Slicing valve group with novel structure

Abstract

The invention belongs to the technical field of fluid equipment, and discloses a novel structure slice valve group, which comprises a slice valve and a valve core, the slice valve is connected with the valve core, the slice valve is provided with a valve plate and a valve block, a motion guide rail is arranged between the valve plate and the valve block, and the valve block is limited on the inner side of the motion guide rail. The valve plate and the valve plate do reciprocating rectilinear motion relatively through the motion guide rail; at least three long-strip-shaped through holes are formed in the valve plate, the long-strip-shaped through holes in the uppermost end and the lowermost end of the valve plate are of kidney-shaped hole structures, and the outer side edges of the long-strip-shaped through holes in the uppermost end and the lowermost end are arc lines; a groove hole cavity is formed in the valve plate, the inner face and the outer face of the groove hole cavity of the valve plate are of a quasi-rectangular structure, the long edges of the inner face and the outer face of the groove hole cavity of the valve plate are of an arc line structure, a clamping groove is further formed in the valve plate, and the valve plate is fixedly connected with the valve element through the formed clamping groove. The problem that when a shaft deflection angle is formed between the valve plate and the valve plate in the movement direction of the valve plate of the linear configuration slice valve, air path connection and disconnection are not accurate is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of fluid equipment, and more specifically, relates to a new type of structural slicing valve group. Background Art

[0002] The slicing valve is widely integrated into the key control systems of pneumatic diaphragm pumps and pneumatic plunger pumps due to its excellent flow regulation and cutting capabilities. As the core auxiliary component for pneumatic motors to achieve efficient and precise power transmission, the slicing valve finely adjusts the flow of compressed air, which not only ensures the stable operation of the pneumatic motor, but also improves the overall performance and response speed of the pump, allowing pneumatic diaphragm pumps and pneumatic plunger pumps to achieve more accurate and efficient fluid delivery and control in a variety of industrial applications.

[0003] The existing slicing valve structure generally adopts a linear configuration, such as Figure 1 As shown, the valve plate of the linear configuration slicing valve is provided with three long strip through holes, and the long sides of the long strip through holes are linear; Figure 2 As shown in the figure, the valve plate of the linear configuration slicing valve is provided with a groove cavity with a rectangular configuration inside and outside, and the edges of the groove cavity are all linear configurations; when the linear configuration slicing valve is working, when the valve plate reciprocates along the bidirectional arrow on the motion guide rail to the middle position of the valve plate, its theoretical ideal position is as follows Figure 3 As shown in the figure, there is no axial deviation between the valve disc and the valve plate in the direction of its movement, and there is no gas bypass in the gas path; however, in actual working conditions, when the valve disc reciprocates on the moving guide rail, the valve disc will form an axial deviation between the valve disc and the valve plate in the direction of its movement, and form an unexpected gas bypass area in the middle position, such as Figure 4 As shown in the figure, the air path is not accurately opened and closed, resulting in weakened or ineffective functions; and the control of the axial deflection angle formed by the movement of the valve plate depends on the limit of the motion guide rail, and the guide rail of the motion guide rail is easily abraded by the side of the valve plate, resulting in a short service life of the motion guide rail or the valve plate, such as Figure 4 As shown, after the valve disc is tilted, the sharp corners scrape the guide rail surface and wear the guide rail surface.

[0004] To this end, the present invention provides a new type of structural slicing valve group. Summary of the invention

[0005] In view of the above-mentioned problems existing in the prior art, the object of the present invention is to provide a new type of structural slicing valve group, which solves the problem that when the valve sheet of the prior art linear configuration slicing valve forms an axial deviation angle with the valve plate in its movement direction, an unexpected air cross-talk area is formed in the middle position, the air path is not accurately opened and closed, and the function is weakened or failed.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] A novel structure slicing valve group, comprising a slicing valve and a valve core, wherein the slicing valve is connected to the valve core, the slicing valve is provided with a valve plate and a valve sheet, a motion guide rail is provided between the valve plate and the valve sheet, the valve sheet is limited on the inner side of the motion guide rail, and the valve sheet reciprocates linearly relative to the valve plate through the motion guide rail;

[0008] At least three long strip through holes are formed on the valve plate, the long strip through holes at the uppermost and lowermost ends of the valve plate are waist-shaped hole structures, and the outer edges of the long strip through holes at the uppermost and lowermost ends are arc lines;

[0009] The valve plate is provided with a slot cavity, the inner and outer surfaces of the slot cavity of the valve plate are both rectangular in configuration, the inner and outer long edges of the slot cavity of the valve plate are both arc-shaped, and the valve plate is also provided with a retaining groove, and the valve plate is fixedly connected to the valve core through the retaining groove.

[0010] As a further preferred technical solution of the present invention, three long strip through holes are provided on the valve plate.

[0011] As a further preferred technical solution of the present invention, the inner edges of the elongated through holes at the uppermost and lowermost ends of the valve plate are straight lines, the elongated through holes in the middle end of the valve plate are rounded rectangles, the edges of the elongated through holes in the middle end of the valve plate are all straight lines, the outer contour of the cross-section of the valve plate is a rounded rectangle, and the outer edges of the valve plate are all straight lines.

[0012] As a further preferred technical solution of the present invention, the short edges of the inner and outer surfaces of the slot cavity of the valve plate are both straight lines, the connecting edges between the inner and outer surfaces of the slot cavity of the valve plate are a combination of straight lines and circular arcs, the outer contour of the cross-section of the valve plate is a rounded rectangle, and the outer edge of the valve plate is a straight line.

[0013] As a further preferred technical solution of the present invention, the outer contour width W1 of the valve plate is equal to the farthest edge distance L2 of the elongated through holes at the uppermost and lowermost ends of the valve plate, and the width W3 of the slot cavity of the valve plate is equal to the nearest edge distance L4 of the elongated through holes at the uppermost and lowermost ends of the valve plate.

[0014] As a further preferred technical solution of the present invention, the outer profile length L1 of the valve plate is greater than the width W4 of any long strip through hole of the valve plate, and the outer profile length L1 of the valve plate is less than the outer profile width W2 of the valve plate;

[0015] The length L3 of the slot cavity of the valve plate is equal to the width W4 of any long strip through hole of the valve plate.

[0016] As a further preferred technical solution of the present invention, two groups of the retaining grooves are provided, and the two groups of the retaining grooves are respectively arranged on the upper end and the lower end of the back side of the valve plate, and the valve plate is fixedly connected to the valve core through the two groups of the retaining grooves.

[0017] As described above, the novel structure slicing valve group provided by the present invention has the following beneficial effects:

[0018] 1. The present invention utilizes the above-mentioned novel structural slicing valve group, and adopts such a structure: the design of the valve plate and valve sheet of the slicing valve cleverly uses a combination of straight surface and arc surface, the outer edges of the long strip through holes at the uppermost and lowermost ends of the valve plate of the slicing valve are arc lines, and the inner surface and outer long edges of the slot hole cavity of the valve sheet of the slicing valve are both arc line configurations, which effectively reduces the influence of the axial deviation angle of the valve sheet movement on the accuracy of the valve group. Compared with the existing slicing valve group with a pure linear configuration, the slicing valve of the present invention has better on-off accuracy and is more reliable under the axial deviation angle within a certain range of valve sheet movement.

[0019] 2. The present invention utilizes the above-mentioned new type of structural slicing valve group, and compared with the existing purely linear configuration slicing valve group, adopts the following structure: a group of retaining grooves are respectively provided at the upper and lower ends of the back side of the valve plate of the slicing valve, and the valve plate is fixedly connected to the valve core through the two groups of the retaining grooves. The retaining grooves on the valve plate enable the valve plate to be better positioned on the valve core, limit and reduce the occurrence of axial deviation of the valve plate relative to the valve plate, indirectly protect the moving guide rail from severe wear, and increase the life of the moving guide rail.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0022] Figure 1 It is a structural schematic diagram of a valve plate of a linear configuration slicing valve in the prior art;

[0023] Figure 2 It is a structural schematic diagram of a valve slice of a linear configuration slice valve in the prior art;

[0024] Figure 3 It is a theoretical ideal working condition diagram of the valve plate and valve plate of the linear configuration slice valve in the prior art;

[0025] Figure 4 It is a diagram of the actual working condition of the cooperation between the valve plate and the valve sheet of the linear configuration slice valve in the prior art;

[0026] Figure 5 This is a schematic diagram of the structure of a new type of structural slicing valve group applied for by the present invention;

[0027] Figure 6 A front view of a valve plate of a novel structure slice valve group applied for by the present invention;

[0028] Figure 7 A schematic diagram of the structure of a valve slice of a new type of structural slice valve group applied for by the present invention;

[0029] Figure 8 A front view of a valve slice of a new type of structural slice valve group applied for by the present invention;

[0030] Fig. 9 A theoretical ideal working condition diagram of the valve plate and valve sheet of a new type of structure slice valve group applied for by the present invention;

[0031] Fig.10 This is a diagram of actual working conditions of the valve plate and valve sheet of a new type of structural slice valve group applied for by the present invention.

[0032] Summary of reference numerals and their descriptions:

[0033] 100, slice valve; 110, valve plate; 111, long strip through hole; 120, valve plate; 121, slot cavity; 122, positioning groove; 200, valve core; 300, motion guide rail; 400, air flow area. DETAILED DESCRIPTION

[0034] The following is a description of the implementation of the present invention by means of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0035] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions that the present invention can be implemented, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects that the present invention can produce and the purposes that can be achieved. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of the relative relationship should also be regarded as the scope of the implementation of the present invention without substantial changes in the technical content. The specific structure can be described with reference to the drawings of the patent application.

[0036] The present invention provides a new type of structure slicing valve group, please refer to Figures 5 to 10 As shown, it includes a slicing valve 100 and a valve core 200, the slicing valve 100 is connected to the valve core 200, the slicing valve 100 is provided with a valve plate 110 and a valve plate 120, a motion guide rail 300 is provided between the valve plate 110 and the valve plate 120, the valve plate 120 is limited on the inner side of the motion guide rail 300, and the valve plate 120 reciprocates linearly relative to the valve plate 110 through the motion guide rail 300;

[0037] At least three long strip through holes 111 are formed on the valve plate 110. In the present embodiment, three long strip through holes 111 are formed on the valve plate 110. The long strip through holes 111 at the uppermost and lowermost ends of the valve plate 110 are waist-shaped hole structures, and the outer edges of the long strip through holes 111 at the uppermost and lowermost ends are arc lines.

[0038] The valve plate 120 is provided with a slot cavity 121, the inner and outer surfaces of the slot cavity 121 of the valve plate 120 are both rectangular in configuration, the inner and outer long edges of the slot cavity 121 of the valve plate 120 are both arc-shaped, and the valve plate 120 is also provided with a retaining groove 122, and the valve plate 120 is fixedly connected to the valve core 200 via the retaining groove 122.

[0039] It should be noted that the design of the valve plate 110 and the valve sheet 120 of the slicing valve 100 cleverly uses a combination of straight surfaces and arc surfaces. The outer edges of the elongated through holes 111 at the upper and lower ends of the valve plate 110 of the slicing valve 100 are arc lines, and the inner and outer long edges of the slot cavity 121 of the valve sheet 120 of the slicing valve 100 are both arc line configurations, which effectively reduces the influence of the axial deviation angle of the valve sheet 120 on the accuracy of the valve group. Compared with the existing slicing valve group with a pure linear configuration, the slicing valve 100 of the present invention has better and more reliable switching accuracy under the axial deviation angle within a certain range of movement of the valve sheet 120.

[0040] Specifically, the specific structure of the valve plate 110 is shown below. Figure 5 and Figure 6 As shown, the inner edges of the elongated through holes 111 at the uppermost and lowermost ends of the valve plate 110 are straight lines, the elongated through holes 111 at the middle end of the valve plate 110 are rounded rectangles, the edges of the elongated through holes 111 at the middle end of the valve plate 110 are all straight lines, the outer contour of the cross-section of the valve plate 110 is a rounded rectangle, and the outer edges of the valve plate 110 are all straight lines.

[0041] Specifically, the specific structure of the valve plate 110 is shown below. Figure 5 , Figure 7 as well as Figure 8 As shown, the short edges of the inner and outer surfaces of the slot cavity 121 of the valve plate 120 are both straight lines, the connecting edges between the inner and outer surfaces of the slot cavity 121 of the valve plate 120 are a combination of straight lines and circular arcs, the cross-sectional outline of the valve plate 120 is a rounded rectangle, and the outer edge of the valve plate 120 is a straight line.

[0042] The outer profile width W1 of the valve plate 120 is equal to the distance L2 between the farthest edges of the elongated through holes 111 at the upper and lower ends of the valve plate 110, and the width W3 of the slot cavity 121 of the valve plate 120 is equal to the distance L4 between the closest edges of the elongated through holes 111 at the upper and lower ends of the valve plate 110;

[0043] The outer length L1 of the valve plate 120 is greater than the width W4 of any long strip through hole 111 of the valve plate 110, and the outer length L1 of the valve plate 120 is less than the outer width W2 of the valve plate 110; the length L3 of the slot cavity 121 of the valve plate 120 is equal to the width W4 of any long strip through hole 111 of the valve plate 110.

[0044] Combination Figure 5As shown, the retaining grooves 122 are provided with two groups, and the two groups of retaining grooves 122 are respectively arranged on the upper end and the lower end of the back side of the valve plate 120. The valve plate 120 is fixedly connected to the valve core 200 through the two groups of retaining grooves 122. The retaining grooves 122 on the valve plate 120 enable the valve plate 120 to be better positioned on the valve core 200, limit and reduce the occurrence of axial deviation of the valve plate 120 relative to the valve plate 110, indirectly protect the moving guide rail 300 from being severely worn, and increase the life of the moving guide rail 300.

[0045] The working principle of a novel structure slicing valve group of the present invention is as follows:

[0046] When the new structure slicing valve group of the present invention is working, when the valve plate 120 reciprocates up and down along the motion guide rail 300 to the middle position of the valve plate 110, its theoretical ideal position is as follows: Fig. 9 As shown, there is no axial deviation angle between the valve plate 120 and the valve plate 110 in the direction of movement, and there is no gas bypass in the gas path;

[0047] However, in the slicing valve group with a new structure of the present invention, under actual working conditions, it will be the same as the slicing valve group with a pure linear configuration in the prior art. When the valve plate 120 moves back and forth up and down along the motion guide rail 300, the valve plate 120 will also form an axial deviation angle with the valve plate 110 in its movement direction. However, since the slicing valve group with a new structure of the present invention adopts such a new structural design: the outer edges of the elongated through holes 111 at the upper and lower ends of the valve plate 110 of the slicing valve 100 are arc lines, and the inner surface and outer long edges of the slot cavity 121 of the valve plate 120 of the slicing valve 100 are both arc line configurations, the combination of straight line surfaces and arc surfaces is cleverly designed at the close fit between the valve plate 110 and the valve plate 120 of the slicing valve 100, so that when the valve plate 120 moves to the middle position of the valve plate 110, its actual working position is as follows: Fig.10 As shown in the figure, it is still in the theoretical ideal position, keeping the gas path without any gas bypass, the function will not be weakened or failed, and a suitable positioning groove 122 is designed on the back of the valve plate 120 to better position the valve plate 120 on the valve core 200, limit and reduce the occurrence of the axial deviation angle of the valve plate 120 relative to the valve plate 110, so that the valve plate 120 and the valve plate 110 are limited within the designed angle range, avoiding the occurrence of Figure 4 As shown, an unexpected cross-flow area 400 is formed in the middle position, and the air path is not accurately opened and closed, resulting in weakened functions or failures.

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A new type of structural slicing valve group, characterized in that: The slicing valve comprises a slicing valve and a valve core, wherein the slicing valve is connected to the valve core, the slicing valve is provided with a valve plate and a valve sheet, a motion guide rail is provided between the valve plate and the valve sheet, the valve sheet is limited on the inner side of the motion guide rail, and the valve sheet reciprocates linearly relative to the valve plate through the motion guide rail; At least three long strip through holes are formed on the valve plate, the long strip through holes at the uppermost and lowermost ends of the valve plate are waist-shaped hole structures, and the outer edges of the long strip through holes at the uppermost and lowermost ends are arc lines; The valve plate is provided with a slot cavity, the inner and outer surfaces of the slot cavity of the valve plate are both rectangular in configuration, the inner and outer long edges of the slot cavity of the valve plate are both arc-shaped, and the valve plate is also provided with a retaining groove, and the valve plate is fixedly connected to the valve core through the retaining groove.

2. According to the novel structure slicing valve group according to claim 1, it is characterized in that: The valve plate is provided with three long strip through holes.

3. A new type of structural slicing valve group according to claim 1 or 2, characterized in that: The inner edges of the elongated through holes at the uppermost and lowermost ends of the valve plate are straight lines, the elongated through holes at the middle end of the valve plate are rounded rectangles, the edges of the elongated through holes at the middle end of the valve plate are all straight lines, the outer contour of the cross-section of the valve plate is a rounded rectangle, and the outer edges of the valve plate are all straight lines.

4. A new type of structural slicing valve group according to claim 1 or 2, characterized in that: The short edges of the inner and outer surfaces of the slot cavity of the valve plate are both straight lines, the connecting edges between the inner and outer surfaces of the slot cavity of the valve plate are a combination of straight lines and circular arcs, the cross-sectional profile of the valve plate is a rounded rectangle, and the outer edge of the valve plate is straight line.

5. A new type of structural slicing valve group according to claim 1 or 2, characterized in that: The outer contour width W1 of the valve plate is equal to the farthest edge distance L2 of the long strip through holes at the upper and lower ends of the valve plate, and the width W3 of the slot cavity of the valve plate is equal to the closest edge distance L4 of the long strip through holes at the upper and lower ends of the valve plate.

6. A new type of structural slicing valve group according to claim 1 or 2, characterized in that: The outer profile length L1 of the valve plate is greater than the width W4 of any long strip through hole of the valve plate, and the outer profile length L1 of the valve plate is less than the outer profile width W2 of the valve plate; The length L3 of the slot cavity of the valve plate is equal to the width W4 of any long strip through hole of the valve plate.

7. A new type of structural slicing valve group according to claim 1 or 2, characterized in that: The retaining grooves are provided in two groups, and the two groups of retaining grooves are respectively provided at the upper end and the lower end of the back side of the valve plate, and the valve plate is fixedly connected to the valve core through the two groups of retaining grooves.

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