Multi-way valve with replaceable spring

Abstract

The utility model discloses a multi-way valve with a replaceable spring, which comprises a shell, a plurality of valve bodies are arranged in the shell, each valve body is communicated with the adjacent valve body, a plurality of oil inlets are arranged at the top end of the shell, some extending parts of the valve bodies are provided with pull rods, and the pull rods control valve cores arranged in inner cavities of the valve bodies to move. A through hole is formed in the position, located on the back side of the pull rod, of the valve body, a valve port is fixedly connected to the position, located at the through hole, of the side wall of the valve body, the valve port is cylindrical, a threaded groove is formed in the cylindrical wall of the valve port, the valve port is in threaded connection with a blanking cap, a spring is installed in the valve port, and the spring abuts against the blanking cap. When the performance of the spring is reduced due to the fact that the spring is damaged after being compressed by the valve element for a long time, the spring can be taken out of the valve port to be replaced and maintained by rotating and detaching the plug in a threaded mode, and large-scale adjustment and repair do not need to be conducted on the whole device.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of multiway valve, more specifically, it relates to a replaceable spring multiway valve. BACKGROUND

[0002] Multiway valve is an important element for controlling the flow direction, pressure and flow of liquid in hydraulic system, which is composed of valve body, valve core, valve sleeve, spring and other components, and the precise control of hydraulic system is realized by controlling the movement of valve core, and the multiway valve is widely used in the action of variable amplitude oil cylinder.

[0003] The spring in the multiway valve plays an important pressure balance role, if the spring is damaged or aged, the position control of the valve core will be inaccurate, when the position of the valve core is changed in high strength, the valve core impacts the spring for a long time, and the failure of the spring after high strength work will affect the reset and positioning of the valve core, thereby affecting the flow speed and direction of oil, causing efficiency problems in work, and the replacement of the failed spring needs to disassemble the whole device to replace, resulting in high maintenance cost.

[0004] Therefore, a new technical scheme is needed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies in the prior art, the utility model aims at providing a replaceable spring multiway valve.

[0006] The above technical purpose of the utility model is realized by the following technical scheme: a plurality of valve bodies are installed in the shell, the adjacent two valve bodies are connected, a plurality of oil inlet ports are formed at the top end of the valve body, a pull rod is installed at the right side position of the valve body top end away from the oil inlet port, the pull rod controls the movement of the valve core installed in the valve body inner cavity, a through hole is formed at the left side of the valve body away from the pull rod, a valve port is fixedly connected to the through hole of the valve body side wall, the valve port is cylindrical, a thread is formed on the outer cylinder wall of the valve port, a plug cover is connected to the valve port through the thread, a spring is installed in the valve port, and the spring is in contact with the plug cover.

[0007] By adopting the technical scheme, the multi-way valve is provided with a plurality of valve bodies installed in the shell, the valve bodies are communicated at the lower end, are communicated with cavities formed in the valve bodies, the cavities are provided with valve spools capable of moving horizontally, the valve spools change the passages in the cavities during movement, the valve spools move forward and backward through the pull rods installed on the surfaces of the valve bodies and control the change of the passages in the valve spools, the valve ports are fixedly connected with the plugs through screw threads at the other ends of the pull rods installed on the valve bodies, the plugs are provided with springs, the valve spools abut against the springs, one end of the valve spool is embedded in the spring, the spring buffers the movement of the valve spool in the plug, when the spring is compressed for a long time, the spring is inevitably damaged to cause the performance of the spring to be reduced or damaged, at this time, the plug is rotated and disassembled through screw threads, the spring can be taken out from the valve port to be replaced and maintained, and the whole device does not need to be overhauled.

[0008] The utility model discloses further set up: the annular recess no. 1 is set up in the inner wall of the plug and is located at the top angle.

[0009] By adopting the technical scheme, the annular recess no. 1 is set up at the angle position of the inner top wall of the plug, and the annular recess no. 1 can be used for embedding the blocking ring to strengthen the sealing effect.

[0010] The utility model discloses further set up: the recess is set up at the bottom of the valve port outer barrel surface, and the plug is provided with the recess of same size at the recess at the bottom of the valve port outer barrel surface, and the two recesses form annular recess no. 2, and the annular recess no. 2 is circular.

[0011] By adopting the technical scheme, the annular recess no. 2 is combined as a circular ring at the bottom of the valve port outer barrel surface and the plug, and the annular recess no. 2 can embed the blocking ring to strengthen the sealing effect.

[0012] The utility model discloses further set up: the cross section area of the valve spool is slightly smaller than the cross section area of the cavity formed in the valve body, and the valve spool is provided with a cylindrical protrusion greater than the cross section of the valve port at the valve port.

[0013] By adopting the technical scheme, the cross section area of the part of the valve spool abutting against the spring is greater than the cross section area of the inner cavity of the valve port, so that when the plug is opened, the valve spool will not move out of the valve port and will be clamped with the valve port.

[0014] The utility model discloses further set up: the plug is provided with a disc at the contact position with the valve body.

[0015] By adopting the technical scheme, the disc of the plug abuts against the surface of the valve body when the plug rotates downward, and the sealing effect is enhanced.

[0016] The annular groove one and the annular groove two are embedded with a rubber ring.

[0017] Through the above technical scheme, the material of the rubber ring is stable, and the cost is not high, and the rubber ring is a good material for plugging the connection between the cover and the valve port.

[0018] In conclusion, the utility model has the advantages that the spring is removed from the valve port for replacement and maintenance by changing the spring position in the valve body cavity and the valve core, and the whole device does not need to be repaired. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the utility model;

[0020] Figure 2 It is a sectional view of the utility model;

[0021] Figure 3 It is an explosion view of the cover, the valve port and the spring in the utility model;

[0022] Figure 4 It is a structure schematic view of the cover in the utility model;

[0023] Figure 5 It is Figure 4 A structure schematic view of the position A.

[0024] In the drawing: 1, shell; 2, valve body; 21, pull rod; 22, oil inlet; 23, cover; 231, annular groove one; 232, annular groove two; 24, valve core; 25, valve port; 26, spring. DETAILED DESCRIPTION

[0025] The utility model will be described in detail in combination with the drawings and examples. EXAMPLE

[0026] A replaceable spring multi-way valve as shown in Figure 1 The utility model discloses a replaceable spring multi-way valve, which comprises a shell 1, a plurality of valve bodies 2 are installed in the shell 1, two adjacent valve bodies 2 are communicated, a plurality of oil inlets 22 are formed at the top of the valve body 2, a pull rod 21 is installed at the right side position of the top of the valve body 2 away from the oil inlet 22, the pull rod 21 controls the movement of the valve core 24 installed in the cavity of the valve body 2, a through hole is formed at the left side of the valve body 2 away from the pull rod 21, a valve port 25 is fixedly connected to the side wall of the valve body 2 at the through hole, the valve port 25 is in a cylindrical shape, a thread is formed on the outer cylinder wall of the valve port 25, a cover 23 is connected to the valve port 25 in a threaded mode, and a spring 26 is installed in the valve port 25 and abuts against the cover 23.

[0027] As Figure 2 shown, the valve core 24 cross section area is slightly smaller than the cavity cross section area in the valve body 2, the valve core 24 is located at the valve port 25 and is provided with a cylindrical protrusion larger than the valve port 25 cross section.

[0028] As Figure 3 shown, the plug cover 23 is provided with a ring-shaped flat disc at the contact position with the valve body 2, and the annular groove one and the annular groove two are embedded with rubber rings.

[0029] As Figure 4 shown, the outer cylinder surface of the valve port 25 is provided with an annular groove one 231 at the bottom end, and the plug cover 23 is provided with an annular groove one 231 of the same size at the annular groove one 231 of the outer cylinder surface of the valve port 25 at the bottom end, and the two annular grooves one 231 form a circular ring.

[0030] As Figure 5 shown, the inner wall of the plug cover 23 and at the top end is provided with an annular groove two 232.

[0031] The multi-way valve is provided with a plurality of valve bodies 2 installed in the shell 1, the lower end of the valve body 2 is communicated with the valve body 2, and the cavity in each valve body 2 is communicated, a plurality of oil inlet ports 22 are provided at the top end of the valve body 2 for oil filling, a valve core 24 capable of moving horizontally is installed in the cavity, the valve core 24 changes the passage in the cavity during movement, the valve core 24 moves forward and backward through the pull rod 21 installed on the surface of the valve body 2 and controls the change of the passage in the valve core 24, the cross section area of the part of the valve core 24 abutting against the spring 26 is larger than the cross section area of the inner cavity of the valve port 25, so that when the plug cover 23 is opened, the valve core 24 will not move out of the valve port 25 and will be clamped with the valve port 25, the valve port 25 at the other end of the valve body 2 is fixedly connected with the plug cover 23 through screw connection, the spring 26 is installed in the plug cover 23, the valve core 24 abuts against the spring 26, one end of the valve core 24 is embedded in the spring 26, and the spring 26 buffers the movement of the valve core 24 in the plug cover 23, when the spring 26 is compressed for a long time, it will inevitably be damaged, resulting in performance degradation or damage of the spring 26, at this time, the spring 26 can be removed and replaced by rotating and disassembling the plug cover 23 through screw connection, so that large-scale repair of the entire device is not required.

[0032] A ring-shaped groove one 231 is arranged at the position of the included angle of the inner top wall of the plug 23, and a ring-shaped groove two 232 is arranged at the position of the outer cylinder surface of the valve port 25 at the bottom end and the plug 23 at the position of the outer cylinder surface of the valve port 25 at the bottom end, which are combined into a circular ring shape. The rubber ring is embedded in the ring-shaped groove one 231 and the ring-shaped groove two 232, which can be used to strengthen the sealing effect of the nested blocking ring. The material of the rubber ring is stable, and the cost is not high. The rubber ring is a good material for blocking. The rubber ring blocks the connection between the plug 23 and the valve port 25. The circular disc provided on the plug 23 abuts against the surface of the valve body 2 when the plug 23 is rotated downward, which can also enhance the sealing effect.

[0033] The preferred embodiments of the present application are described above, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that, for ordinary skilled persons in the technical field, some improvements and decorations without departing from the principles of the present application shall also be considered as falling within the protection scope of the present application.

Claims

1. A replaceable spring multi-way valve, comprising a housing (1), wherein a plurality of valve bodies (2) are installed inside the housing (1), adjacent valve bodies (2) are connected, a plurality of oil inlets (22) are provided at the top of the valve body (2), and a pull rod (21) is installed at the right side of the top of the valve body (2) away from the oil inlets (22), the pull rod (21) controlling the movement of a valve core (24) installed in the inner cavity of the valve body (2), characterized in that: The valve body (2) is provided with a through hole away from the left side of the pull rod (21), the side wall of the valve body (2) is fixedly connected with a valve port (25) at the through hole, the valve port (25) is cylindrical, the outer cylinder wall of the valve port (25) is provided with a thread, the valve port (25) is threadedly connected with a plug cover (23), and the valve port (25) is provided with a spring (26).

2. A replaceable spring multiple valve according to claim 1, characterized in that: The outer cylinder surface of the valve port (25) is provided with an annular groove one (231) at the bottom end, and the plug cover (23) is provided with an annular groove one (231) of the same size at the annular groove one (231) of the outer cylinder surface of the valve port (25) at the bottom end, and the two annular grooves one (231) form a circular ring.

3. A replaceable spring multiple valve according to claim 2, characterized in that: The inner wall of the plug cover (23) and the top corner are provided with an annular groove two (232).

4. The replaceable spring multiple valve of claim 1, wherein: The cross-sectional area of the valve core (24) is slightly smaller than the cross-sectional area of the cavity provided in the valve body (2), and the valve core (24) is provided with a cylindrical protrusion larger than the cross section of the valve port (25) at the valve port (25).

5. The replaceable spring multiple valve of claim 1, wherein: The plug cover (23) is provided with a ring-shaped flat disc at the contact position with the valve body (2).

6. A replaceable spring multiple valve according to claim 3, wherein: The annular groove one and the annular groove two are embedded with rubber rings.

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