阅读说明：本技术 一种防水锤球阀 (Water hammer-proof ball valve ) 是由 李祥庆 于 2020-08-07 设计创作，主要内容包括：本发明公开了一种防水锤球阀,包括有阀体,阀体上端设有中台,中台上转动穿设有阀杆,其特征在于：中台外周上固定套设有定位盘,定位盘外周上转动套设有减速套,且减速套与定位盘之间设有转角限位结构和复位结构,减速套外周套设有减速配合的固定套,固定套与定位盘固定相连；减速套与定位盘的上部之间设有间隔,该间隔内转动设有驱动圈,驱动圈上端连接有驱动盘,驱动盘与阀杆传动相连,驱动圈上设有缺口,缺口内匹配设有滚柱,且间隔对应的定位盘外周面上设有第一波纹槽,间隔对应的减速套内周面上设有第二波纹槽,滚柱与第一波纹槽、第二波纹槽相匹配。本发明有效防止水锤的产生,延长球阀使用寿命。(The invention discloses a water hammer-proof ball valve, which comprises a valve body, wherein the upper end of the valve body is provided with a middle platform, a valve rod is rotatably arranged on the middle platform in a penetrating way, and the water hammer-proof ball valve is characterized in that: a positioning disc is fixedly sleeved on the periphery of the middle table, a speed reducing sleeve is rotatably sleeved on the periphery of the positioning disc, a corner limiting structure and a reset structure are arranged between the speed reducing sleeve and the positioning disc, a fixed sleeve in speed reducing fit is sleeved on the periphery of the speed reducing sleeve, and the fixed sleeve is fixedly connected with the positioning disc; an interval is arranged between the upper part of the speed reducing sleeve and the upper part of the positioning disc, a driving ring is rotationally arranged in the interval, the upper end of the driving ring is connected with a driving disc, the driving disc is connected with the valve rod in a transmission way, a notch is arranged on the driving ring, a roller is matched in the notch, a first corrugated groove is arranged on the outer peripheral surface of the positioning disc corresponding to the interval, a second corrugated groove is arranged on the inner peripheral surface of the speed reducing sleeve corresponding to the interval, and the roller is matched with the first corrugated groove and the second corrugated. The invention effectively prevents water hammer and prolongs the service life of the ball valve.)

1. The utility model provides a waterproof hammer ball valve, is equipped with the spheroid in the valve body including the valve body, spheroid and the sealed cooperation of disk seat, and the valve body upper end is equipped with the well platform, and the valve rod is worn to be equipped with in the rotation of well bench, and the valve rod lower extreme links to each other with the spheroid transmission, and the valve rod upper end is connected with handle, its characterized in that: a positioning disc is fixedly sleeved on the periphery of the middle table, a speed reducing sleeve is rotatably sleeved on the periphery of the positioning disc, a corner limiting structure and a resetting structure are arranged between the speed reducing sleeve and the positioning disc, a fixed sleeve in speed reducing fit is sleeved on the periphery of the speed reducing sleeve, and the fixed sleeve is fixedly connected with the positioning disc; the interval is arranged between the upper part of the speed reducing sleeve and the upper part of the positioning disc, a driving ring is rotationally arranged in the interval, the upper end of the driving ring is connected with the driving disc, the driving disc is in transmission connection with the valve rod, a notch is arranged on the driving ring, a roller is matched in the notch, a first corrugated groove is arranged on the outer peripheral surface of the positioning disc corresponding to the interval, a second corrugated groove is arranged on the inner peripheral surface of the speed reducing sleeve corresponding to the interval, the roller is matched with the first corrugated groove and the second corrugated groove, the distance between the top of the first corrugated groove and the top of the second corrugated groove is smaller than the width of the cross section of the roller, and the distance between the bottom of the first corrugated groove and the top of the second corrugated groove and the distance between the top of the first corrugated.

2. The waterproof hammer ball valve of claim 1, wherein: the lower end of the positioning plate is provided with a step, and the lower end of the corresponding speed reducing sleeve is arranged on the step.

3. The waterproof hammer ball valve of claim 2, wherein: the corner limiting structure comprises an arc limiting groove arranged on the lower end face of the speed reducing sleeve and a limiting rod arranged on the upper end face of the step of the positioning disc, and the limiting rod is arranged in the limiting groove.

4. The waterproof hammer ball valve of claim 2, wherein: the reset structure is a reset spring, an arc-shaped spring groove is formed between the lower end face of the corresponding speed reducing sleeve and the upper end face of the step of the positioning disc, the reset spring is arranged in the arc-shaped spring groove, and the two ends of the reset spring simultaneously support against the positioning disc and the speed reducing sleeve in the initial state of the speed reducing sleeve.

Technical Field

The invention relates to an improved ball valve, in particular to an improved water hammer resistant ball valve.

Background

Traditional ball valve is by extensive application in trades such as petroleum refining, long-distance pipeline, chemical industry, papermaking, pharmacy, water conservancy, electric power, municipal administration, steel, gas, traditional ball valve is opening or the process of closing, if open and close speed too fast, then forms the water hammer easily, and the disk seat is easy not hard up or damages under the influence of water hammer, finally influences the leakproofness and the life of valve.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a waterproof hammer ball valve which can prevent water hammer and prolong the service life.

In order to solve the technical problems, the invention is realized by adopting the following technical scheme: this kind of water hammer ball valve, including the valve body, be equipped with the spheroid in the valve body, spheroid and the sealed cooperation of disk seat, the valve body upper end is equipped with the well platform, and the valve rod is worn to be equipped with in the rotation of well bench, and the valve rod lower extreme links to each other with the spheroid transmission, and the valve rod upper end is connected with handle, its characterized in that: a positioning disc is fixedly sleeved on the periphery of the middle table, a speed reducing sleeve is rotatably sleeved on the periphery of the positioning disc, a corner limiting structure and a resetting structure are arranged between the speed reducing sleeve and the positioning disc, a fixed sleeve in speed reducing fit is sleeved on the periphery of the speed reducing sleeve, and the fixed sleeve is fixedly connected with the positioning disc; the interval is arranged between the upper part of the speed reducing sleeve and the upper part of the positioning disc, a driving ring is rotationally arranged in the interval, the upper end of the driving ring is connected with the driving disc, the driving disc is in transmission connection with the valve rod, a notch is arranged on the driving ring, a roller is matched in the notch, a first corrugated groove is arranged on the outer peripheral surface of the positioning disc corresponding to the interval, a second corrugated groove is arranged on the inner peripheral surface of the speed reducing sleeve corresponding to the interval, the roller is matched with the first corrugated groove and the second corrugated groove, the distance between the top of the first corrugated groove and the top of the second corrugated groove is smaller than the width of the cross section of the roller, and the distance between the bottom of the first corrugated groove and the top of the second corrugated groove and the distance between the top of the first corrugated.

The lower end of the positioning plate is provided with a step, and the lower end of the corresponding speed reducing sleeve is arranged on the step.

The corner limiting structure comprises an arc limiting groove arranged on the lower end face of the speed reducing sleeve and a limiting rod arranged on the upper end face of the step of the positioning disc, and the limiting rod is arranged in the limiting groove.

The reset structure is a reset spring, an arc-shaped spring groove is formed between the lower end face of the corresponding speed reducing sleeve and the upper end face of the step of the positioning disc, the reset spring is arranged in the arc-shaped spring groove, and the two ends of the reset spring simultaneously support against the positioning disc and the speed reducing sleeve in the initial state of the speed reducing sleeve.

The improved water hammer-proof ball valve has the advantages that the valve is provided with the speed reducing structure, the valve is prevented from being opened or closed at an excessive speed, water hammer is prevented from being generated, and the sealing performance and the service life of the valve cannot be influenced.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a cross-sectional view D-D of fig. 1 of the present invention.

Figure 3 is a cross-sectional view taken along line E-E of the initial state of the speed reducing sleeve of figure 1 in accordance with the present invention.

Fig. 4 is a cross-sectional view taken along line E-E of the reduction sleeve of fig. 1 in a state in which rapid rotation of the reduction sleeve is blocked according to the present invention.

FIG. 5 is an enlarged view of the portion C of FIG. 2 according to the present invention.

Detailed Description

The drawings show the structure of the invention, and the details thereof are further described below with reference to the drawings. In the embodiment, referring to fig. 1-5, the waterproof hammer ball valve includes a valve body 1, a ball 3 is arranged in the valve body 1, the ball 3 is in sealing fit with a valve seat 2, a middle table 15 is arranged at the upper end of the valve body 1, a valve rod 4 is rotatably arranged on the middle table 15 in a penetrating manner, the lower end of the valve rod 4 is in transmission connection with the ball 3, a handle 11 is connected to the upper end of the valve rod 4, a positioning disc 5 is fixedly sleeved on the periphery of the middle table 15, a speed reducing sleeve 7 is rotatably sleeved on the periphery of the positioning disc 5, a corner limiting structure and a resetting structure 13 are arranged between the speed reducing sleeve 7 and the positioning disc 5, a fixed sleeve 8 in speed reducing fit is sleeved on the periphery of the; a space is arranged between the speed reducing sleeve 7 and the upper part of the positioning disc 5, a driving ring 12 is rotationally arranged in the space, the upper end of the driving ring 12 is connected with a driving disc 10, the driving disc 10 is sleeved on the valve rod 4, the driving disc 10 is in transmission connection with the valve rod 4, a notch 14 is arranged on the driving ring 12, a roller 9 is arranged in the notch 14 in a matching manner, a first corrugated groove 17 is arranged on the outer peripheral surface of the positioning disc 5 corresponding to the space, a second corrugated groove 18 is arranged on the inner peripheral surface of the speed reducing sleeve 7 corresponding to the space, the roller 9 is matched with the first corrugated groove 17 and the second corrugated groove 18, the distance between the top 21 of the first corrugated groove 17 and the top 20 of the second corrugated groove 18 is smaller than the cross-section width of the roller 9, the distance between the bottom 22 of the first corrugated groove 17 and the top 20 of the second corrugated groove 18 and the distance between the top 21 of the first corrugated groove 17 and the bottom 19, namely, the roller 9 can not pass between the top 21 of the first corrugation groove 17 and the top 20 of the second corrugation groove 18, and the roller 9 can pass between the top 21 of the first corrugation groove 17 and the bottom 19 of the second corrugation groove 18, so that the roller 9 can drive the second corrugation groove 18 to drive the speed reducing sleeve 7 to rotate, and the roller 9 can pass between the bottom 22 of the first corrugation groove 17 and the top 20 of the second corrugation groove 18, so that the speed reducing sleeve 7 can be rotated and reset under the action of the resetting structure 13.

As a further improved embodiment, with reference to fig. 1, the lower end of the positioning plate 5 is provided with a step 23, and the lower end of the corresponding speed reducing sleeve 7 is placed on the step 23.

As a further improved embodiment, referring to fig. 3-4, the corner limiting structure is an arc-shaped limiting groove 16 disposed on the lower end surface of the reduction sleeve 7 and a limiting rod 6 disposed on the upper end surface of the step of the positioning disk 5, and the limiting rod 6 is disposed in the limiting groove 16.

As a further improved specific embodiment, referring to fig. 3-4, the reset structure 13 is a reset spring, an arc-shaped spring groove 24 is provided between the lower end surface of the corresponding speed reducing sleeve 7 and the upper end surface of the step 23 of the positioning plate 5, the reset spring is disposed in the arc-shaped spring groove 24, and in the initial state of the speed reducing sleeve 7, both ends of the reset spring simultaneously support against the positioning plate 5 and the speed reducing sleeve 7. In order to improve the stability of the reset, more than two sets of reset structures 12 may be provided.

The opening or closing process of the invention: when the rotary handle 11 drives the valve rod 4 and the ball 3 to rotate to open or close, the driving disk 10 and the driving ring 12 are simultaneously driven to rotate in the same direction as the valve rod 4, because the roller 9 is arranged at the notch 14 of the driving ring 12, the roller 9 is also simultaneously driven to rotate in the same direction, when the driving ring 12 drives the roller 9 to rotate, because the positioning disk 5 does not rotate, the roller 9 drives the reduction sleeve 7 to rotate in the same direction, when the reduction sleeve 7 and the second corrugated groove 18 thereof rotate, and the roller 9 enters between the notch of the next first corrugated groove 17 and the notch of the second corrugated groove 18, the reduction sleeve 7 rotates to the initial state under the action of the reset spring, in the process, if the rotation speed of the handle 11 is too fast, the roller 9 can directly drive the reduction sleeve 7 to rotate in the same direction continuously (because friction force can be generated between the arc-shaped surfaces of the roller 9 and the second corrugated groove 18, when the rotation is too fast, the roller 9 has already been turned to the next position corresponding to the notch of the first corrugation groove 17, without having suddenly come out of the notch of the second corrugation groove 18), and when turned through a certain angle, because the speed reducing sleeve 7 stops rotating under the action of the arc-shaped limiting groove 16 and the limiting rod 6, the roller 9 is tightly pressed on the second corrugated groove 18, and at the moment, the top of the first flute 17 and the top of the second flute 18 are at the same angular position, the roller 9 can not rotate to the next position, the handle 11, the valve rod 4 and the ball 3 can not rotate in the same direction, at this time, it is necessary to rotate the handle 11 slightly in the opposite direction, to release the action of the roller 9 on the second corrugation groove 18, to restore the reduction sleeve 7 to the initial state under the action of the return spring, the valve can then be operated to slowly open or close, thereby controlling the opening or closing speed of the valve to prevent water hammer.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.