An adaptive dust removal flap valve

Abstract

The present invention provides an adaptive dust removal plug-in valve, comprising: a plug-in plate, a loading plate and a top cover plate; a triple dust removal structure arranged in sequence is provided between the plug-in plate and the loading plate; guide rails are provided on the upper and lower sides of the loading plate, and the upper and lower gaps of the guide rails are greater than the thickness of the loading plate; a spring device pre-tightened at a certain angle is provided between the loading plate and the top cover plate; the plug-in plate is connected to the valve stem, and a handwheel is provided at the end of the valve stem to drive the plug-in plate to move in translation; when the plug-in plate moves to the closed position, the loading plate contacts the upper guide rail, the spring device is in a released state, and the triple dust removal structure does not deform; when the plug-in plate moves in translation from the closed position, the triple dust removal structure drives the loading plate to move in the same direction, the spring device is compressed, and the elastic reset force generated drives the loading plate to contact the lower guide rail, and the triple dust removal structure deforms under pressure and is in close contact with the plug-in plate. The above-mentioned adaptive dust removal plug-in valve solves the problem of the plug-in plate getting stuck during the switching process while retaining the original dust prevention effect.

Description

Technical Field

[0001] The invention relates to the field of gate valves, in particular to the design of dust collecting gate valves for desulfurization pipelines. Background Art

[0002] The gate valve is a commonly used valve. The valve stem drives the valve plate to open and close. The valve plate is sealed with the valve cavity through a sealing device. During the movement of the valve plate, there is friction between the valve plate and the sealing device. After long-term use, the sealing device is easily damaged, resulting in poor sealing reliability. It is easy to cause dust in the valve cavity to leak out of the valve body, affecting the on-site environment.

[0003] In addition, when the gate valve is closed, the valve plate is located in the valve cavity and dust will be deposited on the valve plate; when the gate valve is opened, the dust on the valve plate is more likely to move to the outside of the valve cavity along with the valve plate, affecting the on-site environment.

[0004] Based on the above problems, it is required to develop a valve that can prevent the dust in the valve cavity from leaking out of the valve body, while improving the sealing reliability, and also have the ability to achieve free movement in the desulfurization ash without sticking and other problems.

[0005] The sealing method currently used in factories is to add a baffle at the valve plate outlet, fill a sealing strip between the baffle and the outlet, and by tightening the bolts on the baffle, the sealing strip is squeezed and deformed, so as to achieve the purpose of close contact between the sealing strip and the plug plate, thereby realizing the sealing of the plug valve.

[0006] However, this sealing method causes great friction between the sealing strip and the plug plate, which is easy to get stuck during the switching process, and the sealing strip is also severely worn. Severe wear of the sealing strip will cause the plug valve to leak dust, so the sealing strip needs to be replaced frequently. Summary of the invention

[0007] The main technical problem to be solved by the present invention is to provide an adaptive dust removal plug-in valve, which solves the problem of the plug-in plate getting stuck during the switching process while retaining the original dust prevention effect.

[0008] In order to solve the above technical problems, the present invention provides an adaptive dust removal gate valve, comprising: a gate, a material loading plate and a top cover plate; a triple dust removal structure arranged in sequence is provided between the gate and the material loading plate;

[0009] Guide rails are provided on the upper and lower sides of the material carrier plate, and the upper and lower gaps of the guide rails are greater than the thickness of the material carrier plate; a spring device preloaded at a certain angle is provided between the material carrier plate and the top cover plate; the plug plate is connected to the valve stem, and a hand wheel is provided at the end of the valve stem to drive the plug plate to move horizontally;

[0010] When the plug plate moves to the closed position, the loading plate contacts the upper guide rail, the spring device is in a released state, and the triple dust removal structure does not deform; when the plug plate moves translationally from the closed position, the triple dust removal structure drives the loading plate to translate in the same direction, the spring device is compressed, and the elastic restoring force generated drives the loading plate to contact the lower guide rail, and the triple dust removal structure deforms under pressure and is in close contact with the plug plate.

[0011] In a preferred embodiment: the spring device includes two springs and four spring seats, and the spring seats are hinged to the springs.

[0012] In a preferred embodiment, the upper and lower gaps of the guide rails are greater than the thickness of the carrier plate by 0.5 mm.

[0013] In a preferred embodiment: the triple dust removal structure comprises from top to bottom: a dust removal scraper, a dust removal rubber, and a dust removal felt strip.

[0014] The present invention has the following beneficial effects:

[0015] A three-layer dust removal device is added to the valve port of the gate valve. When the gate is withdrawn from the valve body, dust is removed layer by layer, and most of the removed dust is collected in the dust box. An automatic adjustment device is installed on the dust removal plate to adjust the tightness of the dust removal device to achieve the best dust removal effect and effectively prevent the wear of the dust removal material, which greatly improves the problem of easy wear and easy jamming of the old gate valve after use. A sealing rubber gasket is placed near the outlet of the dust removal device to enhance the sealing of the valve, and at the same time, a small amount of residual dust can be blocked inside the valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the structure of the adaptive triple dust removal gate valve implemented in the present invention; DETAILED DESCRIPTION

[0018] In order to better understand the technical solution of the present invention, the embodiments provided by the present invention are described in detail below with reference to the accompanying drawings.

[0019] Reference Figure 1 As shown, an adaptive dust removal gate valve comprises: a gate 1, a material carrying plate 3 and a top cover plate 5; a triple dust removal structure 2 arranged in sequence is provided between the gate 1 and the material carrying plate 3;

[0020] Guide rails 6 are provided on the upper and lower sides of the material loading plate 3, and the upper and lower gaps of the guide rails 6 are greater than the thickness of the material loading plate 3 by 0.5 mm, so that the material loading plate 3 has a certain amount of space for movement in the upper and lower directions; a spring device 4 preloaded at a certain angle is provided between the material loading plate 3 and the top cover plate 5; the plug plate 1 is connected to the valve stem, and a hand wheel is provided at the end of the valve stem to drive the plug plate to move in translation;

[0021] When the plug plate 1 moves to the closed position, the loading plate 3 contacts the upper guide rail 6, the spring device 4 is in a released state, and the triple dust removal structure 2 is not deformed; when the plug plate 1 moves translationally from the closed position, the triple dust removal structure 2 drives the loading plate 3 to translate in the same direction, the spring device 4 is compressed, and the elastic restoring force generated drives the loading plate 3 to contact the lower guide rail 6, and the triple dust removal structure 2 is deformed under pressure and is in close contact with the plug plate 1.

[0022] Therefore, when the plug plate 1 withdraws from the valve body, the triple dust removal structure 2 removes dust layer by layer and stores most of the removed dust in the dust box. By squeezing the triple dust removal structure 2 by the carrier plate 3, the tightness of the triple dust removal structure 2 can be adjusted to achieve the best dust removal effect and effectively prevent the wear of the triple dust removal structure 2, which greatly improves the problem that the old plug plate valve is easy to wear and easy to get stuck after use. Sealing rubber gaskets are placed near the outlet of the dust removal device to enhance the sealing of the valve, and at the same time, a small amount of residual dust can be blocked inside the valve body. And after the plug plate 1 returns to the closed position, the carrier plate 3 automatically releases the squeezing of the triple dust removal structure 2, so that the friction between the triple dust removal structure 2 and the plug plate 1 is reduced, so that the plug plate 1 can move smoothly.

[0023] In this embodiment, the spring device 4 includes two springs and four spring seats, and the spring seats are hinged to the springs.

[0024] The triple dust removal structure 2 comprises from top to bottom: a dust removal scraper, a dust removal rubber, and a dust removal felt strip.

[0025] The above-mentioned adaptive dust removal plug valve uses the component force generated by the spring deformation to achieve the effect that the plug plate 1 is pulled out of the triple dust removal structure 2 to press the dust removal, and the plug plate 1 is inserted into the triple dust removal structure 2 to float. The dust removal includes the following steps:

[0026] Step 1: Turn the hand wheel to pull the insert plate 1 outwards;

[0027] Step 2: After the insert plate 1 is pulled outward, the triple dust removal structure 2 is subjected to an outward friction force, and the carrier plate 3 connected to the triple dust removal structure 2 slides outward at the same time;

[0028] Step three, the loading plate 3 slides outward to drive the spring to compress. As the vertical component force becomes larger, the loading plate 3 presses the triple dust removal structure 2 downward in the gap of the guide rail 6, achieving the effect of automatically adjusting the pressing force.

[0029] The above description is only a preferred embodiment of the present invention, and therefore cannot be used to limit the scope of implementation of the present invention. That is, equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the specification should still fall within the scope covered by the patent of the present invention.

Claims

1. An adaptive dust removal gate valve, characterized in that include: An insert plate, a material loading plate and a top cover plate; a triple dust removal structure arranged in sequence is provided between the insert plate and the material loading plate; Guide rails are provided on the upper and lower sides of the material carrier plate, and the upper and lower gaps of the guide rails are greater than the thickness of the material carrier plate; a spring device preloaded at a certain angle is provided between the material carrier plate and the top cover plate; the plug plate is connected to the valve stem, and a hand wheel is provided at the end of the valve stem to drive the plug plate to move horizontally; When the plug plate moves to the closed position, the material carrier plate contacts the upper guide rail, the spring device is in a released state, and the triple dust removal structure does not deform; when the plug plate moves from the closed position, the triple dust removal structure drives the material carrier plate to translate in the same direction, the spring device is compressed, and the elastic restoring force generated drives the material carrier plate to contact the lower guide rail, and the triple dust removal structure deforms under pressure and is in close contact with the plug plate; The spring device comprises two springs and four spring seats, wherein the spring seats are hinged to the springs; the spring seats are respectively fixed on the opposite sides of the top cover plate and the material loading plate, and the springs are hinged between the spring seats of the top cover plate and the material loading plate.

2. The adaptive dust removal gate valve according to claim 1, characterized in that: The upper and lower gaps of the guide rails are greater than the thickness of the loading plate by 0.5 mm.

3. The adaptive dust removal gate valve according to claim 2, characterized in that: The triple dust removal structure comprises from top to bottom: a dust removal scraper, a dust removal rubber, and a dust removal felt strip.

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