CN213929624U

CN213929624U - Valve manipulator

Info

Publication number: CN213929624U
Application number: CN202121438212.XU
Authority: CN
Inventors: 皮幼林
Original assignee: Shenzhen Meian Technology Co ltd
Current assignee: Shenzhen Meian Technology Co ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-08-10
Anticipated expiration: 2031-06-28

Abstract

The utility model belongs to the technical field of the valve anchor clamps, especially, relate to a valve manipulator. The valve manipulator comprises a control panel, a driving component, a buzzer, a shroud ring for clamping a valve fixing part, a clamping jaw for clamping a valve handle, and an installation shell which is connected with the shroud ring and is provided with an installation space; the output end of the driving component is connected with the clamping jaw, and the driving component is used for driving the clamping jaw to drive the valve handle to rotate relative to the valve fixing part; the buzzer, the control panel and the driving assembly are all installed in the installation space, the buzzer is connected with an external probe through the control panel, and the driving assembly is connected with the control panel. The utility model discloses in, this handle anchor clamps can realize the function of opening and close of valve automatically, and compact structure, low in manufacturing cost.

Description

Valve manipulator

Technical Field

The utility model belongs to the technical field of the valve anchor clamps, especially, relate to a valve manipulator.

Background

The pipeline can transport media such as liquid and gas, has the advantages of low transportation cost, high safety and the like, and is widely applied to various fields. In addition, the valve is widely applied to pipelines as a tool for controlling the on-off of the pipeline, adjusting the flow rate of the pipeline and the like. The pipeline can take place the accident of leaking at daily operation in-process, need close the pipeline in time through the valve this moment, avoids the medium to leak too much in the pipeline, and accidents such as polluted environment, extravagant resource that cause. However, in the prior art, the opening and closing of the valve is usually realized by manually rotating a valve handle, and the problems of untimely closing, low automation degree and the like exist.

Disclosure of Invention

The utility model discloses to the closing of the pipeline that manual rotation valve handle realized among the prior art, the technical problem such as closing untimely, degree of automation low of its existence provides a valve manipulator.

In view of the above technical problem, an embodiment of the present invention provides a valve manipulator, including a control panel, a driving assembly, a buzzer, a band for clamping a valve fixing portion, a clamping jaw for clamping a valve handle, and an installation shell connected to the band and provided with an installation space; the output end of the driving component is connected with the clamping jaw, and the driving component is used for driving the clamping jaw to drive the valve handle to rotate relative to the valve fixing part; the buzzer, the control panel and the driving assembly are all installed in the installation space, the buzzer is connected with an external probe through the control panel, and the driving assembly is connected with the control panel

Optionally, the driving assembly comprises a motor, a battery and a clutch all mounted in the mounting shell; the battery is connected the motor with the control panel, the output of motor is connected the input of clutch, the output of clutch is connected the clamping jaw.

Optionally, the clutch comprises an input gear, a reset gear, a transmission gear, an output gear, a reset shaft, a transmission shaft, an output shaft and an elastic member; the input gear is installed at the output end of the motor, the reset gear is rotatably installed in the installation space through the reset shaft, the transmission gear is rotatably installed in the installation space through a transmission shaft, the output gear is rotatably installed in the installation space through the output shaft, and the output shaft is connected with the clamping jaw; the input gear is meshed with the reset gear, the reset gear is meshed with the transmission gear, and the transmission gear is meshed with the output gear;

the installation shell is provided with a reset button, the elastic piece is sleeved on the reset shaft, one end of the elastic piece is abutted to the inner side wall of the installation space, and the reset shaft is far away from one end of the elastic piece and abutted to the reset button.

Optionally, the transmission gear comprises a first gear and a second gear connected with the first gear, and the diameter of the first gear is larger than that of the second gear; the first gear and the second gear are both sleeved on the transmission shaft, the first gear is meshed with the reset gear, and the second gear is meshed with the output gear.

Optionally, the mounting shell comprises a lower shell and an upper shell mounted on the lower shell, and the mounting space is formed between the lower shell and the upper shell; the clutch is still including connecting casing just is located down case lid in the installation space, the case lid with form inner space between the casing down, input gear reset gear drive gear output gear reset the axle the transmission shaft output shaft and the elastic component is all installed in the inner space.

Optionally, the driving assembly further comprises a decoding shaft and a decoding gear sleeved on the decoding shaft, one end of the decoding shaft is connected with the inner side wall of the installation space, and the other end of the decoding shaft is connected with the control board; the decoder gear is engaged with the input gear.

Optionally, the band includes a fixing member and a flexible clamping ring mounted on the mounting shell, a first fixing hole and a second fixing hole are respectively formed at two opposite ends of the flexible clamping ring, and the flexible clamping ring is connected to the valve fixing portion through the fixing member passing through the first fixing hole and inserted into the second fixing hole.

Optionally, the valve manipulator further comprises a battery cover connected to the mounting case, and the battery is mounted in the mounting space through the battery cover.

Optionally, the clamping jaw is provided with a fixing ring with a mounting hole, and a first clamping arm and a second clamping arm which are mounted at two opposite ends of the fixing ring; the fixing ring is connected with the output end of the driving assembly through the mounting hole.

Optionally, the valve manipulator further comprises a fixing ring provided with a groove, the fixing ring is mounted on the valve fixing portion, and the wrapping hoop is clamped in the groove.

The utility model discloses in, drive assembly's output is connected the clamping jaw, just drive assembly is used for the drive the clamping jaw drives the valve handle for the valve fixed part rotates, drive assembly connects the control panel, thereby the control panel passes through drive assembly automatic control the clamping jaw drives the valve handle and rotates, and then has realized the function of automatic start-stop valve, has improved this valve manipulator's suitability and convenience. In addition, the buzzer is connected with an external probe through the control panel, and when the control panel detects that the pipeline leaks through the probe, on one hand, the control panel controls the buzzer to give an alarm to remind maintenance personnel to maintain the pipeline in time; on the other hand, the control panel passes through drive assembly control the clamping jaw drives the valve handle and rotates to reach the technological effect of in time closing the pipeline, avoid the accident that the pipeline takes place to leak. In addition, the valve manipulator has a compact structure and low manufacturing cost.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is an exploded schematic view of a valve manipulator according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a valve manipulator according to an embodiment of the present invention;

fig. 3 is a front view of a valve manipulator according to an embodiment of the present invention.

The reference numerals in the specification are as follows:

1. a control panel; 2. a drive assembly; 21. a motor; 22. a battery; 23. a clutch; 231. an input gear; 232. a reset gear; 233. a transmission gear; 2331. a first gear; 2332. a second gear; 234. an output gear; 235. a reset shaft; 236. a drive shaft; 237. an output shaft; 238. an elastic member; 239. a box cover; 24. decoding the shaft; 25. decoding the gear; 3. a buzzer; 4. a clamping jaw; 41. a fixing ring; 42. a first clamping arm; 43. a second clamping arm; 5. wrapping and hooping; 51. a fixing member; 52. a flexible snap ring; 6. mounting a shell; 61. a reset button; 62. a lower housing; 63. an upper housing; 7. a battery cover; 8. a stationary ring; 101. a valve handle; 102. a valve fixing portion.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 3, an embodiment of the present invention provides a valve manipulator, which includes a control board 1, a driving assembly 2, a buzzer 3, a clamping jaw 4 for clamping a valve handle 101, a band 5 for clamping a valve fixing portion 102, and an installation shell 6 connected to the band 5 and having an installation space; the output end of the driving component 2 is connected (in threaded connection, in screw connection, etc.) with the clamping jaw 4, and the driving component 2 is used for driving the clamping jaw 4 to drive the valve handle 101 to rotate relative to the valve fixing part 102; the buzzer 3, the control panel 1 and the driving assembly 2 are all installed (installed by screw connection and the like) in the installation space, the buzzer 3 is connected (connected by cable and the like) with an external probe through the control panel 1, and the driving assembly 2 is connected (connected by cable and the like) with the control panel 1; it can be understood that the external probe can be used for detecting whether the pipeline leaks, if the control panel 1 detects that the pipeline leaks through the external probe, the control panel 1 controls the buzzer 3 to give an alarm, so that a maintenance worker can timely maintain the pipeline after obtaining the alarm sound, and when the medium in the pipeline is liquid, the external probe can detect the leakage condition of the pipeline liquid; when the medium in the pipeline is gas, the external probe can detect the leakage condition of the pipeline gas. The valve fixing part 102 includes, but is not limited to, a valve body, a pipe on which a valve is installed, and the like; the valve handle 101 is rotatably connected to the valve fixing part 102 and is used for controlling the opening and closing of the valve; including but not limited to ball valve bodies, flow valve bodies, etc.

The utility model discloses in, drive assembly 2's output is connected clamping jaw 4, just drive assembly 2 is used for the drive clamping jaw 4 drives valve handle 101 for the fixed 102 portions of valve rotate, drive assembly 2 connects control panel 1, thereby control panel 1 passes through 2 automatic control of drive assembly clamping jaw 4 drives valve handle 101 and rotates, and then has realized the function of automatic start-stop valve, has improved this valve manipulator's suitability and convenience. In addition, the buzzer 3 is connected with an external probe through the control panel 1, and when the control panel 1 detects that the pipeline leaks through the external probe, on one hand, the control panel 1 controls the buzzer 3 to give an alarm to remind maintenance personnel to maintain the pipeline in time; on the other hand, the control panel 1 controls the clamping jaw 4 to drive the valve handle 101 to rotate through the driving component 2, so that the technical effect of closing the pipeline in time is achieved, and the accident of leakage of the pipeline is avoided. In addition, the valve manipulator has a compact structure and low manufacturing cost.

In one embodiment, as shown in fig. 1, the driving assembly 2 includes a motor 21, a battery 22 and a clutch 23, all mounted in the mounting case 6; the battery 22 is connected with the motor 21 and the control board 1, the output end of the motor 21 is connected with the input end of the clutch 23, and the output end of the clutch 23 is connected with the clamping jaw 4. As can be understood, the clutch 23 has a manual gear and an automatic gear, and when the clutch 23 is in the automatic gear, the motor 21 is connected with the clamping jaw 4 through the clutch 23, so that the technical effect that the control board 1 automatically controls the rotation of the clamping jaw 4 through the motor 21 is achieved; when the clutch 23 is in the manual gear, the clutch 23 is separated from the motor 21, so that the clamping jaw 4 is separated from the motor 21, and the technical effect of opening and closing the valve can be achieved by manually rotating the clamping jaw 4 or the valve handle 101. In this embodiment, the design of the clutch 23 enables the valve manipulator to have two gears, namely a manual gear and an automatic gear, so that the applicability of the valve manipulator is improved.

In addition, the battery 22 includes, but is not limited to, a lithium battery 22, etc.; and the battery 22 can provide electric power for the motor 21 and the control panel 1, an external power supply is not needed, and the convenience and the practicability of the valve manipulator are improved.

In one embodiment, as shown in fig. 1, the clutch 23 includes an input gear 231, a reset gear 232, a transmission gear 233, an output gear 234, a reset shaft 235, a transmission shaft 236, an output shaft 237, and an elastic member 238; the input gear 231 is installed at the output end of the motor 21, the reset gear 232 is rotatably installed in the installation space through the reset shaft 235, the transmission gear 233 is rotatably installed in the installation space through the transmission shaft 236, the output gear 234 is rotatably installed in the installation space through the output shaft 237, and the output shaft 237 is connected with the clamping jaw 4; the input gear 231 engages the reset gear 232, the reset gear 232 engages the transmission gear 233, and the transmission gear 233 engages the output gear 234; it can be understood that the input gear 231 is sleeved on the output shaft 237 of the motor 21, the reset gear 232 is sleeved on the reset shaft 235, the transmission gear 233 is sleeved on the transmission shaft 236, the output gear 234 is sleeved on the output shaft 237, and opposite ends of the reset shaft 235, the transmission shaft 236 and the output shaft 237 are installed in the installation space through bearing rotating shafts.

The mounting shell 6 is provided with a reset button 61, the elastic piece 238 is sleeved on the reset shaft 235, one end of the elastic piece 238 is abutted against the inner side wall of the mounting space, and one end of the reset shaft 235 far away from the elastic piece 238 is abutted against the reset button 61. As can be appreciated. The upper end of the reset shaft 235 abuts against the reset button 61, and the lower end of the reset shaft 235 abuts against the inner side wall of the installation space through the elastic member 238. Specifically, when the reset button 61 is pressed, the reset shaft 235 drives the reset gear 232 to move downwards to be engaged with the transmission gear 233, and simultaneously, the reset shaft 235 moving downwards compresses the elastic member 238 downwards, at this time, the valve manipulator is in an automatic gear position, and the working principle of the valve manipulator in the automatic gear position is as follows: the motor 21 sequentially drives the input gear 231, the reset gear 232, the transmission gear 233, the output gear 234 and the output shaft 237 to rotate, and the output shaft 237 drives the valve handle 101 to rotate through the clamping jaw 4, so that the function of automatic opening and closing of the valve is realized.

When the reset button 61 is pressed again, the resilience of the compressed elastic member 238 will drive the reset shaft 235 to move upwards, and the reset shaft 235 moving upwards will drive the reset gear 232 to disengage from the transmission gear 233, at this time, the valve manipulator is in the manual gear position. In the embodiment, the valve manipulator has a compact structure and small installation space; and the manual gear and the automatic gear can be switched by pressing the reset key, and the operation is simple.

In one embodiment, as shown in fig. 1, the elastic member 238 is a coil spring, and the inner diameter of the coil spring gradually increases toward the end away from the return gear 232 from the end of the return gear 232. It is understood that the coil spring has a structure in which the upper end has a small diameter and the lower end has a large diameter. Specifically, when the reset button 61 is pressed downwards, the reset shaft 235 drives the upper end of the coil spring to be pressed into the lower end of the coil spring, so that the up-and-down stability of the reset shaft 235 is improved. In one embodiment, as shown in fig. 1, the transmission gear 233 includes a first gear 2331 and a second gear 2332 connected (welded, screwed, etc.) to the first gear 2331, the diameter of the first gear 2331 is larger than the diameter of the second gear 2332; the first gear 2331 and the second gear 2332 are sleeved on the transmission shaft 236, the first gear 2331 is engaged with the reset gear 232, and the second gear 2332 is engaged with the output gear 234. Further, the diameter of the first gear 2331 is larger than that of the reset gear 232, the diameter of the output gear 234 is larger than that of the second gear 2332, and the clutch 23 can perform a clutch function and a speed reduction and torque increase function, so that the motor 21 can output a large acting force through the clutch 23, and the applicability of the clutch 23 is improved. In addition, the driving gear 233 includes a first gear 2331 and a second gear 2332 connected to each other, further improving the compactness of the valve robot.

In one embodiment, as shown in fig. 1 to 3, the mounting shell 6 includes a lower shell 62 and an upper shell 63 mounted (by screwing, clipping, etc.) on the lower shell 62, and the mounting space is formed between the lower shell 62 and the upper shell 63; the clutch 23 further includes a case cover 239 connected (screwed, clamped, etc.) to the lower case 62 and located in the installation space, an inner space is formed between the case cover 239 and the lower case 62, and the input gear 231, the reset gear 232, the transmission gear 233, the output gear 234, the reset shaft 235, the transmission shaft 236, the output shaft 237 and the elastic member 238 are all installed in the inner space. It is to be understood that lubricating oil, grease, or the like for lubricating the input gear 231, the return gear 232, the transmission gear 233, and the output gear 234 is also provided in the internal space. In this embodiment, the input gear 231, the reset gear 232, the transmission gear 233, the output gear 234, the reset shaft 235, the transmission shaft 236, the output shaft 237 and the elastic member 238 are all installed in the inner space by the box cover 239, so that parts such as the motor 21 and the battery 22 are prevented from being polluted by lubricating oil and the like in the inner space, and the cleanliness of the valve manipulator is improved. The upper housing 63, the lower housing 62, and the cover 239 are designed to facilitate the assembly and disassembly of the valve robot assembly.

In an embodiment, as shown in fig. 1, the driving assembly 2 further includes a decoding shaft 24 and a decoding gear 25 sleeved on the decoding shaft 24, one end of the decoding shaft 24 is connected to the inner side wall of the installation space, and the other end of the decoding shaft 24 is connected to the control board 1; the decode gear 25 is engaged with the input gear 231. It is understood that the decode shaft 24 and the decode gear 25 are also installed in the inner space, and the decode shaft 24 is connected to an encoder on the control board 1. Specifically, the motor 21 drives the decoding gear 25 and the decoding shaft 24 to rotate through the input gear 231, that is, the control board 1 can measure the rotation speed of the motor 21 through the rotation of the decoding shaft 24. Further, when the control board 1 measures that the rotating speed of the decoding shaft 24 is too high (that is, the rotating speed of the output end of the motor 21 is too high), the control board 1 controls the motor 21 to stop rotating, so that an accident that the internal circuit components of the motor 21 are burnt due to too large output current of the motor 21 is avoided, the safety of the valve manipulator is improved, and the service life of the valve manipulator is prolonged.

In addition, on one hand, the input gear 231 can drive the clamping jaw 4 to rotate sequentially through the reset gear 232, the transmission gear 233, the output gear 234 and the output shaft 237; on the other hand, the input gear 231 can drive the decoding shaft 24 to rotate through the decoding gear 25; therefore, the control board 1 can obtain the number of turns of the clamping jaw 4 through the decoding shaft 24 and the decoding gear 25, and the precision of the output shaft 237 driving the clamping jaw 4 to rotate can be accurately controlled through the control board 1.

In one embodiment, as shown in fig. 1 to 3, the valve robot further includes a battery cover 7 connected to the mounting case 6, and the battery 22 is mounted in the mounting space through the battery cover 7. Specifically, a window communicated with the mounting space is arranged on the lower shell 62, the battery cover 7 is connected to the inner side wall of the opening, and the lower end of the shell of the battery 22 is abutted to the inner side wall of the battery cover 7. In this embodiment, the battery cover 7 is designed to facilitate replacement of the battery 22.

In one embodiment, as shown in fig. 1 to 3, the band 5 includes a fixing member 51 and a flexible snap ring 52 mounted on the mounting shell 6, opposite ends of the flexible snap ring 52 are respectively provided with a first fixing hole and a second fixing hole, and the flexible snap ring 52 is connected to a valve fixing portion 102 through the fixing member 51 inserted through the first fixing hole and the second fixing hole. It is understood that the fixing member 51 includes, but is not limited to, a screw, a bolt, etc.; the mounting shell 6 is mounted on the pipeline through the flexible hoop.

In one embodiment, as shown in fig. 1 to 3, the clamping jaw 4 is provided with a fixing ring 41 having a mounting hole, and a first clamping arm 42 and a second clamping arm 43 mounted at opposite ends of the fixing ring 41; the fixing ring 41 is connected (screwed, etc.) to the output end of the driving assembly 2 through the mounting hole. It is understood that the first snap-in arm 42, the second snap-in arm 43 and the fixing ring 41 are of an integrally formed structure; and the output shaft 237 is connected to the valve handle 101 through the first and

second snap arms

42 and 43, and drives the valve handle 101 to rotate. In this embodiment, the clamping jaw 4 is connected to the output shaft 237 through the mounting hole, so that the clamping jaw 4 of different types and different types can be replaced by different valve handles 101, and the valve manipulator can be applied to different valves, thereby improving the universality of the valve manipulator.

In one embodiment, as shown in fig. 1 to 3, the band 5 includes a fixing member 51 and a flexible snap ring 52 mounted on the mounting shell 6, opposite ends of the flexible snap ring 52 are respectively provided with a first fixing hole and a second fixing hole, and the flexible snap ring 52 is connected to a valve fixing portion 102 through the fixing member 51 inserted through the first fixing hole and the second fixing hole. It is understood that the fixing member 51 includes, but is not limited to, a screw, a bolt, etc.; the mounting shell 6 is mounted on the pipeline through the flexible hoop. In this embodiment, the installation threshold of the band 5 is low, and the installation of the flexible snap ring 52 on the valve fixing portion 102 can be completed without using any tool, replacing the original pipeline, and professional personnel; and the installation time of the shroud ring 5 is short, and a user can install the shroud ring by himself in a quick connection mode.

In one embodiment, as shown in fig. 1 to 3, the valve manipulator further includes a fixing ring 8 having a groove, the fixing ring 8 is mounted on the valve fixing portion 102, and the band 5 (i.e., the flexible clamping ring 52) is clamped in the groove. The retainer plate 8 can be welded on the pipeline, the flexible clamping ring 52 is clamped in the groove through the fixing piece 51, the phenomenon that the flexible clamping ring 52 is directly clamped on the pipeline to slip is avoided, and therefore the installation stability of the valve manipulator is improved.

The above description is only an example of the valve manipulator of the present invention, and should not be construed as limiting the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A valve manipulator is characterized by comprising a control panel, a driving assembly, a buzzer, a shroud ring for clamping a valve fixing part, a clamping jaw for clamping a valve handle and an installation shell which is connected with the shroud ring and provided with an installation space; the output end of the driving component is connected with the clamping jaw, and the driving component is used for driving the clamping jaw to drive the valve handle to rotate relative to the valve fixing part; the buzzer, the control panel and the driving assembly are all installed in the installation space, the buzzer is connected with an external probe through the control panel, and the driving assembly is connected with the control panel.

2. The valve manipulator of claim 1, wherein the drive assembly includes a motor, a battery, and a clutch, all mounted in the mounting housing; the battery is connected the motor with the control panel, the output of motor is connected the input of clutch, the output of clutch is connected the clamping jaw.

3. The valve manipulator of claim 2, wherein the clutch comprises an input gear, a reset gear, a transmission gear, an output gear, a reset shaft, a transmission shaft, an output shaft, and an elastic member; the input gear is installed at the output end of the motor, the reset gear is rotatably installed in the installation space through the reset shaft, the transmission gear is rotatably installed in the installation space through a transmission shaft, the output gear is rotatably installed in the installation space through the output shaft, and the output shaft is connected with the clamping jaw; the input gear is meshed with the reset gear, the reset gear is meshed with the transmission gear, and the transmission gear is meshed with the output gear;

4. The valve manipulator of claim 3, wherein the drive gear comprises a first gear and a second gear coupled to the first gear, the first gear having a diameter greater than a diameter of the second gear; the first gear and the second gear are both sleeved on the transmission shaft, the first gear is meshed with the reset gear, and the second gear is meshed with the output gear.

5. The valve manipulator of claim 3, wherein the mounting case comprises a lower case and an upper case mounted on the lower case, the lower case and the upper case forming the mounting space therebetween; the clutch is still including connecting casing just is located down case lid in the installation space, the case lid with form inner space between the casing down, input gear reset gear drive gear output gear reset the axle the transmission shaft output shaft and the elastic component is all installed in the inner space.

6. The valve manipulator of claim 3, wherein the driving assembly further comprises a decoding shaft and a decoding gear sleeved on the decoding shaft, one end of the decoding shaft is connected with the inner side wall of the installation space, and the other end of the decoding shaft is connected with the control plate; the decoder gear is engaged with the input gear.

7. The valve robot of claim 2, further comprising a battery cover coupled to the mounting case, the battery being mounted in the mounting space through the battery cover.

8. The valve manipulator of claim 2, wherein the band includes a fixing member and a flexible snap ring mounted on the mounting housing, opposite ends of the flexible snap ring are respectively provided with a first fixing hole and a second fixing hole, and the flexible snap ring is connected to the valve fixing portion by the fixing member passing through the first fixing hole and being inserted into the second fixing hole.

9. The valve manipulator of claim 1, wherein the jaws are provided with a fixed ring of mounting holes, and first and second snap arms mounted at opposite ends of the fixed ring; the fixing ring is connected with the output end of the driving assembly through the mounting hole.

10. The valve manipulator of claim 1, further comprising a retainer ring having a groove, wherein the retainer ring is mounted on the valve retainer portion, and the band is engaged with the groove.