CN217539746U

CN217539746U - Concrete pump truck delivery pipe control valve

Info

Publication number: CN217539746U
Application number: CN202220695122.7U
Authority: CN
Inventors: 迟恩涛; 高凡; 吴祥亮; 田雨; 张鑫; 郭兵; 徐康宁; 李勇; 李明博; 王国栋
Original assignee: China State Construction Port Engineering Group Co Ltd
Current assignee: China State Construction Port Engineering Group Co Ltd
Priority date: 2022-03-28
Filing date: 2022-03-28
Publication date: 2022-10-04
Anticipated expiration: 2032-03-28

Abstract

The utility model relates to a concrete pump truck conveying pipe control valve, which belongs to the technical field of valve devices, and the key point of the technical scheme is that the concrete pump truck conveying pipe control valve comprises a shell and a sealing assembly arranged inside the shell, wherein the upper end of the shell is provided with a feeding hole, the lower end of the shell is provided with a discharging hole, a sealing cavity and a containing cavity are arranged inside the shell, and the sealing cavity is positioned at the upper part of the containing cavity and is communicated with the containing cavity; the accommodating chamber is communicated with a flushing connector, and a switch valve is arranged between the flushing connector and the shell; the utility model discloses the convenience is washed control valve inside, is difficult for causing the jam to the valve body.

Description

Concrete pump truck delivery pipe control valve

Technical Field

The utility model relates to the technical field of valving, especially, relate to a concrete pump truck conveyer pipe control valve.

Background

The concrete pouring mainly adopts two modes of self-discharging and pumping, wherein the pumping construction is widely applied, the construction mode is mainly realized by a concrete pump truck, and the concrete pump truck is a machine for continuously conveying concrete along a pipeline by utilizing pressure and consists of a pump body and a conveying pipe. In the pouring process, after pouring at one part is finished, the pumping device needs to be temporarily closed, and the conveying pipe is moved to carry out pouring at other parts.

In order to control concrete pouring more accurately, a control valve is usually arranged at the tail end of the conveying pipe, and after the slurry pump stops working, the control valve is closed, so that concrete slurry in the conveying pipe cannot be discharged continuously. Because the concrete mud has certain adhesive force to can adhere to the object surface after the drying, the control valve inner space is compact, and inside sets up control element, causes a small amount of concrete mud granule to remain easily, uses for a long time like this and can influence the normal use of control valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a concrete pump truck conveyer pipe control valve, the convenience is washed the control valve is inside, is difficult for causing the jam to the valve body.

The above technical object of the present invention can be achieved by the following technical solutions: a concrete pump truck conveying pipe control valve comprises a shell and a sealing assembly arranged in the shell, wherein a feeding hole is formed in the upper end of the shell, a discharging hole is formed in the lower end of the shell, a sealing cavity and an accommodating cavity are formed in the shell, and the sealing cavity is located on the upper portion of the accommodating cavity and communicated with the accommodating cavity; the containing chamber is communicated with a flushing connector, and a switch valve is arranged between the flushing connector and the shell.

According to the technical scheme, the sealing chamber and the containing chamber are arranged in the shell, the on-off of the control valve is controlled at the position of the sealing chamber, the capacity of the interior of the control valve is expanded through the containing chamber, the flushing connector is communicated with the containing chamber, and the switch valve is closed when the control valve is used for discharging and pouring; when needs are washed the valve body is inside, open the ooff valve, with the washing connection water pipe, let in washing rivers in holding the chamber through the washing connection to erode holding the interior adnexed concrete granule of chamber, make the difficult emergence of control valve blockking up when using.

Preferably, the sealing assembly comprises a sealing plug and a sealing elastic piece; a positioning rod is fixed at the lower end of the sealing elastic piece, the positioning rod is fixedly connected with the wall of the containing chamber, and the upper end of the sealing elastic piece is fixedly connected with the sealing plug; the sealing plug is used for sealing the sealing chamber, and when the discharge pressure is greater than the set pressure, the sealing plug is separated from the sealing chamber.

Through the technical scheme, the sealing assembly comprises a sealing plug and a sealing elastic piece; when the slurry pump works, under the pressure of concrete slurry, the sealing elastic piece is compressed, the sealing plug is separated from the position of the sealing cavity, and then the concrete slurry flows out through the control valve; when the slurry pump stops pumping, the pressure in the conveying pipe cannot reach the threshold value of the opening of the sealing plug, and then the sealing plug seals the sealing cavity under the action of the sealing elastic piece, so that concrete slurry in the conveying pipe cannot be discharged continuously, and the operation is convenient.

Preferably, the inner wall of the flushing joint is provided with a connecting internal thread.

Through above-mentioned technical scheme, be provided with the connection internal thread through the inner wall at the flushing nipple, and then through using the screwed joint that corresponds the specification, and then will wash water piping connection on the flushing nipple, convenient operation is swift.

Preferably, the sealing elastic member comprises a lower sleeve, an upper sleeve and a sealing spring positioned between the upper sleeve and the inner part of the lower sleeve; the upper sleeve is inserted into the lower sleeve and is in sliding contact with the lower sleeve along the axial direction of the lower sleeve; the upper end of the upper sleeve is fixedly connected with the sealing plug, and the lower sleeve is fixedly connected with the positioning rod.

Through above-mentioned technical scheme, keep apart sealing spring through setting up upper portion sleeve, lower part sleeve to reduce the concrete mud that passes through in the casing to sealing spring's influence, and then make the elasticity that keeps that sealed elastic component can be good reset ability, durable.

Preferably, the sealing plug is of a frustum shape with a cross section gradually increasing from top to bottom.

Through the technical scheme, the sealing plug is of the frustum shape with the cross section gradually increasing from top to bottom, so that the sealing plug is easy to match with the sealing cavity, and the sealing cavity can be better sealed.

Preferably, a connecting flange is arranged at the upper end of the shell.

Through above-mentioned technical scheme, through set up flange on the casing, and then utilize flange to install the control valve on the conveyer pipe, convenient operation is swift.

Preferably, the outer peripheral wall of the discharge port is provided with a connecting external thread.

Through above-mentioned technical scheme, set up the connection external screw thread through the periphery wall at the discharge gate, and then through connecting the external screw thread, the convenience is further to the external other valve body or pipeline of control valve.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram showing a concrete pump truck delivery pipe control valve.

Fig. 2 is a sectional view of a concrete pump truck delivery pipe control valve.

Wherein, 1, a shell; 11. a connecting flange; 12. sealing the chamber; 13. a housing chamber; 14. connecting external threads; 2. flushing the joint; 21. connecting the internal threads; 3. an on-off valve; 4. a sealing plug; 5. a sealing elastic member; 51. a lower sleeve; 52. an upper sleeve; 53. and sealing the spring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that, as used herein or in the following description, the terms "front," "rear," "left," "right," "upper" and "lower" refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions that face away from the geometric center of a particular component, respectively.

Example (b):

a concrete pump truck conveying pipe control valve is hereinafter referred to as a control valve, and referring to fig. 1 and 2, the control valve comprises a shell 1 and a sealing assembly arranged inside the shell 1, a feeding hole is formed in the upper end of the shell 1, a discharging hole is formed in the lower end of the shell 1, and connecting external threads 14 are formed in the outer peripheral wall of the discharging hole. The upper end of the shell 1 is provided with a connecting flange 11, and the connecting flange 11 is fixedly installed at the end part of a conveying pipe of the concrete pump truck through bolt connection. The upper part of the figure shows the delivery pipe of the concrete pump truck.

Referring to fig. 1 and 2, a sealed chamber 12 and an accommodating chamber 13 are provided inside the housing 1, the sealed chamber 12 being located at an upper portion of the accommodating chamber 13 and communicating with the accommodating chamber 13; the accommodating chamber 13 is communicated with a flushing connector 2, and a switch valve 3 is arranged between the flushing connector 2 and the shell 1. The inner wall of the flushometer fitting 2 is provided with an internal connecting thread 21. The sealing assembly comprises a sealing plug 4 and a sealing elastic member 5. The sealing plug 4 is of a frustum shape with the cross section gradually increasing from top to bottom. A positioning rod is fixed at the lower end of the sealing elastic piece 5, the positioning rod is fixedly connected with the wall of the accommodating chamber 13, and the upper end of the sealing elastic piece 5 is fixedly connected with the sealing plug 4; the sealing plug 4 is used for sealing the sealing chamber 12, and when the discharging pressure is higher than the setting pressure, the sealing plug 4 is separated from the sealing chamber 12.

Referring to fig. 1 and 2, the sealing elastic member 5 includes a lower sleeve 51, an upper sleeve 52, and a sealing spring 53 between the upper sleeve 52 and the inside of the lower sleeve 51; the upper sleeve 52 is inserted into the lower sleeve 51 and is in sliding contact with the lower sleeve 51 in the axial direction of the lower sleeve 51; the upper end of the upper sleeve 52 is fixedly connected with the sealing plug 4, and the lower sleeve 51 is fixedly connected with the positioning rod.

Referring to fig. 1 and 2, when the mud pump is operated, the on-off valve 3 is closed. Under the pressure of the concrete slurry, the sealing elastic piece 5 is compressed, the sealing plug 4 is separated from the position of the sealing chamber 12, and the concrete slurry flows out through the control valve; when the slurry pump stops pumping, the pressure in the conveying pipe cannot reach the threshold value of opening the sealing plug 4, and then under the action of the sealing elastic piece, the sealing plug 4 seals the sealing cavity 12, so that concrete slurry in the conveying pipe cannot be discharged continuously. When needs are to the inside washing of valve body, open ooff valve 3, connect the water pipe with flush joint 2, let in through flush joint 2 in to holding cavity 13 and wash rivers to erodeing holding cavity 13 interior adnexed concrete granule, making the difficult emergence of control valve when using and blockking up.

Although some specific embodiments of the present invention have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims

1. The utility model provides a concrete pump truck conveyer pipe control valve, includes casing (1) and sets up in the inside seal assembly of casing (1), the upper end of casing (1) is provided with the feed inlet, the lower extreme of casing (1) is provided with discharge gate, its characterized in that: a sealing chamber (12) and an accommodating chamber (13) are arranged in the shell (1), and the sealing chamber (12) is positioned at the upper part of the accommodating chamber (13) and communicated with the accommodating chamber (13); the accommodating chamber (13) is communicated with a flushing joint (2), and a switch valve (3) is arranged between the flushing joint (2) and the shell (1).

2. The concrete pump truck delivery pipe control valve of claim 1, wherein: the sealing assembly comprises a sealing plug (4) and a sealing elastic piece (5); a positioning rod is fixed at the lower end of the sealing elastic piece (5), the positioning rod is fixedly connected with the wall of the containing chamber (13), and the upper end of the sealing elastic piece (5) is fixedly connected with the sealing plug (4); the sealing plug (4) is used for sealing the sealing chamber (12), and when the discharge pressure is higher than the set pressure, the sealing plug (4) is separated from the sealing chamber (12).

3. The concrete pump truck delivery pipe control valve of claim 1, wherein: the inner wall of the flushing joint (2) is provided with a connecting internal thread (21).

4. The concrete pump truck delivery pipe control valve of claim 2, wherein: the sealing elastic piece (5) comprises a lower sleeve (51), an upper sleeve (52) and a sealing spring (53) positioned between the upper sleeve (52) and the interior of the lower sleeve (51); the upper sleeve (52) is inserted into the lower sleeve (51) and is in sliding contact with the lower sleeve (51) along the axial direction of the lower sleeve (51); the upper end of the upper sleeve (52) is fixedly connected with the sealing plug (4), and the lower sleeve (51) is fixedly connected with the positioning rod.

5. The concrete pump truck delivery pipe control valve of claim 2, wherein: the sealing plug (4) is of a frustum shape with the cross section gradually increasing from top to bottom.

6. The concrete pump truck delivery pipe control valve of claim 1, wherein: and the upper end of the shell (1) is provided with a connecting flange (11).

7. The concrete pump truck delivery pipe control valve of claim 1, wherein: the periphery wall of discharge gate is provided with and connects external screw thread (14).