Two-linkage main reversing valve block of filling industrial pump

Abstract

The utility model relates to the technical field of main reversing valve blocks, in particular to a two-link main reversing valve block of a filling industrial pump. Comprising a main reversing valve body, and an overflow valve and a hydraulic three-position four-way reversing valve are arranged on the main reversing valve body. The hydraulic three-position four-way reversing valve is adopted, the service life of the two-linkage main reversing valve block is prolonged, the stability of the two-linkage main reversing valve block is improved, the reliability and the stability of a hydraulic system of the filling industrial pump are improved, in addition, high integration is achieved, the two-linkage main reversing valve block meets the requirement for reversing of the hydraulic oil circulation direction, and meanwhile the reliability and the stability of the hydraulic system are improved. The maximum pressure of the hydraulic system may also be defined.

Description

Technical Field

[0001] The utility model relates to the technical field of a main reversing valve block, in particular to a main reversing valve block for a filling industrial pump. Background Art

[0002] The main conveying equipment in the tailings filling industry is the filling industrial pump. There are currently two types of filling industrial pumps on the market, one is the S swing valve filling industrial pump, and the other is the lifting cone valve filling industrial pump. Regardless of the filling industrial pump structure, there is a switching action of the left and right concrete pistons moving back and forth (which can be understood as a switching valve). At present, this switching action is completed by the action of a double-acting cylinder. The cylinder is driven by hydraulic oil. When the rod chamber is filled with oil, the cylinder retracts, and when the rodless chamber is filled with oil, the cylinder extends. During the entire working process of the filling industrial pump, the rod chamber and the rodless chamber alternately fill and return oil, over and over again.

[0003] In order to make the switching valve of the filling industrial pump switch accurately and automatically, there must be a valve block in the hydraulic system of the filling industrial pump to achieve this action, which is called the main reversing valve block in the industry. At present, the main reversing valve block is mainly made of 45# forged steel, on which the electromagnetic reversing valve and overflow valve are installed, and the oil inlet, oil return port, working oil port, etc. are set.

[0004] The switching valve that fills the industrial pump changes direction 14-20 times per minute, so the electromagnet of the electromagnetic reversing valve needs to be energized / de-energized 14-20 times per minute. Even if the life of the solenoid valve is 1 million times, based on 8 hours of work per day, the life cycle is only 100 days. The stability of the equipment is not high and cannot meet the use requirements. Summary of the invention

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a main reversing valve block for a filling industrial pump.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] The utility model provides a main reversing valve block for a filling industrial pump, comprising a main reversing valve body, on which a relief valve and a hydraulic three-position four-way reversing valve are arranged;

[0008] The front side of the main reversing valve body is provided with two main oil cylinder A connection ports and two main reversing valve block oil inlets;

[0009] The left side surface of the main reversing valve body is provided with a right position control oil port and a main reversing valve block oil discharge port;

[0010] A left position control oil port is arranged on the right side surface of the main reversing valve body;

[0011] The bottom of the main reversing valve body is provided with four threaded holes;

[0012] Two main reversing valve block oil return ports and two main oil cylinder B connection ports are arranged on the back of the main reversing valve body.

[0013] Preferably, the oil inlets of the two main reversing valve blocks, the P port of the relief valve and the P ports of the two hydraulic three-position four-way reversing valves are all connected.

[0014] Preferably, the oil return ports of the two main reversing valve blocks and the T ports of the two hydraulic three-position four-way reversing valves are all connected.

[0015] Preferably, the connecting port A of the master oil cylinder and the port A of the hydraulic three-position four-way reversing valve are connected.

[0016] Preferably, the connecting port of the master cylinder B is connected to the port B of the hydraulic three-position four-way reversing valve.

[0017] Preferably, the left-position control oil port and the X-ports of the two hydraulic three-position four-way reversing valves are connected.

[0018] Preferably, the right control oil port and the Y ports of the two hydraulic three-position four-way reversing valves are connected.

[0019] Compared with the known public technology, the technical solution provided by the utility model has the following beneficial effects:

[0020] (1) The utility model adopts a hydraulic three-position four-way reversing valve, which prolongs the service life of the reversing valve, improves the stability of the reversing valve, and improves the reliability and stability of the hydraulic system of the filling industrial pump.

[0021] (2) The utility model is highly integrated, and the main reversing valve block can not only satisfy the distribution of hydraulic oil flow direction, but also limit the maximum pressure of the hydraulic system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front view of a main reversing valve block for a filling industrial pump of the utility model;

[0023] Figure 2 This is a left view of a main reversing valve block for a filling industrial pump of the utility model;

[0024] Figure 3 This is a right side view of a main reversing valve block for a filling industrial pump according to the utility model;

[0025] Figure 4 This is a bottom view of a main reversing valve block for a filling industrial pump according to the utility model;

[0026] Figure 5 This is a top view of a main reversing valve block for a filling industrial pump of the utility model;

[0027] Figure 6 This is a back view of a main reversing valve block for a filling industrial pump according to the utility model;

[0028] Figure 7 The utility model is a schematic diagram of a main reversing valve block for a filling industrial pump.

[0029] Description of the numbers in the figure:

[0030] 1. Overflow valve; 2. Hydraulic three-position four-way reversing valve; 3. Hydraulic three-position four-way reversing valve; 5. Main reversing valve body; 5.1. Left position control oil port; 5.2. Main oil cylinder A connection port; 5.3. Main oil cylinder A connection port; 5.4. Main reversing valve block oil inlet; 5.5. Main reversing valve block oil inlet; 5.6. Main reversing valve block oil discharge port; 5.10. Right position control oil port; 5.8. Main reversing valve block oil return port; 5.9. Main reversing valve block oil return port; 5.10. Main oil cylinder B connection port; 5.14. Main oil cylinder B connection port; 5.12. Threaded hole; 5.13. Threaded hole; Implementation

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "sleeved / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two components; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0034] like Figure 1-Figure 7 As shown, the utility model provides a main reversing valve block for a filling industrial pump, including a main reversing valve body 5, on which a relief valve 1, a hydraulic three-position four-way reversing valve 2, and a hydraulic three-position four-way reversing valve 3 are arranged. The front of the main reversing valve body 5 is provided with a main oil cylinder A connection port 5.2, a main oil cylinder A connection port 5.3, a main reversing valve block oil inlet port 5.4, and a main reversing valve block oil inlet port 5.5; the left side of the main reversing valve body 5 is provided with a right position control oil port 5.7 and a main reversing valve block oil discharge port 5.6; the right side of the main reversing valve body 5 is provided with a left position control oil port 5.1; the bottom of the main reversing valve body 5 is provided with four threaded holes 5.13; the back of the main reversing valve body 5 is provided with a main reversing valve block oil return port 5.8, a main reversing valve block oil return port 5.9, a main oil cylinder B connection port 5.10, and a main oil cylinder B connection port 5.11.

[0035] Furthermore, the main reversing valve block oil inlet 5.4, the main reversing valve block oil inlet 5.5, the P port of the relief valve 1, and the P port of the hydraulic three-position four-way reversing valve 2 are all connected.

[0036] Furthermore, the main reversing valve block oil return port 5.10, the main reversing valve block oil return port 5.11 and the T port of the hydraulic three-position four-way reversing valve 2 and the T port of the hydraulic three-position four-way reversing valve 3 are all connected.

[0037] Furthermore, the connecting port 5.2 of the master cylinder A is connected to the port A of the hydraulic three-position four-way reversing valve 2.

[0038] Furthermore, the connecting port 5.3 of the master cylinder A is connected to the port A of the hydraulic three-position four-way reversing valve 3.

[0039] Furthermore, the connecting port 5.10 of the master cylinder B is connected to the port B of the hydraulic three-position four-way reversing valve 3.

[0040] Furthermore, the connecting port 5.11 of the master cylinder B is connected to the port B of the hydraulic three-position four-way reversing valve 2.

[0041] Furthermore, the left control oil port 5.1 and the X ports of the hydraulic three-position four-way reversing valve 2 and the hydraulic three-position four-way reversing valve 3 are connected.

[0042] Furthermore, the right control oil port 5.7 and the Y ports of the hydraulic three-position four-way reversing valve 2 and the hydraulic three-position four-way reversing valve 3 are connected.

[0043] Furthermore, the oil unloading port 5.6 of the main reversing valve block and the T port of the relief valve 1 are connected.

[0044] Working principle: The power oil enters the main reversing valve from the outside through the main reversing valve block oil inlet 5.4 and the main reversing valve block oil inlet 5.5. When the control oil enters the main reversing valve body 5 from the outside through the left control oil port 5.1, the hydraulic three-position four-way reversing valve 2 and the hydraulic three-position four-way reversing valve 3 are in the left position at the same time, and the main oil cylinder A enters the oil, which can push the external left concrete piston to move. When the control oil enters the main reversing valve body 5 from the outside through the right control oil port 5.7, the hydraulic three-position four-way reversing valve 2 and the hydraulic three-position four-way reversing valve 3 are in the right position at the same time, and the main oil cylinder B enters the oil, which can push the external right concrete piston to move. When no control oil enters the left control oil port 5.1 and the right control oil port 5.7, the hydraulic three-position four-way reversing valve 2 and the hydraulic three-position four-way reversing valve 3 are in the middle position at the same time, and the hydraulic oil entering the main reversing valve 5 from the main reversing valve oil inlet 5.5 and the main reversing valve oil inlet 5.6 flows back to the external hydraulic oil tank through the main valve block oil return port 5.8 and the main valve block oil return port 5.9. That is, the distribution and reversing action is realized after the power oil enters the main reversing valve block oil inlet and comes out from the main oil cylinder A connecting oil port or the main oil cylinder B connecting oil port. The overflow valve 1 exists to ensure that the maximum pressure of the hydraulic oil in the main reversing valve body 5 does not exceed a certain limit, and the hydraulic three-position four-way reversing valve 2 and the hydraulic three-position four-way reversing valve 3 exist to change the flow direction of the hydraulic oil.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A two-way main reversing valve block for a filling industrial pump, comprising a main reversing valve body (5), characterized in that: The main reversing valve body (5) is provided with a relief valve (1), a first hydraulically operated three-position four-way reversing valve (2), and a second hydraulically operated three-position four-way reversing valve (3); The front of the main reversing valve body (5) is provided with a first connection port (5.2) of the main oil cylinder A, a second connection port (5.3) of the main oil cylinder A, a first oil inlet (5.4) of the two-unit main reversing valve block, and a second oil inlet (5.5) of the two-unit main reversing valve block; The left side of the main reversing valve body (5) is provided with a right position control oil port (5.7) and a double main reversing valve block oil discharge port (5.6); The right side surface of the main reversing valve body (5) is provided with a left-position control oil port (5.1); The bottom of the main reversing valve body (5) is provided with four threaded holes 2 (5.13); The back of the main reversing valve body (5) is provided with a first oil return port (5.8) of the two-unit main reversing valve block, a second oil return port (5.9) of the two-unit main reversing valve block, a first connecting port (5.10) of the main oil cylinder B, and a second connecting port (5.11) of the main oil cylinder B.

2. A two-way main reversing valve block for a filling industrial pump according to claim 1, characterized in that: The first oil inlet (5.4) of the two-unit main reversing valve block, the second oil inlet (5.5) of the two-unit main reversing valve block, the P port of the overflow valve (1), the P port of the first hydraulic three-position four-way reversing valve (2), and the P port of the second hydraulic three-position four-way reversing valve (3) are all connected.

3. A two-way main reversing valve block for a filling industrial pump according to claim 1, characterized in that: The first oil return port (5.8) of the two-unit main reversing valve block, the second oil return port (5.9) of the two-unit main reversing valve block, the T port of the first hydraulic three-position four-way reversing valve (2), and the T port of the second hydraulic three-position four-way reversing valve (3) are all connected.

4. A two-way main reversing valve block for a filling industrial pump according to claim 1, characterized in that: The first connecting port (5.2) of the master oil cylinder A is in communication with the port A of the first hydraulic three-position four-way reversing valve (2).

5. The two-way main reversing valve block for a filling industrial pump according to claim 1 is characterized in that: The second connecting port (5.3) of the master oil cylinder A is in communication with the port A of the second hydraulic three-position four-way reversing valve (3).

6. A two-way main reversing valve block for a filling industrial pump according to claim 1, characterized in that: The first connecting port (5.10) of the master oil cylinder B is connected to the port B of the second hydraulic three-position four-way reversing valve (3).

7. A two-way main reversing valve block for a filling industrial pump according to claim 1, characterized in that: The second connecting port (5.11) of the master oil cylinder B is in communication with the port B of the first hydraulic three-position four-way reversing valve (2).

8. The two-way main reversing valve block for a filling industrial pump according to claim 1 is characterized in that: The left position control oil port (5.1) is in communication with the X ports of the first hydraulic three-position four-way reversing valve (2) and the second hydraulic three-position four-way reversing valve (3).

9. A two-way main reversing valve block for a filling industrial pump according to claim 1, characterized in that: The right control oil port (5.7) is in communication with the Y ports of the first hydraulic three-position four-way reversing valve (2) and the second hydraulic three-position four-way reversing valve (3).

10. A two-way main reversing valve block for a filling industrial pump according to claim 1, characterized in that: The oil unloading port (5.6) of the two-unit main reversing valve block and the T port of the overflow valve (1) are connected.

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