CN201301979Y

CN201301979Y - Improved structure of sand valve

Info

Publication number: CN201301979Y
Application number: CNU2008202033870U
Authority: CN
Inventors: 程文奎; 易德忠
Original assignee: DONGGUAN CITY JICHUAN MACHINERY Co Ltd
Current assignee: DONGGUAN CITY JICHUAN MACHINERY Co Ltd
Priority date: 2008-11-14
Filing date: 2008-11-14
Publication date: 2009-09-02
Anticipated expiration: 2018-11-14

Abstract

The utility model relates to the technical field of a sand valve, in particular to an improved structure of a sand valve. A tubular rubber sleeve is sleeved in a sand inlet of the sand valve, the upper end of the rubber sleeve extends outwards to form a backing plate, the backing plate is disposed in a counter hole at the upper end of the sand inlet, and the thickness of the backing plate is larger than the height of the counter hole. Further, the rubber sleeve which has good abrasion resistance is not easy to be abraded by sands, and the rubber sleeve can be changed, which enables the inner wall of the sand inlet not to be abraded, thereby effectively protecting the sand valve, and prolonging the service life of the sand valve. The backing plate has the sealing function, thereby simplifying the structure of the sand valve, realizing simpler structure and lowering the manufacture costs of the sand valve.

Description

A kind of structure improved sand valve

Technical field:

The utility model relates to sand valve technology field, refers in particular to a kind of structure improved sand valve.

Background technique:

Employed sand valve is provided with a sand inlet in the abrasive blast equipment, sand inlet is the passage that is used for sand is imported to the mixing chamber of sand valve, in the using process of sand valve, and constantly the wear and tear inwall of sand inlet of sand, sand is very serious to the wearing and tearing of the inwall of sand inlet, shortens the working life of sand valve.

The model utility content:

The purpose of this utility model is to provide a kind of structure improved sand valve at the deficiencies in the prior art, and it is not worn the inwall of the sand inlet of sand valve, prolongs the working life of sand valve.

For achieving the above object, the utility model is achieved through the following technical solutions:

A kind of structure improved sand valve, the sand valve comprises valve body, be provided with a mixing chamber in the valve body, the upper end of valve body is provided with a sand inlet, sand inlet is communicated with mixing chamber, is arranged with the gum cover of a tubulose in the sand inlet, and a backing plate is extended in the upper end of gum cover direction laterally, backing plate is contained in the counterbore on sand inlet top, and the thickness of backing plate is higher than the height of counterbore.

The tube wall of described sand inlet is provided with at least one sand flow quantity regulating device.

Described sand flow quantity regulating device comprises ball and adjusting screw rod, offers through hole on the tube wall of valve body upper end, and ball is installed in the through hole, the outer wall of the gum cover in the ball roof pressure sand inlet, and adjusting screw rod and through hole are spirally connected.

The rear end of described adjusting screw rod connects a rotating disk.

Described backing plate is a ring.

The beneficial effects of the utility model: the gum cover that is arranged with a tubulose in the sand inlet of the present utility model, a backing plate is extended in the upper end of gum cover direction laterally, backing plate is contained in the counterbore on sand inlet top, the thickness of backing plate is higher than the height of counterbore, and the gum cover wear-resisting property is good, is difficult for being worn and torn by sand, and gum cover can be replaced, the inwall of the sand inlet of sand valve is not worn, effectively protects the sand valve, prolong the working life of sand valve; In addition, backing plate has seal action, and it makes the structure of sand valve obtain simplifying, and structure is simpler, and the manufacture cost of sand valve is also lower.

Description of drawings:

Accompanying drawing 1 is a structural representation of the present utility model;

Accompanying drawing 2 is the plan view of accompanying drawing 1;

Accompanying drawing 3 is the sectional view in BB cross section in the accompanying drawing 2.

Embodiment:

The sand valve is seen accompanying drawing 1 to 3, the sand valve comprises valve body 1, be provided with a mixing chamber 2 in the valve body 1, the upper end of valve body 1 is provided with a sand inlet 3, and sand inlet 3 is communicated with mixing chamber 2, is arranged with the gum cover 4 of a tubulose in the sand inlet 3, a backing plate 5 is extended in the upper end of gum cover 4 direction laterally, described backing plate 5 is a ring, and backing plate 5 is contained in the counterbore on sand inlet 3 tops, and the thickness of backing plate 5 is higher than the height of counterbore.

Gum cover 4 wear-resisting propertys are good, be difficult for being worn and torn by sand, and gum cover 4 can replace, and effectively protect the sand valve, prolong the working life of sand valve.In addition, the backing plate 5 of gum cover 4 upper ends has seal action, being connected by flange between sand inlet 3 and the sand-feeding tube connects, because the thickness of backing plate 5 of the present utility model is higher than the height of counterbore, backing plate 5 is higher than the end face of sand inlet 3, when sand inlet 3 is connected with the abrasive material cylinder, the part that backing plate 5 is higher than the end face of sand inlet 3 is to be clipped between the flange of sand inlet 3 and abrasive material cylinder, backing plate 5 makes the flange between sand inlet 3 and the abrasive material cylinder obtain effective seal, do not need to be provided with special-purpose seal ring or sealing configuration, the structure of sand valve obtains simplifying, and structure is simpler, certainly, the manufacture cost of sand valve is also lower.

The tube wall of described valve body 1 upper end is provided with 6, four sand flow quantity regulating devices 6 of four sand flow quantity regulating devices and is symmetrically distributed on the tube wall.Described sand flow quantity regulating device 6 comprises ball 7 and adjusting screw rod 8, offers through hole 9 on the tube wall of valve body 1 upper end, and ball 7 is installed in the through hole 9, the outer wall of the gum cover 4 in the ball 7 roof pressure sand inlets 3, and adjusting screw rod 8 is spirally connected with through hole 9.Turn adjusting screw rod 8 and promptly can regulate the position of ball 7, thereby regulate the squeezed state of 7 pairs of gum covers 4 of ball, ball 7 extruding gum covers 4 also make gum cover 4 distortion, and gum cover 4 is extruded distortion diminishes flow area, thereby realizes the control to the sand flow amount size of sand inlet 3.

The utility model four direction is provided with sand flow quantity regulating device 6, and sand flow quantity regulating device 6 is symmetrically distributed on the sustained height, sand flow amount by four sand flow quantity regulating devices 6 are regulated sand inlet 3 makes gum cover 4 stressed more even, also increases the amplitude of accommodation of sand flow amount simultaneously.

The rear end of described adjusting screw rod 8 connects a rotating disk 10.Rotary turnplate 10 can be rotated adjusting screw rod 8, brings convenience to the adjusting work of sand flow amount.

The above only is preferred embodiment of the present utility model, so all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.

Claims

1, a kind of structure improved sand valve, the sand valve comprises valve body (1), be provided with a mixing chamber (2) in the valve body (1), the upper end of valve body (1) is provided with a sand inlet (3), sand inlet (3) is communicated with mixing chamber (2), and it is characterized in that: be arranged with the gum cover (4) of a tubulose in the sand inlet (3), a backing plate (5) is extended in the upper end of gum cover (4) direction laterally, backing plate (5) is contained in the counterbore on sand inlet (3) top, and the thickness of backing plate (5) is higher than the height of counterbore.

2, according to the described a kind of structure improved sand valve of claim 1, it is characterized in that: the tube wall of described valve body (1) upper end is provided with at least one sand flow quantity regulating device (6).

3, according to the described a kind of structure improved sand valve of claim 2, it is characterized in that: described sand flow quantity regulating device (6) comprises ball (7) and adjusting screw rod (8), offer through hole (9) on the tube wall of valve body (1) upper end, ball (7) is installed in the through hole (9), the outer wall of the gum cover (4) in ball (7) the roof pressure sand inlet (3), adjusting screw rod (8) is spirally connected with through hole (9).

4, according to the described a kind of structure improved sand valve of claim 3, it is characterized in that: the rear end of described adjusting screw rod (8) connects a rotating disk (10).

5, according to the described a kind of structure improved sand valve of claim 4, it is characterized in that: described backing plate (5) is a ring.