Sterile stop valve

Abstract

The utility model belongs to the technical field of stop valves, and particularly relates to a sterile stop valve which comprises a valve body shell. A valve body cavity is formed in the valve body shell; a half-thread sliding rod is connected into the valve body cavity in a sliding mode. The bottom end of the half-thread sliding rod is in rolling connection with a sealing ball. The surface of the valve body shell is fixedly connected with a fixed baffle ring; the surface of the fixed baffle ring is fixedly connected with a connecting rod; the surface of the connecting rod is fixedly connected with a threaded clamping ring. The surface of the half-thread sliding rod is in threaded connection with the surface of a thread clamping ring; the half-thread sliding rod is directly arranged and rotates on the thread clamping ring in a threaded mode, then the half-thread sliding rod is driven to ascend and descend, the sealing ball is driven, the flow speed control function is achieved in the valve body cavity through ascending and descending of the sealing ball, operation is easy, the gear transmission blocking condition is avoided, meanwhile, maintenance is convenient, and use convenience is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stop valves, in particular to an aseptic stop valve. Background Art

[0002] The stop valve, also known as the gate valve, is a forced sealing valve. Therefore, when the valve is closed, pressure must be applied to the valve disc to force the sealing surface to prevent leakage. When the medium enters the valve from under the valve disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the diameter of the valve stem must be large, otherwise the valve stem will bend.

[0003] A Chinese patent with announcement number CN218719022U discloses an aseptic diaphragm one-way stop valve, including a valve body and a control mechanism fixedly connected to the top of the valve body, the control mechanism including a sliding component and a rotating component; through the structural design of gear movement, in order to improve the flexibility and automation of valve body control and reduce the complexity of manual operation, the user can control the flow inside the valve body by opening the first electric push rod, the push of the first electric push rod drives the sliding tooth plate to slide along the inner wall of the fixed groove, further drives the rotation of the gear, the rotation of the gear drives the slider fixedly connected to the valve stem to move up and down along the inner wall of the slide groove through the rotation of the threaded rod, and then drives the valve stem to move up and down inside the valve body, so as to control the flow inside the valve body, so as to realize the control operation to improve the flexibility of valve body control.

[0004] As mentioned above, the patent provides an aseptic diaphragm one-way stop valve. Although it can realize control operations to improve the control flexibility of the valve body, when in use, the rotation of the gear and the rotation of the threaded rod drive the slider fixedly connected to the valve stem to move up and down along the inner wall of the slide groove. The operation is relatively cumbersome, and the gear transmission is prone to transmission jamming, and the corresponding maintenance is also relatively complicated, and the convenience of use is not high.

[0005] Therefore, a sterile stop valve is proposed to address the above problems. Utility Model Content

[0006] In order to make up for the deficiencies of the prior art and solve the above problems, a sterile stop valve is proposed.

[0007] The technical solution adopted by the utility model to solve its technical problems is: an aseptic stop valve described in the utility model comprises a valve body shell; a valve body cavity is opened inside the valve body shell; a semi-threaded sliding rod is slidably connected to the inside of the valve body cavity; a sealing ball is rollingly connected to the bottom end of the semi-threaded sliding rod; a fixed retaining ring is fixedly connected to the surface of the valve body shell; a connecting rod is fixedly connected to the surface of the fixed retaining ring; a threaded retaining ring is fixedly connected to the surface of the connecting rod; the surface of the semi-threaded sliding rod is threadedly connected to the surface of the threaded retaining ring.

[0008] Preferably, the inner wall of the valve body cavity and the surface of the semi-threaded sliding rod are both provided with sealing rings; one end of the semi-threaded sliding rod passes through the threaded clamping ring and extends to the top of the threaded clamping ring; the end of the semi-threaded sliding rod located at the top of the threaded clamping ring is fixedly connected with an adjusting knob.

[0009] Preferably, a protective sleeve is fixedly connected to the surface of the valve body shell; a folding cover plate is hinged on the top of the protective sleeve; and a pulling handle is fixedly connected to the surface of the folding cover plate.

[0010] Preferably, the surface of the valve body shell is connected with a connecting pipe; the end of the connecting pipe away from the valve body shell is fixedly connected with a connecting flange; the interior of the connecting flange is sleeved with a sterilizing filter.

[0011] Preferably, the number of the connecting tubes is set to two, and the two connecting tubes are symmetrically arranged on both sides of the valve body shell; the surfaces of the two connecting tubes are fixedly connected with support frames.

[0012] Preferably, the bottom of the support frame is fixedly connected to a connecting base; a bolt penetrates the surface of the connecting base; and a fixing nut is threadedly connected to the surface of the bolt.

[0013] Beneficial effects of the utility model:

[0014] The utility model provides an aseptic stop valve, which directly arranges a semi-threaded sliding rod and rotates the thread on the threaded clamping ring, thereby driving the semi-threaded sliding rod to rise and fall, and driving a sealing ball. The lifting and lowering of the sealing ball realizes the function of flow rate control in the valve body cavity. The operation is simple, and the occurrence of gear transmission jamming is avoided. At the same time, it is convenient for maintenance and improves the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a three-dimensional diagram of the utility model;

[0017] Figure 2 It is a second stereogram of the utility model;

[0018] Figure 3 It is a stereogram of the front view structure of the utility model;

[0019] Figure 4 It is a three-dimensional diagram of the cross-sectional structure of the valve body shell in the utility model;

[0020] Figure 5 It is an exploded view of a part of the structure of the utility model;

[0021] Legend:

[0022] 1. Valve body shell; 2. Valve body cavity; 3. Semi-threaded sliding rod; 4. Sealing ball; 5. Fixed retaining ring; 6. Connecting rod; 7. Threaded retaining ring; 8. Sealing collar; 9. Protective sleeve; 10. Folding cover plate; 11. Connecting pipe; 12. Connecting flange; 13. Sterile filter; 14. Support retaining frame; 15. Connecting base; 16. Bolt; 17. Fixing nut. DETAILED DESCRIPTION

[0023] 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.

[0024] Specific examples are given below.

[0025] See also Figure 1-Figure 5The utility model provides an aseptic stop valve, comprising a valve body shell 1; a valve body cavity 2 is opened inside the valve body shell 1; a semi-threaded slide rod 3 is slidably connected inside the valve body cavity 2; a sealing ball 4 is rollingly connected to the bottom end of the semi-threaded slide rod 3; a fixed retaining ring 5 is fixedly connected to the surface of the valve body shell 1; a connecting rod 6 is fixedly connected to the surface of the fixed retaining ring 5; a threaded retaining ring 7 is fixedly connected to the surface of the connecting rod 6; the surface of the semi-threaded slide rod 3 is threadedly connected to the surface of the threaded retaining ring 7; when working, the valve body cavity 2 is opened inside the valve body shell 1, and the valve body cavity 2 inside the valve body shell 1 is used to control the circulation of fluid, the semi-threaded slide rod 3 slides up and down inside the valve body cavity 2, and the sealing ball 4 4 can be rolled and connected at the bottom end of the semi-threaded slide rod 3, and the flow rate control function is realized in the valve body cavity 2 by the lifting of the sealing ball 4, the fixed baffle ring 5 is fixed on the surface of the valve body shell 1, and the connecting rod 6 is fixed on the fixed baffle ring 5, and the fixed baffle ring 5 supports the fixed threaded clamping ring 7 through the connecting rod 6, so as to fix the threaded clamping ring 7 on the surface of the valve body shell 1, and the semi-threaded slide rod 3 is threadedly rotated on the threaded clamping ring 7. When the semi-threaded slide rod 3 rotates on the threaded clamping ring 7, it will be lifted and lowered, thereby driving the sealing ball 4 to be lifted and lowered, and blocked in the valve body cavity 2 to control the flow rate. The operation is simple, and the occurrence of the gear transmission jamming is avoided. At the same time, it is convenient for maintenance and improves the convenience of use.

[0026] Further, such as Figure 1 , Figure 4 and Figure 5As shown, the inner wall of the valve body cavity 2 and the surface of the semi-threaded slide rod 3 are both sleeved with a sealing ring 8; one end of the semi-threaded slide rod 3 passes through the threaded retaining ring 7 and extends to the top of the threaded retaining ring 7; the end of the semi-threaded slide rod 3 located at the top of the threaded retaining ring 7 is fixedly connected to an adjusting knob; the surface of the valve body shell 1 is fixedly connected to a protective sleeve 9; the top of the protective sleeve 9 is hinged with a folding cover plate 10; the surface of the folding cover plate 10 is fixedly connected to a pulling handle; the surface of the valve body shell 1 is connected to a connecting pipe 11; the end of the connecting pipe 11 away from the valve body shell 1 is fixedly connected to a connecting flange 12; the interior of the connecting flange 12 is sleeved with a sterilizing filter 13. During operation, two sealing collars 8 are provided, which are respectively sleeved on the inner wall of the valve body cavity 2 and the surface of the semi-threaded slide rod 3 to ensure the internal sealing, so that the semi-threaded slide rod 3 can prevent the fluid inside the valve body cavity 2 from leaking out when the semi-threaded slide rod 3 is lifted or lowered. One end of the semi-threaded slide rod 3 passes through the threaded clamp ring 7, and one end of the semi-threaded slide rod 3 located at the top of the threaded clamp ring 7 is fixedly connected to the adjusting knob, and the semi-threaded slide rod 3 can be driven by the adjusting knob to rotate to realize the lifting and lowering of the semi-threaded slide rod 3, so as to control the lifting and lowering of the sealing ball 4 in the valve body cavity 2, and then control the internal flow rate. The protective sleeve 9 is fixed on the surface of the valve body shell 1 and sleeved on the fixed retaining ring 5 And the outer side of the threaded retaining ring 7, thereby protecting the internal fixed retaining ring 5 and the threaded retaining ring 7. The folding cover plate 10 can be rotated on the surface of the protective sleeve 9, which is convenient for opening to operate the interior. When opening, the folding cover plate 10 is pulled open by pulling the handle. The connecting pipe 11 is connected to the two sides of the valve body shell 1. At the same time, two connecting pipes 11 are set and fixed to the surface of the valve body shell 1. The connecting flange 12 is fixed on the connecting pipe 11, and a sterilizing filter screen 13 is set inside the connecting flange 12. The sterilizing filter screen 13 is used to sterilize and filter the fluid, and the sterilizing filter screen 13 can be disassembled for inspection and maintenance, thereby further improving the adaptability of the work.

[0027] Further, such as Figure 1 and Figure 3 As shown, the number of the connecting pipes 11 is set to two, and the two connecting pipes 11 are symmetrically arranged on both sides of the valve body shell 1; the surfaces of the two connecting pipes 11 are fixedly connected with a support frame 14; the bottom of the support frame 14 is fixedly connected with a connecting base 15; the surface of the connecting base 15 is penetrated by a bolt 16; the surface of the bolt 16 is threadedly connected with a fixing nut 17. When working, two connecting pipes 11 are set and fixed on both sides of the valve body shell 1, and two supporting frames 14 are also set, which are respectively fixed on the two connecting pipes 11, and the connecting base 15 is fixed on the bottom of the supporting frame 14, one end of the bolt 16 is fixed to the wall or the ground, and the other end penetrates the connecting base 15, and the connecting base 15 is fixed to the wall or the ground through the fixing nut 17, thereby completing the fixing of the valve body shell 1.

[0028] Working principle: Since the above patent provides an aseptic diaphragm one-way stop valve, although it can realize the control operation to improve the control flexibility of the valve body, when in use, the slider fixedly connected to the valve stem is driven to move up and down along the inner wall of the slide groove by the rotation of the gear and the rotation of the threaded rod, the operation is relatively cumbersome, and the gear transmission is prone to transmission jamming, and the corresponding maintenance is also relatively complicated, and the convenience of use is not high. When working, the valve body cavity 2 is opened inside the valve body shell 1, and the valve body cavity 2 inside the valve body shell 1 is used to control the circulation of the fluid, and the semi-threaded slide rod 3 slides up and down inside the valve body cavity 2, and the sealing ball 4 can be rollingly connected at the bottom end of the semi-threaded slide rod 3, and the lifting of the sealing ball 4 realizes the function of flow rate control in the valve body cavity 2, and the fixed retaining ring 5 is fixed on the surface of the valve body shell 1, the connecting rod 6 is fixed on the fixed baffle ring 5, and the fixed baffle ring 5 supports the fixed threaded clamping ring 7 through the connecting rod 6, so as to fix the threaded clamping ring 7 on the surface of the valve body shell 1, and the semi-threaded slide rod 3 is threadedly rotated on the threaded clamping ring 7. When the semi-threaded slide rod 3 rotates on the threaded clamping ring 7, it will be lifted and lowered, thereby driving the sealing ball 4 to be lifted and lowered, blocked in the valve body cavity 2, and the flow rate is controlled. The operation is simple, and the occurrence of gear transmission jamming is avoided. At the same time, it is convenient for maintenance and improves the convenience of use. Two sealing rings 8 are set, which are respectively sleeved on the inner wall of the valve body cavity 2 and the surface of the semi-threaded slide rod 3 to ensure the internal sealing, so that the semi-threaded slide rod 3 can prevent the fluid inside the valve body cavity 2 from flowing out when it is lifted and lowered. Leakage, one end of the semi-threaded slide rod 3 passes through the threaded retaining ring 7, and the end of the semi-threaded slide rod 3 located at the top of the threaded retaining ring 7 is fixedly connected to the adjusting knob, and the semi-threaded slide rod 3 can be driven by the adjusting knob to rotate to realize the lifting and lowering of the semi-threaded slide rod 3, so as to control the lifting and lowering of the sealing ball 4 in the valve body cavity 2, and then control the internal flow rate. The protective sleeve 9 is fixed to the surface of the valve body shell 1, and is sleeved on the outside of the fixed retaining ring 5 and the threaded retaining ring 7, so as to protect the internal fixed retaining ring 5 and the threaded retaining ring 7. The folding cover plate 10 can be rotated on the surface of the protective sleeve 9, which is convenient for opening to operate the interior. When opening, the folding cover plate 10 is pulled open by pulling the handle. The connecting pipe 11 is connected to both sides of the valve body shell 1, and two connecting pipes are set at the same time. 11, fixed to the surface of the valve body shell 1, the connecting flange 12 is fixed on the connecting pipe 11, and a sterilizing filter 13 is set inside the connecting flange 12, and the sterilizing filter 13 is used to sterilize and filter the fluid, and the sterilizing filter 13 can be disassembled for inspection and maintenance, further improving the adaptability of the work, two connecting pipes 11 are set, and fixed on both sides of the valve body shell 1, and two supporting retaining frames 14 are also set, which are fixed on the two connecting pipes 11 respectively, and the connecting base 15 is fixed to the bottom of the supporting retaining frame 14, one end of the bolt 16 is fixed to the wall or the ground, and the other end passes through the connecting base 15, and the connecting base 15 is fixed to the wall or the ground by the fixing nut 17, thereby completing the fixing of the valve body shell 1, and by directly setting the semi-threaded sliding rod 3,The threaded clamp ring 7 rotates, which in turn drives the semi-threaded slide rod 3 to move up and down, and drives the sealing ball 4. The lifting and lowering of the sealing ball 4 realizes the function of flow rate control in the valve body cavity 2. The operation is simple, avoiding the occurrence of gear transmission jamming, and is also convenient for maintenance, which improves the convenience of use.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A sterile stop valve, characterized in that: The valve body shell (1) comprises a valve body cavity (2) formed inside the valve body shell (1); a semi-threaded slide rod (3) is slidably connected inside the valve body cavity (2); a sealing ball (4) is rollingly connected to the bottom end of the semi-threaded slide rod (3); a fixed retaining ring (5) is fixedly connected to the surface of the valve body shell (1); a connecting rod (6) is fixedly connected to the surface of the fixed retaining ring (5); a threaded retaining ring (7) is fixedly connected to the surface of the connecting rod (6); and the surface of the semi-threaded slide rod (3) is threadedly connected to the surface of the threaded retaining ring (7).

2. A sterile stop valve according to claim 1, characterized in that: The inner wall of the valve body cavity (2) and the surface of the semi-threaded slide rod (3) are both sleeved with a sealing ring (8); one end of the semi-threaded slide rod (3) passes through the threaded clamping ring (7) and extends to the top of the threaded clamping ring (7); and one end of the semi-threaded slide rod (3) located at the top of the threaded clamping ring (7) is fixedly connected to an adjusting knob.

3. The aseptic stop valve according to claim 1, characterized in that: A protective sleeve (9) is fixedly connected to the surface of the valve body shell (1); a folding cover plate (10) is hinged on the top of the protective sleeve (9); and a pulling handle is fixedly connected to the surface of the folding cover plate (10).

4. The aseptic stop valve according to claim 1, characterized in that: The surface of the valve body shell (1) is connected to a connecting pipe (11); one end of the connecting pipe (11) away from the valve body shell (1) is fixedly connected to a connecting flange (12); and a sterilizing filter (13) is sleeved inside the connecting flange (12).

5. The aseptic stop valve according to claim 4, characterized in that: The number of the connecting tubes (11) is set to two, and the two connecting tubes (11) are symmetrically arranged on both sides of the valve body shell (1); the surfaces of the two connecting tubes (11) are fixedly connected with support frames (14).

6. The aseptic stop valve according to claim 5, characterized in that: The bottom of the support frame (14) is fixedly connected to a connecting base (15); a bolt (16) penetrates the surface of the connecting base (15); and a fixing nut (17) is threadedly connected to the surface of the bolt (16).

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