Pneumatic pressure plate valve

Abstract

The utility model discloses a pneumatic pressing plate valve, which comprises a valve body, a sealing gasket, a valve cover and an air cylinder, and is characterized in that a guide component is arranged between the valve body and the valve cover and comprises two guide plates respectively fixed on two sides of the valve body, and first guide shafts arranged on the valve cover and positioned in guide grooves in the guide plates; the guide groove comprises a first pressing part and a second pressing part which are arranged in sequence and are matched with the first guide shaft to keep the free end of the valve cover in a sealing pad pressing state; the first driving part is matched with the first guide shaft to drive the free end of the valve cover to move obliquely downwards or obliquely upwards so as to press or leave the sealing gasket; and the translation guide part is matched with the first guide shaft to guide the free end of the valve cover to move horizontally. By designing the structure of the guide groove, the sealing butt joint of the butt joint mechanism and the feeding port is not affected when the valve cover is opened, the sealing pad is pressed to achieve sealing when the valve cover is closed, the sealing performance is effectively guaranteed, the sealing pad is prevented from being abraded, and the service life is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of batching equipment, and particularly relates to a pneumatic press plate valve. BACKGROUND

[0002] The material bin with the requirement of sealing and the hard blocky material stored therein is usually provided with a valve at the material inlet. The butterfly valve has good sealing performance, but the sealing surface is prone to damage under the long-time friction of the hard blocky material, leading to sealing failure. The sealing material of the plug valve is not directly or indirectly contacted with the material, but the sealing performance is difficult to guarantee and the whole valve body occupies a large space. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a pneumatic press plate valve, which is pressed downward from above by the valve cover to press the sealing gasket at the material inlet of the material bin under the action of the cylinder and the slide way, so that the sealing surface is not directly or indirectly contacted with the material, and the whole valve body occupies a small space.

[0004] To solve the above technical problem, the technical scheme adopted by the present application is as follows: a pneumatic press plate valve, comprising a valve body, a sealing gasket arranged at the material inlet of the valve body, a valve cover, and a cylinder for driving the valve cover to move and open or close the material inlet, the key lies in that a guide assembly is arranged between the valve body and the valve cover, the guide assembly comprises two guide plates fixed on both sides of the valve body respectively, a first guide shaft arranged on the valve cover and located in a guide groove in the guide plates, and the guide groove comprises a first pressing part matched with the first guide shaft to keep the free end of the valve cover in a state of pressing the sealing gasket, a first driving part matched with the first guide shaft to make the free end of the valve cover move obliquely downward or obliquely upward to press or leave the sealing gasket, and a translation guide part matched with the first guide shaft to guide the horizontal movement of the free end of the valve cover.

[0005] Further, the guide groove further comprises a second driving part located outside the translation guide part and matched with the first guide shaft to make the free end of the valve cover move obliquely downward or obliquely upward so that the top surface of the valve cover is located below the end surface of the sealing gasket or enters above the end surface of the sealing gasket.

[0006] Further, a second guide shaft is arranged on the valve cover, and the guide groove further comprises a second pressing part located outside the second driving part and matched with the second guide shaft to make the connecting end of the valve cover be in a position of pressing the sealing gasket.

[0007] Further, a bell mouth is arranged at the end of the guide plate and communicated with the second pressing part.

[0008] Further, the first guide shaft and the second guide shaft are provided with rollers.

[0009] Further, the valve cover is provided with a first connecting part formed by downward bending on both sides, and the first guide shaft and the second guide shaft are arranged on the first connecting part.

[0010] Further, the valve cover is provided with a second connecting part formed by downward bending, and the second connecting part is connected with the driving end of the cylinder.

[0011] Further, the cylinder is arranged on both sides of the valve body, a first connecting groove is arranged on the second connecting part and vertically arranged for the driving end of the cylinder to pass through, and a first connecting nut is threadedly connected with the second connecting part in a gap arrangement mode on the driving end of the cylinder.

[0012] Further, a sliding sleeve is arranged on the valve body, a sliding rod is arranged on the second connecting part and matched with the sliding sleeve, a second connecting groove is arranged on the second connecting part and vertically arranged for the connecting end of the sliding rod to pass through, and a second connecting nut is threadedly connected with the second connecting part in a gap arrangement mode on the connecting end of the sliding rod.

[0013] Further, a connecting plate is arranged on the valve body, and the cylinder and the sliding sleeve are flange-connected with the connecting plate.

[0014] The pneumatic pressing plate valve has the advantages that: 1. The guide groove is designed, so that the valve cover does not affect the sealing butt joint of the butt joint mechanism and the feeding port when being opened, and the sealing is realized by pressing the sealing gasket when being closed, the sealing property is effectively ensured, the wear of the sealing gasket is prevented, and the service life is ensured; and 2. The whole device is compact in structure and small in occupied space. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a structural schematic view of the pneumatic pressing plate valve of the utility model when the valve cover seals the feeding port;

[0016] Figure 2 is an installation schematic view of the guide plate and the valve body in the pneumatic pressing plate valve of the utility model;

[0017] Figure 3 is a structural schematic view of the valve cover in the pneumatic pressing plate valve of the utility model;

[0018] Figure 4 is a structural schematic view of the pneumatic pressing plate valve of the utility model when the valve cover opens the feeding port;

[0019] Figure 5 is Figure 4 a bottom view.

[0020] In the drawings, 1, valve body, 1-1, inlet, 2, sealing gasket, 3, valve cover, 3-1, first connecting part, 3-2, second connecting part, 3-3, first connecting groove, 3-4, second connecting groove, 4, cylinder, 5, guide plate, 5-1, first pressing part, 5-2, first driving part, 5-3, horizontal translation guide part, 5-4, second driving part, 5-5, second pressing part, 5-6, horn mouth, 6, first guide shaft, 7, second guide shaft, 8, roller, 9, first connecting nut, 10, second connecting nut, 11, sliding sleeve, 12, sliding rod, 13, connecting plate. DETAILED DESCRIPTION

[0021] Referring to the drawings Figures 1-5 The utility model provides a kind of pneumatic pressing plate valve, including valve body 1, sealing gasket 2 being arranged at the inlet 1-1 of valve body 1, valve cover 3 and drive valve cover 3 movement and open or close inlet 1-1 of cylinder 4.Sealing gasket 2 is preferably of silica gel material.

[0022] Referring to the drawings Figures 2-5 Cylinder 4 is provided with one on the both sides of valve body 1, to drive valve cover 3 to move stably.In valve body 1 and valve cover 3 between being equipped with guide assembly to guide valve cover 3 in moving while also make valve cover 3 press tightly or loose sealing gasket 2.Guide assembly includes two guide plates 5 respectively fixed in the both sides of valve body 1, first guide shaft 6 being arranged on valve cover 3 and being located in the guide groove in guide plate 5.Guide groove contains sequentially arranged with first guide shaft 6 cooperation first pressing part 5-1 of valve cover 3 free end is kept in the state of pressing tightly sealing gasket 2, with first guide shaft 6 cooperation first driving part 5-2 of valve cover 3 free end is obliquely downward or obliquely upward movement and press tightly or leave sealing gasket 2, with first guide shaft 6 cooperation horizontal translation guide part 5-3 of valve cover 3 free end horizontal movement guide, second driving part 5-4 located in the outside of horizontal translation guide part 5-3, with first guide shaft 6 cooperation makes the free end of valve cover 3 obliquely downward or obliquely upward movement and makes the top surface of valve cover 3 be located below sealing gasket 2 end face or enter sealing gasket 2 end face above.In valve cover 3 still being equipped with second guide shaft 7, guide groove also includes second pressing part 5-5 located in the outside of second driving part 5-4, with second guide shaft 7 cooperation drive valve cover 3 connecting end is in the position of pressing tightly sealing gasket 2.In the end of guide plate 5 is equipped with horn mouth 5-6 with second pressing part 5-5 communication.First guide shaft 6 and second guide shaft 7 are close to the free end and connecting end (the position of piston rod of cylinder 4 is connected with) of valve cover 3 respectively, so that both ends of valve cover 3 can press tightly sealing gasket 2 to guarantee sealing effect.Roller 8 is equipped on first guide shaft 6 and second guide shaft 7.

[0023] Referring to the drawings Figures 3-5The two sides of the valve cover 3 are provided with first connecting parts 3-1 which are downwardly bent, and the first guide shaft 6 and the second guide shaft 7 are arranged on the first connecting parts 3-1. The second connecting part 3-2 which is downwardly bent to form a connecting end is arranged on the valve cover 3, and the second connecting part 3-2 is connected with the driving ends of the two cylinders 4. The first connecting groove 3-3 which is vertically arranged and through which the driving end of each cylinder 4 is arranged is arranged on the second connecting part 3-2, and the first connecting nut 9 which is arranged in a gap with the second connecting part 3-2 is screwed on the driving end of the cylinder 4. The sliding sleeve 11 is arranged on the valve body 1, the sliding rod 12 which cooperates with the sliding sleeve 11 is arranged on the second connecting part 3-2, the second connecting groove 3-4 which is vertically arranged and through which the connecting end of the sliding rod 12 is arranged is arranged on the second connecting part 3-2, and the second connecting nut 10 which is arranged in a gap with the second connecting part 3-2 is screwed on the connecting end of the sliding rod 12. The first connecting nut 9 and the second connecting nut 10 are hexagonal slotted nuts, and are limited by the split pins on the driving end of the cylinder 4 or the connecting end of the sliding rod 12. The connecting plate 13 is arranged on the valve body 1, and the cylinder 4 and the sliding sleeve 11 are flange-connected with the connecting plate 13. By arranging the two connecting grooves on the second connecting part 3-2 and arranging the connecting nuts in a gap with the second connecting part 3-2, the requirement of the freedom of the connecting end of the valve cover 3 in the moving and sealing process is met.

[0024] The working process of the pneumatic pressing plate valve in the process of opening the feeding port 1-1 is as follows: in the initial state, the driving end of the cylinder 4 does not protrude, at this time, the first pressing part 5-1 and the second pressing part 5-5 respectively act on the corresponding rollers 8 to make the valve cover 3 press the sealing gasket 2, so that the sealing property of the valve body is ensured. When feeding is needed from the feeding port 1-1, the driving end of the cylinder 4 is protruded and drives the valve cover 3 to move to open the feeding port 1-1 under the control of the electromagnetic valve, and in the moving process of the valve cover 3, the second guide shaft 7 and the matched roller 8 quickly leave the guide groove through the horn port 5-6 and do not press the sealing gasket 2 any more; under the joint action of the guide groove, the first guide shaft 6 and the matched roller 8, the free end of the valve cover 3 moves horizontally and then obliquely upwards, so that the valve cover 3 does not press the sealing gasket 2 any more (at this time, the two ends of the valve cover 3 do not press the sealing gasket 2 any more, so as to facilitate the opening of the feeding port), and then moves horizontally, when the valve cover 3 is about to leave above the sealing gasket 2, moves obliquely downwards under the action of the second driving part 5-4 and is located below the top surface of the sealing gasket 2 and finally is located at the end of the second driving part 5-4 or the second pressing part 5-5, so as to avoid affecting the butt joint of the upper butt joint mechanism and the feeding port 1-1.

[0025] The working process of the pneumatic pressing plate valve in sealing the material inlet 1-1 is as follows: the driving end of the cylinder 4 is retracted and drives the valve cover 3 to move to the initial position. In this process, under the action of the guide groove and the first guide shaft 6, the free end of the valve cover 3 is first moved obliquely upward along the second driving part 5-4, and then is moved horizontally along the translation guide part 5-3. When moving to the end of the translation guide part 5-3 and about to completely cover the valve inlet, the first guide shaft 6 moves obliquely downward along the first driving part 5-2 and finally stops at the first pressing part 5-1, and the second guide shaft 7 stops at the second pressing part 5-5 through the horn opening 5-6, at this time, the valve cover 3 is tightly pressed on the sealing gasket 2.

[0026] It should be noted finally that: the above examples are only used to illustrate the technical solutions of the present application rather than limit it; although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the specific embodiments of the present application can still be modified or some technical features can be replaced by equivalent ones; without departing from the spirit of the technical solutions of the present application, they should be covered in the technical solution range of the present application claimed.

Claims

1. A pneumatic pressure plate valve, comprising a valve body (1), a sealing gasket (2) disposed at an inlet (1-1) of the valve body (1), a valve cover (3), and a cylinder (4) for driving the valve cover (3) to move and open or close the inlet (1-1), characterized in that: A guide assembly is provided between the valve body (1) and the valve cover (3). The guide assembly includes two guide plates (5) fixed on both sides of the valve body (1) and a first guide shaft (6) disposed on the valve cover (3) and located in the guide groove in the guide plate (5). The guide groove includes a first pressing part (5-1) that cooperates with the first guide shaft (6) to keep the free end of the valve cover (3) in a state of pressing the sealing gasket (2), a first driving part (5-2) that cooperates with the first guide shaft (6) to make the free end of the valve cover (3) move obliquely downward or obliquely upward to press or leave the sealing gasket (2), and a translation guide part (5-3) that cooperates with the first guide shaft (6) to guide the horizontal movement of the free end of the valve cover (3).

2. The pneumatic pressure plate valve according to claim 1, characterized in that: The guide groove also includes a second drive part (5-4) located outside the translation guide part (5-3) and cooperating with the first guide shaft (6) to move the free end of the valve cover (3) obliquely downward or obliquely upward so that the top surface of the valve cover (3) is below the end face of the sealing gasket (2) or enters the end face of the sealing gasket (2).

3. The pneumatic pressure plate valve according to claim 2, characterized in that: A second guide shaft (7) is also provided on the valve cover (3). The guide groove also includes a second pressing part (5-5) located outside the second drive part (5-4) and cooperating with the second guide shaft (7) to make the connecting end of the valve cover (3) press the sealing gasket (2).

4. The pneumatic pressure plate valve according to claim 3, characterized in that: The guide plate (5) has a flared opening (5-6) at its end that communicates with the second pressing part (5-5).

5. The pneumatic pressure plate valve according to claim 3, characterized in that: Rollers (8) are provided on both the first guide shaft (6) and the second guide shaft (7).

6. The pneumatic pressure plate valve according to claim 3, characterized in that: The valve cover (3) has a first connecting part (3-1) formed by bending downward on both sides, and the first guide shaft (6) and the second guide shaft (7) are arranged in the first connecting part (3-1).

7. The pneumatic pressure plate valve according to any one of claims 1-6, characterized in that: The valve cover (3) is provided with a second connecting part (3-2) formed by bending downwards, and the second connecting part (3-2) is connected to the drive end of the cylinder (4).

8. The pneumatic pressure plate valve according to claim 7, characterized in that: The cylinder (4) is provided on both sides of the valve body (1). A first connecting groove (3-3) is provided on the second connecting part (3-2) for the driving end of the cylinder (4) to pass through and is arranged vertically. A first connecting nut (9) is threadedly connected to the driving end of the cylinder (4) with a gap between it and the second connecting part (3-2).

9. The pneumatic pressure plate valve according to claim 8, characterized in that: A sliding sleeve (11) is provided on the valve body (1), and a sliding rod (12) that cooperates with the sliding sleeve (11) is provided on the second connecting part (3-2). A second connecting groove (3-4) that is vertically arranged and allows the connecting end of the sliding rod (12) to pass through is provided on the second connecting part (3-2). A second connecting nut (10) that is spaced apart from the second connecting part (3-2) is threaded onto the connecting end of the sliding rod (12).

10. The pneumatic pressure plate valve according to claim 9, characterized in that: A connecting plate (13) is provided on the valve body (1), and the cylinder (4) and the sliding sleeve (11) are both connected to the flange of the connecting plate (13).

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