Valve clack structure and three-way stop valve

Abstract

The valve clack structure comprises a valve clack body, a protruding plugging portion is arranged on the lower side face of the valve clack body, the thickness of the plugging portion is gradually increased from one side to the other side, and the edge of the plugging portion and the edge of the valve clack body are arranged at intervals. The valve clack further comprises a sealing ring arranged around the plugging part, and the sealing ring is fixedly arranged on the lower side face of the valve clack body. According to the valve clack, the sealing ring can be matched with the valve body in a sealing mode, the blocking portion can block the communicating port, when the valve clack is in a closed state, the thin side of the blocking portion corresponds to or is close to the third valve port, and therefore the thin side of the blocking portion leaves the communicating hole at the moment when the valve clack is opened, and the communicating hole is opened; liquid directly enters the third valve port, along with gradual opening of the valve clack, plugging is gradually and completely separated from the communication port, and a comprehensive opening state is formed.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a valve flap structure and a three-way stop valve. Background Art

[0002] The stop valve is generally composed of a valve body, a valve disc, a valve cover, and a valve stem. A valve seat is made between the inlet channel and the outlet channel of the valve body. The valve disc is located in the outlet channel of the valve body. There are mutually matching sealing surfaces between the valve disc and the valve seat. The valve disc is fixed at the lower end of the valve stem, and the upper end of the valve stem passes through the valve cover.

[0003] In the prior art:

[0004] For example, a high-performance aseptic three-way antibiotic stop valve is disclosed in the patent with patent authorization announcement number CN 214578879 U.

[0005] For example, a three-way antibiotic stop valve is disclosed in the patent with patent authorization announcement number CN 210372130 U.

[0006] For example, a three-way antibiotic stop valve is disclosed in the patent with patent authorization announcement number CN 214404713 U.

[0007] The above-mentioned existing three-way stop valve has the following problems: after the valve disc is opened, liquid will flow out in the circumferential direction of the valve disc due to the seal separation from the valve seat. The liquid facing the liquid outlet channel will directly enter the liquid outlet channel, and the other part of the liquid will first collide with the side wall of the valve body and then enter the liquid outlet channel, so that the liquid cannot enter the liquid outlet channel in time. Summary of the invention

[0008] In view of the problems pointed out in the background technology, the utility model proposes a valve flap structure and a three-way stop valve to solve the above technical problems.

[0009] The technical solution of the utility model is achieved in this way:

[0010] A valve flap structure comprises a valve flap body. A protruding blocking portion is provided on the lower side of the valve flap body. The thickness of the blocking portion gradually increases from one side to the other side.

[0011] The utility model is further configured such that the edge of the blocking portion is spaced apart from the edge of the valve flap body.

[0012] The utility model is further configured to further include a sealing ring arranged around the blocking portion, and the sealing ring is fixedly arranged on the lower side surface of the valve flap body.

[0013] The utility model is further configured such that the valve flap body and the blocking portion are both circular and are coaxially arranged.

[0014] A three-way stop valve comprises a valve body, wherein valve port one and valve port two are respectively arranged on the left and right sides of the valve body, valve port three is arranged on the rear side of the valve body, valve port one and valve port two are connected, a connecting port connecting valve port three and valve port one is arranged in the valve body, an installation port is arranged at the upper end of the valve body, a valve cover is arranged at the installation port, a valve stem is connected to the valve cover, and a valve disc is connected to the lower end of the valve cover, and the valve disc is the above-mentioned valve disc structure.

[0015] The utility model is further configured such that the diameter of the communication port is equal to the diameter of the blocking portion.

[0016] The utility model is further configured that a sealing surface cooperating with a sealing ring is provided on the valve body on the upper side of the communication port.

[0017] By adopting the above technical solution, the beneficial effects of the utility model are as follows:

[0018] The valve flap structure and three-way stop valve provided by the utility model have a valve flap, firstly, a sealing ring which can cooperate with the valve body in a seal, and a blocking part which can also form a blockage of the connecting port. When the valve flap is in a closed state, the thinner side of the blocking part corresponds to or is arranged close to the valve port three, so that at the moment when the valve flap is opened, the thinner side of the blockage will leave the connecting hole first, the connecting hole is opened, and the liquid directly enters the valve port three. As the valve flap is gradually opened, the blockage gradually and completely separates from the connecting port, forming a fully open state.

[0019] It can be designed that after the valve stem rotates 90 degrees, the blocking part is completely separated from the connecting hole; when the valve disc is in a closed state, the angle between the thickness change direction of the valve disc and the valve port three is 30 degrees. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 The structure of the utility model is shown in FIG. Figure 1 .

[0022] Figure 2 The structure of the utility model is shown in FIG. Figure 2 .

[0023] Description of the numbers in the accompanying drawings: valve disc body 1, sealing part 2, sealing ring 3, valve body 4, valve port one 5, valve port two 6, valve port three 7, connecting port 8, installation port 9, valve cover 10, valve stem 11. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] For reference Figure 1-2 The utility model is described as follows:

[0026] Embodiment 1: A three-way stop valve comprises a valve body 4, wherein a valve port 1 5 and a valve port 2 6 are respectively arranged on the left and right sides of the valve body 4, a valve port 3 7 is arranged on the rear side of the valve body 4, the valve port 1 5 and the valve port 2 6 are arranged in communication, a connecting port 8 connecting the valve port 3 7 and the valve port 1 5 is arranged in the valve body 4, the connecting port 8 is circular, and the connecting port 8 is arranged vertically, a mounting port 9 is arranged at the upper end of the valve body 4, a valve cover 10 is arranged at the mounting port 9, a valve stem 11 is connected to the valve cover 10, the upper end of the valve stem 11 is located on the upper side of the valve cover 10, the lower end of the valve stem 11 is located inside the valve body 4, a valve flap is connected to the lower end of the valve cover 10, and a sealing surface which cooperates with the valve flap is arranged on the valve body 4 on the upper side of the connecting port 8. The above is the prior art, and the following is the improved technical solution of the present application:

[0027] The valve flap includes a valve flap body 1, which is circular. A protruding plugging portion 2 is provided on the lower side of the valve flap body 1. The plugging portion 2 is circular. The diameter of the plugging portion 2 is smaller than the diameter of the valve flap body 1. The thickness of the plugging portion 2 gradually becomes thicker from one side to the other side. The diameter of the connecting port 8 is equal to the diameter of the plugging portion 2. The plugging portion 2 and the valve flap body 1 are integrally arranged. By adopting the above technical solution, the valve flap body 1 forms a sealing match with the sealing surface at the connecting port 8. At the same time, the plugging portion 2 also enters the connecting port 8 to play a role in plugging the connecting port 8. The plugging portion 2 only plays a certain role in plugging and cannot completely achieve sealing. When the valve flap is opened by the valve stem 11, the valve flap body 1 leaves the sealing surface, and the plugging portion 2 gradually leaves the connecting port 8. The thinner side of the plugging portion 2 leaves the connecting port 8 first, is opened first, and discharges liquid first. In this way, when designing the valve, it is only necessary to design that when the valve flap is opened, the position where the plugging portion 2 is first opened corresponds to the valve port 3 7, so that the liquid can enter the valve port 3 7 preferentially and timely.

[0028] It also includes a sealing ring 3 arranged around the blocking portion 2. The sealing ring 3 is fixedly arranged on the lower side of the valve disc body 1, and the sealing ring 3 forms a sealing fit with the sealing surface.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve flap structure, comprising a valve flap body (1), characterized in that: A protruding blocking portion (2) is provided on the lower side of the valve flap body (1), and the thickness of the blocking portion (2) gradually increases from one side to the other side, with the thinner side of the blocking portion corresponding to the valve port three.

2. A valve flap structure according to claim 1, characterized in that: The edge of the blocking portion (2) is spaced apart from the edge of the valve flap body (1).

3. A valve flap structure according to claim 2, characterized in that: It also comprises a sealing ring (3) arranged around the blocking portion (2), the sealing ring (3) being fixedly arranged on the lower side of the valve flap body (1).

4. A valve flap structure according to claim 1, characterized in that: The valve flap body (1) and the blocking portion (2) are both circular and are coaxially arranged.

5. A three-way stop valve, comprising a valve body (4), wherein a valve port 1 (5) and a valve port 2 (6) are respectively provided on the left and right sides of the valve body (4), a valve port 3 (7) is provided on the rear side of the valve body (4), the valve port 1 (5) and the valve port 2 (6) are connected, a connecting port (8) connecting the valve port 3 (7) and the valve port 1 (5) is provided in the valve body (4), a mounting port (9) is provided at the upper end of the valve body (4), a valve cover (10) is provided at the mounting port (9), a valve stem (11) is connected to the valve cover (10), and a valve disc is connected to the lower end of the valve cover (10), characterized in that: The valve flap is the valve flap structure described in any one of claims 1-4.

6. A three-way stop valve according to claim 5, characterized in that: The diameter of the communication opening (8) is equal to the diameter of the blocking portion (2).

7. A three-way stop valve according to claim 5, characterized in that: A sealing surface cooperating with the sealing ring (3) is provided on the valve body (4) on the upper side of the communication port (8).

Images