characterized in that: The lower end of the exhaust rod (15) is provided with a clamping head (9) with a polygonal cross section, and the spherical core (7) is provided with a clamping groove (8) matching the clamping head (9).

3. The stop valve with exhaust function according to claim 1, characterized in that: The upper end of the exhaust rod (15) is provided with a clamping platform (16) with a polygonal cross section, the exhaust handle (14) is penetrated with a clamping socket matching the clamping platform (16), and the upper end of the exhaust rod (15) is threadedly connected with a clamping nut (17).

4. The stop valve with exhaust function according to any one of claims 1 to 3, characterized in that: The exhaust rod (15) is provided with a step (13), the exhaust rod (15) is sleeved with a sealing ring (10), the end of the mounting opening (11) is connected with a gland (12), and the sealing ring (10) is located in a gap formed by the gland (12), the mounting opening (11) and the step (13).

5. The stop valve with exhaust function according to claim 4, characterized in that: The gland (12) and the mounting opening (11) are connected by threads.

6. The stop valve with exhaust function according to claim 5, characterized in that: The pressing sleeve (4) and the exhaust port (3) are connected by threads.

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